ResourceTypes.cpp revision 668f0a356cba44c22d8ca0c9f4711613885d46a9 
1/*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "ResourceType"
18//#define LOG_NDEBUG 0
19
20#include <androidfw/ByteBucketArray.h>
21#include <androidfw/ResourceTypes.h>
22#include <androidfw/TypeWrappers.h>
23#include <utils/Atomic.h>
24#include <utils/ByteOrder.h>
25#include <utils/Debug.h>
26#include <utils/Log.h>
27#include <utils/String16.h>
28#include <utils/String8.h>
29
30#include <stdlib.h>
31#include <string.h>
32#include <memory.h>
33#include <ctype.h>
34#include <stdint.h>
35#include <stddef.h>
36
37#ifndef INT32_MAX
38#define INT32_MAX ((int32_t)(2147483647))
39#endif
40
41#define STRING_POOL_NOISY(x) //x
42#define XML_NOISY(x) //x
43#define TABLE_NOISY(x) //x
44#define TABLE_GETENTRY(x) //x
45#define TABLE_SUPER_NOISY(x) //x
46#define LOAD_TABLE_NOISY(x) //x
47#define TABLE_THEME(x) //x
48#define LIB_NOISY(x) //x
49
50namespace android {
51
52#ifdef HAVE_WINSOCK
53#undef  nhtol
54#undef  htonl
55
56#ifdef HAVE_LITTLE_ENDIAN
57#define ntohl(x)    ( ((x) << 24) | (((x) >> 24) & 255) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) )
58#define htonl(x)    ntohl(x)
59#define ntohs(x)    ( (((x) << 8) & 0xff00) | (((x) >> 8) & 255) )
60#define htons(x)    ntohs(x)
61#else
62#define ntohl(x)    (x)
63#define htonl(x)    (x)
64#define ntohs(x)    (x)
65#define htons(x)    (x)
66#endif
67#endif
68
69#define IDMAP_MAGIC             0x504D4449
70#define IDMAP_CURRENT_VERSION   0x00000001
71
72#define APP_PACKAGE_ID      0x7f
73#define SYS_PACKAGE_ID      0x01
74
75// Standard C isspace() is only required to look at the low byte of its input, so
76// produces incorrect results for UTF-16 characters.  For safety's sake, assume that
77// any high-byte UTF-16 code point is not whitespace.
78inline int isspace16(char16_t c) {
79    return (c < 0x0080 && isspace(c));
80}
81
82template<typename T>
83inline static T max(T a, T b) {
84    return a > b ? a : b;
85}
86
87// range checked; guaranteed to NUL-terminate within the stated number of available slots
88// NOTE: if this truncates the dst string due to running out of space, no attempt is
89// made to avoid splitting surrogate pairs.
90static void strcpy16_dtoh(char16_t* dst, const uint16_t* src, size_t avail)
91{
92    char16_t* last = dst + avail - 1;
93    while (*src && (dst < last)) {
94        char16_t s = dtohs(static_cast<char16_t>(*src));
95        *dst++ = s;
96        src++;
97    }
98    *dst = 0;
99}
100
101static status_t validate_chunk(const ResChunk_header* chunk,
102                               size_t minSize,
103                               const uint8_t* dataEnd,
104                               const char* name)
105{
106    const uint16_t headerSize = dtohs(chunk->headerSize);
107    const uint32_t size = dtohl(chunk->size);
108
109    if (headerSize >= minSize) {
110        if (headerSize <= size) {
111            if (((headerSize|size)&0x3) == 0) {
112                if ((size_t)size <= (size_t)(dataEnd-((const uint8_t*)chunk))) {
113                    return NO_ERROR;
114                }
115                ALOGW("%s data size 0x%x extends beyond resource end %p.",
116                     name, size, (void*)(dataEnd-((const uint8_t*)chunk)));
117                return BAD_TYPE;
118            }
119            ALOGW("%s size 0x%x or headerSize 0x%x is not on an integer boundary.",
120                 name, (int)size, (int)headerSize);
121            return BAD_TYPE;
122        }
123        ALOGW("%s size 0x%x is smaller than header size 0x%x.",
124             name, size, headerSize);
125        return BAD_TYPE;
126    }
127    ALOGW("%s header size 0x%04x is too small.",
128         name, headerSize);
129    return BAD_TYPE;
130}
131
132static void fill9patchOffsets(Res_png_9patch* patch) {
133    patch->xDivsOffset = sizeof(Res_png_9patch);
134    patch->yDivsOffset = patch->xDivsOffset + (patch->numXDivs * sizeof(int32_t));
135    patch->colorsOffset = patch->yDivsOffset + (patch->numYDivs * sizeof(int32_t));
136}
137
138inline void Res_value::copyFrom_dtoh(const Res_value& src)
139{
140    size = dtohs(src.size);
141    res0 = src.res0;
142    dataType = src.dataType;
143    data = dtohl(src.data);
144}
145
146void Res_png_9patch::deviceToFile()
147{
148    int32_t* xDivs = getXDivs();
149    for (int i = 0; i < numXDivs; i++) {
150        xDivs[i] = htonl(xDivs[i]);
151    }
152    int32_t* yDivs = getYDivs();
153    for (int i = 0; i < numYDivs; i++) {
154        yDivs[i] = htonl(yDivs[i]);
155    }
156    paddingLeft = htonl(paddingLeft);
157    paddingRight = htonl(paddingRight);
158    paddingTop = htonl(paddingTop);
159    paddingBottom = htonl(paddingBottom);
160    uint32_t* colors = getColors();
161    for (int i=0; i<numColors; i++) {
162        colors[i] = htonl(colors[i]);
163    }
164}
165
166void Res_png_9patch::fileToDevice()
167{
168    int32_t* xDivs = getXDivs();
169    for (int i = 0; i < numXDivs; i++) {
170        xDivs[i] = ntohl(xDivs[i]);
171    }
172    int32_t* yDivs = getYDivs();
173    for (int i = 0; i < numYDivs; i++) {
174        yDivs[i] = ntohl(yDivs[i]);
175    }
176    paddingLeft = ntohl(paddingLeft);
177    paddingRight = ntohl(paddingRight);
178    paddingTop = ntohl(paddingTop);
179    paddingBottom = ntohl(paddingBottom);
180    uint32_t* colors = getColors();
181    for (int i=0; i<numColors; i++) {
182        colors[i] = ntohl(colors[i]);
183    }
184}
185
186size_t Res_png_9patch::serializedSize() const
187{
188    // The size of this struct is 32 bytes on the 32-bit target system
189    // 4 * int8_t
190    // 4 * int32_t
191    // 3 * uint32_t
192    return 32
193            + numXDivs * sizeof(int32_t)
194            + numYDivs * sizeof(int32_t)
195            + numColors * sizeof(uint32_t);
196}
197
198void* Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
199                                const int32_t* yDivs, const uint32_t* colors)
200{
201    // Use calloc since we're going to leave a few holes in the data
202    // and want this to run cleanly under valgrind
203    void* newData = calloc(1, patch.serializedSize());
204    serialize(patch, xDivs, yDivs, colors, newData);
205    return newData;
206}
207
208void Res_png_9patch::serialize(const Res_png_9patch& patch, const int32_t* xDivs,
209                               const int32_t* yDivs, const uint32_t* colors, void* outData)
210{
211    uint8_t* data = (uint8_t*) outData;
212    memcpy(data, &patch.wasDeserialized, 4);     // copy  wasDeserialized, numXDivs, numYDivs, numColors
213    memcpy(data + 12, &patch.paddingLeft, 16);   // copy paddingXXXX
214    data += 32;
215
216    memcpy(data, xDivs, patch.numXDivs * sizeof(int32_t));
217    data +=  patch.numXDivs * sizeof(int32_t);
218    memcpy(data, yDivs, patch.numYDivs * sizeof(int32_t));
219    data +=  patch.numYDivs * sizeof(int32_t);
220    memcpy(data, colors, patch.numColors * sizeof(uint32_t));
221
222    fill9patchOffsets(reinterpret_cast<Res_png_9patch*>(outData));
223}
224
225static bool assertIdmapHeader(const void* idmap, size_t size) {
226    if (reinterpret_cast<uintptr_t>(idmap) & 0x03) {
227        ALOGE("idmap: header is not word aligned");
228        return false;
229    }
230
231    if (size < ResTable::IDMAP_HEADER_SIZE_BYTES) {
232        ALOGW("idmap: header too small (%d bytes)", (uint32_t) size);
233        return false;
234    }
235
236    const uint32_t magic = htodl(*reinterpret_cast<const uint32_t*>(idmap));
237    if (magic != IDMAP_MAGIC) {
238        ALOGW("idmap: no magic found in header (is 0x%08x, expected 0x%08x)",
239             magic, IDMAP_MAGIC);
240        return false;
241    }
242
243    const uint32_t version = htodl(*(reinterpret_cast<const uint32_t*>(idmap) + 1));
244    if (version != IDMAP_CURRENT_VERSION) {
245        // We are strict about versions because files with this format are
246        // auto-generated and don't need backwards compatibility.
247        ALOGW("idmap: version mismatch in header (is 0x%08x, expected 0x%08x)",
248                version, IDMAP_CURRENT_VERSION);
249        return false;
250    }
251    return true;
252}
253
254class IdmapEntries {
255public:
256    IdmapEntries() : mData(NULL) {}
257
258    bool hasEntries() const {
259        if (mData == NULL) {
260            return false;
261        }
262
263        return (dtohs(*mData) > 0);
264    }
265
266    size_t byteSize() const {
267        if (mData == NULL) {
268            return 0;
269        }
270        uint16_t entryCount = dtohs(mData[2]);
271        return (sizeof(uint16_t) * 4) + (sizeof(uint32_t) * static_cast<size_t>(entryCount));
272    }
273
274    uint8_t targetTypeId() const {
275        if (mData == NULL) {
276            return 0;
277        }
278        return dtohs(mData[0]);
279    }
280
281    uint8_t overlayTypeId() const {
282        if (mData == NULL) {
283            return 0;
284        }
285        return dtohs(mData[1]);
286    }
287
288    status_t setTo(const void* entryHeader, size_t size) {
289        if (reinterpret_cast<uintptr_t>(entryHeader) & 0x03) {
290            ALOGE("idmap: entry header is not word aligned");
291            return UNKNOWN_ERROR;
292        }
293
294        if (size < sizeof(uint16_t) * 4) {
295            ALOGE("idmap: entry header is too small (%u bytes)", (uint32_t) size);
296            return UNKNOWN_ERROR;
297        }
298
299        const uint16_t* header = reinterpret_cast<const uint16_t*>(entryHeader);
300        const uint16_t targetTypeId = dtohs(header[0]);
301        const uint16_t overlayTypeId = dtohs(header[1]);
302        if (targetTypeId == 0 || overlayTypeId == 0 || targetTypeId > 255 || overlayTypeId > 255) {
303            ALOGE("idmap: invalid type map (%u -> %u)", targetTypeId, overlayTypeId);
304            return UNKNOWN_ERROR;
305        }
306
307        uint16_t entryCount = dtohs(header[2]);
308        if (size < sizeof(uint32_t) * (entryCount + 2)) {
309            ALOGE("idmap: too small (%u bytes) for the number of entries (%u)",
310                    (uint32_t) size, (uint32_t) entryCount);
311            return UNKNOWN_ERROR;
312        }
313        mData = header;
314        return NO_ERROR;
315    }
316
317    status_t lookup(uint16_t entryId, uint16_t* outEntryId) const {
318        uint16_t entryCount = dtohs(mData[2]);
319        uint16_t offset = dtohs(mData[3]);
320
321        if (entryId < offset) {
322            // The entry is not present in this idmap
323            return BAD_INDEX;
324        }
325
326        entryId -= offset;
327
328        if (entryId >= entryCount) {
329            // The entry is not present in this idmap
330            return BAD_INDEX;
331        }
332
333        // It is safe to access the type here without checking the size because
334        // we have checked this when it was first loaded.
335        const uint32_t* entries = reinterpret_cast<const uint32_t*>(mData) + 2;
336        uint32_t mappedEntry = dtohl(entries[entryId]);
337        if (mappedEntry == 0xffffffff) {
338            // This entry is not present in this idmap
339            return BAD_INDEX;
340        }
341        *outEntryId = static_cast<uint16_t>(mappedEntry);
342        return NO_ERROR;
343    }
344
345private:
346    const uint16_t* mData;
347};
348
349status_t parseIdmap(const void* idmap, size_t size, uint8_t* outPackageId, KeyedVector<uint8_t, IdmapEntries>* outMap) {
350    if (!assertIdmapHeader(idmap, size)) {
351        return UNKNOWN_ERROR;
352    }
353
354    size -= ResTable::IDMAP_HEADER_SIZE_BYTES;
355    if (size < sizeof(uint16_t) * 2) {
356        ALOGE("idmap: too small to contain any mapping");
357        return UNKNOWN_ERROR;
358    }
359
360    const uint16_t* data = reinterpret_cast<const uint16_t*>(
361            reinterpret_cast<const uint8_t*>(idmap) + ResTable::IDMAP_HEADER_SIZE_BYTES);
362
363    uint16_t targetPackageId = dtohs(*(data++));
364    if (targetPackageId == 0 || targetPackageId > 255) {
365        ALOGE("idmap: target package ID is invalid (%02x)", targetPackageId);
366        return UNKNOWN_ERROR;
367    }
368
369    uint16_t mapCount = dtohs(*(data++));
370    if (mapCount == 0) {
371        ALOGE("idmap: no mappings");
372        return UNKNOWN_ERROR;
373    }
374
375    if (mapCount > 255) {
376        ALOGW("idmap: too many mappings. Only 255 are possible but %u are present", (uint32_t) mapCount);
377    }
378
379    while (size > sizeof(uint16_t) * 4) {
380        IdmapEntries entries;
381        status_t err = entries.setTo(data, size);
382        if (err != NO_ERROR) {
383            return err;
384        }
385
386        ssize_t index = outMap->add(entries.overlayTypeId(), entries);
387        if (index < 0) {
388            return NO_MEMORY;
389        }
390
391        data += entries.byteSize() / sizeof(uint16_t);
392        size -= entries.byteSize();
393    }
394
395    if (outPackageId != NULL) {
396        *outPackageId = static_cast<uint8_t>(targetPackageId);
397    }
398    return NO_ERROR;
399}
400
401Res_png_9patch* Res_png_9patch::deserialize(void* inData)
402{
403
404    Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(inData);
405    patch->wasDeserialized = true;
406    fill9patchOffsets(patch);
407
408    return patch;
409}
410
411// --------------------------------------------------------------------
412// --------------------------------------------------------------------
413// --------------------------------------------------------------------
414
415ResStringPool::ResStringPool()
416    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
417{
418}
419
420ResStringPool::ResStringPool(const void* data, size_t size, bool copyData)
421    : mError(NO_INIT), mOwnedData(NULL), mHeader(NULL), mCache(NULL)
422{
423    setTo(data, size, copyData);
424}
425
426ResStringPool::~ResStringPool()
427{
428    uninit();
429}
430
431void ResStringPool::setToEmpty()
432{
433    uninit();
434
435    mOwnedData = calloc(1, sizeof(ResStringPool_header));
436    ResStringPool_header* header = (ResStringPool_header*) mOwnedData;
437    mSize = 0;
438    mEntries = NULL;
439    mStrings = NULL;
440    mStringPoolSize = 0;
441    mEntryStyles = NULL;
442    mStyles = NULL;
443    mStylePoolSize = 0;
444    mHeader = (const ResStringPool_header*) header;
445}
446
447status_t ResStringPool::setTo(const void* data, size_t size, bool copyData)
448{
449    if (!data || !size) {
450        return (mError=BAD_TYPE);
451    }
452
453    uninit();
454
455    const bool notDeviceEndian = htods(0xf0) != 0xf0;
456
457    if (copyData || notDeviceEndian) {
458        mOwnedData = malloc(size);
459        if (mOwnedData == NULL) {
460            return (mError=NO_MEMORY);
461        }
462        memcpy(mOwnedData, data, size);
463        data = mOwnedData;
464    }
465
466    mHeader = (const ResStringPool_header*)data;
467
468    if (notDeviceEndian) {
469        ResStringPool_header* h = const_cast<ResStringPool_header*>(mHeader);
470        h->header.headerSize = dtohs(mHeader->header.headerSize);
471        h->header.type = dtohs(mHeader->header.type);
472        h->header.size = dtohl(mHeader->header.size);
473        h->stringCount = dtohl(mHeader->stringCount);
474        h->styleCount = dtohl(mHeader->styleCount);
475        h->flags = dtohl(mHeader->flags);
476        h->stringsStart = dtohl(mHeader->stringsStart);
477        h->stylesStart = dtohl(mHeader->stylesStart);
478    }
479
480    if (mHeader->header.headerSize > mHeader->header.size
481            || mHeader->header.size > size) {
482        ALOGW("Bad string block: header size %d or total size %d is larger than data size %d\n",
483                (int)mHeader->header.headerSize, (int)mHeader->header.size, (int)size);
484        return (mError=BAD_TYPE);
485    }
486    mSize = mHeader->header.size;
487    mEntries = (const uint32_t*)
488        (((const uint8_t*)data)+mHeader->header.headerSize);
489
490    if (mHeader->stringCount > 0) {
491        if ((mHeader->stringCount*sizeof(uint32_t) < mHeader->stringCount)  // uint32 overflow?
492            || (mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t)))
493                > size) {
494            ALOGW("Bad string block: entry of %d items extends past data size %d\n",
495                    (int)(mHeader->header.headerSize+(mHeader->stringCount*sizeof(uint32_t))),
496                    (int)size);
497            return (mError=BAD_TYPE);
498        }
499
500        size_t charSize;
501        if (mHeader->flags&ResStringPool_header::UTF8_FLAG) {
502            charSize = sizeof(uint8_t);
503        } else {
504            charSize = sizeof(uint16_t);
505        }
506
507        // There should be at least space for the smallest string
508        // (2 bytes length, null terminator).
509        if (mHeader->stringsStart >= (mSize - sizeof(uint16_t))) {
510            ALOGW("Bad string block: string pool starts at %d, after total size %d\n",
511                    (int)mHeader->stringsStart, (int)mHeader->header.size);
512            return (mError=BAD_TYPE);
513        }
514
515        mStrings = (const void*)
516            (((const uint8_t*)data) + mHeader->stringsStart);
517
518        if (mHeader->styleCount == 0) {
519            mStringPoolSize = (mSize - mHeader->stringsStart) / charSize;
520        } else {
521            // check invariant: styles starts before end of data
522            if (mHeader->stylesStart >= (mSize - sizeof(uint16_t))) {
523                ALOGW("Bad style block: style block starts at %d past data size of %d\n",
524                    (int)mHeader->stylesStart, (int)mHeader->header.size);
525                return (mError=BAD_TYPE);
526            }
527            // check invariant: styles follow the strings
528            if (mHeader->stylesStart <= mHeader->stringsStart) {
529                ALOGW("Bad style block: style block starts at %d, before strings at %d\n",
530                    (int)mHeader->stylesStart, (int)mHeader->stringsStart);
531                return (mError=BAD_TYPE);
532            }
533            mStringPoolSize =
534                (mHeader->stylesStart-mHeader->stringsStart)/charSize;
535        }
536
537        // check invariant: stringCount > 0 requires a string pool to exist
538        if (mStringPoolSize == 0) {
539            ALOGW("Bad string block: stringCount is %d but pool size is 0\n", (int)mHeader->stringCount);
540            return (mError=BAD_TYPE);
541        }
542
543        if (notDeviceEndian) {
544            size_t i;
545            uint32_t* e = const_cast<uint32_t*>(mEntries);
546            for (i=0; i<mHeader->stringCount; i++) {
547                e[i] = dtohl(mEntries[i]);
548            }
549            if (!(mHeader->flags&ResStringPool_header::UTF8_FLAG)) {
550                const uint16_t* strings = (const uint16_t*)mStrings;
551                uint16_t* s = const_cast<uint16_t*>(strings);
552                for (i=0; i<mStringPoolSize; i++) {
553                    s[i] = dtohs(strings[i]);
554                }
555            }
556        }
557
558        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG &&
559                ((uint8_t*)mStrings)[mStringPoolSize-1] != 0) ||
560                (!mHeader->flags&ResStringPool_header::UTF8_FLAG &&
561                ((uint16_t*)mStrings)[mStringPoolSize-1] != 0)) {
562            ALOGW("Bad string block: last string is not 0-terminated\n");
563            return (mError=BAD_TYPE);
564        }
565    } else {
566        mStrings = NULL;
567        mStringPoolSize = 0;
568    }
569
570    if (mHeader->styleCount > 0) {
571        mEntryStyles = mEntries + mHeader->stringCount;
572        // invariant: integer overflow in calculating mEntryStyles
573        if (mEntryStyles < mEntries) {
574            ALOGW("Bad string block: integer overflow finding styles\n");
575            return (mError=BAD_TYPE);
576        }
577
578        if (((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader) > (int)size) {
579            ALOGW("Bad string block: entry of %d styles extends past data size %d\n",
580                    (int)((const uint8_t*)mEntryStyles-(const uint8_t*)mHeader),
581                    (int)size);
582            return (mError=BAD_TYPE);
583        }
584        mStyles = (const uint32_t*)
585            (((const uint8_t*)data)+mHeader->stylesStart);
586        if (mHeader->stylesStart >= mHeader->header.size) {
587            ALOGW("Bad string block: style pool starts %d, after total size %d\n",
588                    (int)mHeader->stylesStart, (int)mHeader->header.size);
589            return (mError=BAD_TYPE);
590        }
591        mStylePoolSize =
592            (mHeader->header.size-mHeader->stylesStart)/sizeof(uint32_t);
593
594        if (notDeviceEndian) {
595            size_t i;
596            uint32_t* e = const_cast<uint32_t*>(mEntryStyles);
597            for (i=0; i<mHeader->styleCount; i++) {
598                e[i] = dtohl(mEntryStyles[i]);
599            }
600            uint32_t* s = const_cast<uint32_t*>(mStyles);
601            for (i=0; i<mStylePoolSize; i++) {
602                s[i] = dtohl(mStyles[i]);
603            }
604        }
605
606        const ResStringPool_span endSpan = {
607            { htodl(ResStringPool_span::END) },
608            htodl(ResStringPool_span::END), htodl(ResStringPool_span::END)
609        };
610        if (memcmp(&mStyles[mStylePoolSize-(sizeof(endSpan)/sizeof(uint32_t))],
611                   &endSpan, sizeof(endSpan)) != 0) {
612            ALOGW("Bad string block: last style is not 0xFFFFFFFF-terminated\n");
613            return (mError=BAD_TYPE);
614        }
615    } else {
616        mEntryStyles = NULL;
617        mStyles = NULL;
618        mStylePoolSize = 0;
619    }
620
621    return (mError=NO_ERROR);
622}
623
624status_t ResStringPool::getError() const
625{
626    return mError;
627}
628
629void ResStringPool::uninit()
630{
631    mError = NO_INIT;
632    if (mHeader != NULL && mCache != NULL) {
633        for (size_t x = 0; x < mHeader->stringCount; x++) {
634            if (mCache[x] != NULL) {
635                free(mCache[x]);
636                mCache[x] = NULL;
637            }
638        }
639        free(mCache);
640        mCache = NULL;
641    }
642    if (mOwnedData) {
643        free(mOwnedData);
644        mOwnedData = NULL;
645    }
646}
647
648/**
649 * Strings in UTF-16 format have length indicated by a length encoded in the
650 * stored data. It is either 1 or 2 characters of length data. This allows a
651 * maximum length of 0x7FFFFFF (2147483647 bytes), but if you're storing that
652 * much data in a string, you're abusing them.
653 *
654 * If the high bit is set, then there are two characters or 4 bytes of length
655 * data encoded. In that case, drop the high bit of the first character and
656 * add it together with the next character.
657 */
658static inline size_t
659decodeLength(const uint16_t** str)
660{
661    size_t len = **str;
662    if ((len & 0x8000) != 0) {
663        (*str)++;
664        len = ((len & 0x7FFF) << 16) | **str;
665    }
666    (*str)++;
667    return len;
668}
669
670/**
671 * Strings in UTF-8 format have length indicated by a length encoded in the
672 * stored data. It is either 1 or 2 characters of length data. This allows a
673 * maximum length of 0x7FFF (32767 bytes), but you should consider storing
674 * text in another way if you're using that much data in a single string.
675 *
676 * If the high bit is set, then there are two characters or 2 bytes of length
677 * data encoded. In that case, drop the high bit of the first character and
678 * add it together with the next character.
679 */
680static inline size_t
681decodeLength(const uint8_t** str)
682{
683    size_t len = **str;
684    if ((len & 0x80) != 0) {
685        (*str)++;
686        len = ((len & 0x7F) << 8) | **str;
687    }
688    (*str)++;
689    return len;
690}
691
692const char16_t* ResStringPool::stringAt(size_t idx, size_t* u16len) const
693{
694    if (mError == NO_ERROR && idx < mHeader->stringCount) {
695        const bool isUTF8 = (mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0;
696        const uint32_t off = mEntries[idx]/(isUTF8?sizeof(uint8_t):sizeof(uint16_t));
697        if (off < (mStringPoolSize-1)) {
698            if (!isUTF8) {
699                const uint16_t* strings = (uint16_t*)mStrings;
700                const uint16_t* str = strings+off;
701
702                *u16len = decodeLength(&str);
703                if ((uint32_t)(str+*u16len-strings) < mStringPoolSize) {
704                    return reinterpret_cast<const char16_t*>(str);
705                } else {
706                    ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
707                            (int)idx, (int)(str+*u16len-strings), (int)mStringPoolSize);
708                }
709            } else {
710                const uint8_t* strings = (uint8_t*)mStrings;
711                const uint8_t* u8str = strings+off;
712
713                *u16len = decodeLength(&u8str);
714                size_t u8len = decodeLength(&u8str);
715
716                // encLen must be less than 0x7FFF due to encoding.
717                if ((uint32_t)(u8str+u8len-strings) < mStringPoolSize) {
718                    AutoMutex lock(mDecodeLock);
719
720                    if (mCache == NULL) {
721#ifndef HAVE_ANDROID_OS
722                        STRING_POOL_NOISY(ALOGI("CREATING STRING CACHE OF %d bytes",
723                                mHeader->stringCount*sizeof(char16_t**)));
724#else
725                        // We do not want to be in this case when actually running Android.
726                        ALOGW("CREATING STRING CACHE OF %d bytes",
727                                mHeader->stringCount*sizeof(char16_t**));
728#endif
729                        mCache = (char16_t**)calloc(mHeader->stringCount, sizeof(char16_t**));
730                        if (mCache == NULL) {
731                            ALOGW("No memory trying to allocate decode cache table of %d bytes\n",
732                                    (int)(mHeader->stringCount*sizeof(char16_t**)));
733                            return NULL;
734                        }
735                    }
736
737                    if (mCache[idx] != NULL) {
738                        return mCache[idx];
739                    }
740
741                    ssize_t actualLen = utf8_to_utf16_length(u8str, u8len);
742                    if (actualLen < 0 || (size_t)actualLen != *u16len) {
743                        ALOGW("Bad string block: string #%lld decoded length is not correct "
744                                "%lld vs %llu\n",
745                                (long long)idx, (long long)actualLen, (long long)*u16len);
746                        return NULL;
747                    }
748
749                    char16_t *u16str = (char16_t *)calloc(*u16len+1, sizeof(char16_t));
750                    if (!u16str) {
751                        ALOGW("No memory when trying to allocate decode cache for string #%d\n",
752                                (int)idx);
753                        return NULL;
754                    }
755
756                    STRING_POOL_NOISY(ALOGI("Caching UTF8 string: %s", u8str));
757                    utf8_to_utf16(u8str, u8len, u16str);
758                    mCache[idx] = u16str;
759                    return u16str;
760                } else {
761                    ALOGW("Bad string block: string #%lld extends to %lld, past end at %lld\n",
762                            (long long)idx, (long long)(u8str+u8len-strings),
763                            (long long)mStringPoolSize);
764                }
765            }
766        } else {
767            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
768                    (int)idx, (int)(off*sizeof(uint16_t)),
769                    (int)(mStringPoolSize*sizeof(uint16_t)));
770        }
771    }
772    return NULL;
773}
774
775const char* ResStringPool::string8At(size_t idx, size_t* outLen) const
776{
777    if (mError == NO_ERROR && idx < mHeader->stringCount) {
778        if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) == 0) {
779            return NULL;
780        }
781        const uint32_t off = mEntries[idx]/sizeof(char);
782        if (off < (mStringPoolSize-1)) {
783            const uint8_t* strings = (uint8_t*)mStrings;
784            const uint8_t* str = strings+off;
785            *outLen = decodeLength(&str);
786            size_t encLen = decodeLength(&str);
787            if ((uint32_t)(str+encLen-strings) < mStringPoolSize) {
788                return (const char*)str;
789            } else {
790                ALOGW("Bad string block: string #%d extends to %d, past end at %d\n",
791                        (int)idx, (int)(str+encLen-strings), (int)mStringPoolSize);
792            }
793        } else {
794            ALOGW("Bad string block: string #%d entry is at %d, past end at %d\n",
795                    (int)idx, (int)(off*sizeof(uint16_t)),
796                    (int)(mStringPoolSize*sizeof(uint16_t)));
797        }
798    }
799    return NULL;
800}
801
802const String8 ResStringPool::string8ObjectAt(size_t idx) const
803{
804    size_t len;
805    const char *str = string8At(idx, &len);
806    if (str != NULL) {
807        return String8(str, len);
808    }
809
810    const char16_t *str16 = stringAt(idx, &len);
811    if (str16 != NULL) {
812        return String8(str16, len);
813    }
814    return String8();
815}
816
817const ResStringPool_span* ResStringPool::styleAt(const ResStringPool_ref& ref) const
818{
819    return styleAt(ref.index);
820}
821
822const ResStringPool_span* ResStringPool::styleAt(size_t idx) const
823{
824    if (mError == NO_ERROR && idx < mHeader->styleCount) {
825        const uint32_t off = (mEntryStyles[idx]/sizeof(uint32_t));
826        if (off < mStylePoolSize) {
827            return (const ResStringPool_span*)(mStyles+off);
828        } else {
829            ALOGW("Bad string block: style #%d entry is at %d, past end at %d\n",
830                    (int)idx, (int)(off*sizeof(uint32_t)),
831                    (int)(mStylePoolSize*sizeof(uint32_t)));
832        }
833    }
834    return NULL;
835}
836
837ssize_t ResStringPool::indexOfString(const char16_t* str, size_t strLen) const
838{
839    if (mError != NO_ERROR) {
840        return mError;
841    }
842
843    size_t len;
844
845    if ((mHeader->flags&ResStringPool_header::UTF8_FLAG) != 0) {
846        STRING_POOL_NOISY(ALOGI("indexOfString UTF-8: %s", String8(str, strLen).string()));
847
848        // The string pool contains UTF 8 strings; we don't want to cause
849        // temporary UTF-16 strings to be created as we search.
850        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
851            // Do a binary search for the string...  this is a little tricky,
852            // because the strings are sorted with strzcmp16().  So to match
853            // the ordering, we need to convert strings in the pool to UTF-16.
854            // But we don't want to hit the cache, so instead we will have a
855            // local temporary allocation for the conversions.
