1/*
2**********************************************************************
3*   Copyright (C) 2010-2012, International Business Machines
4*   Corporation and others.  All Rights Reserved.
5**********************************************************************
6*   file name:  ucnv_ct.c
7*   encoding:   US-ASCII
8*   tab size:   8 (not used)
9*   indentation:4
10*
11*   created on: 2010Dec09
12*   created by: Michael Ow
13*/
14
15#include "unicode/utypes.h"
16
17#if !UCONFIG_NO_CONVERSION && !UCONFIG_NO_LEGACY_CONVERSION
18
19#include "unicode/ucnv.h"
20#include "unicode/uset.h"
21#include "unicode/ucnv_err.h"
22#include "unicode/ucnv_cb.h"
23#include "unicode/utf16.h"
24#include "ucnv_imp.h"
25#include "ucnv_bld.h"
26#include "ucnv_cnv.h"
27#include "ucnvmbcs.h"
28#include "cstring.h"
29#include "cmemory.h"
30
31#define LENGTHOF(array) (int32_t)(sizeof(array)/sizeof((array)[0]))
32
33typedef enum {
34    INVALID = -2,
35    DO_SEARCH = -1,
36
37    COMPOUND_TEXT_SINGLE_0 = 0,
38    COMPOUND_TEXT_SINGLE_1 = 1,
39    COMPOUND_TEXT_SINGLE_2 = 2,
40    COMPOUND_TEXT_SINGLE_3 = 3,
41
42    COMPOUND_TEXT_DOUBLE_1 = 4,
43    COMPOUND_TEXT_DOUBLE_2 = 5,
44    COMPOUND_TEXT_DOUBLE_3 = 6,
45    COMPOUND_TEXT_DOUBLE_4 = 7,
46    COMPOUND_TEXT_DOUBLE_5 = 8,
47    COMPOUND_TEXT_DOUBLE_6 = 9,
48    COMPOUND_TEXT_DOUBLE_7 = 10,
49
50    COMPOUND_TEXT_TRIPLE_DOUBLE = 11,
51
52    IBM_915 = 12,
53    IBM_916 = 13,
54    IBM_914 = 14,
55    IBM_874 = 15,
56    IBM_912 = 16,
57    IBM_913 = 17,
58    ISO_8859_14 = 18,
59    IBM_923 = 19,
60    NUM_OF_CONVERTERS = 20
61} COMPOUND_TEXT_CONVERTERS;
62
63#define SEARCH_LENGTH 12
64
65static const uint8_t escSeqCompoundText[NUM_OF_CONVERTERS][5] = {
66    /* Single */
67    { 0x1B, 0x2D, 0x41, 0, 0 },
68    { 0x1B, 0x2D, 0x4D, 0, 0 },
69    { 0x1B, 0x2D, 0x46, 0, 0 },
70    { 0x1B, 0x2D, 0x47, 0, 0 },
71
72    /* Double */
73    { 0x1B, 0x24, 0x29, 0x41, 0 },
74    { 0x1B, 0x24, 0x29, 0x42, 0 },
75    { 0x1B, 0x24, 0x29, 0x43, 0 },
76    { 0x1B, 0x24, 0x29, 0x44, 0 },
77    { 0x1B, 0x24, 0x29, 0x47, 0 },
78    { 0x1B, 0x24, 0x29, 0x48, 0 },
79    { 0x1B, 0x24, 0x29, 0x49, 0 },
80
81    /* Triple/Double */
82    { 0x1B, 0x25, 0x47, 0, 0 },
83
84    /*IBM-915*/
85    { 0x1B, 0x2D, 0x4C, 0, 0 },
86    /*IBM-916*/
87    { 0x1B, 0x2D, 0x48, 0, 0 },
88    /*IBM-914*/
89    { 0x1B, 0x2D, 0x44, 0, 0 },
90    /*IBM-874*/
91    { 0x1B, 0x2D, 0x54, 0, 0 },
92    /*IBM-912*/
93    { 0x1B, 0x2D, 0x42, 0, 0 },
94    /* IBM-913 */
95    { 0x1B, 0x2D, 0x43, 0, 0 },
96    /* ISO-8859_14 */
97    { 0x1B, 0x2D, 0x5F, 0, 0 },
98    /* IBM-923 */
99    { 0x1B, 0x2D, 0x62, 0, 0 },
100};
101
102#define ESC_START 0x1B
103
104#define isASCIIRange(codepoint) \
105        ((codepoint == 0x0000) || (codepoint == 0x0009) || (codepoint == 0x000A) || \
106         (codepoint >= 0x0020 && codepoint <= 0x007f) || (codepoint >= 0x00A0 && codepoint <= 0x00FF))
107
108#define isIBM915(codepoint) \