856            char16_t* convBuffer = (char16_t*)malloc(strLen+4);
857            ssize_t l = 0;
858            ssize_t h = mHeader->stringCount-1;
859
860            ssize_t mid;
861            while (l <= h) {
862                mid = l + (h - l)/2;
863                const uint8_t* s = (const uint8_t*)string8At(mid, &len);
864                int c;
865                if (s != NULL) {
866                    char16_t* end = utf8_to_utf16_n(s, len, convBuffer, strLen+3);
867                    *end = 0;
868                    c = strzcmp16(convBuffer, end-convBuffer, str, strLen);
869                } else {
870                    c = -1;
871                }
872                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
873                             (const char*)s, c, (int)l, (int)mid, (int)h));
874                if (c == 0) {
875                    STRING_POOL_NOISY(ALOGI("MATCH!"));
876                    free(convBuffer);
877                    return mid;
878                } else if (c < 0) {
879                    l = mid + 1;
880                } else {
881                    h = mid - 1;
882                }
883            }
884            free(convBuffer);
885        } else {
886            // It is unusual to get the ID from an unsorted string block...
887            // most often this happens because we want to get IDs for style
888            // span tags; since those always appear at the end of the string
889            // block, start searching at the back.
890            String8 str8(str, strLen);
891            const size_t str8Len = str8.size();
892            for (int i=mHeader->stringCount-1; i>=0; i--) {
893                const char* s = string8At(i, &len);
894                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
895                             String8(s).string(),
896                             i));
897                if (s && str8Len == len && memcmp(s, str8.string(), str8Len) == 0) {
898                    STRING_POOL_NOISY(ALOGI("MATCH!"));
899                    return i;
900                }
901            }
902        }
903
904    } else {
905        STRING_POOL_NOISY(ALOGI("indexOfString UTF-16: %s", String8(str, strLen).string()));
906
907        if (mHeader->flags&ResStringPool_header::SORTED_FLAG) {
908            // Do a binary search for the string...
909            ssize_t l = 0;
910            ssize_t h = mHeader->stringCount-1;
911
912            ssize_t mid;
913            while (l <= h) {
914                mid = l + (h - l)/2;
915                const char16_t* s = stringAt(mid, &len);
916                int c = s ? strzcmp16(s, len, str, strLen) : -1;
917                STRING_POOL_NOISY(ALOGI("Looking at %s, cmp=%d, l/mid/h=%d/%d/%d\n",
918                             String8(s).string(),
919                             c, (int)l, (int)mid, (int)h));
920                if (c == 0) {
921                    STRING_POOL_NOISY(ALOGI("MATCH!"));
922                    return mid;
923                } else if (c < 0) {
924                    l = mid + 1;
925                } else {
926                    h = mid - 1;
927                }
928            }
929        } else {
930            // It is unusual to get the ID from an unsorted string block...
931            // most often this happens because we want to get IDs for style
932            // span tags; since those always appear at the end of the string
933            // block, start searching at the back.
934            for (int i=mHeader->stringCount-1; i>=0; i--) {
935                const char16_t* s = stringAt(i, &len);
936                STRING_POOL_NOISY(ALOGI("Looking at %s, i=%d\n",
937                             String8(s).string(),
938                             i));
939                if (s && strLen == len && strzcmp16(s, len, str, strLen) == 0) {
940                    STRING_POOL_NOISY(ALOGI("MATCH!"));
941                    return i;
942                }
943            }
944        }
945    }
946
947    return NAME_NOT_FOUND;
948}
949
950size_t ResStringPool::size() const
951{
952    return (mError == NO_ERROR) ? mHeader->stringCount : 0;
953}
954
955size_t ResStringPool::styleCount() const
956{
957    return (mError == NO_ERROR) ? mHeader->styleCount : 0;
958}
959
960size_t ResStringPool::bytes() const
961{
962    return (mError == NO_ERROR) ? mHeader->header.size : 0;
963}
964
965bool ResStringPool::isSorted() const
966{
967    return (mHeader->flags&ResStringPool_header::SORTED_FLAG)!=0;
968}
969
970bool ResStringPool::isUTF8() const
971{
972    return (mHeader->flags&ResStringPool_header::UTF8_FLAG)!=0;
973}
974
975// --------------------------------------------------------------------
976// --------------------------------------------------------------------
977// --------------------------------------------------------------------
978
979ResXMLParser::ResXMLParser(const ResXMLTree& tree)
980    : mTree(tree), mEventCode(BAD_DOCUMENT)
981{
982}
983
984void ResXMLParser::restart()
985{
986    mCurNode = NULL;
987    mEventCode = mTree.mError == NO_ERROR ? START_DOCUMENT : BAD_DOCUMENT;
988}
989const ResStringPool& ResXMLParser::getStrings() const
990{
991    return mTree.mStrings;
992}
993
994ResXMLParser::event_code_t ResXMLParser::getEventType() const
995{
996    return mEventCode;
997}
998
999ResXMLParser::event_code_t ResXMLParser::next()
1000{
1001    if (mEventCode == START_DOCUMENT) {
1002        mCurNode = mTree.mRootNode;
1003        mCurExt = mTree.mRootExt;
1004        return (mEventCode=mTree.mRootCode);
1005    } else if (mEventCode >= FIRST_CHUNK_CODE) {
1006        return nextNode();
1007    }
1008    return mEventCode;
1009}
1010
1011int32_t ResXMLParser::getCommentID() const
1012{
1013    return mCurNode != NULL ? dtohl(mCurNode->comment.index) : -1;
1014}
1015
1016const char16_t* ResXMLParser::getComment(size_t* outLen) const
1017{
1018    int32_t id = getCommentID();
1019    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1020}
1021
1022uint32_t ResXMLParser::getLineNumber() const
1023{
1024    return mCurNode != NULL ? dtohl(mCurNode->lineNumber) : -1;
1025}
1026
1027int32_t ResXMLParser::getTextID() const
1028{
1029    if (mEventCode == TEXT) {
1030        return dtohl(((const ResXMLTree_cdataExt*)mCurExt)->data.index);
1031    }
1032    return -1;
1033}
1034
1035const char16_t* ResXMLParser::getText(size_t* outLen) const
1036{
1037    int32_t id = getTextID();
1038    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1039}
1040
1041ssize_t ResXMLParser::getTextValue(Res_value* outValue) const
1042{
1043    if (mEventCode == TEXT) {
1044        outValue->copyFrom_dtoh(((const ResXMLTree_cdataExt*)mCurExt)->typedData);
1045        return sizeof(Res_value);
1046    }
1047    return BAD_TYPE;
1048}
1049
1050int32_t ResXMLParser::getNamespacePrefixID() const
1051{
1052    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1053        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->prefix.index);
1054    }
1055    return -1;
1056}
1057
1058const char16_t* ResXMLParser::getNamespacePrefix(size_t* outLen) const
1059{
1060    int32_t id = getNamespacePrefixID();
1061    //printf("prefix=%d  event=%p\n", id, mEventCode);
1062    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1063}
1064
1065int32_t ResXMLParser::getNamespaceUriID() const
1066{
1067    if (mEventCode == START_NAMESPACE || mEventCode == END_NAMESPACE) {
1068        return dtohl(((const ResXMLTree_namespaceExt*)mCurExt)->uri.index);
1069    }
1070    return -1;
1071}
1072
1073const char16_t* ResXMLParser::getNamespaceUri(size_t* outLen) const
1074{
1075    int32_t id = getNamespaceUriID();
1076    //printf("uri=%d  event=%p\n", id, mEventCode);
1077    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1078}
1079
1080int32_t ResXMLParser::getElementNamespaceID() const
1081{
1082    if (mEventCode == START_TAG) {
1083        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->ns.index);
1084    }
1085    if (mEventCode == END_TAG) {
1086        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->ns.index);
1087    }
1088    return -1;
1089}
1090
1091const char16_t* ResXMLParser::getElementNamespace(size_t* outLen) const
1092{
1093    int32_t id = getElementNamespaceID();
1094    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1095}
1096
1097int32_t ResXMLParser::getElementNameID() const
1098{
1099    if (mEventCode == START_TAG) {
1100        return dtohl(((const ResXMLTree_attrExt*)mCurExt)->name.index);
1101    }
1102    if (mEventCode == END_TAG) {
1103        return dtohl(((const ResXMLTree_endElementExt*)mCurExt)->name.index);
1104    }
1105    return -1;
1106}
1107
1108const char16_t* ResXMLParser::getElementName(size_t* outLen) const
1109{
1110    int32_t id = getElementNameID();
1111    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1112}
1113
1114size_t ResXMLParser::getAttributeCount() const
1115{
1116    if (mEventCode == START_TAG) {
1117        return dtohs(((const ResXMLTree_attrExt*)mCurExt)->attributeCount);
1118    }
1119    return 0;
1120}
1121
1122int32_t ResXMLParser::getAttributeNamespaceID(size_t idx) const
1123{
1124    if (mEventCode == START_TAG) {
1125        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1126        if (idx < dtohs(tag->attributeCount)) {
1127            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1128                (((const uint8_t*)tag)
1129                 + dtohs(tag->attributeStart)
1130                 + (dtohs(tag->attributeSize)*idx));
1131            return dtohl(attr->ns.index);
1132        }
1133    }
1134    return -2;
1135}
1136
1137const char16_t* ResXMLParser::getAttributeNamespace(size_t idx, size_t* outLen) const
1138{
1139    int32_t id = getAttributeNamespaceID(idx);
1140    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1141    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1142    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1143}
1144
1145const char* ResXMLParser::getAttributeNamespace8(size_t idx, size_t* outLen) const
1146{
1147    int32_t id = getAttributeNamespaceID(idx);
1148    //printf("attribute namespace=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1149    //XML_NOISY(printf("getAttributeNamespace 0x%x=0x%x\n", idx, id));
1150    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1151}
1152
1153int32_t ResXMLParser::getAttributeNameID(size_t idx) const
1154{
1155    if (mEventCode == START_TAG) {
1156        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1157        if (idx < dtohs(tag->attributeCount)) {
1158            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1159                (((const uint8_t*)tag)
1160                 + dtohs(tag->attributeStart)
1161                 + (dtohs(tag->attributeSize)*idx));
1162            return dtohl(attr->name.index);
1163        }
1164    }
1165    return -1;
1166}
1167
1168const char16_t* ResXMLParser::getAttributeName(size_t idx, size_t* outLen) const
1169{
1170    int32_t id = getAttributeNameID(idx);
1171    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1172    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1173    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1174}
1175
1176const char* ResXMLParser::getAttributeName8(size_t idx, size_t* outLen) const
1177{
1178    int32_t id = getAttributeNameID(idx);
1179    //printf("attribute name=%d  idx=%d  event=%p\n", id, idx, mEventCode);
1180    //XML_NOISY(printf("getAttributeName 0x%x=0x%x\n", idx, id));
1181    return id >= 0 ? mTree.mStrings.string8At(id, outLen) : NULL;
1182}
1183
1184uint32_t ResXMLParser::getAttributeNameResID(size_t idx) const
1185{
1186    int32_t id = getAttributeNameID(idx);
1187    if (id >= 0 && (size_t)id < mTree.mNumResIds) {
1188        return dtohl(mTree.mResIds[id]);
1189    }
1190    return 0;
1191}
1192
1193int32_t ResXMLParser::getAttributeValueStringID(size_t idx) const
1194{
1195    if (mEventCode == START_TAG) {
1196        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1197        if (idx < dtohs(tag->attributeCount)) {
1198            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1199                (((const uint8_t*)tag)
1200                 + dtohs(tag->attributeStart)
1201                 + (dtohs(tag->attributeSize)*idx));
1202            return dtohl(attr->rawValue.index);
1203        }
1204    }
1205    return -1;
1206}
1207
1208const char16_t* ResXMLParser::getAttributeStringValue(size_t idx, size_t* outLen) const
1209{
1210    int32_t id = getAttributeValueStringID(idx);
1211    //XML_NOISY(printf("getAttributeValue 0x%x=0x%x\n", idx, id));
1212    return id >= 0 ? mTree.mStrings.stringAt(id, outLen) : NULL;
1213}
1214
1215int32_t ResXMLParser::getAttributeDataType(size_t idx) const
1216{
1217    if (mEventCode == START_TAG) {
1218        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1219        if (idx < dtohs(tag->attributeCount)) {
1220            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1221                (((const uint8_t*)tag)
1222                 + dtohs(tag->attributeStart)
1223                 + (dtohs(tag->attributeSize)*idx));
1224            uint8_t type = attr->typedValue.dataType;
1225            if (type != Res_value::TYPE_DYNAMIC_REFERENCE) {
1226                return type;
1227            }
1228
1229            // This is a dynamic reference. We adjust those references
1230            // to regular references at this level, so lie to the caller.
1231            return Res_value::TYPE_REFERENCE;
1232        }
1233    }
1234    return Res_value::TYPE_NULL;
1235}
1236
1237int32_t ResXMLParser::getAttributeData(size_t idx) const
1238{
1239    if (mEventCode == START_TAG) {
1240        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1241        if (idx < dtohs(tag->attributeCount)) {
1242            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1243                (((const uint8_t*)tag)
1244                 + dtohs(tag->attributeStart)
1245                 + (dtohs(tag->attributeSize)*idx));
1246            if (attr->typedValue.dataType != Res_value::TYPE_DYNAMIC_REFERENCE ||
1247                    mTree.mDynamicRefTable == NULL) {
1248                return dtohl(attr->typedValue.data);
1249            }
1250
1251            uint32_t data = dtohl(attr->typedValue.data);
1252            if (mTree.mDynamicRefTable->lookupResourceId(&data) == NO_ERROR) {
1253                return data;
1254            }
1255        }
1256    }
1257    return 0;
1258}
1259
1260ssize_t ResXMLParser::getAttributeValue(size_t idx, Res_value* outValue) const
1261{
1262    if (mEventCode == START_TAG) {
1263        const ResXMLTree_attrExt* tag = (const ResXMLTree_attrExt*)mCurExt;
1264        if (idx < dtohs(tag->attributeCount)) {
1265            const ResXMLTree_attribute* attr = (const ResXMLTree_attribute*)
1266                (((const uint8_t*)tag)
1267                 + dtohs(tag->attributeStart)
1268                 + (dtohs(tag->attributeSize)*idx));
1269            outValue->copyFrom_dtoh(attr->typedValue);
1270            if (mTree.mDynamicRefTable != NULL &&
1271                    mTree.mDynamicRefTable->lookupResourceValue(outValue) != NO_ERROR) {
1272                return BAD_TYPE;
1273            }
1274            return sizeof(Res_value);
1275        }
1276    }
1277    return BAD_TYPE;
1278}
1279
1280ssize_t ResXMLParser::indexOfAttribute(const char* ns, const char* attr) const
1281{
1282    String16 nsStr(ns != NULL ? ns : "");
1283    String16 attrStr(attr);
1284    return indexOfAttribute(ns ? nsStr.string() : NULL, ns ? nsStr.size() : 0,
1285                            attrStr.string(), attrStr.size());
1286}
1287
1288ssize_t ResXMLParser::indexOfAttribute(const char16_t* ns, size_t nsLen,
1289                                       const char16_t* attr, size_t attrLen) const
1290{
1291    if (mEventCode == START_TAG) {
1292        if (attr == NULL) {
1293            return NAME_NOT_FOUND;
1294        }
1295        const size_t N = getAttributeCount();
1296        if (mTree.mStrings.isUTF8()) {
1297            String8 ns8, attr8;
1298            if (ns != NULL) {
1299                ns8 = String8(ns, nsLen);
1300            }
1301            attr8 = String8(attr, attrLen);
1302            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF8 %s (%d) / %s (%d)", ns8.string(), nsLen,
1303                    attr8.string(), attrLen));
1304            for (size_t i=0; i<N; i++) {
1305                size_t curNsLen = 0, curAttrLen = 0;
1306                const char* curNs = getAttributeNamespace8(i, &curNsLen);
1307                const char* curAttr = getAttributeName8(i, &curAttrLen);
1308                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)", curNs, curNsLen,
1309                        curAttr, curAttrLen));
1310                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1311                        && memcmp(attr8.string(), curAttr, attrLen) == 0) {
1312                    if (ns == NULL) {
1313                        if (curNs == NULL) {
1314                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1315                            return i;
1316                        }
1317                    } else if (curNs != NULL) {
1318                        //printf(" --> ns=%s, curNs=%s\n",
1319                        //       String8(ns).string(), String8(curNs).string());
1320                        if (memcmp(ns8.string(), curNs, nsLen) == 0) {
1321                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1322                            return i;
1323                        }
1324                    }
1325                }
1326            }
1327        } else {
1328            STRING_POOL_NOISY(ALOGI("indexOfAttribute UTF16 %s (%d) / %s (%d)",
1329                    String8(ns, nsLen).string(), nsLen,
1330                    String8(attr, attrLen).string(), attrLen));
1331            for (size_t i=0; i<N; i++) {
1332                size_t curNsLen = 0, curAttrLen = 0;
1333                const char16_t* curNs = getAttributeNamespace(i, &curNsLen);
1334                const char16_t* curAttr = getAttributeName(i, &curAttrLen);
1335                STRING_POOL_NOISY(ALOGI("  curNs=%s (%d), curAttr=%s (%d)",
1336                        String8(curNs, curNsLen).string(), curNsLen,
1337                        String8(curAttr, curAttrLen).string(), curAttrLen));
1338                if (curAttr != NULL && curNsLen == nsLen && curAttrLen == attrLen
1339                        && (memcmp(attr, curAttr, attrLen*sizeof(char16_t)) == 0)) {
1340                    if (ns == NULL) {
1341                        if (curNs == NULL) {
1342                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1343                            return i;
1344                        }
1345                    } else if (curNs != NULL) {
1346                        //printf(" --> ns=%s, curNs=%s\n",
1347                        //       String8(ns).string(), String8(curNs).string());
1348                        if (memcmp(ns, curNs, nsLen*sizeof(char16_t)) == 0) {
1349                            STRING_POOL_NOISY(ALOGI("  FOUND!"));
1350                            return i;
1351                        }
1352                    }
1353                }
1354            }
1355        }
1356    }
1357
1358    return NAME_NOT_FOUND;
1359}
1360
1361ssize_t ResXMLParser::indexOfID() const
1362{
1363    if (mEventCode == START_TAG) {
1364        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->idIndex);
1365        if (idx > 0) return (idx-1);
1366    }
1367    return NAME_NOT_FOUND;
1368}
1369
1370ssize_t ResXMLParser::indexOfClass() const
1371{
1372    if (mEventCode == START_TAG) {
1373        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->classIndex);
1374        if (idx > 0) return (idx-1);
1375    }
1376    return NAME_NOT_FOUND;
1377}
1378
1379ssize_t ResXMLParser::indexOfStyle() const
1380{
1381    if (mEventCode == START_TAG) {
1382        const ssize_t idx = dtohs(((const ResXMLTree_attrExt*)mCurExt)->styleIndex);
1383        if (idx > 0) return (idx-1);
1384    }
1385    return NAME_NOT_FOUND;
1386}
1387
1388ResXMLParser::event_code_t ResXMLParser::nextNode()
1389{
1390    if (mEventCode < 0) {
1391        return mEventCode;
1392    }
1393
1394    do {
1395        const ResXMLTree_node* next = (const ResXMLTree_node*)
1396            (((const uint8_t*)mCurNode) + dtohl(mCurNode->header.size));
1397        //ALOGW("Next node: prev=%p, next=%p\n", mCurNode, next);
1398
1399        if (((const uint8_t*)next) >= mTree.mDataEnd) {
1400            mCurNode = NULL;
1401            return (mEventCode=END_DOCUMENT);
1402        }
1403
1404        if (mTree.validateNode(next) != NO_ERROR) {
1405            mCurNode = NULL;
1406            return (mEventCode=BAD_DOCUMENT);
1407        }
1408
1409        mCurNode = next;
1410        const uint16_t headerSize = dtohs(next->header.headerSize);
1411        const uint32_t totalSize = dtohl(next->header.size);
1412        mCurExt = ((const uint8_t*)next) + headerSize;
1413        size_t minExtSize = 0;
1414        event_code_t eventCode = (event_code_t)dtohs(next->header.type);
1415        switch ((mEventCode=eventCode)) {
1416            case RES_XML_START_NAMESPACE_TYPE:
1417            case RES_XML_END_NAMESPACE_TYPE:
1418                minExtSize = sizeof(ResXMLTree_namespaceExt);
1419                break;
1420            case RES_XML_START_ELEMENT_TYPE:
1421                minExtSize = sizeof(ResXMLTree_attrExt);
1422                break;
1423            case RES_XML_END_ELEMENT_TYPE:
1424                minExtSize = sizeof(ResXMLTree_endElementExt);
1425                break;
1426            case RES_XML_CDATA_TYPE:
1427                minExtSize = sizeof(ResXMLTree_cdataExt);
1428                break;
1429            default:
1430                ALOGW("Unknown XML block: header type %d in node at %d\n",
1431                     (int)dtohs(next->header.type),
1432                     (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)));
1433                continue;
1434        }
1435
1436        if ((totalSize-headerSize) < minExtSize) {
1437            ALOGW("Bad XML block: header type 0x%x in node at 0x%x has size %d, need %d\n",
1438                 (int)dtohs(next->header.type),
1439                 (int)(((const uint8_t*)next)-((const uint8_t*)mTree.mHeader)),
1440                 (int)(totalSize-headerSize), (int)minExtSize);
1441            return (mEventCode=BAD_DOCUMENT);
1442        }
1443
1444        //printf("CurNode=%p, CurExt=%p, headerSize=%d, minExtSize=%d\n",
1445        //       mCurNode, mCurExt, headerSize, minExtSize);
1446
1447        return eventCode;
1448    } while (true);
1449}
1450
1451void ResXMLParser::getPosition(ResXMLParser::ResXMLPosition* pos) const
1452{
1453    pos->eventCode = mEventCode;
1454    pos->curNode = mCurNode;
1455    pos->curExt = mCurExt;
1456}
1457
1458void ResXMLParser::setPosition(const ResXMLParser::ResXMLPosition& pos)
1459{
1460    mEventCode = pos.eventCode;
1461    mCurNode = pos.curNode;
1462    mCurExt = pos.curExt;
1463}
1464
1465// --------------------------------------------------------------------
1466
1467static volatile int32_t gCount = 0;
1468
1469ResXMLTree::ResXMLTree(const DynamicRefTable* dynamicRefTable)
1470    : ResXMLParser(*this)
1471    , mDynamicRefTable(dynamicRefTable)
1472    , mError(NO_INIT), mOwnedData(NULL)
1473{
1474    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1475    restart();
1476}
1477
1478ResXMLTree::ResXMLTree()
1479    : ResXMLParser(*this)
1480    , mDynamicRefTable(NULL)
1481    , mError(NO_INIT), mOwnedData(NULL)
1482{
1483    //ALOGI("Creating ResXMLTree %p #%d\n", this, android_atomic_inc(&gCount)+1);
1484    restart();
1485}
1486
1487ResXMLTree::~ResXMLTree()
1488{
1489    //ALOGI("Destroying ResXMLTree in %p #%d\n", this, android_atomic_dec(&gCount)-1);
1490    uninit();
1491}
1492
1493status_t ResXMLTree::setTo(const void* data, size_t size, bool copyData)
1494{
1495    uninit();
1496    mEventCode = START_DOCUMENT;
1497
1498    if (!data || !size) {
1499        return (mError=BAD_TYPE);
1500    }
1501
1502    if (copyData) {
1503        mOwnedData = malloc(size);
1504        if (mOwnedData == NULL) {
1505            return (mError=NO_MEMORY);
1506        }
1507        memcpy(mOwnedData, data, size);
1508        data = mOwnedData;
1509    }
1510
1511    mHeader = (const ResXMLTree_header*)data;
1512    mSize = dtohl(mHeader->header.size);
1513    if (dtohs(mHeader->header.headerSize) > mSize || mSize > size) {
1514        ALOGW("Bad XML block: header size %d or total size %d is larger than data size %d\n",
1515             (int)dtohs(mHeader->header.headerSize),
1516             (int)dtohl(mHeader->header.size), (int)size);
1517        mError = BAD_TYPE;
1518        restart();
1519        return mError;
1520    }
1521    mDataEnd = ((const uint8_t*)mHeader) + mSize;
1522
1523    mStrings.uninit();
1524    mRootNode = NULL;
1525    mResIds = NULL;
1526    mNumResIds = 0;
1527
1528    // First look for a couple interesting chunks: the string block
1529    // and first XML node.
1530    const ResChunk_header* chunk =
1531        (const ResChunk_header*)(((const uint8_t*)mHeader) + dtohs(mHeader->header.headerSize));
1532    const ResChunk_header* lastChunk = chunk;
1533    while (((const uint8_t*)chunk) < (mDataEnd-sizeof(ResChunk_header)) &&
1534           ((const uint8_t*)chunk) < (mDataEnd-dtohl(chunk->size))) {
1535        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), mDataEnd, "XML");
1536        if (err != NO_ERROR) {
1537            mError = err;
1538            goto done;
1539        }
1540        const uint16_t type = dtohs(chunk->type);
1541        const size_t size = dtohl(chunk->size);
1542        XML_NOISY(printf("Scanning @ %p: type=0x%x, size=0x%x\n",
1543                     (void*)(((uint32_t)chunk)-((uint32_t)mHeader)), type, size));
1544        if (type == RES_STRING_POOL_TYPE) {
1545            mStrings.setTo(chunk, size);
1546        } else if (type == RES_XML_RESOURCE_MAP_TYPE) {
1547            mResIds = (const uint32_t*)
1548                (((const uint8_t*)chunk)+dtohs(chunk->headerSize));
1549            mNumResIds = (dtohl(chunk->size)-dtohs(chunk->headerSize))/sizeof(uint32_t);
1550        } else if (type >= RES_XML_FIRST_CHUNK_TYPE
1551                   && type <= RES_XML_LAST_CHUNK_TYPE) {
1552            if (validateNode((const ResXMLTree_node*)chunk) != NO_ERROR) {
1553                mError = BAD_TYPE;
1554                goto done;
1555            }
1556            mCurNode = (const ResXMLTree_node*)lastChunk;
1557            if (nextNode() == BAD_DOCUMENT) {
1558                mError = BAD_TYPE;
1559                goto done;
1560            }
1561            mRootNode = mCurNode;
1562            mRootExt = mCurExt;
1563            mRootCode = mEventCode;
1564            break;
1565        } else {
1566            XML_NOISY(printf("Skipping unknown chunk!\n"));
1567        }
1568        lastChunk = chunk;
1569        chunk = (const ResChunk_header*)
1570            (((const uint8_t*)chunk) + size);
1571    }
1572
1573    if (mRootNode == NULL) {
1574        ALOGW("Bad XML block: no root element node found\n");
1575        mError = BAD_TYPE;
1576        goto done;
1577    }
1578
1579    mError = mStrings.getError();
1580
1581done:
1582    restart();
1583    return mError;
1584}
1585
1586status_t ResXMLTree::getError() const
1587{
1588    return mError;
1589}
1590
1591void ResXMLTree::uninit()
1592{
1593    mError = NO_INIT;
1594    mStrings.uninit();
1595    if (mOwnedData) {
1596        free(mOwnedData);
1597        mOwnedData = NULL;
1598    }
1599    restart();
1600}
1601
1602status_t ResXMLTree::validateNode(const ResXMLTree_node* node) const
1603{
1604    const uint16_t eventCode = dtohs(node->header.type);
1605
1606    status_t err = validate_chunk(
1607        &node->header, sizeof(ResXMLTree_node),
1608        mDataEnd, "ResXMLTree_node");
1609
1610    if (err >= NO_ERROR) {
1611        // Only perform additional validation on START nodes
1612        if (eventCode != RES_XML_START_ELEMENT_TYPE) {
1613            return NO_ERROR;
1614        }
1615
1616        const uint16_t headerSize = dtohs(node->header.headerSize);
1617        const uint32_t size = dtohl(node->header.size);
1618        const ResXMLTree_attrExt* attrExt = (const ResXMLTree_attrExt*)
1619            (((const uint8_t*)node) + headerSize);
1620        // check for sensical values pulled out of the stream so far...
1621        if ((size >= headerSize + sizeof(ResXMLTree_attrExt))
1622                && ((void*)attrExt > (void*)node)) {
1623            const size_t attrSize = ((size_t)dtohs(attrExt->attributeSize))
1624                * dtohs(attrExt->attributeCount);
1625            if ((dtohs(attrExt->attributeStart)+attrSize) <= (size-headerSize)) {
1626                return NO_ERROR;
1627            }
1628            ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1629                    (unsigned int)(dtohs(attrExt->attributeStart)+attrSize),
1630                    (unsigned int)(size-headerSize));
1631        }
1632        else {
1633            ALOGW("Bad XML start block: node header size 0x%x, size 0x%x\n",
1634                (unsigned int)headerSize, (unsigned int)size);
1635        }
1636        return BAD_TYPE;
1637    }
1638
1639    return err;
1640
1641#if 0
1642    const bool isStart = dtohs(node->header.type) == RES_XML_START_ELEMENT_TYPE;
1643
1644    const uint16_t headerSize = dtohs(node->header.headerSize);
1645    const uint32_t size = dtohl(node->header.size);
1646
1647    if (headerSize >= (isStart ? sizeof(ResXMLTree_attrNode) : sizeof(ResXMLTree_node))) {
1648        if (size >= headerSize) {
1649            if (((const uint8_t*)node) <= (mDataEnd-size)) {
1650                if (!isStart) {
1651                    return NO_ERROR;
1652                }
1653                if ((((size_t)dtohs(node->attributeSize))*dtohs(node->attributeCount))
1654                        <= (size-headerSize)) {
1655                    return NO_ERROR;
1656                }
1657                ALOGW("Bad XML block: node attributes use 0x%x bytes, only have 0x%x bytes\n",
1658                        ((int)dtohs(node->attributeSize))*dtohs(node->attributeCount),
1659                        (int)(size-headerSize));
1660                return BAD_TYPE;
1661            }
1662            ALOGW("Bad XML block: node at 0x%x extends beyond data end 0x%x\n",
1663                    (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)), (int)mSize);
1664            return BAD_TYPE;
1665        }
1666        ALOGW("Bad XML block: node at 0x%x header size 0x%x smaller than total size 0x%x\n",
1667                (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1668                (int)headerSize, (int)size);
1669        return BAD_TYPE;
1670    }
1671    ALOGW("Bad XML block: node at 0x%x header size 0x%x too small\n",
1672            (int)(((const uint8_t*)node)-((const uint8_t*)mHeader)),
1673            (int)headerSize);
1674    return BAD_TYPE;
1675#endif
1676}
1677
1678// --------------------------------------------------------------------
1679// --------------------------------------------------------------------
1680// --------------------------------------------------------------------
1681
1682void ResTable_config::copyFromDeviceNoSwap(const ResTable_config& o) {
1683    const size_t size = dtohl(o.size);
1684    if (size >= sizeof(ResTable_config)) {
1685        *this = o;
1686    } else {
1687        memcpy(this, &o, size);
1688        memset(((uint8_t*)this)+size, 0, sizeof(ResTable_config)-size);
1689    }
1690}
1691
1692/* static */ size_t unpackLanguageOrRegion(const char in[2], const char base,
1693        char out[4]) {
1694  if (in[0] & 0x80) {
1695      // The high bit is "1", which means this is a packed three letter
1696      // language code.
1697
1698      // The smallest 5 bits of the second char are the first alphabet.
1699      const uint8_t first = in[1] & 0x1f;
1700      // The last three bits of the second char and the first two bits
1701      // of the first char are the second alphabet.
1702      const uint8_t second = ((in[1] & 0xe0) >> 5) + ((in[0] & 0x03) << 3);
1703      // Bits 3 to 7 (inclusive) of the first char are the third alphabet.
1704      const uint8_t third = (in[0] & 0x7c) >> 2;
1705
1706      out[0] = first + base;
1707      out[1] = second + base;
1708      out[2] = third + base;
1709      out[3] = 0;
1710
1711      return 3;
1712  }
1713
1714  if (in[0]) {
1715      memcpy(out, in, 2);
1716      memset(out + 2, 0, 2);
1717      return 2;
1718  }
1719
1720  memset(out, 0, 4);
1721  return 0;
1722}
1723
1724/* static */ void packLanguageOrRegion(const char* in, const char base,
1725        char out[2]) {
1726  if (in[2] == 0 || in[2] == '-') {
1727      out[0] = in[0];
1728      out[1] = in[1];
1729  } else {
1730      uint8_t first = (in[0] - base) & 0x007f;
1731      uint8_t second = (in[1] - base) & 0x007f;
1732      uint8_t third = (in[2] - base) & 0x007f;
1733
1734      out[0] = (0x80 | (third << 2) | (second >> 3));
1735      out[1] = ((second << 5) | first);
1736  }
1737}
1738
1739
1740void ResTable_config::packLanguage(const char* language) {
1741    packLanguageOrRegion(language, 'a', this->language);
1742}
1743
1744void ResTable_config::packRegion(const char* region) {
1745    packLanguageOrRegion(region, '0', this->country);
1746}
1747
1748size_t ResTable_config::unpackLanguage(char language[4]) const {
1749    return unpackLanguageOrRegion(this->language, 'a', language);
1750}
1751
1752size_t ResTable_config::unpackRegion(char region[4]) const {
1753    return unpackLanguageOrRegion(this->country, '0', region);
1754}
1755
1756
1757void ResTable_config::copyFromDtoH(const ResTable_config& o) {
1758    copyFromDeviceNoSwap(o);
1759    size = sizeof(ResTable_config);
1760    mcc = dtohs(mcc);
1761    mnc = dtohs(mnc);
1762    density = dtohs(density);
1763    screenWidth = dtohs(screenWidth);
1764    screenHeight = dtohs(screenHeight);
1765    sdkVersion = dtohs(sdkVersion);
1766    minorVersion = dtohs(minorVersion);
1767    smallestScreenWidthDp = dtohs(smallestScreenWidthDp);
1768    screenWidthDp = dtohs(screenWidthDp);
1769    screenHeightDp = dtohs(screenHeightDp);
1770}
1771
1772void ResTable_config::swapHtoD() {
1773    size = htodl(size);
1774    mcc = htods(mcc);
1775    mnc = htods(mnc);
1776    density = htods(density);
1777    screenWidth = htods(screenWidth);
1778    screenHeight = htods(screenHeight);
1779    sdkVersion = htods(sdkVersion);
1780    minorVersion = htods(minorVersion);
1781    smallestScreenWidthDp = htods(smallestScreenWidthDp);
1782    screenWidthDp = htods(screenWidthDp);
1783    screenHeightDp = htods(screenHeightDp);
1784}
1785
1786/* static */ inline int compareLocales(const ResTable_config &l, const ResTable_config &r) {
1787    if (l.locale != r.locale) {
1788        // NOTE: This is the old behaviour with respect to comparison orders.
1789        // The diff value here doesn't make much sense (given our bit packing scheme)
1790        // but it's stable, and that's all we need.
1791        return l.locale - r.locale;
1792    }
1793
1794    // The language & region are equal, so compare the scripts and variants.
1795    int script = memcmp(l.localeScript, r.localeScript, sizeof(l.localeScript));
1796    if (script) {
1797        return script;
1798    }
1799
1800    // The language, region and script are equal, so compare variants.
1801    //
1802    // This should happen very infrequently (if at all.)
1803    return memcmp(l.localeVariant, r.localeVariant, sizeof(l.localeVariant));
1804}
1805
1806int ResTable_config::compare(const ResTable_config& o) const {
1807    int32_t diff = (int32_t)(imsi - o.imsi);
1808    if (diff != 0) return diff;
1809    diff = compareLocales(*this, o);
1810    if (diff != 0) return diff;
1811    diff = (int32_t)(screenType - o.screenType);
1812    if (diff != 0) return diff;
1813    diff = (int32_t)(input - o.input);
1814    if (diff != 0) return diff;
1815    diff = (int32_t)(screenSize - o.screenSize);
1816    if (diff != 0) return diff;
1817    diff = (int32_t)(version - o.version);
1818    if (diff != 0) return diff;
1819    diff = (int32_t)(screenLayout - o.screenLayout);
1820    if (diff != 0) return diff;
1821    diff = (int32_t)(uiMode - o.uiMode);
1822    if (diff != 0) return diff;
1823    diff = (int32_t)(smallestScreenWidthDp - o.smallestScreenWidthDp);
1824    if (diff != 0) return diff;
1825    diff = (int32_t)(screenSizeDp - o.screenSizeDp);
1826    return (int)diff;
1827}
1828
1829int ResTable_config::compareLogical(const ResTable_config& o) const {
1830    if (mcc != o.mcc) {
1831        return mcc < o.mcc ? -1 : 1;
1832    }
1833    if (mnc != o.mnc) {
1834        return mnc < o.mnc ? -1 : 1;
1835    }
1836
1837    int diff = compareLocales(*this, o);
1838    if (diff < 0) {
1839        return -1;
1840    }
1841    if (diff > 0) {
1842        return 1;
1843    }
1844
1845    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) {
1846        return (screenLayout & MASK_LAYOUTDIR) < (o.screenLayout & MASK_LAYOUTDIR) ? -1 : 1;
1847    }
1848    if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1849        return smallestScreenWidthDp < o.smallestScreenWidthDp ? -1 : 1;
1850    }
1851    if (screenWidthDp != o.screenWidthDp) {
1852        return screenWidthDp < o.screenWidthDp ? -1 : 1;
1853    }
1854    if (screenHeightDp != o.screenHeightDp) {
1855        return screenHeightDp < o.screenHeightDp ? -1 : 1;
1856    }
1857    if (screenWidth != o.screenWidth) {
1858        return screenWidth < o.screenWidth ? -1 : 1;
1859    }
1860    if (screenHeight != o.screenHeight) {
1861        return screenHeight < o.screenHeight ? -1 : 1;
1862    }
1863    if (density != o.density) {
1864        return density < o.density ? -1 : 1;
1865    }
1866    if (orientation != o.orientation) {
1867        return orientation < o.orientation ? -1 : 1;
1868    }
1869    if (touchscreen != o.touchscreen) {
1870        return touchscreen < o.touchscreen ? -1 : 1;
1871    }
1872    if (input != o.input) {
1873        return input < o.input ? -1 : 1;
1874    }
1875    if (screenLayout != o.screenLayout) {
1876        return screenLayout < o.screenLayout ? -1 : 1;
1877    }
1878    if (uiMode != o.uiMode) {
1879        return uiMode < o.uiMode ? -1 : 1;
1880    }
1881    if (version != o.version) {
1882        return version < o.version ? -1 : 1;
1883    }
1884    return 0;
1885}
1886
1887int ResTable_config::diff(const ResTable_config& o) const {
1888    int diffs = 0;
1889    if (mcc != o.mcc) diffs |= CONFIG_MCC;
1890    if (mnc != o.mnc) diffs |= CONFIG_MNC;
1891    if (orientation != o.orientation) diffs |= CONFIG_ORIENTATION;
1892    if (density != o.density) diffs |= CONFIG_DENSITY;
1893    if (touchscreen != o.touchscreen) diffs |= CONFIG_TOUCHSCREEN;
1894    if (((inputFlags^o.inputFlags)&(MASK_KEYSHIDDEN|MASK_NAVHIDDEN)) != 0)
1895            diffs |= CONFIG_KEYBOARD_HIDDEN;
1896    if (keyboard != o.keyboard) diffs |= CONFIG_KEYBOARD;
1897    if (navigation != o.navigation) diffs |= CONFIG_NAVIGATION;
1898    if (screenSize != o.screenSize) diffs |= CONFIG_SCREEN_SIZE;
1899    if (version != o.version) diffs |= CONFIG_VERSION;
1900    if ((screenLayout & MASK_LAYOUTDIR) != (o.screenLayout & MASK_LAYOUTDIR)) diffs |= CONFIG_LAYOUTDIR;
1901    if ((screenLayout & ~MASK_LAYOUTDIR) != (o.screenLayout & ~MASK_LAYOUTDIR)) diffs |= CONFIG_SCREEN_LAYOUT;
1902    if (uiMode != o.uiMode) diffs |= CONFIG_UI_MODE;
1903    if (smallestScreenWidthDp != o.smallestScreenWidthDp) diffs |= CONFIG_SMALLEST_SCREEN_SIZE;
1904    if (screenSizeDp != o.screenSizeDp) diffs |= CONFIG_SCREEN_SIZE;
1905
1906    const int diff = compareLocales(*this, o);
1907    if (diff) diffs |= CONFIG_LOCALE;
1908
1909    return diffs;
1910}
1911
1912int ResTable_config::isLocaleMoreSpecificThan(const ResTable_config& o) const {
1913    if (locale || o.locale) {
1914        if (language[0] != o.language[0]) {
1915            if (!language[0]) return -1;
1916            if (!o.language[0]) return 1;
1917        }
1918
1919        if (country[0] != o.country[0]) {
1920            if (!country[0]) return -1;
1921            if (!o.country[0]) return 1;
1922        }
1923    }
1924
1925    // There isn't a well specified "importance" order between variants and
1926    // scripts. We can't easily tell whether, say "en-Latn-US" is more or less
1927    // specific than "en-US-POSIX".
1928    //
1929    // We therefore arbitrarily decide to give priority to variants over
1930    // scripts since it seems more useful to do so. We will consider
1931    // "en-US-POSIX" to be more specific than "en-Latn-US".
1932
1933    const int score = ((localeScript[0] != 0) ? 1 : 0) +
1934        ((localeVariant[0] != 0) ? 2 : 0);
1935
1936    const int oScore = ((o.localeScript[0] != 0) ? 1 : 0) +
1937        ((o.localeVariant[0] != 0) ? 2 : 0);
1938
1939    return score - oScore;
1940
1941}
1942
1943bool ResTable_config::isMoreSpecificThan(const ResTable_config& o) const {
1944    // The order of the following tests defines the importance of one
1945    // configuration parameter over another.  Those tests first are more
1946    // important, trumping any values in those following them.
1947    if (imsi || o.imsi) {
1948        if (mcc != o.mcc) {
1949            if (!mcc) return false;
1950            if (!o.mcc) return true;
1951        }
1952
1953        if (mnc != o.mnc) {
1954            if (!mnc) return false;
1955            if (!o.mnc) return true;
1956        }
1957    }
1958
1959    if (locale || o.locale) {
1960        const int diff = isLocaleMoreSpecificThan(o);
1961        if (diff < 0) {
1962            return false;
1963        }
1964
1965        if (diff > 0) {
1966            return true;
1967        }
1968    }
1969
1970    if (screenLayout || o.screenLayout) {
1971        if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0) {
1972            if (!(screenLayout & MASK_LAYOUTDIR)) return false;
1973            if (!(o.screenLayout & MASK_LAYOUTDIR)) return true;
1974        }
1975    }
1976
1977    if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
1978        if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
1979            if (!smallestScreenWidthDp) return false;
1980            if (!o.smallestScreenWidthDp) return true;
1981        }
1982    }
1983
1984    if (screenSizeDp || o.screenSizeDp) {
1985        if (screenWidthDp != o.screenWidthDp) {
1986            if (!screenWidthDp) return false;
1987            if (!o.screenWidthDp) return true;
1988        }
1989
1990        if (screenHeightDp != o.screenHeightDp) {
1991            if (!screenHeightDp) return false;
1992            if (!o.screenHeightDp) return true;
1993        }
1994    }
1995
1996    if (screenLayout || o.screenLayout) {
1997        if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0) {
1998            if (!(screenLayout & MASK_SCREENSIZE)) return false;
1999            if (!(o.screenLayout & MASK_SCREENSIZE)) return true;
2000        }
2001        if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0) {
2002            if (!(screenLayout & MASK_SCREENLONG)) return false;
2003            if (!(o.screenLayout & MASK_SCREENLONG)) return true;
2004        }
2005    }
2006
2007    if (orientation != o.orientation) {
2008        if (!orientation) return false;
2009        if (!o.orientation) return true;
2010    }
2011
2012    if (uiMode || o.uiMode) {
2013        if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0) {
2014            if (!(uiMode & MASK_UI_MODE_TYPE)) return false;
2015            if (!(o.uiMode & MASK_UI_MODE_TYPE)) return true;
2016        }
2017        if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0) {
2018            if (!(uiMode & MASK_UI_MODE_NIGHT)) return false;
2019            if (!(o.uiMode & MASK_UI_MODE_NIGHT)) return true;
2020        }
2021    }
2022
2023    // density is never 'more specific'
2024    // as the default just equals 160
2025
2026    if (touchscreen != o.touchscreen) {
2027        if (!touchscreen) return false;
2028        if (!o.touchscreen) return true;
2029    }
2030
2031    if (input || o.input) {
2032        if (((inputFlags^o.inputFlags) & MASK_KEYSHIDDEN) != 0) {
2033            if (!(inputFlags & MASK_KEYSHIDDEN)) return false;
2034            if (!(o.inputFlags & MASK_KEYSHIDDEN)) return true;
2035        }
2036
2037        if (((inputFlags^o.inputFlags) & MASK_NAVHIDDEN) != 0) {
2038            if (!(inputFlags & MASK_NAVHIDDEN)) return false;
2039            if (!(o.inputFlags & MASK_NAVHIDDEN)) return true;
2040        }
2041
2042        if (keyboard != o.keyboard) {
2043            if (!keyboard) return false;
2044            if (!o.keyboard) return true;
2045        }
2046
2047        if (navigation != o.navigation) {
2048            if (!navigation) return false;
2049            if (!o.navigation) return true;
2050        }
2051    }
2052
2053    if (screenSize || o.screenSize) {
2054        if (screenWidth != o.screenWidth) {
2055            if (!screenWidth) return false;
2056            if (!o.screenWidth) return true;
2057        }
2058
2059        if (screenHeight != o.screenHeight) {
2060            if (!screenHeight) return false;
2061            if (!o.screenHeight) return true;
2062        }
2063    }
2064
2065    if (version || o.version) {
2066        if (sdkVersion != o.sdkVersion) {
2067            if (!sdkVersion) return false;
2068            if (!o.sdkVersion) return true;
2069        }
2070
2071        if (minorVersion != o.minorVersion) {
2072            if (!minorVersion) return false;
2073            if (!o.minorVersion) return true;
2074        }
2075    }
2076    return false;
2077}
2078
2079bool ResTable_config::isBetterThan(const ResTable_config& o,
2080        const ResTable_config* requested) const {
2081    if (requested) {
2082        if (imsi || o.imsi) {
2083            if ((mcc != o.mcc) && requested->mcc) {
2084                return (mcc);
2085            }
2086
2087            if ((mnc != o.mnc) && requested->mnc) {
2088                return (mnc);
2089            }
2090        }
2091
2092        if (locale || o.locale) {
2093            if ((language[0] != o.language[0]) && requested->language[0]) {
2094                return (language[0]);
2095            }
2096
2097            if ((country[0] != o.country[0]) && requested->country[0]) {
2098                return (country[0]);
2099            }
2100        }
2101
2102        if (localeScript[0] || o.localeScript[0]) {
2103            if (localeScript[0] != o.localeScript[0] && requested->localeScript[0]) {
2104                return localeScript[0];
2105            }
2106        }
2107
2108        if (localeVariant[0] || o.localeVariant[0]) {
2109            if (localeVariant[0] != o.localeVariant[0] && requested->localeVariant[0]) {
2110                return localeVariant[0];
2111            }
2112        }
2113
2114        if (screenLayout || o.screenLayout) {
2115            if (((screenLayout^o.screenLayout) & MASK_LAYOUTDIR) != 0
2116                    && (requested->screenLayout & MASK_LAYOUTDIR)) {
2117                int myLayoutDir = screenLayout & MASK_LAYOUTDIR;
2118                int oLayoutDir = o.screenLayout & MASK_LAYOUTDIR;
2119                return (myLayoutDir > oLayoutDir);
2120            }
2121        }
2122
2123        if (smallestScreenWidthDp || o.smallestScreenWidthDp) {
2124            // The configuration closest to the actual size is best.
2125            // We assume that larger configs have already been filtered
2126            // out at this point.  That means we just want the largest one.
2127            if (smallestScreenWidthDp != o.smallestScreenWidthDp) {
2128                return smallestScreenWidthDp > o.smallestScreenWidthDp;
2129            }
2130        }
2131
2132        if (screenSizeDp || o.screenSizeDp) {
2133            // "Better" is based on the sum of the difference between both
2134            // width and height from the requested dimensions.  We are
2135            // assuming the invalid configs (with smaller dimens) have
2136            // already been filtered.  Note that if a particular dimension
2137            // is unspecified, we will end up with a large value (the
2138            // difference between 0 and the requested dimension), which is
2139            // good since we will prefer a config that has specified a
2140            // dimension value.
2141            int myDelta = 0, otherDelta = 0;
2142            if (requested->screenWidthDp) {
2143                myDelta += requested->screenWidthDp - screenWidthDp;
2144                otherDelta += requested->screenWidthDp - o.screenWidthDp;
2145            }
2146            if (requested->screenHeightDp) {
2147                myDelta += requested->screenHeightDp - screenHeightDp;
2148                otherDelta += requested->screenHeightDp - o.screenHeightDp;
2149            }
2150            //ALOGI("Comparing this %dx%d to other %dx%d in %dx%d: myDelta=%d otherDelta=%d",
2151            //    screenWidthDp, screenHeightDp, o.screenWidthDp, o.screenHeightDp,
2152            //    requested->screenWidthDp, requested->screenHeightDp, myDelta, otherDelta);
2153            if (myDelta != otherDelta) {
2154                return myDelta < otherDelta;
2155            }
2156        }
2157
2158        if (screenLayout || o.screenLayout) {
2159            if (((screenLayout^o.screenLayout) & MASK_SCREENSIZE) != 0
2160                    && (requested->screenLayout & MASK_SCREENSIZE)) {
2161                // A little backwards compatibility here: undefined is
2162                // considered equivalent to normal.  But only if the
2163                // requested size is at least normal; otherwise, small
2164                // is better than the default.
2165                int mySL = (screenLayout & MASK_SCREENSIZE);
2166                int oSL = (o.screenLayout & MASK_SCREENSIZE);
2167                int fixedMySL = mySL;
2168                int fixedOSL = oSL;
2169                if ((requested->screenLayout & MASK_SCREENSIZE) >= SCREENSIZE_NORMAL) {
2170                    if (fixedMySL == 0) fixedMySL = SCREENSIZE_NORMAL;
2171                    if (fixedOSL == 0) fixedOSL = SCREENSIZE_NORMAL;
2172                }
2173                // For screen size, the best match is the one that is
2174                // closest to the requested screen size, but not over
2175                // (the not over part is dealt with in match() below).
2176                if (fixedMySL == fixedOSL) {
2177                    // If the two are the same, but 'this' is actually
2178                    // undefined, then the other is really a better match.
2179                    if (mySL == 0) return false;
2180                    return true;
2181                }
2182                if (fixedMySL != fixedOSL) {
2183                    return fixedMySL > fixedOSL;
2184                }
2185            }
2186            if (((screenLayout^o.screenLayout) & MASK_SCREENLONG) != 0
2187                    && (requested->screenLayout & MASK_SCREENLONG)) {
2188                return (screenLayout & MASK_SCREENLONG);
2189            }
2190        }
2191
2192        if ((orientation != o.orientation) && requested->orientation) {
2193            return (orientation);
2194        }
2195
2196        if (uiMode || o.uiMode) {
2197            if (((uiMode^o.uiMode) & MASK_UI_MODE_TYPE) != 0
2198                    && (requested->uiMode & MASK_UI_MODE_TYPE)) {
2199                return (uiMode & MASK_UI_MODE_TYPE);
2200            }
2201            if (((uiMode^o.uiMode) & MASK_UI_MODE_NIGHT) != 0
2202                    && (requested->uiMode & MASK_UI_MODE_NIGHT)) {
2203                return (uiMode & MASK_UI_MODE_NIGHT);
2204            }
2205        }
2206
2207        if (screenType || o.screenType) {
2208            if (density != o.density) {
2209                // Use the system default density (DENSITY_MEDIUM, 160dpi) if none specified.
2210                const int thisDensity = density ? density : int(ResTable_config::DENSITY_MEDIUM);
2211                const int otherDensity = o.density ? o.density : int(ResTable_config::DENSITY_MEDIUM);
2212
2213                // We always prefer DENSITY_ANY over scaling a density bucket.
2214                if (thisDensity == ResTable_config::DENSITY_ANY) {
2215                    return true;
2216                } else if (otherDensity == ResTable_config::DENSITY_ANY) {
2217                    return false;
2218                }
2219
2220                int requestedDensity = requested->density;
2221                if (requested->density == 0 ||
2222                        requested->density == ResTable_config::DENSITY_ANY) {
2223                    requestedDensity = ResTable_config::DENSITY_MEDIUM;
2224                }
2225
2226                // DENSITY_ANY is now dealt with. We should look to
2227                // pick a density bucket and potentially scale it.
2228                // Any density is potentially useful
2229                // because the system will scale it.  Scaling down
2230                // is generally better than scaling up.
2231                int h = thisDensity;
2232                int l = otherDensity;
2233                bool bImBigger = true;
2234                if (l > h) {
2235                    int t = h;
2236                    h = l;
2237                    l = t;
2238                    bImBigger = false;
2239                }
2240
2241                if (requestedDensity >= h) {
2242                    // requested value higher than both l and h, give h
2243                    return bImBigger;
2244                }
2245                if (l >= requestedDensity) {
2246                    // requested value lower than both l and h, give l
2247                    return !bImBigger;
2248                }
2249                // saying that scaling down is 2x better than up
2250                if (((2 * l) - requestedDensity) * h > requestedDensity * requestedDensity) {
2251                    return !bImBigger;
2252                } else {
2253                    return bImBigger;
2254                }
2255            }
2256
2257            if ((touchscreen != o.touchscreen) && requested->touchscreen) {
2258                return (touchscreen);
2259            }
2260        }
2261
2262        if (input || o.input) {
2263            const int keysHidden = inputFlags & MASK_KEYSHIDDEN;
2264            const int oKeysHidden = o.inputFlags & MASK_KEYSHIDDEN;
2265            if (keysHidden != oKeysHidden) {
2266                const int reqKeysHidden =
2267                        requested->inputFlags & MASK_KEYSHIDDEN;
2268                if (reqKeysHidden) {
2269
2270                    if (!keysHidden) return false;
2271                    if (!oKeysHidden) return true;
2272                    // For compatibility, we count KEYSHIDDEN_NO as being
2273                    // the same as KEYSHIDDEN_SOFT.  Here we disambiguate
2274                    // these by making an exact match more specific.
2275                    if (reqKeysHidden == keysHidden) return true;
2276                    if (reqKeysHidden == oKeysHidden) return false;
2277                }
2278            }
2279
2280            const int navHidden = inputFlags & MASK_NAVHIDDEN;
2281            const int oNavHidden = o.inputFlags & MASK_NAVHIDDEN;
2282            if (navHidden != oNavHidden) {
2283                const int reqNavHidden =
2284                        requested->inputFlags & MASK_NAVHIDDEN;
2285                if (reqNavHidden) {
2286
2287                    if (!navHidden) return false;
2288                    if (!oNavHidden) return true;
2289                }
2290            }
2291
2292            if ((keyboard != o.keyboard) && requested->keyboard) {
2293                return (keyboard);
2294            }
2295
2296            if ((navigation != o.navigation) && requested->navigation) {
2297                return (navigation);
2298            }
2299        }
2300
2301        if (screenSize || o.screenSize) {
2302            // "Better" is based on the sum of the difference between both
2303            // width and height from the requested dimensions.  We are
2304            // assuming the invalid configs (with smaller sizes) have
2305            // already been filtered.  Note that if a particular dimension
2306            // is unspecified, we will end up with a large value (the
2307            // difference between 0 and the requested dimension), which is
2308            // good since we will prefer a config that has specified a
2309            // size value.
2310            int myDelta = 0, otherDelta = 0;
2311            if (requested->screenWidth) {
2312                myDelta += requested->screenWidth - screenWidth;
2313                otherDelta += requested->screenWidth - o.screenWidth;
2314            }
2315            if (requested->screenHeight) {
2316                myDelta += requested->screenHeight - screenHeight;
2317                otherDelta += requested->screenHeight - o.screenHeight;
2318            }
2319            if (myDelta != otherDelta) {
2320                return myDelta < otherDelta;
2321            }
2322        }
2323
2324        if (version || o.version) {
2325            if ((sdkVersion != o.sdkVersion) && requested->sdkVersion) {
2326                return (sdkVersion > o.sdkVersion);
2327            }
2328
2329            if ((minorVersion != o.minorVersion) &&
2330                    requested->minorVersion) {
2331                return (minorVersion);
2332            }
2333        }
2334
2335        return false;
2336    }
2337    return isMoreSpecificThan(o);
2338}
2339
2340bool ResTable_config::match(const ResTable_config& settings) const {
2341    if (imsi != 0) {
2342        if (mcc != 0 && mcc != settings.mcc) {
2343            return false;
2344        }
2345        if (mnc != 0 && mnc != settings.mnc) {
2346            return false;
2347        }
2348    }
2349    if (locale != 0) {
2350        // Don't consider the script & variants when deciding matches.
2351        //
2352        // If we two configs differ only in their script or language, they
2353        // can be weeded out in the isMoreSpecificThan test.
2354        if (language[0] != 0
2355            && (language[0] != settings.language[0]
2356                || language[1] != settings.language[1])) {
2357            return false;
2358        }
2359
2360        if (country[0] != 0
2361            && (country[0] != settings.country[0]
2362                || country[1] != settings.country[1])) {
2363            return false;
2364        }
2365    }
2366
2367    if (screenConfig != 0) {
2368        const int layoutDir = screenLayout&MASK_LAYOUTDIR;
2369        const int setLayoutDir = settings.screenLayout&MASK_LAYOUTDIR;
2370        if (layoutDir != 0 && layoutDir != setLayoutDir) {
2371            return false;
2372        }
2373
2374        const int screenSize = screenLayout&MASK_SCREENSIZE;
2375        const int setScreenSize = settings.screenLayout&MASK_SCREENSIZE;
2376        // Any screen sizes for larger screens than the setting do not
2377        // match.
2378        if (screenSize != 0 && screenSize > setScreenSize) {
2379            return false;
2380        }
2381
2382        const int screenLong = screenLayout&MASK_SCREENLONG;
2383        const int setScreenLong = settings.screenLayout&MASK_SCREENLONG;
2384        if (screenLong != 0 && screenLong != setScreenLong) {
2385            return false;
2386        }
2387
2388        const int uiModeType = uiMode&MASK_UI_MODE_TYPE;
2389        const int setUiModeType = settings.uiMode&MASK_UI_MODE_TYPE;
2390        if (uiModeType != 0 && uiModeType != setUiModeType) {
2391            return false;
2392        }
2393
2394        const int uiModeNight = uiMode&MASK_UI_MODE_NIGHT;
2395        const int setUiModeNight = settings.uiMode&MASK_UI_MODE_NIGHT;
2396        if (uiModeNight != 0 && uiModeNight != setUiModeNight) {
2397            return false;
2398        }
2399
2400        if (smallestScreenWidthDp != 0
2401                && smallestScreenWidthDp > settings.smallestScreenWidthDp) {
2402            return false;
2403        }
2404    }
2405    if (screenSizeDp != 0) {
2406        if (screenWidthDp != 0 && screenWidthDp > settings.screenWidthDp) {
2407            //ALOGI("Filtering out width %d in requested %d", screenWidthDp, settings.screenWidthDp);
2408            return false;
2409        }
2410        if (screenHeightDp != 0 && screenHeightDp > settings.screenHeightDp) {
2411            //ALOGI("Filtering out height %d in requested %d", screenHeightDp, settings.screenHeightDp);
2412            return false;
2413        }
2414    }
2415    if (screenType != 0) {
2416        if (orientation != 0 && orientation != settings.orientation) {
2417            return false;
2418        }
2419        // density always matches - we can scale it.  See isBetterThan
2420        if (touchscreen != 0 && touchscreen != settings.touchscreen) {
2421            return false;
2422        }
2423    }
2424    if (input != 0) {
2425        const int keysHidden = inputFlags&MASK_KEYSHIDDEN;
2426        const int setKeysHidden = settings.inputFlags&MASK_KEYSHIDDEN;
2427        if (keysHidden != 0 && keysHidden != setKeysHidden) {
2428            // For compatibility, we count a request for KEYSHIDDEN_NO as also
2429            // matching the more recent KEYSHIDDEN_SOFT.  Basically
2430            // KEYSHIDDEN_NO means there is some kind of keyboard available.
2431            //ALOGI("Matching keysHidden: have=%d, config=%d\n", keysHidden, setKeysHidden);
2432            if (keysHidden != KEYSHIDDEN_NO || setKeysHidden != KEYSHIDDEN_SOFT) {
2433                //ALOGI("No match!");
2434                return false;
2435            }
2436        }
2437        const int navHidden = inputFlags&MASK_NAVHIDDEN;
2438        const int setNavHidden = settings.inputFlags&MASK_NAVHIDDEN;
2439        if (navHidden != 0 && navHidden != setNavHidden) {
2440            return false;
2441        }
2442        if (keyboard != 0 && keyboard != settings.keyboard) {
2443            return false;
2444        }
2445        if (navigation != 0 && navigation != settings.navigation) {
2446            return false;
2447        }
2448    }
2449    if (screenSize != 0) {
2450        if (screenWidth != 0 && screenWidth > settings.screenWidth) {
2451            return false;
2452        }
2453        if (screenHeight != 0 && screenHeight > settings.screenHeight) {
2454            return false;
2455        }
2456    }
2457    if (version != 0) {
2458        if (sdkVersion != 0 && sdkVersion > settings.sdkVersion) {
2459            return false;
2460        }
2461        if (minorVersion != 0 && minorVersion != settings.minorVersion) {
2462            return false;
2463        }
2464    }
2465    return true;
2466}
2467
2468void ResTable_config::getBcp47Locale(char str[RESTABLE_MAX_LOCALE_LEN]) const {
2469    memset(str, 0, RESTABLE_MAX_LOCALE_LEN);
2470
2471    // This represents the "any" locale value, which has traditionally been
2472    // represented by the empty string.
2473    if (!language[0] && !country[0]) {
2474        return;
2475    }
2476
2477    size_t charsWritten = 0;
2478    if (language[0]) {
2479        charsWritten += unpackLanguage(str);
2480    }
2481
2482    if (localeScript[0]) {
2483        if (charsWritten) {
2484            str[charsWritten++] = '-';
2485        }
2486        memcpy(str + charsWritten, localeScript, sizeof(localeScript));
2487        charsWritten += sizeof(localeScript);
2488    }
2489
2490    if (country[0]) {
2491        if (charsWritten) {
2492            str[charsWritten++] = '-';
2493        }
2494        charsWritten += unpackRegion(str + charsWritten);
2495    }
2496
2497    if (localeVariant[0]) {
2498        if (charsWritten) {
2499            str[charsWritten++] = '-';
2500        }
2501        memcpy(str + charsWritten, localeVariant, sizeof(localeVariant));
2502    }
2503}
2504
2505/* static */ inline bool assignLocaleComponent(ResTable_config* config,
2506        const char* start, size_t size) {
2507
2508  switch (size) {
2509       case 0:
2510           return false;
2511       case 2:
2512       case 3:
2513           config->language[0] ? config->packRegion(start) : config->packLanguage(start);
2514           break;
2515       case 4:
2516           config->localeScript[0] = toupper(start[0]);
2517           for (size_t i = 1; i < 4; ++i) {
2518               config->localeScript[i] = tolower(start[i]);
2519           }
2520           break;
2521       case 5:
2522       case 6:
2523       case 7:
2524       case 8:
2525           for (size_t i = 0; i < size; ++i) {
2526               config->localeVariant[i] = tolower(start[i]);
2527           }
2528           break;
2529       default:
2530           return false;
2531  }
2532
2533  return true;
2534}
2535
2536void ResTable_config::setBcp47Locale(const char* in) {
2537    locale = 0;
2538    memset(localeScript, 0, sizeof(localeScript));
2539    memset(localeVariant, 0, sizeof(localeVariant));
2540
2541    const char* separator = in;
2542    const char* start = in;
2543    while ((separator = strchr(start, '-')) != NULL) {
2544        const size_t size = separator - start;
2545        if (!assignLocaleComponent(this, start, size)) {
2546            fprintf(stderr, "Invalid BCP-47 locale string: %s", in);
2547        }
2548
2549        start = (separator + 1);
2550    }
2551
2552    const size_t size = in + strlen(in) - start;
2553    assignLocaleComponent(this, start, size);
2554}
2555
2556String8 ResTable_config::toString() const {
2557    String8 res;
2558
2559    if (mcc != 0) {
2560        if (res.size() > 0) res.append("-");
2561        res.appendFormat("mcc%d", dtohs(mcc));
2562    }
2563    if (mnc != 0) {
2564        if (res.size() > 0) res.append("-");
2565        res.appendFormat("mnc%d", dtohs(mnc));
2566    }
2567
2568    char localeStr[RESTABLE_MAX_LOCALE_LEN];
2569    getBcp47Locale(localeStr);
2570    if (strlen(localeStr) > 0) {
2571        if (res.size() > 0) res.append("-");
2572        res.append(localeStr);
2573    }
2574
2575    if ((screenLayout&MASK_LAYOUTDIR) != 0) {
2576        if (res.size() > 0) res.append("-");
2577        switch (screenLayout&ResTable_config::MASK_LAYOUTDIR) {
2578            case ResTable_config::LAYOUTDIR_LTR:
2579                res.append("ldltr");
2580                break;
2581            case ResTable_config::LAYOUTDIR_RTL:
2582                res.append("ldrtl");
2583                break;
2584            default:
2585                res.appendFormat("layoutDir=%d",
2586                        dtohs(screenLayout&ResTable_config::MASK_LAYOUTDIR));
2587                break;
2588        }
2589    }
2590    if (smallestScreenWidthDp != 0) {
2591        if (res.size() > 0) res.append("-");
2592        res.appendFormat("sw%ddp", dtohs(smallestScreenWidthDp));
2593    }
2594    if (screenWidthDp != 0) {
2595        if (res.size() > 0) res.append("-");
2596        res.appendFormat("w%ddp", dtohs(screenWidthDp));
2597    }
2598    if (screenHeightDp != 0) {
2599        if (res.size() > 0) res.append("-");
2600        res.appendFormat("h%ddp", dtohs(screenHeightDp));
2601    }
2602    if ((screenLayout&MASK_SCREENSIZE) != SCREENSIZE_ANY) {
2603        if (res.size() > 0) res.append("-");
2604        switch (screenLayout&ResTable_config::MASK_SCREENSIZE) {
2605            case ResTable_config::SCREENSIZE_SMALL:
2606                res.append("small");
2607                break;
2608            case ResTable_config::SCREENSIZE_NORMAL:
2609                res.append("normal");
2610                break;
2611            case ResTable_config::SCREENSIZE_LARGE:
2612                res.append("large");
2613                break;
2614            case ResTable_config::SCREENSIZE_XLARGE:
2615                res.append("xlarge");
2616                break;
2617            default:
2618                res.appendFormat("screenLayoutSize=%d",
2619                        dtohs(screenLayout&ResTable_config::MASK_SCREENSIZE));
2620                break;
2621        }
2622    }
2623    if ((screenLayout&MASK_SCREENLONG) != 0) {
2624        if (res.size() > 0) res.append("-");
2625        switch (screenLayout&ResTable_config::MASK_SCREENLONG) {
2626            case ResTable_config::SCREENLONG_NO:
2627                res.append("notlong");
2628                break;
2629            case ResTable_config::SCREENLONG_YES:
2630                res.append("long");
2631                break;
2632            default:
2633                res.appendFormat("screenLayoutLong=%d",
2634                        dtohs(screenLayout&ResTable_config::MASK_SCREENLONG));
2635                break;
2636        }
2637    }
2638    if (orientation != ORIENTATION_ANY) {
2639        if (res.size() > 0) res.append("-");
2640        switch (orientation) {
2641            case ResTable_config::ORIENTATION_PORT:
2642                res.append("port");
2643                break;
2644            case ResTable_config::ORIENTATION_LAND:
2645                res.append("land");
2646                break;
2647            case ResTable_config::ORIENTATION_SQUARE:
2648                res.append("square");
2649                break;
2650            default:
2651                res.appendFormat("orientation=%d", dtohs(orientation));
2652                break;
2653        }
2654    }
2655    if ((uiMode&MASK_UI_MODE_TYPE) != UI_MODE_TYPE_ANY) {
2656        if (res.size() > 0) res.append("-");
2657        switch (uiMode&ResTable_config::MASK_UI_MODE_TYPE) {
2658            case ResTable_config::UI_MODE_TYPE_DESK:
2659                res.append("desk");
2660                break;
2661            case ResTable_config::UI_MODE_TYPE_CAR:
2662                res.append("car");
2663                break;
2664            case ResTable_config::UI_MODE_TYPE_TELEVISION:
2665                res.append("television");
2666                break;
2667            case ResTable_config::UI_MODE_TYPE_APPLIANCE:
2668                res.append("appliance");
2669                break;
2670            case ResTable_config::UI_MODE_TYPE_WATCH:
2671                res.append("watch");
2672                break;
2673            default:
2674                res.appendFormat("uiModeType=%d",
2675                        dtohs(screenLayout&ResTable_config::MASK_UI_MODE_TYPE));
2676                break;
2677        }
2678    }
2679    if ((uiMode&MASK_UI_MODE_NIGHT) != 0) {
2680        if (res.size() > 0) res.append("-");
2681        switch (uiMode&ResTable_config::MASK_UI_MODE_NIGHT) {
2682            case ResTable_config::UI_MODE_NIGHT_NO:
2683                res.append("notnight");
2684                break;
2685            case ResTable_config::UI_MODE_NIGHT_YES:
2686                res.append("night");
2687                break;
2688            default:
2689                res.appendFormat("uiModeNight=%d",
2690                        dtohs(uiMode&MASK_UI_MODE_NIGHT));
2691                break;
2692        }
2693    }
2694    if (density != DENSITY_DEFAULT) {
2695        if (res.size() > 0) res.append("-");
2696        switch (density) {
2697            case ResTable_config::DENSITY_LOW:
2698                res.append("ldpi");
2699                break;
2700            case ResTable_config::DENSITY_MEDIUM:
2701                res.append("mdpi");
2702                break;
2703            case ResTable_config::DENSITY_TV:
2704                res.append("tvdpi");
2705                break;
2706            case ResTable_config::DENSITY_HIGH:
2707                res.append("hdpi");
2708                break;
2709            case ResTable_config::DENSITY_XHIGH:
2710                res.append("xhdpi");
2711                break;
2712            case ResTable_config::DENSITY_XXHIGH:
2713                res.append("xxhdpi");
2714                break;
2715            case ResTable_config::DENSITY_XXXHIGH:
2716                res.append("xxxhdpi");
2717                break;
2718            case ResTable_config::DENSITY_NONE:
2719                res.append("nodpi");
2720                break;
2721            case ResTable_config::DENSITY_ANY:
2722                res.append("anydpi");
2723                break;
2724            default:
2725                res.appendFormat("%ddpi", dtohs(density));
2726                break;
2727        }
2728    }
2729    if (touchscreen != TOUCHSCREEN_ANY) {
2730        if (res.size() > 0) res.append("-");
2731        switch (touchscreen) {
2732            case ResTable_config::TOUCHSCREEN_NOTOUCH:
2733                res.append("notouch");
2734                break;
2735            case ResTable_config::TOUCHSCREEN_FINGER:
2736                res.append("finger");
2737                break;
2738            case ResTable_config::TOUCHSCREEN_STYLUS:
2739                res.append("stylus");
2740                break;
2741            default:
2742                res.appendFormat("touchscreen=%d", dtohs(touchscreen));
2743                break;
2744        }
2745    }
2746    if ((inputFlags&MASK_KEYSHIDDEN) != 0) {
2747        if (res.size() > 0) res.append("-");
2748        switch (inputFlags&MASK_KEYSHIDDEN) {
2749            case ResTable_config::KEYSHIDDEN_NO:
2750                res.append("keysexposed");
2751                break;
2752            case ResTable_config::KEYSHIDDEN_YES:
2753                res.append("keyshidden");
2754                break;
2755            case ResTable_config::KEYSHIDDEN_SOFT:
2756                res.append("keyssoft");
2757                break;
2758        }
2759    }
2760    if (keyboard != KEYBOARD_ANY) {
2761        if (res.size() > 0) res.append("-");
2762        switch (keyboard) {
2763            case ResTable_config::KEYBOARD_NOKEYS:
2764                res.append("nokeys");
2765                break;
2766            case ResTable_config::KEYBOARD_QWERTY:
2767                res.append("qwerty");
2768                break;
2769            case ResTable_config::KEYBOARD_12KEY:
2770                res.append("12key");
2771                break;
2772            default:
2773                res.appendFormat("keyboard=%d", dtohs(keyboard));
2774                break;
2775        }
2776    }
2777    if ((inputFlags&MASK_NAVHIDDEN) != 0) {
2778        if (res.size() > 0) res.append("-");
2779        switch (inputFlags&MASK_NAVHIDDEN) {
2780            case ResTable_config::NAVHIDDEN_NO:
2781                res.append("navexposed");
2782                break;
2783            case ResTable_config::NAVHIDDEN_YES:
2784                res.append("navhidden");
2785                break;
2786            default:
2787                res.appendFormat("inputFlagsNavHidden=%d",
2788                        dtohs(inputFlags&MASK_NAVHIDDEN));
2789                break;
2790        }
2791    }
2792    if (navigation != NAVIGATION_ANY) {
2793        if (res.size() > 0) res.append("-");
2794        switch (navigation) {
2795            case ResTable_config::NAVIGATION_NONAV:
2796                res.append("nonav");
2797                break;
2798            case ResTable_config::NAVIGATION_DPAD:
2799                res.append("dpad");
2800                break;
2801            case ResTable_config::NAVIGATION_TRACKBALL:
2802                res.append("trackball");
2803                break;
2804            case ResTable_config::NAVIGATION_WHEEL:
2805                res.append("wheel");
2806                break;
2807            default:
2808                res.appendFormat("navigation=%d", dtohs(navigation));
2809                break;
2810        }
2811    }
2812    if (screenSize != 0) {
2813        if (res.size() > 0) res.append("-");
2814        res.appendFormat("%dx%d", dtohs(screenWidth), dtohs(screenHeight));
2815    }
2816    if (version != 0) {
2817        if (res.size() > 0) res.append("-");
2818        res.appendFormat("v%d", dtohs(sdkVersion));
2819        if (minorVersion != 0) {
2820            res.appendFormat(".%d", dtohs(minorVersion));
2821        }
2822    }
2823
2824    return res;
2825}
2826
2827// --------------------------------------------------------------------
2828// --------------------------------------------------------------------
2829// --------------------------------------------------------------------
2830
2831struct ResTable::Header
2832{
2833    Header(ResTable* _owner) : owner(_owner), ownedData(NULL), header(NULL),
2834        resourceIDMap(NULL), resourceIDMapSize(0) { }
2835
2836    ~Header()
2837    {
2838        free(resourceIDMap);
2839    }
2840
2841    const ResTable* const           owner;
2842    void*                           ownedData;
2843    const ResTable_header*          header;
2844    size_t                          size;
2845    const uint8_t*                  dataEnd;
2846    size_t                          index;
2847    int32_t                         cookie;
2848
2849    ResStringPool                   values;
2850    uint32_t*                       resourceIDMap;
2851    size_t                          resourceIDMapSize;
2852};
2853
2854struct ResTable::Entry {
2855    ResTable_config config;
2856    const ResTable_entry* entry;
2857    const ResTable_type* type;
2858    uint32_t specFlags;
2859    const Package* package;
2860
2861    StringPoolRef typeStr;
2862    StringPoolRef keyStr;
2863};
2864
2865struct ResTable::Type
2866{
2867    Type(const Header* _header, const Package* _package, size_t count)
2868        : header(_header), package(_package), entryCount(count),
2869          typeSpec(NULL), typeSpecFlags(NULL) { }
2870    const Header* const             header;
2871    const Package* const            package;
2872    const size_t                    entryCount;
2873    const ResTable_typeSpec*        typeSpec;
2874    const uint32_t*                 typeSpecFlags;
2875    IdmapEntries                    idmapEntries;
2876    Vector<const ResTable_type*>    configs;
2877};
2878
2879struct ResTable::Package
2880{
2881    Package(ResTable* _owner, const Header* _header, const ResTable_package* _package)
2882        : owner(_owner), header(_header), package(_package), typeIdOffset(0) {
2883        if (dtohs(package->header.headerSize) == sizeof(package)) {
2884            // The package structure is the same size as the definition.
2885            // This means it contains the typeIdOffset field.
2886            typeIdOffset = package->typeIdOffset;
2887        }
2888    }
2889
2890    const ResTable* const           owner;
2891    const Header* const             header;
2892    const ResTable_package* const   package;
2893
2894    ResStringPool                   typeStrings;
2895    ResStringPool                   keyStrings;
2896
2897    size_t                          typeIdOffset;
2898};
2899
2900// A group of objects describing a particular resource package.
2901// The first in 'package' is always the root object (from the resource
2902// table that defined the package); the ones after are skins on top of it.
2903struct ResTable::PackageGroup
2904{
2905    PackageGroup(ResTable* _owner, const String16& _name, uint32_t _id)
2906        : owner(_owner)
2907        , name(_name)
2908        , id(_id)
2909        , largestTypeId(0)
2910        , bags(NULL)
2911        , dynamicRefTable(static_cast<uint8_t>(_id))
2912    { }
2913
2914    ~PackageGroup() {
2915        clearBagCache();
2916        const size_t numTypes = types.size();
2917        for (size_t i = 0; i < numTypes; i++) {
2918            const TypeList& typeList = types[i];
2919            const size_t numInnerTypes = typeList.size();
2920            for (size_t j = 0; j < numInnerTypes; j++) {
2921                if (typeList[j]->package->owner == owner) {
2922                    delete typeList[j];
2923                }
2924            }
2925        }
2926
2927        const size_t N = packages.size();
2928        for (size_t i=0; i<N; i++) {
2929            Package* pkg = packages[i];
2930            if (pkg->owner == owner) {
2931                delete pkg;
2932            }
2933        }
2934    }
2935
2936    void clearBagCache() {
2937        if (bags) {
2938            TABLE_NOISY(printf("bags=%p\n", bags));
2939            for (size_t i = 0; i < bags->size(); i++) {
2940                TABLE_NOISY(printf("type=%d\n", i));
2941                const TypeList& typeList = types[i];
2942                if (!typeList.isEmpty()) {
2943                    bag_set** typeBags = bags->get(i);
2944                    TABLE_NOISY(printf("typeBags=%p\n", typeBags));
2945                    if (typeBags) {
2946                        const size_t N = typeList[0]->entryCount;
2947                        TABLE_NOISY(printf("type->entryCount=%x\n", N));
2948                        for (size_t j=0; j<N; j++) {
2949                            if (typeBags[j] && typeBags[j] != (bag_set*)0xFFFFFFFF)
2950                                free(typeBags[j]);
2951                        }
2952                        free(typeBags);
2953                    }
2954                }
2955            }
2956            delete bags;
2957            bags = NULL;
2958        }
2959    }
2960
2961    ssize_t findType16(const char16_t* type, size_t len) const {
2962        const size_t N = packages.size();
2963        for (size_t i = 0; i < N; i++) {
2964            ssize_t index = packages[i]->typeStrings.indexOfString(type, len);
2965            if (index >= 0) {
2966                return index + packages[i]->typeIdOffset;
2967            }
2968        }
2969        return -1;
2970    }
2971
2972    const ResTable* const           owner;
2973    String16 const                  name;
2974    uint32_t const                  id;
2975
2976    // This is mainly used to keep track of the loaded packages
2977    // and to clean them up properly. Accessing resources happens from
2978    // the 'types' array.
2979    Vector<Package*>                packages;
2980
2981    ByteBucketArray<TypeList>       types;
2982
2983    uint8_t                         largestTypeId;
2984
2985    // Computed attribute bags, first indexed by the type and second
2986    // by the entry in that type.
2987    ByteBucketArray<bag_set**>*     bags;
2988
2989    // The table mapping dynamic references to resolved references for
2990    // this package group.
2991    // TODO: We may be able to support dynamic references in overlays
2992    // by having these tables in a per-package scope rather than
2993    // per-package-group.
2994    DynamicRefTable                 dynamicRefTable;
2995};
2996
2997struct ResTable::bag_set
2998{
2999    size_t numAttrs;    // number in array
3000    size_t availAttrs;  // total space in array
3001    uint32_t typeSpecFlags;
3002    // Followed by 'numAttr' bag_entry structures.
3003};
3004
3005ResTable::Theme::Theme(const ResTable& table)
3006    : mTable(table)
3007{
3008    memset(mPackages, 0, sizeof(mPackages));
3009}
3010
3011ResTable::Theme::~Theme()
3012{
3013    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3014        package_info* pi = mPackages[i];
3015        if (pi != NULL) {
3016            free_package(pi);
3017        }
3018    }
3019}
3020
3021void ResTable::Theme::free_package(package_info* pi)
3022{
3023    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3024        theme_entry* te = pi->types[j].entries;
3025        if (te != NULL) {
3026            free(te);
3027        }
3028    }
3029    free(pi);
3030}
3031
3032ResTable::Theme::package_info* ResTable::Theme::copy_package(package_info* pi)
3033{
3034    package_info* newpi = (package_info*)malloc(sizeof(package_info));
3035    for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3036        size_t cnt = pi->types[j].numEntries;
3037        newpi->types[j].numEntries = cnt;
3038        theme_entry* te = pi->types[j].entries;
3039        if (te != NULL) {
3040            theme_entry* newte = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3041            newpi->types[j].entries = newte;
3042            memcpy(newte, te, cnt*sizeof(theme_entry));
3043        } else {
3044            newpi->types[j].entries = NULL;
3045        }
3046    }
3047    return newpi;
3048}
3049
3050status_t ResTable::Theme::applyStyle(uint32_t resID, bool force)
3051{
3052    const bag_entry* bag;
3053    uint32_t bagTypeSpecFlags = 0;
3054    mTable.lock();
3055    const ssize_t N = mTable.getBagLocked(resID, &bag, &bagTypeSpecFlags);
3056    TABLE_NOISY(ALOGV("Applying style 0x%08x to theme %p, count=%d", resID, this, N));
3057    if (N < 0) {
3058        mTable.unlock();
3059        return N;
3060    }
3061
3062    uint32_t curPackage = 0xffffffff;
3063    ssize_t curPackageIndex = 0;
3064    package_info* curPI = NULL;
3065    uint32_t curType = 0xffffffff;
3066    size_t numEntries = 0;
3067    theme_entry* curEntries = NULL;
3068
3069    const bag_entry* end = bag + N;
3070    while (bag < end) {
3071        const uint32_t attrRes = bag->map.name.ident;
3072        const uint32_t p = Res_GETPACKAGE(attrRes);
3073        const uint32_t t = Res_GETTYPE(attrRes);
3074        const uint32_t e = Res_GETENTRY(attrRes);
3075
3076        if (curPackage != p) {
3077            const ssize_t pidx = mTable.getResourcePackageIndex(attrRes);
3078            if (pidx < 0) {
3079                ALOGE("Style contains key with bad package: 0x%08x\n", attrRes);
3080                bag++;
3081                continue;
3082            }
3083            curPackage = p;
3084            curPackageIndex = pidx;
3085            curPI = mPackages[pidx];
3086            if (curPI == NULL) {
3087                PackageGroup* const grp = mTable.mPackageGroups[pidx];
3088                curPI = (package_info*)malloc(sizeof(package_info));
3089                memset(curPI, 0, sizeof(*curPI));
3090                mPackages[pidx] = curPI;
3091            }
3092            curType = 0xffffffff;
3093        }
3094        if (curType != t) {
3095            if (t > Res_MAXTYPE) {
3096                ALOGE("Style contains key with bad type: 0x%08x\n", attrRes);
3097                bag++;
3098                continue;
3099            }
3100            curType = t;
3101            curEntries = curPI->types[t].entries;
3102            if (curEntries == NULL) {
3103                PackageGroup* const grp = mTable.mPackageGroups[curPackageIndex];
3104                const TypeList& typeList = grp->types[t];
3105                int cnt = typeList.isEmpty() ? 0 : typeList[0]->entryCount;
3106                curEntries = (theme_entry*)malloc(cnt*sizeof(theme_entry));
3107                memset(curEntries, Res_value::TYPE_NULL, cnt*sizeof(theme_entry));
3108                curPI->types[t].numEntries = cnt;
3109                curPI->types[t].entries = curEntries;
3110            }
3111            numEntries = curPI->types[t].numEntries;
3112        }
3113        if (e >= numEntries) {
3114            ALOGE("Style contains key with bad entry: 0x%08x\n", attrRes);
3115            bag++;
3116            continue;
3117        }
3118        theme_entry* curEntry = curEntries + e;
3119        TABLE_NOISY(ALOGV("Attr 0x%08x: type=0x%x, data=0x%08x; curType=0x%x",
3120                attrRes, bag->map.value.dataType, bag->map.value.data,
3121                curEntry->value.dataType));
3122        if (force || curEntry->value.dataType == Res_value::TYPE_NULL) {
3123            curEntry->stringBlock = bag->stringBlock;
3124            curEntry->typeSpecFlags |= bagTypeSpecFlags;
3125            curEntry->value = bag->map.value;
3126        }
3127
3128        bag++;
3129    }
3130
3131    mTable.unlock();
3132
3133    //ALOGI("Applying style 0x%08x (force=%d)  theme %p...\n", resID, force, this);
3134    //dumpToLog();
3135
3136    return NO_ERROR;
3137}
3138
3139status_t ResTable::Theme::setTo(const Theme& other)
3140{
3141    //ALOGI("Setting theme %p from theme %p...\n", this, &other);
3142    //dumpToLog();
3143    //other.dumpToLog();
3144
3145    if (&mTable == &other.mTable) {
3146        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3147            if (mPackages[i] != NULL) {
3148                free_package(mPackages[i]);
3149            }
3150            if (other.mPackages[i] != NULL) {
3151                mPackages[i] = copy_package(other.mPackages[i]);
3152            } else {
3153                mPackages[i] = NULL;
3154            }
3155        }
3156    } else {
3157        // @todo: need to really implement this, not just copy
3158        // the system package (which is still wrong because it isn't
3159        // fixing up resource references).
3160        for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3161            if (mPackages[i] != NULL) {
3162                free_package(mPackages[i]);
3163            }
3164            if (i == 0 && other.mPackages[i] != NULL) {
3165                mPackages[i] = copy_package(other.mPackages[i]);
3166            } else {
3167                mPackages[i] = NULL;
3168            }
3169        }
3170    }
3171
3172    //ALOGI("Final theme:");
3173    //dumpToLog();
3174
3175    return NO_ERROR;
3176}
3177
3178ssize_t ResTable::Theme::getAttribute(uint32_t resID, Res_value* outValue,
3179        uint32_t* outTypeSpecFlags) const
3180{
3181    int cnt = 20;
3182
3183    if (outTypeSpecFlags != NULL) *outTypeSpecFlags = 0;
3184
3185    do {
3186        const ssize_t p = mTable.getResourcePackageIndex(resID);
3187        const uint32_t t = Res_GETTYPE(resID);
3188        const uint32_t e = Res_GETENTRY(resID);
3189
3190        TABLE_THEME(ALOGI("Looking up attr 0x%08x in theme %p", resID, this));
3191
3192        if (p >= 0) {
3193            const package_info* const pi = mPackages[p];
3194            TABLE_THEME(ALOGI("Found package: %p", pi));
3195            if (pi != NULL) {
3196                TABLE_THEME(ALOGI("Desired type index is %ld in avail %d", t, Res_MAXTYPE + 1));
3197                if (t <= Res_MAXTYPE) {
3198                    const type_info& ti = pi->types[t];
3199                    TABLE_THEME(ALOGI("Desired entry index is %ld in avail %d", e, ti.numEntries));
3200                    if (e < ti.numEntries) {
3201                        const theme_entry& te = ti.entries[e];
3202                        if (outTypeSpecFlags != NULL) {
3203                            *outTypeSpecFlags |= te.typeSpecFlags;
3204                        }
3205                        TABLE_THEME(ALOGI("Theme value: type=0x%x, data=0x%08x",
3206                                te.value.dataType, te.value.data));
3207                        const uint8_t type = te.value.dataType;
3208                        if (type == Res_value::TYPE_ATTRIBUTE) {
3209                            if (cnt > 0) {
3210                                cnt--;
3211                                resID = te.value.data;
3212                                continue;
3213                            }
3214                            ALOGW("Too many attribute references, stopped at: 0x%08x\n", resID);
3215                            return BAD_INDEX;
3216                        } else if (type != Res_value::TYPE_NULL) {
3217                            *outValue = te.value;
3218                            return te.stringBlock;
3219                        }
3220                        return BAD_INDEX;
3221                    }
3222                }
3223            }
3224        }
3225        break;
3226
3227    } while (true);
3228
3229    return BAD_INDEX;
3230}
3231
3232ssize_t ResTable::Theme::resolveAttributeReference(Res_value* inOutValue,
3233        ssize_t blockIndex, uint32_t* outLastRef,
3234        uint32_t* inoutTypeSpecFlags, ResTable_config* inoutConfig) const
3235{
3236    //printf("Resolving type=0x%x\n", inOutValue->dataType);
3237    if (inOutValue->dataType == Res_value::TYPE_ATTRIBUTE) {
3238        uint32_t newTypeSpecFlags;
3239        blockIndex = getAttribute(inOutValue->data, inOutValue, &newTypeSpecFlags);
3240        TABLE_THEME(ALOGI("Resolving attr reference: blockIndex=%d, type=0x%x, data=%p\n",
3241             (int)blockIndex, (int)inOutValue->dataType, (void*)inOutValue->data));
3242        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newTypeSpecFlags;
3243        //printf("Retrieved attribute new type=0x%x\n", inOutValue->dataType);
3244        if (blockIndex < 0) {
3245            return blockIndex;
3246        }
3247    }
3248    return mTable.resolveReference(inOutValue, blockIndex, outLastRef,
3249            inoutTypeSpecFlags, inoutConfig);
3250}
3251
3252void ResTable::Theme::dumpToLog() const
3253{
3254    ALOGI("Theme %p:\n", this);
3255    for (size_t i=0; i<Res_MAXPACKAGE; i++) {
3256        package_info* pi = mPackages[i];
3257        if (pi == NULL) continue;
3258
3259        ALOGI("  Package #0x%02x:\n", (int)(i + 1));
3260        for (size_t j = 0; j <= Res_MAXTYPE; j++) {
3261            type_info& ti = pi->types[j];
3262            if (ti.numEntries == 0) continue;
3263            ALOGI("    Type #0x%02x:\n", (int)(j + 1));
3264            for (size_t k = 0; k < ti.numEntries; k++) {
3265                const theme_entry& te = ti.entries[k];
3266                if (te.value.dataType == Res_value::TYPE_NULL) continue;
3267                ALOGI("      0x%08x: t=0x%x, d=0x%08x (block=%d)\n",
3268                     (int)Res_MAKEID(i, j, k),
3269                     te.value.dataType, (int)te.value.data, (int)te.stringBlock);
3270            }
3271        }
3272    }
3273}
3274
3275ResTable::ResTable()
3276    : mError(NO_INIT), mNextPackageId(2)
3277{
3278    memset(&mParams, 0, sizeof(mParams));
3279    memset(mPackageMap, 0, sizeof(mPackageMap));
3280    //ALOGI("Creating ResTable %p\n", this);
3281}
3282
3283ResTable::ResTable(const void* data, size_t size, const int32_t cookie, bool copyData)
3284    : mError(NO_INIT), mNextPackageId(2)
3285{
3286    memset(&mParams, 0, sizeof(mParams));
3287    memset(mPackageMap, 0, sizeof(mPackageMap));
3288    addInternal(data, size, NULL, 0, cookie, copyData);
3289    LOG_FATAL_IF(mError != NO_ERROR, "Error parsing resource table");
3290    //ALOGI("Creating ResTable %p\n", this);
3291}
3292
3293ResTable::~ResTable()
3294{
3295    //ALOGI("Destroying ResTable in %p\n", this);
3296    uninit();
3297}
3298
3299inline ssize_t ResTable::getResourcePackageIndex(uint32_t resID) const
3300{
3301    return ((ssize_t)mPackageMap[Res_GETPACKAGE(resID)+1])-1;
3302}
3303
3304status_t ResTable::add(const void* data, size_t size, const int32_t cookie, bool copyData) {
3305    return addInternal(data, size, NULL, 0, cookie, copyData);
3306}
3307
3308status_t ResTable::add(const void* data, size_t size, const void* idmapData, size_t idmapDataSize,
3309        const int32_t cookie, bool copyData) {
3310    return addInternal(data, size, idmapData, idmapDataSize, cookie, copyData);
3311}
3312
3313status_t ResTable::add(Asset* asset, const int32_t cookie, bool copyData) {
3314    const void* data = asset->getBuffer(true);
3315    if (data == NULL) {
3316        ALOGW("Unable to get buffer of resource asset file");
3317        return UNKNOWN_ERROR;
3318    }
3319
3320    return addInternal(data, static_cast<size_t>(asset->getLength()), NULL, 0, cookie, copyData);
3321}
3322
3323status_t ResTable::add(Asset* asset, Asset* idmapAsset, const int32_t cookie, bool copyData) {
3324    const void* data = asset->getBuffer(true);
3325    if (data == NULL) {
3326        ALOGW("Unable to get buffer of resource asset file");
3327        return UNKNOWN_ERROR;
3328    }
3329
3330    size_t idmapSize = 0;
3331    const void* idmapData = NULL;
3332    if (idmapAsset != NULL) {
3333        idmapData = idmapAsset->getBuffer(true);
3334        if (idmapData == NULL) {
3335            ALOGW("Unable to get buffer of idmap asset file");
3336            return UNKNOWN_ERROR;
3337        }
3338        idmapSize = static_cast<size_t>(idmapAsset->getLength());
3339    }
3340
3341    return addInternal(data, static_cast<size_t>(asset->getLength()),
3342            idmapData, idmapSize, cookie, copyData);
3343}
3344
3345status_t ResTable::add(ResTable* src)
3346{
3347    mError = src->mError;
3348
3349    for (size_t i=0; i<src->mHeaders.size(); i++) {
3350        mHeaders.add(src->mHeaders[i]);
3351    }
3352
3353    for (size_t i=0; i<src->mPackageGroups.size(); i++) {
3354        PackageGroup* srcPg = src->mPackageGroups[i];
3355        PackageGroup* pg = new PackageGroup(this, srcPg->name, srcPg->id);
3356        for (size_t j=0; j<srcPg->packages.size(); j++) {
3357            pg->packages.add(srcPg->packages[j]);
3358        }
3359
3360        for (size_t j = 0; j < srcPg->types.size(); j++) {
3361            if (srcPg->types[j].isEmpty()) {
3362                continue;
3363            }
3364
3365            TypeList& typeList = pg->types.editItemAt(j);
3366            typeList.appendVector(srcPg->types[j]);
3367        }
3368        pg->dynamicRefTable.addMappings(srcPg->dynamicRefTable);
3369        pg->largestTypeId = max(pg->largestTypeId, srcPg->largestTypeId);
3370        mPackageGroups.add(pg);
3371    }
3372
3373    memcpy(mPackageMap, src->mPackageMap, sizeof(mPackageMap));
3374
3375    return mError;
3376}
3377
3378status_t ResTable::addEmpty(const int32_t cookie) {
3379    Header* header = new Header(this);
3380    header->index = mHeaders.size();
3381    header->cookie = cookie;
3382    header->values.setToEmpty();
3383    header->ownedData = calloc(1, sizeof(ResTable_header));
3384
3385    ResTable_header* resHeader = (ResTable_header*) header->ownedData;
3386    resHeader->header.type = RES_TABLE_TYPE;
3387    resHeader->header.headerSize = sizeof(ResTable_header);
3388    resHeader->header.size = sizeof(ResTable_header);
3389
3390    header->header = (const ResTable_header*) resHeader;
3391    mHeaders.add(header);
3392    return (mError=NO_ERROR);
3393}
3394
3395status_t ResTable::addInternal(const void* data, size_t dataSize, const void* idmapData, size_t idmapDataSize,
3396        const int32_t cookie, bool copyData)
3397{
3398    if (!data) {
3399        return NO_ERROR;
3400    }
3401
3402    if (dataSize < sizeof(ResTable_header)) {
3403        ALOGE("Invalid data. Size(%d) is smaller than a ResTable_header(%d).",
3404                (int) dataSize, (int) sizeof(ResTable_header));
3405        return UNKNOWN_ERROR;
3406    }
3407
3408    Header* header = new Header(this);
3409    header->index = mHeaders.size();
3410    header->cookie = cookie;
3411    if (idmapData != NULL) {
3412        header->resourceIDMap = (uint32_t*) malloc(idmapDataSize);
3413        if (header->resourceIDMap == NULL) {
3414            delete header;
3415            return (mError = NO_MEMORY);
3416        }
3417        memcpy(header->resourceIDMap, idmapData, idmapDataSize);
3418        header->resourceIDMapSize = idmapDataSize;
3419    }
3420    mHeaders.add(header);
3421
3422    const bool notDeviceEndian = htods(0xf0) != 0xf0;
3423
3424    LOAD_TABLE_NOISY(
3425        ALOGV("Adding resources to ResTable: data=%p, size=0x%x, cookie=%d, copy=%d "
3426             "idmap=%p\n", data, dataSize, cookie, copyData, idmap));
3427
3428    if (copyData || notDeviceEndian) {
3429        header->ownedData = malloc(dataSize);
3430        if (header->ownedData == NULL) {
3431            return (mError=NO_MEMORY);
3432        }
3433        memcpy(header->ownedData, data, dataSize);
3434        data = header->ownedData;
3435    }
3436
3437    header->header = (const ResTable_header*)data;
3438    header->size = dtohl(header->header->header.size);
3439    //ALOGI("Got size 0x%x, again size 0x%x, raw size 0x%x\n", header->size,
3440    //     dtohl(header->header->header.size), header->header->header.size);
3441    LOAD_TABLE_NOISY(ALOGV("Loading ResTable @%p:\n", header->header));
3442    if (dtohs(header->header->header.headerSize) > header->size
3443            || header->size > dataSize) {
3444        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is larger than data size 0x%x\n",
3445             (int)dtohs(header->header->header.headerSize),
3446             (int)header->size, (int)dataSize);
3447        return (mError=BAD_TYPE);
3448    }
3449    if (((dtohs(header->header->header.headerSize)|header->size)&0x3) != 0) {
3450        ALOGW("Bad resource table: header size 0x%x or total size 0x%x is not on an integer boundary\n",
3451             (int)dtohs(header->header->header.headerSize),
3452             (int)header->size);
3453        return (mError=BAD_TYPE);
3454    }
3455    header->dataEnd = ((const uint8_t*)header->header) + header->size;
3456
3457    // Iterate through all chunks.
3458    size_t curPackage = 0;
3459
3460    const ResChunk_header* chunk =
3461        (const ResChunk_header*)(((const uint8_t*)header->header)
3462                                 + dtohs(header->header->header.headerSize));
3463    while (((const uint8_t*)chunk) <= (header->dataEnd-sizeof(ResChunk_header)) &&
3464           ((const uint8_t*)chunk) <= (header->dataEnd-dtohl(chunk->size))) {
3465        status_t err = validate_chunk(chunk, sizeof(ResChunk_header), header->dataEnd, "ResTable");
3466        if (err != NO_ERROR) {
3467            return (mError=err);
3468        }
3469        TABLE_NOISY(ALOGV("Chunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
3470                     dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
3471                     (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
3472        const size_t csize = dtohl(chunk->size);
3473        const uint16_t ctype = dtohs(chunk->type);
3474        if (ctype == RES_STRING_POOL_TYPE) {
3475            if (header->values.getError() != NO_ERROR) {
3476                // Only use the first string chunk; ignore any others that
3477                // may appear.
3478                status_t err = header->values.setTo(chunk, csize);
3479                if (err != NO_ERROR) {
3480                    return (mError=err);
3481                }
3482            } else {
3483                ALOGW("Multiple string chunks found in resource table.");
3484            }
3485        } else if (ctype == RES_TABLE_PACKAGE_TYPE) {
3486            if (curPackage >= dtohl(header->header->packageCount)) {
3487                ALOGW("More package chunks were found than the %d declared in the header.",
3488                     dtohl(header->header->packageCount));
3489                return (mError=BAD_TYPE);
3490            }
3491
3492            if (parsePackage((ResTable_package*)chunk, header) != NO_ERROR) {
3493                return mError;
3494            }
3495            curPackage++;
3496        } else {
3497            ALOGW("Unknown chunk type 0x%x in table at %p.\n",
3498                 ctype,
3499                 (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header)));
3500        }
3501        chunk = (const ResChunk_header*)
3502            (((const uint8_t*)chunk) + csize);
3503    }
3504
3505    if (curPackage < dtohl(header->header->packageCount)) {
3506        ALOGW("Fewer package chunks (%d) were found than the %d declared in the header.",
3507             (int)curPackage, dtohl(header->header->packageCount));
3508        return (mError=BAD_TYPE);
3509    }
3510    mError = header->values.getError();
3511    if (mError != NO_ERROR) {
3512        ALOGW("No string values found in resource table!");
3513    }
3514
3515    TABLE_NOISY(ALOGV("Returning from add with mError=%d\n", mError));
3516    return mError;
3517}
3518
3519status_t ResTable::getError() const
3520{
3521    return mError;
3522}
3523
3524void ResTable::uninit()
3525{
3526    mError = NO_INIT;
3527    size_t N = mPackageGroups.size();
3528    for (size_t i=0; i<N; i++) {
3529        PackageGroup* g = mPackageGroups[i];
3530        delete g;
3531    }
3532    N = mHeaders.size();
3533    for (size_t i=0; i<N; i++) {
3534        Header* header = mHeaders[i];
3535        if (header->owner == this) {
3536            if (header->ownedData) {
3537                free(header->ownedData);
3538            }
3539            delete header;
3540        }
3541    }
3542
3543    mPackageGroups.clear();
3544    mHeaders.clear();
3545}
3546
3547bool ResTable::getResourceName(uint32_t resID, bool allowUtf8, resource_name* outName) const
3548{
3549    if (mError != NO_ERROR) {
3550        return false;
3551    }
3552
3553    const ssize_t p = getResourcePackageIndex(resID);
3554    const int t = Res_GETTYPE(resID);
3555    const int e = Res_GETENTRY(resID);
3556
3557    if (p < 0) {
3558        if (Res_GETPACKAGE(resID)+1 == 0) {
3559            ALOGW("No package identifier when getting name for resource number 0x%08x", resID);
3560        } else {
3561            ALOGW("No known package when getting name for resource number 0x%08x", resID);
3562        }
3563        return false;
3564    }
3565    if (t < 0) {
3566        ALOGW("No type identifier when getting name for resource number 0x%08x", resID);
3567        return false;
3568    }
3569
3570    const PackageGroup* const grp = mPackageGroups[p];
3571    if (grp == NULL) {
3572        ALOGW("Bad identifier when getting name for resource number 0x%08x", resID);
3573        return false;
3574    }
3575
3576    Entry entry;
3577    status_t err = getEntry(grp, t, e, NULL, &entry);
3578    if (err != NO_ERROR) {
3579        return false;
3580    }
3581
3582    outName->package = grp->name.string();
3583    outName->packageLen = grp->name.size();
3584    if (allowUtf8) {
3585        outName->type8 = entry.typeStr.string8(&outName->typeLen);
3586        outName->name8 = entry.keyStr.string8(&outName->nameLen);
3587    } else {
3588        outName->type8 = NULL;
3589        outName->name8 = NULL;
3590    }
3591    if (outName->type8 == NULL) {
3592        outName->type = entry.typeStr.string16(&outName->typeLen);
3593        // If we have a bad index for some reason, we should abort.
3594        if (outName->type == NULL) {
3595            return false;
3596        }
3597    }
3598    if (outName->name8 == NULL) {
3599        outName->name = entry.keyStr.string16(&outName->nameLen);
3600        // If we have a bad index for some reason, we should abort.
3601        if (outName->name == NULL) {
3602            return false;
3603        }
3604    }
3605
3606    return true;
3607}
3608
3609ssize_t ResTable::getResource(uint32_t resID, Res_value* outValue, bool mayBeBag, uint16_t density,
3610        uint32_t* outSpecFlags, ResTable_config* outConfig) const
3611{
3612    if (mError != NO_ERROR) {
3613        return mError;
3614    }
3615
3616    const ssize_t p = getResourcePackageIndex(resID);
3617    const int t = Res_GETTYPE(resID);
3618    const int e = Res_GETENTRY(resID);
3619
3620    if (p < 0) {
3621        if (Res_GETPACKAGE(resID)+1 == 0) {
3622            ALOGW("No package identifier when getting value for resource number 0x%08x", resID);
3623        } else {
3624            ALOGW("No known package when getting value for resource number 0x%08x", resID);
3625        }
3626        return BAD_INDEX;
3627    }
3628    if (t < 0) {
3629        ALOGW("No type identifier when getting value for resource number 0x%08x", resID);
3630        return BAD_INDEX;
3631    }
3632
3633    const PackageGroup* const grp = mPackageGroups[p];
3634    if (grp == NULL) {
3635        ALOGW("Bad identifier when getting value for resource number 0x%08x", resID);
3636        return BAD_INDEX;
3637    }
3638
3639    // Allow overriding density
3640    ResTable_config desiredConfig = mParams;
3641    if (density > 0) {
3642        desiredConfig.density = density;
3643    }
3644
3645    Entry entry;
3646    status_t err = getEntry(grp, t, e, &desiredConfig, &entry);
3647    if (err != NO_ERROR) {
3648        ALOGW("Failure getting entry for 0x%08x (t=%d e=%d) (error %d)\n",
3649                resID, t, e, err);
3650        return err;
3651    }
3652
3653    if ((dtohs(entry.entry->flags) & ResTable_entry::FLAG_COMPLEX) != 0) {
3654        if (!mayBeBag) {
3655            ALOGW("Requesting resource 0x%08x failed because it is complex\n", resID);
3656        }
3657        return BAD_VALUE;
3658    }
3659
3660    const Res_value* value = reinterpret_cast<const Res_value*>(
3661            reinterpret_cast<const uint8_t*>(entry.entry) + entry.entry->size);
3662
3663    outValue->size = dtohs(value->size);
3664    outValue->res0 = value->res0;
3665    outValue->dataType = value->dataType;
3666    outValue->data = dtohl(value->data);
3667
3668    // The reference may be pointing to a resource in a shared library. These
3669    // references have build-time generated package IDs. These ids may not match
3670    // the actual package IDs of the corresponding packages in this ResTable.
3671    // We need to fix the package ID based on a mapping.
3672    if (grp->dynamicRefTable.lookupResourceValue(outValue) != NO_ERROR) {
3673        ALOGW("Failed to resolve referenced package: 0x%08x", outValue->data);
3674        return BAD_VALUE;
3675    }
3676
3677    TABLE_NOISY(size_t len;
3678          printf("Found value: pkg=%d, type=%d, str=%s, int=%d\n",
3679                 entry.package->header->index,
3680                 outValue->dataType,
3681                 outValue->dataType == Res_value::TYPE_STRING
3682                 ? String8(entry.package->header->values.stringAt(
3683                     outValue->data, &len)).string()
3684                 : "",
3685                 outValue->data));
3686
3687    if (outSpecFlags != NULL) {
3688        *outSpecFlags = entry.specFlags;
3689    }
3690
3691    if (outConfig != NULL) {
3692        *outConfig = entry.config;
3693    }
3694
3695    return entry.package->header->index;
3696}
3697
3698ssize_t ResTable::resolveReference(Res_value* value, ssize_t blockIndex,
3699        uint32_t* outLastRef, uint32_t* inoutTypeSpecFlags,
3700        ResTable_config* outConfig) const
3701{
3702    int count=0;
3703    while (blockIndex >= 0 && value->dataType == Res_value::TYPE_REFERENCE
3704            && value->data != 0 && count < 20) {
3705        if (outLastRef) *outLastRef = value->data;
3706        uint32_t lastRef = value->data;
3707        uint32_t newFlags = 0;
3708        const ssize_t newIndex = getResource(value->data, value, true, 0, &newFlags,
3709                outConfig);
3710        if (newIndex == BAD_INDEX) {
3711            return BAD_INDEX;
3712        }
3713        TABLE_THEME(ALOGI("Resolving reference %p: newIndex=%d, type=0x%x, data=%p\n",
3714             (void*)lastRef, (int)newIndex, (int)value->dataType, (void*)value->data));
3715        //printf("Getting reference 0x%08x: newIndex=%d\n", value->data, newIndex);
3716        if (inoutTypeSpecFlags != NULL) *inoutTypeSpecFlags |= newFlags;
3717        if (newIndex < 0) {
3718            // This can fail if the resource being referenced is a style...
3719            // in this case, just return the reference, and expect the
3720            // caller to deal with.
3721            return blockIndex;
3722        }
3723        blockIndex = newIndex;
3724        count++;
3725    }
3726    return blockIndex;
3727}
3728
3729const char16_t* ResTable::valueToString(
3730    const Res_value* value, size_t stringBlock,
3731    char16_t /*tmpBuffer*/ [TMP_BUFFER_SIZE], size_t* outLen) const
3732{
3733    if (!value) {
3734        return NULL;
3735    }
3736    if (value->dataType == value->TYPE_STRING) {
3737        return getTableStringBlock(stringBlock)->stringAt(value->data, outLen);
3738    }
3739    // XXX do int to string conversions.
3740    return NULL;
3741}
3742
3743ssize_t ResTable::lockBag(uint32_t resID, const bag_entry** outBag) const
3744{
3745    mLock.lock();
3746    ssize_t err = getBagLocked(resID, outBag);
3747    if (err < NO_ERROR) {
3748        //printf("*** get failed!  unlocking\n");
3749        mLock.unlock();
3750    }
3751    return err;
3752}
3753
3754void ResTable::unlockBag(const bag_entry* /*bag*/) const
3755{
3756    //printf("<<< unlockBag %p\n", this);
3757    mLock.unlock();
3758}
3759
3760void ResTable::lock() const
3761{
3762    mLock.lock();
3763}
3764
3765void ResTable::unlock() const
3766{
3767    mLock.unlock();
3768}
3769
3770ssize_t ResTable::getBagLocked(uint32_t resID, const bag_entry** outBag,
3771        uint32_t* outTypeSpecFlags) const
3772{
3773    if (mError != NO_ERROR) {
3774        return mError;
3775    }
3776
3777    const ssize_t p = getResourcePackageIndex(resID);
3778    const int t = Res_GETTYPE(resID);
3779    const int e = Res_GETENTRY(resID);
3780
3781    if (p < 0) {
3782        ALOGW("Invalid package identifier when getting bag for resource number 0x%08x", resID);
3783        return BAD_INDEX;
3784    }
3785    if (t < 0) {
3786        ALOGW("No type identifier when getting bag for resource number 0x%08x", resID);
3787        return BAD_INDEX;
3788    }
3789
3790    //printf("Get bag: id=0x%08x, p=%d, t=%d\n", resID, p, t);
3791    PackageGroup* const grp = mPackageGroups[p];
3792    if (grp == NULL) {
3793        ALOGW("Bad identifier when getting bag for resource number 0x%08x", resID);
3794        return BAD_INDEX;
3795    }
3796
3797    const TypeList& typeConfigs = grp->types[t];
3798    if (typeConfigs.isEmpty()) {
3799        ALOGW("Type identifier 0x%x does not exist.", t+1);
3800        return BAD_INDEX;
3801    }
3802
3803    const size_t NENTRY = typeConfigs[0]->entryCount;
3804    if (e >= (int)NENTRY) {
3805        ALOGW("Entry identifier 0x%x is larger than entry count 0x%x",
3806             e, (int)typeConfigs[0]->entryCount);
3807        return BAD_INDEX;
3808    }
3809
3810    // First see if we've already computed this bag...
3811    if (grp->bags) {
3812        bag_set** typeSet = grp->bags->get(t);
3813        if (typeSet) {
3814            bag_set* set = typeSet[e];
3815            if (set) {
3816                if (set != (bag_set*)0xFFFFFFFF) {
3817                    if (outTypeSpecFlags != NULL) {
3818                        *outTypeSpecFlags = set->typeSpecFlags;
3819                    }
3820                    *outBag = (bag_entry*)(set+1);
3821                    //ALOGI("Found existing bag for: %p\n", (void*)resID);
3822                    return set->numAttrs;
3823                }
3824                ALOGW("Attempt to retrieve bag 0x%08x which is invalid or in a cycle.",
3825                     resID);
3826                return BAD_INDEX;
3827            }
3828        }
3829    }
3830
3831    // Bag not found, we need to compute it!
3832    if (!grp->bags) {
3833        grp->bags = new ByteBucketArray<bag_set**>();
3834        if (!grp->bags) return NO_MEMORY;
3835    }
3836
3837    bag_set** typeSet = grp->bags->get(t);
3838    if (!typeSet) {
3839        typeSet = (bag_set**)calloc(NENTRY, sizeof(bag_set*));
3840        if (!typeSet) return NO_MEMORY;
3841        grp->bags->set(t, typeSet);
3842    }
3843
3844    // Mark that we are currently working on this one.
3845    typeSet[e] = (bag_set*)0xFFFFFFFF;
3846
3847    TABLE_NOISY(ALOGI("Building bag: %p\n", (void*)resID));
3848
3849    // Now collect all bag attributes
3850    Entry entry;
3851    status_t err = getEntry(grp, t, e, &mParams, &entry);
3852    if (err != NO_ERROR) {
3853        return err;
3854    }
3855
3856    const uint16_t entrySize = dtohs(entry.entry->size);
3857    const uint32_t parent = entrySize >= sizeof(ResTable_map_entry)
3858        ? dtohl(((const ResTable_map_entry*)entry.entry)->parent.ident) : 0;
3859    const uint32_t count = entrySize >= sizeof(ResTable_map_entry)
3860        ? dtohl(((const ResTable_map_entry*)entry.entry)->count) : 0;
3861
3862    size_t N = count;
3863
3864    TABLE_NOISY(ALOGI("Found map: size=%p parent=%p count=%d\n",
3865                     entrySize, parent, count));
3866
3867    // If this map inherits from another, we need to start
3868    // with its parent's values.  Otherwise start out empty.
3869    TABLE_NOISY(printf("Creating new bag, entrySize=0x%08x, parent=0x%08x\n",
3870                       entrySize, parent));
3871
3872    // This is what we are building.
3873    bag_set* set = NULL;
3874
3875    if (parent) {
3876        uint32_t resolvedParent = parent;
3877
3878        // Bags encode a parent reference without using the standard
3879        // Res_value structure. That means we must always try to
3880        // resolve a parent reference in case it is actually a
3881        // TYPE_DYNAMIC_REFERENCE.
3882        status_t err = grp->dynamicRefTable.lookupResourceId(&resolvedParent);
3883        if (err != NO_ERROR) {
3884            ALOGE("Failed resolving bag parent id 0x%08x", parent);
3885            return UNKNOWN_ERROR;
3886        }
3887
3888        const bag_entry* parentBag;
3889        uint32_t parentTypeSpecFlags = 0;
3890        const ssize_t NP = getBagLocked(resolvedParent, &parentBag, &parentTypeSpecFlags);
3891        const size_t NT = ((NP >= 0) ? NP : 0) + N;
3892        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*NT);
3893        if (set == NULL) {
3894            return NO_MEMORY;
3895        }
3896        if (NP > 0) {
3897            memcpy(set+1, parentBag, NP*sizeof(bag_entry));
3898            set->numAttrs = NP;
3899            TABLE_NOISY(ALOGI("Initialized new bag with %d inherited attributes.\n", NP));
3900        } else {
3901            TABLE_NOISY(ALOGI("Initialized new bag with no inherited attributes.\n"));
3902            set->numAttrs = 0;
3903        }
3904        set->availAttrs = NT;
3905        set->typeSpecFlags = parentTypeSpecFlags;
3906    } else {
3907        set = (bag_set*)malloc(sizeof(bag_set)+sizeof(bag_entry)*N);
3908        if (set == NULL) {
3909            return NO_MEMORY;
3910        }
3911        set->numAttrs = 0;
3912        set->availAttrs = N;
3913        set->typeSpecFlags = 0;
3914    }
3915
3916    set->typeSpecFlags |= entry.specFlags;
3917
3918    // Now merge in the new attributes...
3919    size_t curOff = (reinterpret_cast<uintptr_t>(entry.entry) - reinterpret_cast<uintptr_t>(entry.type))
3920        + dtohs(entry.entry->size);
3921    const ResTable_map* map;
3922    bag_entry* entries = (bag_entry*)(set+1);
3923    size_t curEntry = 0;
3924    uint32_t pos = 0;
3925    TABLE_NOISY(ALOGI("Starting with set %p, entries=%p, avail=%d\n",
3926                 set, entries, set->availAttrs));
3927    while (pos < count) {
3928        TABLE_NOISY(printf("Now at %p\n", (void*)curOff));
3929
3930        if (curOff > (dtohl(entry.type->header.size)-sizeof(ResTable_map))) {
3931            ALOGW("ResTable_map at %d is beyond type chunk data %d",
3932                 (int)curOff, dtohl(entry.type->header.size));
3933            return BAD_TYPE;
3934        }
3935        map = (const ResTable_map*)(((const uint8_t*)entry.type) + curOff);
3936        N++;
3937
3938        uint32_t newName = htodl(map->name.ident);
3939        if (!Res_INTERNALID(newName)) {
3940            // Attributes don't have a resource id as the name. They specify
3941            // other data, which would be wrong to change via a lookup.
3942            if (grp->dynamicRefTable.lookupResourceId(&newName) != NO_ERROR) {
3943                ALOGE("Failed resolving ResTable_map name at %d with ident 0x%08x",
3944                        (int) curOff, (int) newName);
3945                return UNKNOWN_ERROR;
3946            }
3947        }
3948
3949        bool isInside;
3950        uint32_t oldName = 0;
3951        while ((isInside=(curEntry < set->numAttrs))
3952                && (oldName=entries[curEntry].map.name.ident) < newName) {
3953            TABLE_NOISY(printf("#%d: Keeping existing attribute: 0x%08x\n",
3954                         curEntry, entries[curEntry].map.name.ident));
3955            curEntry++;
3956        }
3957
3958        if ((!isInside) || oldName != newName) {
3959            // This is a new attribute...  figure out what to do with it.
3960            if (set->numAttrs >= set->availAttrs) {
3961                // Need to alloc more memory...
3962                const size_t newAvail = set->availAttrs+N;
3963                set = (bag_set*)realloc(set,
3964                                        sizeof(bag_set)
3965                                        + sizeof(bag_entry)*newAvail);
3966                if (set == NULL) {
3967                    return NO_MEMORY;
3968                }
3969                set->availAttrs = newAvail;
3970                entries = (bag_entry*)(set+1);
3971                TABLE_NOISY(printf("Reallocated set %p, entries=%p, avail=%d\n",
3972                             set, entries, set->availAttrs));
3973            }
3974            if (isInside) {
3975                // Going in the middle, need to make space.
3976                memmove(entries+curEntry+1, entries+curEntry,
3977                        sizeof(bag_entry)*(set->numAttrs-curEntry));
3978                set->numAttrs++;
3979            }
3980            TABLE_NOISY(printf("#%d: Inserting new attribute: 0x%08x\n",
3981                         curEntry, newName));
3982        } else {
3983            TABLE_NOISY(printf("#%d: Replacing existing attribute: 0x%08x\n",
3984                         curEntry, oldName));
3985        }
3986
3987        bag_entry* cur = entries+curEntry;
3988
3989        cur->stringBlock = entry.package->header->index;
3990        cur->map.name.ident = newName;
3991        cur->map.value.copyFrom_dtoh(map->value);
3992        status_t err = grp->dynamicRefTable.lookupResourceValue(&cur->map.value);
3993        if (err != NO_ERROR) {
3994            ALOGE("Reference item(0x%08x) in bag could not be resolved.", cur->map.value.data);
3995            return UNKNOWN_ERROR;
3996        }
3997
3998        TABLE_NOISY(printf("Setting entry #%d %p: block=%d, name=0x%08x, type=%d, data=0x%08x\n",
3999                     curEntry, cur, cur->stringBlock, cur->map.name.ident,
4000                     cur->map.value.dataType, cur->map.value.data));
4001
4002        // On to the next!
4003        curEntry++;
4004        pos++;
4005        const size_t size = dtohs(map->value.size);
4006        curOff += size + sizeof(*map)-sizeof(map->value);
4007    };
4008
4009    if (curEntry > set->numAttrs) {
4010        set->numAttrs = curEntry;
4011    }
4012
4013    // And this is it...
4014    typeSet[e] = set;
4015    if (set) {
4016        if (outTypeSpecFlags != NULL) {
4017            *outTypeSpecFlags = set->typeSpecFlags;
4018        }
4019        *outBag = (bag_entry*)(set+1);
4020        TABLE_NOISY(ALOGI("Returning %d attrs\n", set->numAttrs));
4021        return set->numAttrs;
4022    }
4023    return BAD_INDEX;
4024}
4025
4026void ResTable::setParameters(const ResTable_config* params)
4027{
4028    mLock.lock();
4029    TABLE_GETENTRY(ALOGI("Setting parameters: %s\n", params->toString().string()));
4030    mParams = *params;
4031    for (size_t i=0; i<mPackageGroups.size(); i++) {
4032        TABLE_NOISY(ALOGI("CLEARING BAGS FOR GROUP %d!", i));
4033        mPackageGroups[i]->clearBagCache();
4034    }
4035    mLock.unlock();
4036}
4037
4038void ResTable::getParameters(ResTable_config* params) const
4039{
4040    mLock.lock();
4041    *params = mParams;
4042    mLock.unlock();
4043}
4044
4045struct id_name_map {
4046    uint32_t id;
4047    size_t len;
4048    char16_t name[6];
4049};
4050
4051const static id_name_map ID_NAMES[] = {
4052    { ResTable_map::ATTR_TYPE,  5, { '^', 't', 'y', 'p', 'e' } },
4053    { ResTable_map::ATTR_L10N,  5, { '^', 'l', '1', '0', 'n' } },
4054    { ResTable_map::ATTR_MIN,   4, { '^', 'm', 'i', 'n' } },
4055    { ResTable_map::ATTR_MAX,   4, { '^', 'm', 'a', 'x' } },
4056    { ResTable_map::ATTR_OTHER, 6, { '^', 'o', 't', 'h', 'e', 'r' } },
4057    { ResTable_map::ATTR_ZERO,  5, { '^', 'z', 'e', 'r', 'o' } },
4058    { ResTable_map::ATTR_ONE,   4, { '^', 'o', 'n', 'e' } },
4059    { ResTable_map::ATTR_TWO,   4, { '^', 't', 'w', 'o' } },
4060    { ResTable_map::ATTR_FEW,   4, { '^', 'f', 'e', 'w' } },
4061    { ResTable_map::ATTR_MANY,  5, { '^', 'm', 'a', 'n', 'y' } },
4062};
4063
4064uint32_t ResTable::identifierForName(const char16_t* name, size_t nameLen,
4065                                     const char16_t* type, size_t typeLen,
4066                                     const char16_t* package,
4067                                     size_t packageLen,
4068                                     uint32_t* outTypeSpecFlags) const
4069{
4070    TABLE_SUPER_NOISY(printf("Identifier for name: error=%d\n", mError));
4071
4072    // Check for internal resource identifier as the very first thing, so
4073    // that we will always find them even when there are no resources.
4074    if (name[0] == '^') {
4075        const int N = (sizeof(ID_NAMES)/sizeof(ID_NAMES[0]));
4076        size_t len;
4077        for (int i=0; i<N; i++) {
4078            const id_name_map* m = ID_NAMES + i;
4079            len = m->len;
4080            if (len != nameLen) {
4081                continue;
4082            }
4083            for (size_t j=1; j<len; j++) {
4084                if (m->name[j] != name[j]) {
4085                    goto nope;
4086                }
4087            }
4088            if (outTypeSpecFlags) {
4089                *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4090            }
4091            return m->id;
4092nope:
4093            ;
4094        }
4095        if (nameLen > 7) {
4096            if (name[1] == 'i' && name[2] == 'n'
4097                && name[3] == 'd' && name[4] == 'e' && name[5] == 'x'
4098                && name[6] == '_') {
4099                int index = atoi(String8(name + 7, nameLen - 7).string());
4100                if (Res_CHECKID(index)) {
4101                    ALOGW("Array resource index: %d is too large.",
4102                         index);
4103                    return 0;
4104                }
4105                if (outTypeSpecFlags) {
4106                    *outTypeSpecFlags = ResTable_typeSpec::SPEC_PUBLIC;
4107                }
4108                return  Res_MAKEARRAY(index);
4109            }
4110        }
4111        return 0;
4112    }
4113
4114    if (mError != NO_ERROR) {
4115        return 0;
4116    }
4117
4118    bool fakePublic = false;
4119
4120    // Figure out the package and type we are looking in...
4121
4122    const char16_t* packageEnd = NULL;
4123    const char16_t* typeEnd = NULL;
4124    const char16_t* const nameEnd = name+nameLen;
4125    const char16_t* p = name;
4126    while (p < nameEnd) {
4127        if (*p == ':') packageEnd = p;
4128        else if (*p == '/') typeEnd = p;
4129        p++;
4130    }
4131    if (*name == '@') {
4132        name++;
4133        if (*name == '*') {
4134            fakePublic = true;
4135            name++;
4136        }
4137    }
4138    if (name >= nameEnd) {
4139        return 0;
4140    }
4141
4142    if (packageEnd) {
4143        package = name;
4144        packageLen = packageEnd-name;
4145        name = packageEnd+1;
4146    } else if (!package) {
4147        return 0;
4148    }
4149
4150    if (typeEnd) {
4151        type = name;
4152        typeLen = typeEnd-name;
4153        name = typeEnd+1;
4154    } else if (!type) {
4155        return 0;
4156    }
4157
4158    if (name >= nameEnd) {
4159        return 0;
4160    }
4161    nameLen = nameEnd-name;
4162
4163    TABLE_NOISY(printf("Looking for identifier: type=%s, name=%s, package=%s\n",
4164                 String8(type, typeLen).string(),
4165                 String8(name, nameLen).string(),
4166                 String8(package, packageLen).string()));
4167
4168    const size_t NG = mPackageGroups.size();
4169    for (size_t ig=0; ig<NG; ig++) {
4170        const PackageGroup* group = mPackageGroups[ig];
4171
4172        if (strzcmp16(package, packageLen,
4173                      group->name.string(), group->name.size())) {
4174            TABLE_NOISY(printf("Skipping package group: %s\n", String8(group->name).string()));
4175            continue;
4176        }
4177
4178        const size_t packageCount = group->packages.size();
4179        for (size_t pi = 0; pi < packageCount; pi++) {
4180            ssize_t ti = group->packages[pi]->typeStrings.indexOfString(type, typeLen);
4181            if (ti < 0) {
4182                continue;
4183            }
4184
4185            ti += group->packages[pi]->typeIdOffset;
4186
4187            const TypeList& typeList = group->types[ti];
4188            if (typeList.isEmpty()) {
4189                TABLE_NOISY(printf("Expected type structure not found in package %s for index %d\n",
4190                                   String8(group->name).string(), ti));
4191                continue;
4192            }
4193
4194            const size_t typeCount = typeList.size();
4195            for (size_t i = 0; i < typeCount; i++) {
4196                const Type* t = typeList[i];
4197                const ssize_t ei = t->package->keyStrings.indexOfString(name, nameLen);
4198                if (ei < 0) {
4199                    continue;
4200                }
4201
4202                const size_t configCount = t->configs.size();
4203                for (size_t j = 0; j < configCount; j++) {
4204                    const TypeVariant tv(t->configs[j]);
4205                    for (TypeVariant::iterator iter = tv.beginEntries();
4206                         iter != tv.endEntries();
4207                         iter++) {
4208                        const ResTable_entry* entry = *iter;
4209                        if (entry == NULL) {
4210                            continue;
4211                        }
4212
4213                        if (dtohl(entry->key.index) == (size_t) ei) {
4214                            uint32_t resId = Res_MAKEID(group->id - 1, ti, iter.index());
4215                            if (outTypeSpecFlags) {
4216                                Entry result;
4217                                if (getEntry(group, ti, iter.index(), NULL, &result) != NO_ERROR) {
4218                                    ALOGW("Failed to find spec flags for %s:%s/%s (0x%08x)",
4219                                            String8(group->name).string(),
4220                                            String8(String16(type, typeLen)).string(),
4221                                            String8(String16(name, nameLen)).string(),
4222                                            resId);
4223                                    return 0;
4224                                }
4225                                *outTypeSpecFlags = result.specFlags;
4226
4227                                if (fakePublic) {
4228                                    *outTypeSpecFlags |= ResTable_typeSpec::SPEC_PUBLIC;
4229                                }
4230                            }
4231                            return resId;
4232                        }
4233                    }
4234                }
4235            }
4236        }
4237        break;
4238    }
4239    return 0;
4240}
4241
4242bool ResTable::expandResourceRef(const char16_t* refStr, size_t refLen,
4243                                 String16* outPackage,
4244                                 String16* outType,
4245                                 String16* outName,
4246                                 const String16* defType,
4247                                 const String16* defPackage,
4248                                 const char** outErrorMsg,
4249                                 bool* outPublicOnly)
4250{
4251    const char16_t* packageEnd = NULL;
4252    const char16_t* typeEnd = NULL;
4253    const char16_t* p = refStr;
4254    const char16_t* const end = p + refLen;
4255    while (p < end) {
4256        if (*p == ':') packageEnd = p;
4257        else if (*p == '/') {
4258            typeEnd = p;
4259            break;
4260        }
4261        p++;
4262    }
4263    p = refStr;
4264    if (*p == '@') p++;
4265
4266    if (outPublicOnly != NULL) {
4267        *outPublicOnly = true;
4268    }
4269    if (*p == '*') {
4270        p++;
4271        if (outPublicOnly != NULL) {
4272            *outPublicOnly = false;
4273        }
4274    }
4275
4276    if (packageEnd) {
4277        *outPackage = String16(p, packageEnd-p);
4278        p = packageEnd+1;
4279    } else {
4280        if (!defPackage) {
4281            if (outErrorMsg) {
4282                *outErrorMsg = "No resource package specified";
4283            }
4284            return false;
4285        }
4286        *outPackage = *defPackage;
4287    }
4288    if (typeEnd) {
4289        *outType = String16(p, typeEnd-p);
4290        p = typeEnd+1;
4291    } else {
4292        if (!defType) {
4293            if (outErrorMsg) {
4294                *outErrorMsg = "No resource type specified";
4295            }
4296            return false;
4297        }
4298        *outType = *defType;
4299    }
4300    *outName = String16(p, end-p);
4301    if(**outPackage == 0) {
4302        if(outErrorMsg) {
4303            *outErrorMsg = "Resource package cannot be an empty string";
4304        }
4305        return false;
4306    }
4307    if(**outType == 0) {
4308        if(outErrorMsg) {
4309            *outErrorMsg = "Resource type cannot be an empty string";
4310        }
4311        return false;
4312    }
4313    if(**outName == 0) {
4314        if(outErrorMsg) {
4315            *outErrorMsg = "Resource id cannot be an empty string";
4316        }
4317        return false;
4318    }
4319    return true;
4320}
4321
4322static uint32_t get_hex(char c, bool* outError)
4323{
4324    if (c >= '0' && c <= '9') {
4325        return c - '0';
4326    } else if (c >= 'a' && c <= 'f') {
4327        return c - 'a' + 0xa;
4328    } else if (c >= 'A' && c <= 'F') {
4329        return c - 'A' + 0xa;
4330    }
4331    *outError = true;
4332    return 0;
4333}
4334
4335struct unit_entry
4336{
4337    const char* name;
4338    size_t len;
4339    uint8_t type;
4340    uint32_t unit;
4341    float scale;
4342};
4343
4344static const unit_entry unitNames[] = {
4345    { "px", strlen("px"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PX, 1.0f },
4346    { "dip", strlen("dip"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4347    { "dp", strlen("dp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_DIP, 1.0f },
4348    { "sp", strlen("sp"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_SP, 1.0f },
4349    { "pt", strlen("pt"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_PT, 1.0f },
4350    { "in", strlen("in"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_IN, 1.0f },
4351    { "mm", strlen("mm"), Res_value::TYPE_DIMENSION, Res_value::COMPLEX_UNIT_MM, 1.0f },
4352    { "%", strlen("%"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION, 1.0f/100 },
4353    { "%p", strlen("%p"), Res_value::TYPE_FRACTION, Res_value::COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100 },
4354    { NULL, 0, 0, 0, 0 }
4355};
4356
4357static bool parse_unit(const char* str, Res_value* outValue,
4358                       float* outScale, const char** outEnd)
4359{
4360    const char* end = str;
4361    while (*end != 0 && !isspace((unsigned char)*end)) {
4362        end++;
4363    }
4364    const size_t len = end-str;
4365
4366    const char* realEnd = end;
4367    while (*realEnd != 0 && isspace((unsigned char)*realEnd)) {
4368        realEnd++;
4369    }
4370    if (*realEnd != 0) {
4371        return false;
4372    }
4373
4374    const unit_entry* cur = unitNames;
4375    while (cur->name) {
4376        if (len == cur->len && strncmp(cur->name, str, len) == 0) {
4377            outValue->dataType = cur->type;
4378            outValue->data = cur->unit << Res_value::COMPLEX_UNIT_SHIFT;
4379            *outScale = cur->scale;
4380            *outEnd = end;
4381            //printf("Found unit %s for %s\n", cur->name, str);
4382            return true;
4383        }
4384        cur++;
4385    }
4386
4387    return false;
4388}
4389
4390
4391bool ResTable::stringToInt(const char16_t* s, size_t len, Res_value* outValue)
4392{
4393    while (len > 0 && isspace16(*s)) {
4394        s++;
4395        len--;
4396    }
4397
4398    if (len <= 0) {
4399        return false;
4400    }
4401
4402    size_t i = 0;
4403    int32_t val = 0;
4404    bool neg = false;
4405
4406    if (*s == '-') {
4407        neg = true;
4408        i++;
4409    }
4410
4411    if (s[i] < '0' || s[i] > '9') {
4412        return false;
4413    }
4414
4415    // Decimal or hex?
4416    if (s[i] == '0' && s[i+1] == 'x') {
4417        if (outValue)
4418            outValue->dataType = outValue->TYPE_INT_HEX;
4419        i += 2;
4420        bool error = false;
4421        while (i < len && !error) {
4422            val = (val*16) + get_hex(s[i], &error);
4423            i++;
4424        }
4425        if (error) {
4426            return false;
4427        }
4428    } else {
4429        if (outValue)
4430            outValue->dataType = outValue->TYPE_INT_DEC;
4431        while (i < len) {
4432            if (s[i] < '0' || s[i] > '9') {
4433                return false;
4434            }
4435            val = (val*10) + s[i]-'0';
4436            i++;
4437        }
4438    }
4439
4440    if (neg) val = -val;
4441
4442    while (i < len && isspace16(s[i])) {
4443        i++;
4444    }
4445
4446    if (i == len) {
4447        if (outValue)
4448            outValue->data = val;
4449        return true;
4450    }
4451
4452    return false;
4453}
4454
4455bool ResTable::stringToFloat(const char16_t* s, size_t len, Res_value* outValue)
4456{
4457    while (len > 0 && isspace16(*s)) {
4458        s++;
4459        len--;
4460    }
4461
4462    if (len <= 0) {
4463        return false;
4464    }
4465
4466    char buf[128];
4467    int i=0;
4468    while (len > 0 && *s != 0 && i < 126) {
4469        if (*s > 255) {
4470            return false;
4471        }
4472        buf[i++] = *s++;
4473        len--;
4474    }
4475
4476    if (len > 0) {
4477        return false;
4478    }
4479    if (buf[0] < '0' && buf[0] > '9' && buf[0] != '.') {
4480        return false;
4481    }
4482
4483    buf[i] = 0;
4484    const char* end;
4485    float f = strtof(buf, (char**)&end);
4486
4487    if (*end != 0 && !isspace((unsigned char)*end)) {
4488        // Might be a unit...
4489        float scale;
4490        if (parse_unit(end, outValue, &scale, &end)) {
4491            f *= scale;
4492            const bool neg = f < 0;
4493            if (neg) f = -f;
4494            uint64_t bits = (uint64_t)(f*(1<<23)+.5f);
4495            uint32_t radix;
4496            uint32_t shift;
4497            if ((bits&0x7fffff) == 0) {
4498                // Always use 23p0 if there is no fraction, just to make
4499                // things easier to read.
4500                radix = Res_value::COMPLEX_RADIX_23p0;
4501                shift = 23;
4502            } else if ((bits&0xffffffffff800000LL) == 0) {
4503                // Magnitude is zero -- can fit in 0 bits of precision.
4504                radix = Res_value::COMPLEX_RADIX_0p23;
4505                shift = 0;
4506            } else if ((bits&0xffffffff80000000LL) == 0) {
4507                // Magnitude can fit in 8 bits of precision.
4508                radix = Res_value::COMPLEX_RADIX_8p15;
4509                shift = 8;
4510            } else if ((bits&0xffffff8000000000LL) == 0) {
4511                // Magnitude can fit in 16 bits of precision.
4512                radix = Res_value::COMPLEX_RADIX_16p7;
4513                shift = 16;
4514            } else {
4515                // Magnitude needs entire range, so no fractional part.
4516                radix = Res_value::COMPLEX_RADIX_23p0;
4517                shift = 23;
4518            }
4519            int32_t mantissa = (int32_t)(
4520                (bits>>shift) & Res_value::COMPLEX_MANTISSA_MASK);
4521            if (neg) {
4522                mantissa = (-mantissa) & Res_value::COMPLEX_MANTISSA_MASK;
4523            }
4524            outValue->data |=
4525                (radix<<Res_value::COMPLEX_RADIX_SHIFT)
4526                | (mantissa<<Res_value::COMPLEX_MANTISSA_SHIFT);
4527            //printf("Input value: %f 0x%016Lx, mult: %f, radix: %d, shift: %d, final: 0x%08x\n",
4528            //       f * (neg ? -1 : 1), bits, f*(1<<23),
4529            //       radix, shift, outValue->data);
4530            return true;
4531        }
4532        return false;
4533    }
4534
4535    while (*end != 0 && isspace((unsigned char)*end)) {
4536        end++;
4537    }
4538
4539    if (*end == 0) {
4540        if (outValue) {
4541            outValue->dataType = outValue->TYPE_FLOAT;
4542            *(float*)(&outValue->data) = f;
4543            return true;
4544        }
4545    }
4546
4547    return false;
4548}
4549
4550bool ResTable::stringToValue(Res_value* outValue, String16* outString,
4551                             const char16_t* s, size_t len,
4552                             bool preserveSpaces, bool coerceType,
4553                             uint32_t attrID,
4554                             const String16* defType,
4555                             const String16* defPackage,
4556                             Accessor* accessor,
4557                             void* accessorCookie,
4558                             uint32_t attrType,
4559                             bool enforcePrivate) const
4560{
4561    bool localizationSetting = accessor != NULL && accessor->getLocalizationSetting();
4562    const char* errorMsg = NULL;
4563
4564    outValue->size = sizeof(Res_value);
4565    outValue->res0 = 0;
4566
4567    // First strip leading/trailing whitespace.  Do this before handling
4568    // escapes, so they can be used to force whitespace into the string.
4569    if (!preserveSpaces) {
4570        while (len > 0 && isspace16(*s)) {
4571            s++;
4572            len--;
4573        }
4574        while (len > 0 && isspace16(s[len-1])) {
4575            len--;
4576        }
4577        // If the string ends with '\', then we keep the space after it.
4578        if (len > 0 && s[len-1] == '\\' && s[len] != 0) {
4579            len++;
4580        }
4581    }
4582
4583    //printf("Value for: %s\n", String8(s, len).string());
4584
4585    uint32_t l10nReq = ResTable_map::L10N_NOT_REQUIRED;
4586    uint32_t attrMin = 0x80000000, attrMax = 0x7fffffff;
4587    bool fromAccessor = false;
4588    if (attrID != 0 && !Res_INTERNALID(attrID)) {
4589        const ssize_t p = getResourcePackageIndex(attrID);
4590        const bag_entry* bag;
4591        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4592        //printf("For attr 0x%08x got bag of %d\n", attrID, cnt);
4593        if (cnt >= 0) {
4594            while (cnt > 0) {
4595                //printf("Entry 0x%08x = 0x%08x\n", bag->map.name.ident, bag->map.value.data);
4596                switch (bag->map.name.ident) {
4597                case ResTable_map::ATTR_TYPE:
4598                    attrType = bag->map.value.data;
4599                    break;
4600                case ResTable_map::ATTR_MIN:
4601                    attrMin = bag->map.value.data;
4602                    break;
4603                case ResTable_map::ATTR_MAX:
4604                    attrMax = bag->map.value.data;
4605                    break;
4606                case ResTable_map::ATTR_L10N:
4607                    l10nReq = bag->map.value.data;
4608                    break;
4609                }
4610                bag++;
4611                cnt--;
4612            }
4613            unlockBag(bag);
4614        } else if (accessor && accessor->getAttributeType(attrID, &attrType)) {
4615            fromAccessor = true;
4616            if (attrType == ResTable_map::TYPE_ENUM
4617                    || attrType == ResTable_map::TYPE_FLAGS
4618                    || attrType == ResTable_map::TYPE_INTEGER) {
4619                accessor->getAttributeMin(attrID, &attrMin);
4620                accessor->getAttributeMax(attrID, &attrMax);
4621            }
4622            if (localizationSetting) {
4623                l10nReq = accessor->getAttributeL10N(attrID);
4624            }
4625        }
4626    }
4627
4628    const bool canStringCoerce =
4629        coerceType && (attrType&ResTable_map::TYPE_STRING) != 0;
4630
4631    if (*s == '@') {
4632        outValue->dataType = outValue->TYPE_REFERENCE;
4633
4634        // Note: we don't check attrType here because the reference can
4635        // be to any other type; we just need to count on the client making
4636        // sure the referenced type is correct.
4637
4638        //printf("Looking up ref: %s\n", String8(s, len).string());
4639
4640        // It's a reference!
4641        if (len == 5 && s[1]=='n' && s[2]=='u' && s[3]=='l' && s[4]=='l') {
4642            // Special case @null as undefined. This will be converted by
4643            // AssetManager to TYPE_NULL with data DATA_NULL_UNDEFINED.
4644            outValue->data = 0;
4645            return true;
4646        } else if (len == 6 && s[1]=='e' && s[2]=='m' && s[3]=='p' && s[4]=='t' && s[5]=='y') {
4647            // Special case @empty as explicitly defined empty value.
4648            outValue->dataType = Res_value::TYPE_NULL;
4649            outValue->data = Res_value::DATA_NULL_EMPTY;
4650            return true;
4651        } else {
4652            bool createIfNotFound = false;
4653            const char16_t* resourceRefName;
4654            int resourceNameLen;
4655            if (len > 2 && s[1] == '+') {
4656                createIfNotFound = true;
4657                resourceRefName = s + 2;
4658                resourceNameLen = len - 2;
4659            } else if (len > 2 && s[1] == '*') {
4660                enforcePrivate = false;
4661                resourceRefName = s + 2;
4662                resourceNameLen = len - 2;
4663            } else {
4664                createIfNotFound = false;
4665                resourceRefName = s + 1;
4666                resourceNameLen = len - 1;
4667            }
4668            String16 package, type, name;
4669            if (!expandResourceRef(resourceRefName,resourceNameLen, &package, &type, &name,
4670                                   defType, defPackage, &errorMsg)) {
4671                if (accessor != NULL) {
4672                    accessor->reportError(accessorCookie, errorMsg);
4673                }
4674                return false;
4675            }
4676
4677            uint32_t specFlags = 0;
4678            uint32_t rid = identifierForName(name.string(), name.size(), type.string(),
4679                    type.size(), package.string(), package.size(), &specFlags);
4680            if (rid != 0) {
4681                if (enforcePrivate) {
4682                    if (accessor == NULL || accessor->getAssetsPackage() != package) {
4683                        if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4684                            if (accessor != NULL) {
4685                                accessor->reportError(accessorCookie, "Resource is not public.");
4686                            }
4687                            return false;
4688                        }
4689                    }
4690                }
4691
4692                if (accessor) {
4693                    rid = Res_MAKEID(
4694                        accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4695                        Res_GETTYPE(rid), Res_GETENTRY(rid));
4696                    TABLE_NOISY(printf("Incl %s:%s/%s: 0x%08x\n",
4697                           String8(package).string(), String8(type).string(),
4698                           String8(name).string(), rid));
4699                }
4700
4701                uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4702                if (packageId != APP_PACKAGE_ID && packageId != SYS_PACKAGE_ID) {
4703                    outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4704                }
4705                outValue->data = rid;
4706                return true;
4707            }
4708
4709            if (accessor) {
4710                uint32_t rid = accessor->getCustomResourceWithCreation(package, type, name,
4711                                                                       createIfNotFound);
4712                if (rid != 0) {
4713                    TABLE_NOISY(printf("Pckg %s:%s/%s: 0x%08x\n",
4714                           String8(package).string(), String8(type).string(),
4715                           String8(name).string(), rid));
4716                    uint32_t packageId = Res_GETPACKAGE(rid) + 1;
4717                    if (packageId == 0x00) {
4718                        outValue->data = rid;
4719                        outValue->dataType = Res_value::TYPE_DYNAMIC_REFERENCE;
4720                        return true;
4721                    } else if (packageId == APP_PACKAGE_ID || packageId == SYS_PACKAGE_ID) {
4722                        // We accept packageId's generated as 0x01 in order to support
4723                        // building the android system resources
4724                        outValue->data = rid;
4725                        return true;
4726                    }
4727                }
4728            }
4729        }
4730
4731        if (accessor != NULL) {
4732            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4733        }
4734        return false;
4735    }
4736
4737    // if we got to here, and localization is required and it's not a reference,
4738    // complain and bail.
4739    if (l10nReq == ResTable_map::L10N_SUGGESTED) {
4740        if (localizationSetting) {
4741            if (accessor != NULL) {
4742                accessor->reportError(accessorCookie, "This attribute must be localized.");
4743            }
4744        }
4745    }
4746
4747    if (*s == '#') {
4748        // It's a color!  Convert to an integer of the form 0xaarrggbb.
4749        uint32_t color = 0;
4750        bool error = false;
4751        if (len == 4) {
4752            outValue->dataType = outValue->TYPE_INT_COLOR_RGB4;
4753            color |= 0xFF000000;
4754            color |= get_hex(s[1], &error) << 20;
4755            color |= get_hex(s[1], &error) << 16;
4756            color |= get_hex(s[2], &error) << 12;
4757            color |= get_hex(s[2], &error) << 8;
4758            color |= get_hex(s[3], &error) << 4;
4759            color |= get_hex(s[3], &error);
4760        } else if (len == 5) {
4761            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB4;
4762            color |= get_hex(s[1], &error) << 28;
4763            color |= get_hex(s[1], &error) << 24;
4764            color |= get_hex(s[2], &error) << 20;
4765            color |= get_hex(s[2], &error) << 16;
4766            color |= get_hex(s[3], &error) << 12;
4767            color |= get_hex(s[3], &error) << 8;
4768            color |= get_hex(s[4], &error) << 4;
4769            color |= get_hex(s[4], &error);
4770        } else if (len == 7) {
4771            outValue->dataType = outValue->TYPE_INT_COLOR_RGB8;
4772            color |= 0xFF000000;
4773            color |= get_hex(s[1], &error) << 20;
4774            color |= get_hex(s[2], &error) << 16;
4775            color |= get_hex(s[3], &error) << 12;
4776            color |= get_hex(s[4], &error) << 8;
4777            color |= get_hex(s[5], &error) << 4;
4778            color |= get_hex(s[6], &error);
4779        } else if (len == 9) {
4780            outValue->dataType = outValue->TYPE_INT_COLOR_ARGB8;
4781            color |= get_hex(s[1], &error) << 28;
4782            color |= get_hex(s[2], &error) << 24;
4783            color |= get_hex(s[3], &error) << 20;
4784            color |= get_hex(s[4], &error) << 16;
4785            color |= get_hex(s[5], &error) << 12;
4786            color |= get_hex(s[6], &error) << 8;
4787            color |= get_hex(s[7], &error) << 4;
4788            color |= get_hex(s[8], &error);
4789        } else {
4790            error = true;
4791        }
4792        if (!error) {
4793            if ((attrType&ResTable_map::TYPE_COLOR) == 0) {
4794                if (!canStringCoerce) {
4795                    if (accessor != NULL) {
4796                        accessor->reportError(accessorCookie,
4797                                "Color types not allowed");
4798                    }
4799                    return false;
4800                }
4801            } else {
4802                outValue->data = color;
4803                //printf("Color input=%s, output=0x%x\n", String8(s, len).string(), color);
4804                return true;
4805            }
4806        } else {
4807            if ((attrType&ResTable_map::TYPE_COLOR) != 0) {
4808                if (accessor != NULL) {
4809                    accessor->reportError(accessorCookie, "Color value not valid --"
4810                            " must be #rgb, #argb, #rrggbb, or #aarrggbb");
4811                }
4812                #if 0
4813                fprintf(stderr, "%s: Color ID %s value %s is not valid\n",
4814                        "Resource File", //(const char*)in->getPrintableSource(),
4815                        String8(*curTag).string(),
4816                        String8(s, len).string());
4817                #endif
4818                return false;
4819            }
4820        }
4821    }
4822
4823    if (*s == '?') {
4824        outValue->dataType = outValue->TYPE_ATTRIBUTE;
4825
4826        // Note: we don't check attrType here because the reference can
4827        // be to any other type; we just need to count on the client making
4828        // sure the referenced type is correct.
4829
4830        //printf("Looking up attr: %s\n", String8(s, len).string());
4831
4832        static const String16 attr16("attr");
4833        String16 package, type, name;
4834        if (!expandResourceRef(s+1, len-1, &package, &type, &name,
4835                               &attr16, defPackage, &errorMsg)) {
4836            if (accessor != NULL) {
4837                accessor->reportError(accessorCookie, errorMsg);
4838            }
4839            return false;
4840        }
4841
4842        //printf("Pkg: %s, Type: %s, Name: %s\n",
4843        //       String8(package).string(), String8(type).string(),
4844        //       String8(name).string());
4845        uint32_t specFlags = 0;
4846        uint32_t rid =
4847            identifierForName(name.string(), name.size(),
4848                              type.string(), type.size(),
4849                              package.string(), package.size(), &specFlags);
4850        if (rid != 0) {
4851            if (enforcePrivate) {
4852                if ((specFlags&ResTable_typeSpec::SPEC_PUBLIC) == 0) {
4853                    if (accessor != NULL) {
4854                        accessor->reportError(accessorCookie, "Attribute is not public.");
4855                    }
4856                    return false;
4857                }
4858            }
4859            if (!accessor) {
4860                outValue->data = rid;
4861                return true;
4862            }
4863            rid = Res_MAKEID(
4864                accessor->getRemappedPackage(Res_GETPACKAGE(rid)),
4865                Res_GETTYPE(rid), Res_GETENTRY(rid));
4866            //printf("Incl %s:%s/%s: 0x%08x\n",
4867            //       String8(package).string(), String8(type).string(),
4868            //       String8(name).string(), rid);
4869            outValue->data = rid;
4870            return true;
4871        }
4872
4873        if (accessor) {
4874            uint32_t rid = accessor->getCustomResource(package, type, name);
4875            if (rid != 0) {
4876                //printf("Mine %s:%s/%s: 0x%08x\n",
4877                //       String8(package).string(), String8(type).string(),
4878                //       String8(name).string(), rid);
4879                outValue->data = rid;
4880                return true;
4881            }
4882        }
4883
4884        if (accessor != NULL) {
4885            accessor->reportError(accessorCookie, "No resource found that matches the given name");
4886        }
4887        return false;
4888    }
4889
4890    if (stringToInt(s, len, outValue)) {
4891        if ((attrType&ResTable_map::TYPE_INTEGER) == 0) {
4892            // If this type does not allow integers, but does allow floats,
4893            // fall through on this error case because the float type should
4894            // be able to accept any integer value.
4895            if (!canStringCoerce && (attrType&ResTable_map::TYPE_FLOAT) == 0) {
4896                if (accessor != NULL) {
4897                    accessor->reportError(accessorCookie, "Integer types not allowed");
4898                }
4899                return false;
4900            }
4901        } else {
4902            if (((int32_t)outValue->data) < ((int32_t)attrMin)
4903                    || ((int32_t)outValue->data) > ((int32_t)attrMax)) {
4904                if (accessor != NULL) {
4905                    accessor->reportError(accessorCookie, "Integer value out of range");
4906                }
4907                return false;
4908            }
4909            return true;
4910        }
4911    }
4912
4913    if (stringToFloat(s, len, outValue)) {
4914        if (outValue->dataType == Res_value::TYPE_DIMENSION) {
4915            if ((attrType&ResTable_map::TYPE_DIMENSION) != 0) {
4916                return true;
4917            }
4918            if (!canStringCoerce) {
4919                if (accessor != NULL) {
4920                    accessor->reportError(accessorCookie, "Dimension types not allowed");
4921                }
4922                return false;
4923            }
4924        } else if (outValue->dataType == Res_value::TYPE_FRACTION) {
4925            if ((attrType&ResTable_map::TYPE_FRACTION) != 0) {
4926                return true;
4927            }
4928            if (!canStringCoerce) {
4929                if (accessor != NULL) {
4930                    accessor->reportError(accessorCookie, "Fraction types not allowed");
4931                }
4932                return false;
4933            }
4934        } else if ((attrType&ResTable_map::TYPE_FLOAT) == 0) {
4935            if (!canStringCoerce) {
4936                if (accessor != NULL) {
4937                    accessor->reportError(accessorCookie, "Float types not allowed");
4938                }
4939                return false;
4940            }
4941        } else {
4942            return true;
4943        }
4944    }
4945
4946    if (len == 4) {
4947        if ((s[0] == 't' || s[0] == 'T') &&
4948            (s[1] == 'r' || s[1] == 'R') &&
4949            (s[2] == 'u' || s[2] == 'U') &&
4950            (s[3] == 'e' || s[3] == 'E')) {
4951            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4952                if (!canStringCoerce) {
4953                    if (accessor != NULL) {
4954                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4955                    }
4956                    return false;
4957                }
4958            } else {
4959                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4960                outValue->data = (uint32_t)-1;
4961                return true;
4962            }
4963        }
4964    }
4965
4966    if (len == 5) {
4967        if ((s[0] == 'f' || s[0] == 'F') &&
4968            (s[1] == 'a' || s[1] == 'A') &&
4969            (s[2] == 'l' || s[2] == 'L') &&
4970            (s[3] == 's' || s[3] == 'S') &&
4971            (s[4] == 'e' || s[4] == 'E')) {
4972            if ((attrType&ResTable_map::TYPE_BOOLEAN) == 0) {
4973                if (!canStringCoerce) {
4974                    if (accessor != NULL) {
4975                        accessor->reportError(accessorCookie, "Boolean types not allowed");
4976                    }
4977                    return false;
4978                }
4979            } else {
4980                outValue->dataType = outValue->TYPE_INT_BOOLEAN;
4981                outValue->data = 0;
4982                return true;
4983            }
4984        }
4985    }
4986
4987    if ((attrType&ResTable_map::TYPE_ENUM) != 0) {
4988        const ssize_t p = getResourcePackageIndex(attrID);
4989        const bag_entry* bag;
4990        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
4991        //printf("Got %d for enum\n", cnt);
4992        if (cnt >= 0) {
4993            resource_name rname;
4994            while (cnt > 0) {
4995                if (!Res_INTERNALID(bag->map.name.ident)) {
4996                    //printf("Trying attr #%08x\n", bag->map.name.ident);
4997                    if (getResourceName(bag->map.name.ident, false, &rname)) {
4998                        #if 0
4999                        printf("Matching %s against %s (0x%08x)\n",
5000                               String8(s, len).string(),
5001                               String8(rname.name, rname.nameLen).string(),
5002                               bag->map.name.ident);
5003                        #endif
5004                        if (strzcmp16(s, len, rname.name, rname.nameLen) == 0) {
5005                            outValue->dataType = bag->map.value.dataType;
5006                            outValue->data = bag->map.value.data;
5007                            unlockBag(bag);
5008                            return true;
5009                        }
5010                    }
5011
5012                }
5013                bag++;
5014                cnt--;
5015            }
5016            unlockBag(bag);
5017        }
5018
5019        if (fromAccessor) {
5020            if (accessor->getAttributeEnum(attrID, s, len, outValue)) {
5021                return true;
5022            }
5023        }
5024    }
5025
5026    if ((attrType&ResTable_map::TYPE_FLAGS) != 0) {
5027        const ssize_t p = getResourcePackageIndex(attrID);
5028        const bag_entry* bag;
5029        ssize_t cnt = p >= 0 ? lockBag(attrID, &bag) : -1;
5030        //printf("Got %d for flags\n", cnt);
5031        if (cnt >= 0) {
5032            bool failed = false;
5033            resource_name rname;
5034            outValue->dataType = Res_value::TYPE_INT_HEX;
5035            outValue->data = 0;
5036            const char16_t* end = s + len;
5037            const char16_t* pos = s;
5038            while (pos < end && !failed) {
5039                const char16_t* start = pos;
5040                pos++;
5041                while (pos < end && *pos != '|') {
5042                    pos++;
5043                }
5044                //printf("Looking for: %s\n", String8(start, pos-start).string());
5045                const bag_entry* bagi = bag;
5046                ssize_t i;
5047                for (i=0; i<cnt; i++, bagi++) {
5048                    if (!Res_INTERNALID(bagi->map.name.ident)) {
5049                        //printf("Trying attr #%08x\n", bagi->map.name.ident);
5050                        if (getResourceName(bagi->map.name.ident, false, &rname)) {
5051                            #if 0
5052                            printf("Matching %s against %s (0x%08x)\n",
5053                                   String8(start,pos-start).string(),
5054                                   String8(rname.name, rname.nameLen).string(),
5055                                   bagi->map.name.ident);
5056                            #endif
5057                            if (strzcmp16(start, pos-start, rname.name, rname.nameLen) == 0) {
5058                                outValue->data |= bagi->map.value.data;
5059                                break;
5060                            }
5061                        }
5062                    }
5063                }
5064                if (i >= cnt) {
5065                    // Didn't find this flag identifier.
5066                    failed = true;
5067                }
5068                if (pos < end) {
5069                    pos++;
5070                }
5071            }
5072            unlockBag(bag);
5073            if (!failed) {
5074                //printf("Final flag value: 0x%lx\n", outValue->data);
5075                return true;
5076            }
5077        }
5078
5079
5080        if (fromAccessor) {
5081            if (accessor->getAttributeFlags(attrID, s, len, outValue)) {
5082                //printf("Final flag value: 0x%lx\n", outValue->data);
5083                return true;
5084            }
5085        }
5086    }
5087
5088    if ((attrType&ResTable_map::TYPE_STRING) == 0) {
5089        if (accessor != NULL) {
5090            accessor->reportError(accessorCookie, "String types not allowed");
5091        }
5092        return false;
5093    }
5094
5095    // Generic string handling...
5096    outValue->dataType = outValue->TYPE_STRING;
5097    if (outString) {
5098        bool failed = collectString(outString, s, len, preserveSpaces, &errorMsg);
5099        if (accessor != NULL) {
5100            accessor->reportError(accessorCookie, errorMsg);
5101        }
5102        return failed;
5103    }
5104
5105    return true;
5106}
5107
5108bool ResTable::collectString(String16* outString,
5109                             const char16_t* s, size_t len,
5110                             bool preserveSpaces,
5111                             const char** outErrorMsg,
5112                             bool append)
5113{
5114    String16 tmp;
5115
5116    char quoted = 0;
5117    const char16_t* p = s;
5118    while (p < (s+len)) {
5119        while (p < (s+len)) {
5120            const char16_t c = *p;
5121            if (c == '\\') {
5122                break;
5123            }
5124            if (!preserveSpaces) {
5125                if (quoted == 0 && isspace16(c)
5126                    && (c != ' ' || isspace16(*(p+1)))) {
5127                    break;
5128                }
5129                if (c == '"' && (quoted == 0 || quoted == '"')) {
5130                    break;
5131                }
5132                if (c == '\'' && (quoted == 0 || quoted == '\'')) {
5133                    /*
5134                     * In practice, when people write ' instead of \'
5135                     * in a string, they are doing it by accident
5136                     * instead of really meaning to use ' as a quoting
5137                     * character.  Warn them so they don't lose it.
5138                     */
5139                    if (outErrorMsg) {
5140                        *outErrorMsg = "Apostrophe not preceded by \\";
5141                    }
5142                    return false;
5143                }
5144            }
5145            p++;
5146        }
5147        if (p < (s+len)) {
5148            if (p > s) {
5149                tmp.append(String16(s, p-s));
5150            }
5151            if (!preserveSpaces && (*p == '"' || *p == '\'')) {
5152                if (quoted == 0) {
5153                    quoted = *p;
5154                } else {
5155                    quoted = 0;
5156                }
5157                p++;
5158            } else if (!preserveSpaces && isspace16(*p)) {
5159                // Space outside of a quote -- consume all spaces and
5160                // leave a single plain space char.
5161                tmp.append(String16(" "));
5162                p++;
5163                while (p < (s+len) && isspace16(*p)) {
5164                    p++;
5165                }
5166            } else if (*p == '\\') {
5167                p++;
5168                if (p < (s+len)) {
5169                    switch (*p) {
5170                    case 't':
5171                        tmp.append(String16("\t"));
5172                        break;
5173                    case 'n':
5174                        tmp.append(String16("\n"));
5175                        break;
5176                    case '#':
5177                        tmp.append(String16("#"));
5178                        break;
5179                    case '@':
5180                        tmp.append(String16("@"));
5181                        break;
5182                    case '?':
5183                        tmp.append(String16("?"));
5184                        break;
5185                    case '"':
5186                        tmp.append(String16("\""));
5187                        break;
5188                    case '\'':
5189                        tmp.append(String16("'"));
5190                        break;
5191                    case '\\':
5192                        tmp.append(String16("\\"));
5193                        break;
5194                    case 'u':
5195                    {
5196                        char16_t chr = 0;
5197                        int i = 0;
5198                        while (i < 4 && p[1] != 0) {
5199                            p++;
5200                            i++;
5201                            int c;
5202                            if (*p >= '0' && *p <= '9') {
5203                                c = *p - '0';
5204                            } else if (*p >= 'a' && *p <= 'f') {
5205                                c = *p - 'a' + 10;
5206                            } else if (*p >= 'A' && *p <= 'F') {
5207                                c = *p - 'A' + 10;
5208                            } else {
5209                                if (outErrorMsg) {
5210                                    *outErrorMsg = "Bad character in \\u unicode escape sequence";
5211                                }
5212                                return false;
5213                            }
5214                            chr = (chr<<4) | c;
5215                        }
5216                        tmp.append(String16(&chr, 1));
5217                    } break;
5218                    default:
5219                        // ignore unknown escape chars.
5220                        break;
5221                    }
5222                    p++;
5223                }
5224            }
5225            len -= (p-s);
5226            s = p;
5227        }
5228    }
5229
5230    if (tmp.size() != 0) {
5231        if (len > 0) {
5232            tmp.append(String16(s, len));
5233        }
5234        if (append) {
5235            outString->append(tmp);
5236        } else {
5237            outString->setTo(tmp);
5238        }
5239    } else {
5240        if (append) {
5241            outString->append(String16(s, len));
5242        } else {
5243            outString->setTo(s, len);
5244        }
5245    }
5246
5247    return true;
5248}
5249
5250size_t ResTable::getBasePackageCount() const
5251{
5252    if (mError != NO_ERROR) {
5253        return 0;
5254    }
5255    return mPackageGroups.size();
5256}
5257
5258const String16 ResTable::getBasePackageName(size_t idx) const
5259{
5260    if (mError != NO_ERROR) {
5261        return String16();
5262    }
5263    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5264                 "Requested package index %d past package count %d",
5265                 (int)idx, (int)mPackageGroups.size());
5266    return mPackageGroups[idx]->name;
5267}
5268
5269uint32_t ResTable::getBasePackageId(size_t idx) const
5270{
5271    if (mError != NO_ERROR) {
5272        return 0;
5273    }
5274    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5275                 "Requested package index %d past package count %d",
5276                 (int)idx, (int)mPackageGroups.size());
5277    return mPackageGroups[idx]->id;
5278}
5279
5280uint32_t ResTable::getLastTypeIdForPackage(size_t idx) const
5281{
5282    if (mError != NO_ERROR) {
5283        return 0;
5284    }
5285    LOG_FATAL_IF(idx >= mPackageGroups.size(),
5286            "Requested package index %d past package count %d",
5287            (int)idx, (int)mPackageGroups.size());
5288    const PackageGroup* const group = mPackageGroups[idx];
5289    return group->largestTypeId;
5290}
5291
5292size_t ResTable::getTableCount() const
5293{
5294    return mHeaders.size();
5295}
5296
5297const ResStringPool* ResTable::getTableStringBlock(size_t index) const
5298{
5299    return &mHeaders[index]->values;
5300}
5301
5302int32_t ResTable::getTableCookie(size_t index) const
5303{
5304    return mHeaders[index]->cookie;
5305}
5306
5307const DynamicRefTable* ResTable::getDynamicRefTableForCookie(int32_t cookie) const
5308{
5309    const size_t N = mPackageGroups.size();
5310    for (size_t i = 0; i < N; i++) {
5311        const PackageGroup* pg = mPackageGroups[i];
5312        size_t M = pg->packages.size();
5313        for (size_t j = 0; j < M; j++) {
5314            if (pg->packages[j]->header->cookie == cookie) {
5315                return &pg->dynamicRefTable;
5316            }
5317        }
5318    }
5319    return NULL;
5320}
5321
5322void ResTable::getConfigurations(Vector<ResTable_config>* configs) const
5323{
5324    const size_t packageCount = mPackageGroups.size();
5325    for (size_t i = 0; i < packageCount; i++) {
5326        const PackageGroup* packageGroup = mPackageGroups[i];
5327        const size_t typeCount = packageGroup->types.size();
5328        for (size_t j = 0; j < typeCount; j++) {
5329            const TypeList& typeList = packageGroup->types[j];
5330            const size_t numTypes = typeList.size();
5331            for (size_t k = 0; k < numTypes; k++) {
5332                const Type* type = typeList[k];
5333                const size_t numConfigs = type->configs.size();
5334                for (size_t m = 0; m < numConfigs; m++) {
5335                    const ResTable_type* config = type->configs[m];
5336                    ResTable_config cfg;
5337                    memset(&cfg, 0, sizeof(ResTable_config));
5338                    cfg.copyFromDtoH(config->config);
5339                    // only insert unique
5340                    const size_t N = configs->size();
5341                    size_t n;
5342                    for (n = 0; n < N; n++) {
5343                        if (0 == (*configs)[n].compare(cfg)) {
5344                            break;
5345                        }
5346                    }
5347                    // if we didn't find it
5348                    if (n == N) {
5349                        configs->add(cfg);
5350                    }
5351                }
5352            }
5353        }
5354    }
5355}
5356
5357void ResTable::getLocales(Vector<String8>* locales) const
5358{
5359    Vector<ResTable_config> configs;
5360    ALOGV("calling getConfigurations");
5361    getConfigurations(&configs);
5362    ALOGV("called getConfigurations size=%d", (int)configs.size());
5363    const size_t I = configs.size();
5364
5365    char locale[RESTABLE_MAX_LOCALE_LEN];
5366    for (size_t i=0; i<I; i++) {
5367        configs[i].getBcp47Locale(locale);
5368        const size_t J = locales->size();
5369        size_t j;
5370        for (j=0; j<J; j++) {
5371            if (0 == strcmp(locale, (*locales)[j].string())) {
5372                break;
5373            }
5374        }
5375        if (j == J) {
5376            locales->add(String8(locale));
5377        }
5378    }
5379}
5380
5381StringPoolRef::StringPoolRef(const ResStringPool* pool, uint32_t index)
5382    : mPool(pool), mIndex(index) {}
5383
5384StringPoolRef::StringPoolRef()
5385    : mPool(NULL), mIndex(0) {}
5386
5387const char* StringPoolRef::string8(size_t* outLen) const {
5388    if (mPool != NULL) {
5389        return mPool->string8At(mIndex, outLen);
5390    }
5391    if (outLen != NULL) {
5392        *outLen = 0;
5393    }
5394    return NULL;
5395}
5396
5397const char16_t* StringPoolRef::string16(size_t* outLen) const {
5398    if (mPool != NULL) {
5399        return mPool->stringAt(mIndex, outLen);
5400    }
5401    if (outLen != NULL) {
5402        *outLen = 0;
5403    }
5404    return NULL;
5405}
5406
5407bool ResTable::getResourceFlags(uint32_t resID, uint32_t* outFlags) const {
5408    if (mError != NO_ERROR) {
5409        return false;
5410    }
5411
5412    const ssize_t p = getResourcePackageIndex(resID);
5413    const int t = Res_GETTYPE(resID);
5414    const int e = Res_GETENTRY(resID);
5415
5416    if (p < 0) {
5417        if (Res_GETPACKAGE(resID)+1 == 0) {
5418            ALOGW("No package identifier when getting flags for resource number 0x%08x", resID);
5419        } else {
5420            ALOGW("No known package when getting flags for resource number 0x%08x", resID);
5421        }
5422        return false;
5423    }
5424    if (t < 0) {
5425        ALOGW("No type identifier when getting flags for resource number 0x%08x", resID);
5426        return false;
5427    }
5428
5429    const PackageGroup* const grp = mPackageGroups[p];
5430    if (grp == NULL) {
5431        ALOGW("Bad identifier when getting flags for resource number 0x%08x", resID);
5432        return false;
5433    }
5434
5435    Entry entry;
5436    status_t err = getEntry(grp, t, e, NULL, &entry);
5437    if (err != NO_ERROR) {
5438        return false;
5439    }
5440
5441    *outFlags = entry.specFlags;
5442    return true;
5443}
5444
5445status_t ResTable::getEntry(
5446        const PackageGroup* packageGroup, int typeIndex, int entryIndex,
5447        const ResTable_config* config,
5448        Entry* outEntry) const
5449{
5450    const TypeList& typeList = packageGroup->types[typeIndex];
5451    if (typeList.isEmpty()) {
5452        ALOGV("Skipping entry type index 0x%02x because type is NULL!\n", typeIndex);
5453        return BAD_TYPE;
5454    }
5455
5456    const ResTable_type* bestType = NULL;
5457    uint32_t bestOffset = ResTable_type::NO_ENTRY;
5458    const Package* bestPackage = NULL;
5459    uint32_t specFlags = 0;
5460    uint8_t actualTypeIndex = typeIndex;
5461    ResTable_config bestConfig;
5462    memset(&bestConfig, 0, sizeof(bestConfig));
5463
5464    // Iterate over the Types of each package.
5465    const size_t typeCount = typeList.size();
5466    for (size_t i = 0; i < typeCount; i++) {
5467        const Type* const typeSpec = typeList[i];
5468
5469        int realEntryIndex = entryIndex;
5470        int realTypeIndex = typeIndex;
5471        bool currentTypeIsOverlay = false;
5472
5473        // Runtime overlay packages provide a mapping of app resource
5474        // ID to package resource ID.
5475        if (typeSpec->idmapEntries.hasEntries()) {
5476            uint16_t overlayEntryIndex;
5477            if (typeSpec->idmapEntries.lookup(entryIndex, &overlayEntryIndex) != NO_ERROR) {
5478                // No such mapping exists
5479                continue;
5480            }
5481            realEntryIndex = overlayEntryIndex;
5482            realTypeIndex = typeSpec->idmapEntries.overlayTypeId() - 1;
5483            currentTypeIsOverlay = true;
5484        }
5485
5486        if (static_cast<size_t>(realEntryIndex) >= typeSpec->entryCount) {
5487            ALOGW("For resource 0x%08x, entry index(%d) is beyond type entryCount(%d)",
5488                    Res_MAKEID(packageGroup->id - 1, typeIndex, entryIndex),
5489                    entryIndex, static_cast<int>(typeSpec->entryCount));
5490            // We should normally abort here, but some legacy apps declare
5491            // resources in the 'android' package (old bug in AAPT).
5492            continue;
5493        }
5494
5495        // Aggregate all the flags for each package that defines this entry.
5496        if (typeSpec->typeSpecFlags != NULL) {
5497            specFlags |= dtohl(typeSpec->typeSpecFlags[realEntryIndex]);
5498        } else {
5499            specFlags = -1;
5500        }
5501
5502        const size_t numConfigs = typeSpec->configs.size();
5503        for (size_t c = 0; c < numConfigs; c++) {
5504            const ResTable_type* const thisType = typeSpec->configs[c];
5505            if (thisType == NULL) {
5506                continue;
5507            }
5508
5509            ResTable_config thisConfig;
5510            thisConfig.copyFromDtoH(thisType->config);
5511
5512            // Check to make sure this one is valid for the current parameters.
5513            if (config != NULL && !thisConfig.match(*config)) {
5514                continue;
5515            }
5516
5517            // Check if there is the desired entry in this type.
5518            const uint8_t* const end = reinterpret_cast<const uint8_t*>(thisType)
5519                    + dtohl(thisType->header.size);
5520            const uint32_t* const eindex = reinterpret_cast<const uint32_t*>(
5521                    reinterpret_cast<const uint8_t*>(thisType) + dtohs(thisType->header.headerSize));
5522
5523            uint32_t thisOffset = dtohl(eindex[realEntryIndex]);
5524            if (thisOffset == ResTable_type::NO_ENTRY) {
5525                // There is no entry for this index and configuration.
5526                continue;
5527            }
5528
5529            if (bestType != NULL) {
5530                // Check if this one is less specific than the last found.  If so,
5531                // we will skip it.  We check starting with things we most care
5532                // about to those we least care about.
5533                if (!thisConfig.isBetterThan(bestConfig, config)) {
5534                    if (!currentTypeIsOverlay || thisConfig.compare(bestConfig) != 0) {
5535                        continue;
5536                    }
5537                }
5538            }
5539
5540            bestType = thisType;
5541            bestOffset = thisOffset;
5542            bestConfig = thisConfig;
5543            bestPackage = typeSpec->package;
5544            actualTypeIndex = realTypeIndex;
5545
5546            // If no config was specified, any type will do, so skip
5547            if (config == NULL) {
5548                break;
5549            }
5550        }
5551    }
5552
5553    if (bestType == NULL) {
5554        return BAD_INDEX;
5555    }
5556
5557    bestOffset += dtohl(bestType->entriesStart);
5558
5559    if (bestOffset > (dtohl(bestType->header.size)-sizeof(ResTable_entry))) {
5560        ALOGW("ResTable_entry at 0x%x is beyond type chunk data 0x%x",
5561                bestOffset, dtohl(bestType->header.size));
5562        return BAD_TYPE;
5563    }
5564    if ((bestOffset & 0x3) != 0) {
5565        ALOGW("ResTable_entry at 0x%x is not on an integer boundary", bestOffset);
5566        return BAD_TYPE;
5567    }
5568
5569    const ResTable_entry* const entry = reinterpret_cast<const ResTable_entry*>(
5570            reinterpret_cast<const uint8_t*>(bestType) + bestOffset);
5571    if (dtohs(entry->size) < sizeof(*entry)) {
5572        ALOGW("ResTable_entry size 0x%x is too small", dtohs(entry->size));
5573        return BAD_TYPE;
5574    }
5575
5576    if (outEntry != NULL) {
5577        outEntry->entry = entry;
5578        outEntry->config = bestConfig;
5579        outEntry->type = bestType;
5580        outEntry->specFlags = specFlags;
5581        outEntry->package = bestPackage;
5582        outEntry->typeStr = StringPoolRef(&bestPackage->typeStrings, actualTypeIndex - bestPackage->typeIdOffset);
5583        outEntry->keyStr = StringPoolRef(&bestPackage->keyStrings, dtohl(entry->key.index));
5584    }
5585    return NO_ERROR;
5586}
5587
5588status_t ResTable::parsePackage(const ResTable_package* const pkg,
5589                                const Header* const header)
5590{
5591    const uint8_t* base = (const uint8_t*)pkg;
5592    status_t err = validate_chunk(&pkg->header, sizeof(*pkg) - sizeof(pkg->typeIdOffset),
5593                                  header->dataEnd, "ResTable_package");
5594    if (err != NO_ERROR) {
5595        return (mError=err);
5596    }
5597
5598    const uint32_t pkgSize = dtohl(pkg->header.size);
5599
5600    if (dtohl(pkg->typeStrings) >= pkgSize) {
5601        ALOGW("ResTable_package type strings at 0x%x are past chunk size 0x%x.",
5602             dtohl(pkg->typeStrings), pkgSize);
5603        return (mError=BAD_TYPE);
5604    }
5605    if ((dtohl(pkg->typeStrings)&0x3) != 0) {
5606        ALOGW("ResTable_package type strings at 0x%x is not on an integer boundary.",
5607             dtohl(pkg->typeStrings));
5608        return (mError=BAD_TYPE);
5609    }
5610    if (dtohl(pkg->keyStrings) >= pkgSize) {
5611        ALOGW("ResTable_package key strings at 0x%x are past chunk size 0x%x.",
5612             dtohl(pkg->keyStrings), pkgSize);
5613        return (mError=BAD_TYPE);
5614    }
5615    if ((dtohl(pkg->keyStrings)&0x3) != 0) {
5616        ALOGW("ResTable_package key strings at 0x%x is not on an integer boundary.",
5617             dtohl(pkg->keyStrings));
5618        return (mError=BAD_TYPE);
5619    }
5620
5621    uint32_t id = dtohl(pkg->id);
5622    KeyedVector<uint8_t, IdmapEntries> idmapEntries;
5623
5624    if (header->resourceIDMap != NULL) {
5625        uint8_t targetPackageId = 0;
5626        status_t err = parseIdmap(header->resourceIDMap, header->resourceIDMapSize, &targetPackageId, &idmapEntries);
5627        if (err != NO_ERROR) {
5628            ALOGW("Overlay is broken");
5629            return (mError=err);
5630        }
5631        id = targetPackageId;
5632    }
5633
5634    if (id >= 256) {
5635        LOG_ALWAYS_FATAL("Package id out of range");
5636        return NO_ERROR;
5637    } else if (id == 0) {
5638        // This is a library so assign an ID
5639        id = mNextPackageId++;
5640    }
5641
5642    PackageGroup* group = NULL;
5643    Package* package = new Package(this, header, pkg);
5644    if (package == NULL) {
5645        return (mError=NO_MEMORY);
5646    }
5647
5648    err = package->typeStrings.setTo(base+dtohl(pkg->typeStrings),
5649                                   header->dataEnd-(base+dtohl(pkg->typeStrings)));
5650    if (err != NO_ERROR) {
5651        delete group;
5652        delete package;
5653        return (mError=err);
5654    }
5655
5656    err = package->keyStrings.setTo(base+dtohl(pkg->keyStrings),
5657                                  header->dataEnd-(base+dtohl(pkg->keyStrings)));
5658    if (err != NO_ERROR) {
5659        delete group;
5660        delete package;
5661        return (mError=err);
5662    }
5663
5664    size_t idx = mPackageMap[id];
5665    if (idx == 0) {
5666        idx = mPackageGroups.size() + 1;
5667
5668        char16_t tmpName[sizeof(pkg->name)/sizeof(pkg->name[0])];
5669        strcpy16_dtoh(tmpName, pkg->name, sizeof(pkg->name)/sizeof(pkg->name[0]));
5670        group = new PackageGroup(this, String16(tmpName), id);
5671        if (group == NULL) {
5672            delete package;
5673            return (mError=NO_MEMORY);
5674        }
5675
5676        err = mPackageGroups.add(group);
5677        if (err < NO_ERROR) {
5678            return (mError=err);
5679        }
5680
5681        mPackageMap[id] = static_cast<uint8_t>(idx);
5682
5683        // Find all packages that reference this package
5684        size_t N = mPackageGroups.size();
5685        for (size_t i = 0; i < N; i++) {
5686            mPackageGroups[i]->dynamicRefTable.addMapping(
5687                    group->name, static_cast<uint8_t>(group->id));
5688        }
5689    } else {
5690        group = mPackageGroups.itemAt(idx - 1);
5691        if (group == NULL) {
5692            return (mError=UNKNOWN_ERROR);
5693        }
5694    }
5695
5696    err = group->packages.add(package);
5697    if (err < NO_ERROR) {
5698        return (mError=err);
5699    }
5700
5701    // Iterate through all chunks.
5702    const ResChunk_header* chunk =
5703        (const ResChunk_header*)(((const uint8_t*)pkg)
5704                                 + dtohs(pkg->header.headerSize));
5705    const uint8_t* endPos = ((const uint8_t*)pkg) + dtohs(pkg->header.size);
5706    while (((const uint8_t*)chunk) <= (endPos-sizeof(ResChunk_header)) &&
5707           ((const uint8_t*)chunk) <= (endPos-dtohl(chunk->size))) {
5708        TABLE_NOISY(ALOGV("PackageChunk: type=0x%x, headerSize=0x%x, size=0x%x, pos=%p\n",
5709                         dtohs(chunk->type), dtohs(chunk->headerSize), dtohl(chunk->size),
5710                         (void*)(((const uint8_t*)chunk) - ((const uint8_t*)header->header))));
5711        const size_t csize = dtohl(chunk->size);
5712        const uint16_t ctype = dtohs(chunk->type);
5713        if (ctype == RES_TABLE_TYPE_SPEC_TYPE) {
5714            const ResTable_typeSpec* typeSpec = (const ResTable_typeSpec*)(chunk);
5715            err = validate_chunk(&typeSpec->header, sizeof(*typeSpec),
5716                                 endPos, "ResTable_typeSpec");
5717            if (err != NO_ERROR) {
5718                return (mError=err);
5719            }
5720
5721            const size_t typeSpecSize = dtohl(typeSpec->header.size);
5722            const size_t newEntryCount = dtohl(typeSpec->entryCount);
5723
5724            LOAD_TABLE_NOISY(printf("TypeSpec off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5725                                    (void*)(base-(const uint8_t*)chunk),
5726                                    dtohs(typeSpec->header.type),
5727                                    dtohs(typeSpec->header.headerSize),
5728                                    (void*)typeSpecSize));
5729            // look for block overrun or int overflow when multiplying by 4
5730            if ((dtohl(typeSpec->entryCount) > (INT32_MAX/sizeof(uint32_t))
5731                    || dtohs(typeSpec->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5732                    > typeSpecSize)) {
5733                ALOGW("ResTable_typeSpec entry index to %p extends beyond chunk end %p.",
5734                        (void*)(dtohs(typeSpec->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5735                        (void*)typeSpecSize);
5736                return (mError=BAD_TYPE);
5737            }
5738
5739            if (typeSpec->id == 0) {
5740                ALOGW("ResTable_type has an id of 0.");
5741                return (mError=BAD_TYPE);
5742            }
5743
5744            if (newEntryCount > 0) {
5745                uint8_t typeIndex = typeSpec->id - 1;
5746                ssize_t idmapIndex = idmapEntries.indexOfKey(typeSpec->id);
5747                if (idmapIndex >= 0) {
5748                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5749                }
5750
5751                TypeList& typeList = group->types.editItemAt(typeIndex);
5752                if (!typeList.isEmpty()) {
5753                    const Type* existingType = typeList[0];
5754                    if (existingType->entryCount != newEntryCount && idmapIndex < 0) {
5755                        ALOGW("ResTable_typeSpec entry count inconsistent: given %d, previously %d",
5756                                (int) newEntryCount, (int) existingType->entryCount);
5757                        // We should normally abort here, but some legacy apps declare
5758                        // resources in the 'android' package (old bug in AAPT).
5759                    }
5760                }
5761
5762                Type* t = new Type(header, package, newEntryCount);
5763                t->typeSpec = typeSpec;
5764                t->typeSpecFlags = (const uint32_t*)(
5765                        ((const uint8_t*)typeSpec) + dtohs(typeSpec->header.headerSize));
5766                if (idmapIndex >= 0) {
5767                    t->idmapEntries = idmapEntries[idmapIndex];
5768                }
5769                typeList.add(t);
5770                group->largestTypeId = max(group->largestTypeId, typeSpec->id);
5771            } else {
5772                ALOGV("Skipping empty ResTable_typeSpec for type %d", typeSpec->id);
5773            }
5774
5775        } else if (ctype == RES_TABLE_TYPE_TYPE) {
5776            const ResTable_type* type = (const ResTable_type*)(chunk);
5777            err = validate_chunk(&type->header, sizeof(*type)-sizeof(ResTable_config)+4,
5778                                 endPos, "ResTable_type");
5779            if (err != NO_ERROR) {
5780                return (mError=err);
5781            }
5782
5783            const uint32_t typeSize = dtohl(type->header.size);
5784            const size_t newEntryCount = dtohl(type->entryCount);
5785
5786            LOAD_TABLE_NOISY(printf("Type off %p: type=0x%x, headerSize=0x%x, size=%p\n",
5787                                    (void*)(base-(const uint8_t*)chunk),
5788                                    dtohs(type->header.type),
5789                                    dtohs(type->header.headerSize),
5790                                    (void*)typeSize));
5791            if (dtohs(type->header.headerSize)+(sizeof(uint32_t)*newEntryCount)
5792                    > typeSize) {
5793                ALOGW("ResTable_type entry index to %p extends beyond chunk end 0x%x.",
5794                        (void*)(dtohs(type->header.headerSize) + (sizeof(uint32_t)*newEntryCount)),
5795                        typeSize);
5796                return (mError=BAD_TYPE);
5797            }
5798
5799            if (newEntryCount != 0
5800                && dtohl(type->entriesStart) > (typeSize-sizeof(ResTable_entry))) {
5801                ALOGW("ResTable_type entriesStart at 0x%x extends beyond chunk end 0x%x.",
5802                     dtohl(type->entriesStart), typeSize);
5803                return (mError=BAD_TYPE);
5804            }
5805
5806            if (type->id == 0) {
5807                ALOGW("ResTable_type has an id of 0.");
5808                return (mError=BAD_TYPE);
5809            }
5810
5811            if (newEntryCount > 0) {
5812                uint8_t typeIndex = type->id - 1;
5813                ssize_t idmapIndex = idmapEntries.indexOfKey(type->id);
5814                if (idmapIndex >= 0) {
5815                    typeIndex = idmapEntries[idmapIndex].targetTypeId() - 1;
5816                }
5817
5818                TypeList& typeList = group->types.editItemAt(typeIndex);
5819                if (typeList.isEmpty()) {
5820                    ALOGE("No TypeSpec for type %d", type->id);
5821                    return (mError=BAD_TYPE);
5822                }
5823
5824                Type* t = typeList.editItemAt(typeList.size() - 1);
5825                if (newEntryCount != t->entryCount) {
5826                    ALOGE("ResTable_type entry count inconsistent: given %d, previously %d",
5827                        (int)newEntryCount, (int)t->entryCount);
5828                    return (mError=BAD_TYPE);
5829                }
5830
5831                if (t->package != package) {
5832                    ALOGE("No TypeSpec for type %d", type->id);
5833                    return (mError=BAD_TYPE);
5834                }
5835
5836                t->configs.add(type);
5837
5838                TABLE_GETENTRY(
5839                    ResTable_config thisConfig;
5840                    thisConfig.copyFromDtoH(type->config);
5841                    ALOGI("Adding config to type %d: %s\n",
5842                          type->id, thisConfig.toString().string()));
5843            } else {
5844                ALOGV("Skipping empty ResTable_type for type %d", type->id);
5845            }
5846
5847        } else if (ctype == RES_TABLE_LIBRARY_TYPE) {
5848            if (group->dynamicRefTable.entries().size() == 0) {
5849                status_t err = group->dynamicRefTable.load((const ResTable_lib_header*) chunk);
5850                if (err != NO_ERROR) {
5851                    return (mError=err);
5852                }
5853
5854                // Fill in the reference table with the entries we already know about.
5855                size_t N = mPackageGroups.size();
5856                for (size_t i = 0; i < N; i++) {
5857                    group->dynamicRefTable.addMapping(mPackageGroups[i]->name, mPackageGroups[i]->id);
5858                }
5859            } else {
5860                ALOGW("Found multiple library tables, ignoring...");
5861            }
5862        } else {
5863            status_t err = validate_chunk(chunk, sizeof(ResChunk_header),
5864                                          endPos, "ResTable_package:unknown");
5865            if (err != NO_ERROR) {
5866                return (mError=err);
5867            }
5868        }
5869        chunk = (const ResChunk_header*)
5870            (((const uint8_t*)chunk) + csize);
5871    }
5872
5873    return NO_ERROR;
5874}
5875
5876DynamicRefTable::DynamicRefTable(uint8_t packageId)
5877    : mAssignedPackageId(packageId)
5878{
5879    memset(mLookupTable, 0, sizeof(mLookupTable));
5880
5881    // Reserved package ids
5882    mLookupTable[APP_PACKAGE_ID] = APP_PACKAGE_ID;
5883    mLookupTable[SYS_PACKAGE_ID] = SYS_PACKAGE_ID;
5884}
5885
5886status_t DynamicRefTable::load(const ResTable_lib_header* const header)
5887{
5888    const uint32_t entryCount = dtohl(header->count);
5889    const uint32_t sizeOfEntries = sizeof(ResTable_lib_entry) * entryCount;
5890    const uint32_t expectedSize = dtohl(header->header.size) - dtohl(header->header.headerSize);
5891    if (sizeOfEntries > expectedSize) {
5892        ALOGE("ResTable_lib_header size %u is too small to fit %u entries (x %u).",
5893                expectedSize, entryCount, (uint32_t)sizeof(ResTable_lib_entry));
5894        return UNKNOWN_ERROR;
5895    }
5896
5897    const ResTable_lib_entry* entry = (const ResTable_lib_entry*)(((uint8_t*) header) +
5898            dtohl(header->header.headerSize));
5899    for (uint32_t entryIndex = 0; entryIndex < entryCount; entryIndex++) {
5900        uint32_t packageId = dtohl(entry->packageId);
5901        char16_t tmpName[sizeof(entry->packageName) / sizeof(char16_t)];
5902        strcpy16_dtoh(tmpName, entry->packageName, sizeof(entry->packageName) / sizeof(char16_t));
5903        LIB_NOISY(ALOGV("Found lib entry %s with id %d\n", String8(tmpName).string(),
5904                dtohl(entry->packageId)));
5905        if (packageId >= 256) {
5906            ALOGE("Bad package id 0x%08x", packageId);
5907            return UNKNOWN_ERROR;
5908        }
5909        mEntries.replaceValueFor(String16(tmpName), (uint8_t) packageId);
5910        entry = entry + 1;
5911    }
5912    return NO_ERROR;
5913}
5914
5915status_t DynamicRefTable::addMappings(const DynamicRefTable& other) {
5916    if (mAssignedPackageId != other.mAssignedPackageId) {
5917        return UNKNOWN_ERROR;
5918    }
5919
5920    const size_t entryCount = other.mEntries.size();
5921    for (size_t i = 0; i < entryCount; i++) {
5922        ssize_t index = mEntries.indexOfKey(other.mEntries.keyAt(i));
5923        if (index < 0) {
5924            mEntries.add(other.mEntries.keyAt(i), other.mEntries[i]);
5925        } else {
5926            if (other.mEntries[i] != mEntries[index]) {
5927                return UNKNOWN_ERROR;
5928            }
5929        }
5930    }
5931
5932    // Merge the lookup table. No entry can conflict
5933    // (value of 0 means not set).
5934    for (size_t i = 0; i < 256; i++) {
5935        if (mLookupTable[i] != other.mLookupTable[i]) {
5936            if (mLookupTable[i] == 0) {
5937                mLookupTable[i] = other.mLookupTable[i];
5938            } else if (other.mLookupTable[i] != 0) {
5939                return UNKNOWN_ERROR;
5940            }
5941        }
5942    }
5943    return NO_ERROR;
5944}
5945
5946status_t DynamicRefTable::addMapping(const String16& packageName, uint8_t packageId)
5947{
5948    ssize_t index = mEntries.indexOfKey(packageName);
5949    if (index < 0) {
5950        return UNKNOWN_ERROR;
5951    }
5952    mLookupTable[mEntries.valueAt(index)] = packageId;
5953    return NO_ERROR;
5954}
5955
5956status_t DynamicRefTable::lookupResourceId(uint32_t* resId) const {
5957    uint32_t res = *resId;
5958    size_t packageId = Res_GETPACKAGE(res) + 1;
5959
5960    if (packageId == APP_PACKAGE_ID) {
5961        // No lookup needs to be done, app package IDs are absolute.
5962        return NO_ERROR;
5963    }
5964
5965    if (packageId == 0) {
5966        // The package ID is 0x00. That means that a shared library is accessing
5967        // its own local resource, so we fix up the resource with the calling
5968        // package ID.
5969        *resId |= ((uint32_t) mAssignedPackageId) << 24;
5970        return NO_ERROR;
5971    }
5972
5973    // Do a proper lookup.
5974    uint8_t translatedId = mLookupTable[packageId];
5975    if (translatedId == 0) {
5976        ALOGE("DynamicRefTable(0x%02x): No mapping for build-time package ID 0x%02x.",
5977                (uint8_t)mAssignedPackageId, (uint8_t)packageId);
5978        for (size_t i = 0; i < 256; i++) {
5979            if (mLookupTable[i] != 0) {
5980                ALOGE("e[0x%02x] -> 0x%02x", (uint8_t)i, mLookupTable[i]);
5981            }
5982        }
5983        return UNKNOWN_ERROR;
5984    }
5985
5986    *resId = (res & 0x00ffffff) | (((uint32_t) translatedId) << 24);
5987    return NO_ERROR;
5988}
5989
5990status_t DynamicRefTable::lookupResourceValue(Res_value* value) const {
5991    if (value->dataType != Res_value::TYPE_DYNAMIC_REFERENCE) {
5992        return NO_ERROR;
5993    }
5994
5995    status_t err = lookupResourceId(&value->data);
5996    if (err != NO_ERROR) {
5997        return err;
5998    }
5999
6000    value->dataType = Res_value::TYPE_REFERENCE;
6001    return NO_ERROR;
6002}
6003
6004struct IdmapTypeMap {
6005    ssize_t overlayTypeId;
6006    size_t entryOffset;
6007    Vector<uint32_t> entryMap;
6008};
6009
6010status_t ResTable::createIdmap(const ResTable& overlay,
6011        uint32_t targetCrc, uint32_t overlayCrc,
6012        const char* targetPath, const char* overlayPath,
6013        void** outData, size_t* outSize) const
6014{
6015    // see README for details on the format of map
6016    if (mPackageGroups.size() == 0) {
6017        ALOGW("idmap: target package has no package groups, cannot create idmap\n");
6018        return UNKNOWN_ERROR;
6019    }
6020
6021    if (mPackageGroups[0]->packages.size() == 0) {
6022        ALOGW("idmap: target package has no packages in its first package group, "
6023                "cannot create idmap\n");
6024        return UNKNOWN_ERROR;
6025    }
6026
6027    KeyedVector<uint8_t, IdmapTypeMap> map;
6028
6029    // overlaid packages are assumed to contain only one package group
6030    const PackageGroup* pg = mPackageGroups[0];
6031
6032    // starting size is header
6033    *outSize = ResTable::IDMAP_HEADER_SIZE_BYTES;
6034
6035    // target package id and number of types in map
6036    *outSize += 2 * sizeof(uint16_t);
6037
6038    // overlay packages are assumed to contain only one package group
6039    const ResTable_package* overlayPackageStruct = overlay.mPackageGroups[0]->packages[0]->package;
6040    char16_t tmpName[sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0])];
6041    strcpy16_dtoh(tmpName, overlayPackageStruct->name, sizeof(overlayPackageStruct->name)/sizeof(overlayPackageStruct->name[0]));
6042    const String16 overlayPackage(tmpName);
6043
6044    for (size_t typeIndex = 0; typeIndex < pg->types.size(); ++typeIndex) {
6045        const TypeList& typeList = pg->types[typeIndex];
6046        if (typeList.isEmpty()) {
6047            continue;
6048        }
6049
6050        const Type* typeConfigs = typeList[0];
6051
6052        IdmapTypeMap typeMap;
6053        typeMap.overlayTypeId = -1;
6054        typeMap.entryOffset = 0;
6055
6056        for (size_t entryIndex = 0; entryIndex < typeConfigs->entryCount; ++entryIndex) {
6057            uint32_t resID = Res_MAKEID(pg->id - 1, typeIndex, entryIndex);
6058            resource_name resName;
6059            if (!this->getResourceName(resID, false, &resName)) {
6060                if (typeMap.entryMap.isEmpty()) {
6061                    typeMap.entryOffset++;
6062                }
6063                continue;
6064            }
6065
6066            const String16 overlayType(resName.type, resName.typeLen);
6067            const String16 overlayName(resName.name, resName.nameLen);
6068            uint32_t overlayResID = overlay.identifierForName(overlayName.string(),
6069                                                              overlayName.size(),
6070                                                              overlayType.string(),
6071                                                              overlayType.size(),
6072                                                              overlayPackage.string(),
6073                                                              overlayPackage.size());
6074            if (overlayResID == 0) {
6075                if (typeMap.entryMap.isEmpty()) {
6076                    typeMap.entryOffset++;
6077                }
6078                continue;
6079            }
6080
6081            if (typeMap.overlayTypeId == -1) {
6082                typeMap.overlayTypeId = Res_GETTYPE(overlayResID) + 1;
6083            }
6084
6085            if (Res_GETTYPE(overlayResID) + 1 != static_cast<size_t>(typeMap.overlayTypeId)) {
6086                ALOGE("idmap: can't mix type ids in entry map. Resource 0x%08x maps to 0x%08x"
6087                        " but entries should map to resources of type %02x",
6088                        resID, overlayResID, typeMap.overlayTypeId);
6089                return BAD_TYPE;
6090            }
6091
6092            if (typeMap.entryOffset + typeMap.entryMap.size() < entryIndex) {
6093                // Resize to accomodate this entry and the 0's in between.
6094                if (typeMap.entryMap.resize((entryIndex - typeMap.entryOffset) + 1) < 0) {
6095                    return NO_MEMORY;
6096                }
6097                typeMap.entryMap.editTop() = Res_GETENTRY(overlayResID);
6098            } else {
6099                typeMap.entryMap.add(Res_GETENTRY(overlayResID));
6100            }
6101        }
6102
6103        if (!typeMap.entryMap.isEmpty()) {
6104            if (map.add(static_cast<uint8_t>(typeIndex), typeMap) < 0) {
6105                return NO_MEMORY;
6106            }
6107            *outSize += (4 * sizeof(uint16_t)) + (typeMap.entryMap.size() * sizeof(uint32_t));
6108        }
6109    }
6110
6111    if (map.isEmpty()) {
6112        ALOGW("idmap: no resources in overlay package present in base package");
6113        return UNKNOWN_ERROR;
6114    }
6115
6116    if ((*outData = malloc(*outSize)) == NULL) {
6117        return NO_MEMORY;
6118    }
6119
6120    uint32_t* data = (uint32_t*)*outData;
6121    *data++ = htodl(IDMAP_MAGIC);
6122    *data++ = htodl(IDMAP_CURRENT_VERSION);
6123    *data++ = htodl(targetCrc);
6124    *data++ = htodl(overlayCrc);
6125    const char* paths[] = { targetPath, overlayPath };
6126    for (int j = 0; j < 2; ++j) {
6127        char* p = (char*)data;
6128        const char* path = paths[j];
6129        const size_t I = strlen(path);
6130        if (I > 255) {
6131            ALOGV("path exceeds expected 255 characters: %s\n", path);
6132            return UNKNOWN_ERROR;
6133        }
6134        for (size_t i = 0; i < 256; ++i) {
6135            *p++ = i < I ? path[i] : '\0';
6136        }
6137        data += 256 / sizeof(uint32_t);
6138    }
6139    const size_t mapSize = map.size();
6140    uint16_t* typeData = reinterpret_cast<uint16_t*>(data);
6141    *typeData++ = htods(pg->id);
6142    *typeData++ = htods(mapSize);
6143    for (size_t i = 0; i < mapSize; ++i) {
6144        uint8_t targetTypeId = map.keyAt(i);
6145        const IdmapTypeMap& typeMap = map[i];
6146        *typeData++ = htods(targetTypeId + 1);
6147        *typeData++ = htods(typeMap.overlayTypeId);
6148        *typeData++ = htods(typeMap.entryMap.size());
6149        *typeData++ = htods(typeMap.entryOffset);
6150
6151        const size_t entryCount = typeMap.entryMap.size();
6152        uint32_t* entries = reinterpret_cast<uint32_t*>(typeData);
6153        for (size_t j = 0; j < entryCount; j++) {
6154            entries[j] = htodl(typeMap.entryMap[j]);
6155        }
6156        typeData += entryCount * 2;
6157    }
6158
6159    return NO_ERROR;
6160}
6161
6162bool ResTable::getIdmapInfo(const void* idmap, size_t sizeBytes,
6163                            uint32_t* pVersion,
6164                            uint32_t* pTargetCrc, uint32_t* pOverlayCrc,
6165                            String8* pTargetPath, String8* pOverlayPath)
6166{
6167    const uint32_t* map = (const uint32_t*)idmap;
6168    if (!assertIdmapHeader(map, sizeBytes)) {
6169        return false;
6170    }
6171    if (pVersion) {
6172        *pVersion = dtohl(map[1]);
6173    }
6174    if (pTargetCrc) {
6175        *pTargetCrc = dtohl(map[2]);
6176    }
6177    if (pOverlayCrc) {
6178        *pOverlayCrc = dtohl(map[3]);
6179    }
6180    if (pTargetPath) {
6181        pTargetPath->setTo(reinterpret_cast<const char*>(map + 4));
6182    }
6183    if (pOverlayPath) {
6184        pOverlayPath->setTo(reinterpret_cast<const char*>(map + 4 + 256 / sizeof(uint32_t)));
6185    }
6186    return true;
6187}
6188
6189
6190#define CHAR16_TO_CSTR(c16, len) (String8(String16(c16,len)).string())
6191
6192#define CHAR16_ARRAY_EQ(constant, var, len) \
6193        ((len == (sizeof(constant)/sizeof(constant[0]))) && (0 == memcmp((var), (constant), (len))))
6194
6195static void print_complex(uint32_t complex, bool isFraction)
6196{
6197    const float MANTISSA_MULT =
6198        1.0f / (1<<Res_value::COMPLEX_MANTISSA_SHIFT);
6199    const float RADIX_MULTS[] = {
6200        1.0f*MANTISSA_MULT, 1.0f/(1<<7)*MANTISSA_MULT,
6201        1.0f/(1<<15)*MANTISSA_MULT, 1.0f/(1<<23)*MANTISSA_MULT
6202    };
6203
6204    float value = (complex&(Res_value::COMPLEX_MANTISSA_MASK
6205                   <<Res_value::COMPLEX_MANTISSA_SHIFT))
6206            * RADIX_MULTS[(complex>>Res_value::COMPLEX_RADIX_SHIFT)
6207                            & Res_value::COMPLEX_RADIX_MASK];
6208    printf("%f", value);
6209
6210    if (!isFraction) {
6211        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6212            case Res_value::COMPLEX_UNIT_PX: printf("px"); break;
6213            case Res_value::COMPLEX_UNIT_DIP: printf("dp"); break;
6214            case Res_value::COMPLEX_UNIT_SP: printf("sp"); break;
6215            case Res_value::COMPLEX_UNIT_PT: printf("pt"); break;
6216            case Res_value::COMPLEX_UNIT_IN: printf("in"); break;
6217            case Res_value::COMPLEX_UNIT_MM: printf("mm"); break;
6218            default: printf(" (unknown unit)"); break;
6219        }
6220    } else {
6221        switch ((complex>>Res_value::COMPLEX_UNIT_SHIFT)&Res_value::COMPLEX_UNIT_MASK) {
6222            case Res_value::COMPLEX_UNIT_FRACTION: printf("%%"); break;
6223            case Res_value::COMPLEX_UNIT_FRACTION_PARENT: printf("%%p"); break;
6224            default: printf(" (unknown unit)"); break;
6225        }
6226    }
6227}
6228
6229// Normalize a string for output
6230String8 ResTable::normalizeForOutput( const char *input )
6231{
6232    String8 ret;
6233    char buff[2];
6234    buff[1] = '\0';
6235
6236    while (*input != '\0') {
6237        switch (*input) {
6238            // All interesting characters are in the ASCII zone, so we are making our own lives
6239            // easier by scanning the string one byte at a time.
6240        case '\\':
6241            ret += "\\\\";
6242            break;
6243        case '\n':
6244            ret += "\\n";
6245            break;
6246        case '"':
6247            ret += "\\\"";
6248            break;
6249        default:
6250            buff[0] = *input;
6251            ret += buff;
6252            break;
6253        }
6254
6255        input++;
6256    }
6257
6258    return ret;
6259}
6260
6261void ResTable::print_value(const Package* pkg, const Res_value& value) const
6262{
6263    if (value.dataType == Res_value::TYPE_NULL) {
6264        if (value.data == Res_value::DATA_NULL_UNDEFINED) {
6265            printf("(null)\n");
6266        } else if (value.data == Res_value::DATA_NULL_EMPTY) {
6267            printf("(null empty)\n");
6268        } else {
6269            // This should never happen.
6270            printf("(null) 0x%08x\n", value.data);
6271        }
6272    } else if (value.dataType == Res_value::TYPE_REFERENCE) {
6273        printf("(reference) 0x%08x\n", value.data);
6274    } else if (value.dataType == Res_value::TYPE_DYNAMIC_REFERENCE) {
6275        printf("(dynamic reference) 0x%08x\n", value.data);
6276    } else if (value.dataType == Res_value::TYPE_ATTRIBUTE) {
6277        printf("(attribute) 0x%08x\n", value.data);
6278    } else if (value.dataType == Res_value::TYPE_STRING) {
6279        size_t len;
6280        const char* str8 = pkg->header->values.string8At(
6281                value.data, &len);
6282        if (str8 != NULL) {
6283            printf("(string8) \"%s\"\n", normalizeForOutput(str8).string());
6284        } else {
6285            const char16_t* str16 = pkg->header->values.stringAt(
6286                    value.data, &len);
6287            if (str16 != NULL) {
6288                printf("(string16) \"%s\"\n",
6289                    normalizeForOutput(String8(str16, len).string()).string());
6290            } else {
6291                printf("(string) null\n");
6292            }
6293        }
6294    } else if (value.dataType == Res_value::TYPE_FLOAT) {
6295        printf("(float) %g\n", *(const float*)&value.data);
6296    } else if (value.dataType == Res_value::TYPE_DIMENSION) {
6297        printf("(dimension) ");
6298        print_complex(value.data, false);
6299        printf("\n");
6300    } else if (value.dataType == Res_value::TYPE_FRACTION) {
6301        printf("(fraction) ");
6302        print_complex(value.data, true);
6303        printf("\n");
6304    } else if (value.dataType >= Res_value::TYPE_FIRST_COLOR_INT
6305            || value.dataType <= Res_value::TYPE_LAST_COLOR_INT) {
6306        printf("(color) #%08x\n", value.data);
6307    } else if (value.dataType == Res_value::TYPE_INT_BOOLEAN) {
6308        printf("(boolean) %s\n", value.data ? "true" : "false");
6309    } else if (value.dataType >= Res_value::TYPE_FIRST_INT
6310            || value.dataType <= Res_value::TYPE_LAST_INT) {
6311        printf("(int) 0x%08x or %d\n", value.data, value.data);
6312    } else {
6313        printf("(unknown type) t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)\n",
6314               (int)value.dataType, (int)value.data,
6315               (int)value.size, (int)value.res0);
6316    }
6317}
6318
6319void ResTable::print(bool inclValues) const
6320{
6321    if (mError != 0) {
6322        printf("mError=0x%x (%s)\n", mError, strerror(mError));
6323    }
6324    size_t pgCount = mPackageGroups.size();
6325    printf("Package Groups (%d)\n", (int)pgCount);
6326    for (size_t pgIndex=0; pgIndex<pgCount; pgIndex++) {
6327        const PackageGroup* pg = mPackageGroups[pgIndex];
6328        printf("Package Group %d id=0x%02x packageCount=%d name=%s\n",
6329                (int)pgIndex, pg->id, (int)pg->packages.size(),
6330                String8(pg->name).string());
6331
6332        const KeyedVector<String16, uint8_t>& refEntries = pg->dynamicRefTable.entries();
6333        const size_t refEntryCount = refEntries.size();
6334        if (refEntryCount > 0) {
6335            printf("  DynamicRefTable entryCount=%d:\n", (int) refEntryCount);
6336            for (size_t refIndex = 0; refIndex < refEntryCount; refIndex++) {
6337                printf("    0x%02x -> %s\n",
6338                        refEntries.valueAt(refIndex),
6339                        String8(refEntries.keyAt(refIndex)).string());
6340            }
6341            printf("\n");
6342        }
6343
6344        int packageId = pg->id;
6345        size_t pkgCount = pg->packages.size();
6346        for (size_t pkgIndex=0; pkgIndex<pkgCount; pkgIndex++) {
6347            const Package* pkg = pg->packages[pkgIndex];
6348            // Use a package's real ID, since the ID may have been assigned
6349            // if this package is a shared library.
6350            packageId = pkg->package->id;
6351            char16_t tmpName[sizeof(pkg->package->name)/sizeof(pkg->package->name[0])];
6352            strcpy16_dtoh(tmpName, pkg->package->name, sizeof(pkg->package->name)/sizeof(pkg->package->name[0]));
6353            printf("  Package %d id=0x%02x name=%s\n", (int)pkgIndex,
6354                    pkg->package->id, String8(tmpName).string());
6355        }
6356
6357        for (size_t typeIndex=0; typeIndex < pg->types.size(); typeIndex++) {
6358            const TypeList& typeList = pg->types[typeIndex];
6359            if (typeList.isEmpty()) {
6360                continue;
6361            }
6362            const Type* typeConfigs = typeList[0];
6363            const size_t NTC = typeConfigs->configs.size();
6364            printf("    type %d configCount=%d entryCount=%d\n",
6365                   (int)typeIndex, (int)NTC, (int)typeConfigs->entryCount);
6366            if (typeConfigs->typeSpecFlags != NULL) {
6367                for (size_t entryIndex=0; entryIndex<typeConfigs->entryCount; entryIndex++) {
6368                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6369                                | (0x00ff0000 & ((typeIndex+1)<<16))
6370                                | (0x0000ffff & (entryIndex));
6371                    // Since we are creating resID without actually
6372                    // iterating over them, we have no idea which is a
6373                    // dynamic reference. We must check.
6374                    if (packageId == 0) {
6375                        pg->dynamicRefTable.lookupResourceId(&resID);
6376                    }
6377
6378                    resource_name resName;
6379                    if (this->getResourceName(resID, true, &resName)) {
6380                        String8 type8;
6381                        String8 name8;
6382                        if (resName.type8 != NULL) {
6383                            type8 = String8(resName.type8, resName.typeLen);
6384                        } else {
6385                            type8 = String8(resName.type, resName.typeLen);
6386                        }
6387                        if (resName.name8 != NULL) {
6388                            name8 = String8(resName.name8, resName.nameLen);
6389                        } else {
6390                            name8 = String8(resName.name, resName.nameLen);
6391                        }
6392                        printf("      spec resource 0x%08x %s:%s/%s: flags=0x%08x\n",
6393                            resID,
6394                            CHAR16_TO_CSTR(resName.package, resName.packageLen),
6395                            type8.string(), name8.string(),
6396                            dtohl(typeConfigs->typeSpecFlags[entryIndex]));
6397                    } else {
6398                        printf("      INVALID TYPE CONFIG FOR RESOURCE 0x%08x\n", resID);
6399                    }
6400                }
6401            }
6402            for (size_t configIndex=0; configIndex<NTC; configIndex++) {
6403                const ResTable_type* type = typeConfigs->configs[configIndex];
6404                if ((((uint64_t)type)&0x3) != 0) {
6405                    printf("      NON-INTEGER ResTable_type ADDRESS: %p\n", type);
6406                    continue;
6407                }
6408                String8 configStr = type->config.toString();
6409                printf("      config %s:\n", configStr.size() > 0
6410                        ? configStr.string() : "(default)");
6411                size_t entryCount = dtohl(type->entryCount);
6412                uint32_t entriesStart = dtohl(type->entriesStart);
6413                if ((entriesStart&0x3) != 0) {
6414                    printf("      NON-INTEGER ResTable_type entriesStart OFFSET: 0x%x\n", entriesStart);
6415                    continue;
6416                }
6417                uint32_t typeSize = dtohl(type->header.size);
6418                if ((typeSize&0x3) != 0) {
6419                    printf("      NON-INTEGER ResTable_type header.size: 0x%x\n", typeSize);
6420                    continue;
6421                }
6422                for (size_t entryIndex=0; entryIndex<entryCount; entryIndex++) {
6423
6424                    const uint8_t* const end = ((const uint8_t*)type)
6425                        + dtohl(type->header.size);
6426                    const uint32_t* const eindex = (const uint32_t*)
6427                        (((const uint8_t*)type) + dtohs(type->header.headerSize));
6428
6429                    uint32_t thisOffset = dtohl(eindex[entryIndex]);
6430                    if (thisOffset == ResTable_type::NO_ENTRY) {
6431                        continue;
6432                    }
6433
6434                    uint32_t resID = (0xff000000 & ((packageId)<<24))
6435                                | (0x00ff0000 & ((typeIndex+1)<<16))
6436                                | (0x0000ffff & (entryIndex));
6437                    if (packageId == 0) {
6438                        pg->dynamicRefTable.lookupResourceId(&resID);
6439                    }
6440                    resource_name resName;
6441                    if (this->getResourceName(resID, true, &resName)) {
6442                        String8 type8;
6443                        String8 name8;
6444                        if (resName.type8 != NULL) {
6445                            type8 = String8(resName.type8, resName.typeLen);
6446                        } else {
6447                            type8 = String8(resName.type, resName.typeLen);
6448                        }
6449                        if (resName.name8 != NULL) {
6450                            name8 = String8(resName.name8, resName.nameLen);
6451                        } else {
6452                            name8 = String8(resName.name, resName.nameLen);
6453                        }
6454                        printf("        resource 0x%08x %s:%s/%s: ", resID,
6455                                CHAR16_TO_CSTR(resName.package, resName.packageLen),
6456                                type8.string(), name8.string());
6457                    } else {
6458                        printf("        INVALID RESOURCE 0x%08x: ", resID);
6459                    }
6460                    if ((thisOffset&0x3) != 0) {
6461                        printf("NON-INTEGER OFFSET: 0x%x\n", thisOffset);
6462                        continue;
6463                    }
6464                    if ((thisOffset+sizeof(ResTable_entry)) > typeSize) {
6465                        printf("OFFSET OUT OF BOUNDS: 0x%x+0x%x (size is 0x%x)\n",
6466                               entriesStart, thisOffset, typeSize);
6467                        continue;
6468                    }
6469
6470                    const ResTable_entry* ent = (const ResTable_entry*)
6471                        (((const uint8_t*)type) + entriesStart + thisOffset);
6472                    if (((entriesStart + thisOffset)&0x3) != 0) {
6473                        printf("NON-INTEGER ResTable_entry OFFSET: 0x%x\n",
6474                             (entriesStart + thisOffset));
6475                        continue;
6476                    }
6477
6478                    uintptr_t esize = dtohs(ent->size);
6479                    if ((esize&0x3) != 0) {
6480                        printf("NON-INTEGER ResTable_entry SIZE: %p\n", (void *)esize);
6481                        continue;
6482                    }
6483                    if ((thisOffset+esize) > typeSize) {
6484                        printf("ResTable_entry OUT OF BOUNDS: 0x%x+0x%x+%p (size is 0x%x)\n",
6485                               entriesStart, thisOffset, (void *)esize, typeSize);
6486                        continue;
6487                    }
6488
6489                    const Res_value* valuePtr = NULL;
6490                    const ResTable_map_entry* bagPtr = NULL;
6491                    Res_value value;
6492                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_COMPLEX) != 0) {
6493                        printf("<bag>");
6494                        bagPtr = (const ResTable_map_entry*)ent;
6495                    } else {
6496                        valuePtr = (const Res_value*)
6497                            (((const uint8_t*)ent) + esize);
6498                        value.copyFrom_dtoh(*valuePtr);
6499                        printf("t=0x%02x d=0x%08x (s=0x%04x r=0x%02x)",
6500                               (int)value.dataType, (int)value.data,
6501                               (int)value.size, (int)value.res0);
6502                    }
6503
6504                    if ((dtohs(ent->flags)&ResTable_entry::FLAG_PUBLIC) != 0) {
6505                        printf(" (PUBLIC)");
6506                    }
6507                    printf("\n");
6508
6509                    if (inclValues) {
6510                        if (valuePtr != NULL) {
6511                            printf("          ");
6512                            print_value(typeConfigs->package, value);
6513                        } else if (bagPtr != NULL) {
6514                            const int N = dtohl(bagPtr->count);
6515                            const uint8_t* baseMapPtr = (const uint8_t*)ent;
6516                            size_t mapOffset = esize;
6517                            const ResTable_map* mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6518                            const uint32_t parent = dtohl(bagPtr->parent.ident);
6519                            uint32_t resolvedParent = parent;
6520                            if (Res_GETPACKAGE(resolvedParent) + 1 == 0) {
6521                                status_t err = pg->dynamicRefTable.lookupResourceId(&resolvedParent);
6522                                if (err != NO_ERROR) {
6523                                    resolvedParent = 0;
6524                                }
6525                            }
6526                            printf("          Parent=0x%08x(Resolved=0x%08x), Count=%d\n",
6527                                    parent, resolvedParent, N);
6528                            for (int i=0; i<N && mapOffset < (typeSize-sizeof(ResTable_map)); i++) {
6529                                printf("          #%i (Key=0x%08x): ",
6530                                    i, dtohl(mapPtr->name.ident));
6531                                value.copyFrom_dtoh(mapPtr->value);
6532                                print_value(typeConfigs->package, value);
6533                                const size_t size = dtohs(mapPtr->value.size);
6534                                mapOffset += size + sizeof(*mapPtr)-sizeof(mapPtr->value);
6535                                mapPtr = (ResTable_map*)(baseMapPtr+mapOffset);
6536                            }
6537                        }
6538                    }
6539                }
6540            }
6541        }
6542    }
6543}
6544
6545}   // namespace android
6546