109        ((codepoint >= 0x0401 && codepoint <= 0x045F) || (codepoint == 0x2116))
110
111#define isIBM916(codepoint) \
112        ((codepoint >= 0x05D0 && codepoint <= 0x05EA) || (codepoint == 0x2017) || (codepoint == 0x203E))
113
114#define isCompoundS3(codepoint) \
115        ((codepoint == 0x060C) || (codepoint == 0x061B) || (codepoint == 0x061F) || (codepoint >= 0x0621 && codepoint <= 0x063A) || \
116         (codepoint >= 0x0640 && codepoint <= 0x0652) || (codepoint >= 0x0660 && codepoint <= 0x066D) || (codepoint == 0x200B) || \
117         (codepoint >= 0x0FE70 && codepoint <= 0x0FE72) || (codepoint == 0x0FE74) || (codepoint >= 0x0FE76 && codepoint <= 0x0FEBE))
118
119#define isCompoundS2(codepoint) \
120        ((codepoint == 0x02BC) || (codepoint == 0x02BD) || (codepoint >= 0x0384 && codepoint <= 0x03CE) || (codepoint == 0x2015))
121
122#define isIBM914(codepoint) \
123        ((codepoint == 0x0100) || (codepoint == 0x0101) || (codepoint == 0x0112) || (codepoint == 0x0113) || (codepoint == 0x0116) || (codepoint == 0x0117) || \
124         (codepoint == 0x0122) || (codepoint == 0x0123) || (codepoint >= 0x0128 && codepoint <= 0x012B) || (codepoint == 0x012E) || (codepoint == 0x012F) || \
125         (codepoint >= 0x0136 && codepoint <= 0x0138) || (codepoint == 0x013B) || (codepoint == 0x013C) || (codepoint == 0x0145) || (codepoint ==  0x0146) || \
126         (codepoint >= 0x014A && codepoint <= 0x014D) || (codepoint == 0x0156) || (codepoint == 0x0157) || (codepoint >= 0x0166 && codepoint <= 0x016B) || \
127         (codepoint == 0x0172) || (codepoint == 0x0173))
128
129#define isIBM874(codepoint) \
130        ((codepoint >= 0x0E01 && codepoint <= 0x0E3A) || (codepoint >= 0x0E3F && codepoint <= 0x0E5B))
131
132#define isIBM912(codepoint) \
133        ((codepoint >= 0x0102 && codepoint <= 0x0107) || (codepoint >= 0x010C && codepoint <= 0x0111) || (codepoint >= 0x0118 && codepoint <= 0x011B) || \
134         (codepoint == 0x0139) || (codepoint == 0x013A) || (codepoint == 0x013D) || (codepoint == 0x013E) || (codepoint >= 0x0141 && codepoint <= 0x0144) || \
135         (codepoint == 0x0147) || (codepoint == 0x0147) || (codepoint == 0x0150) || (codepoint == 0x0151) || (codepoint == 0x0154) || (codepoint == 0x0155) || \
136         (codepoint >= 0x0158 && codepoint <= 0x015B) || (codepoint == 0x015E) || (codepoint == 0x015F) || (codepoint >= 0x0160 && codepoint <= 0x0165) || \
137         (codepoint == 0x016E) || (codepoint == 0x016F) || (codepoint == 0x0170) || (codepoint ==  0x0171) || (codepoint >= 0x0179 && codepoint <= 0x017E) || \
138         (codepoint == 0x02C7) || (codepoint == 0x02D8) || (codepoint == 0x02D9) || (codepoint == 0x02DB) || (codepoint == 0x02DD))
139
140#define isIBM913(codepoint) \
141        ((codepoint >= 0x0108 && codepoint <= 0x010B) || (codepoint == 0x011C) || \
142         (codepoint == 0x011D) || (codepoint == 0x0120) || (codepoint == 0x0121) || \
143         (codepoint >= 0x0124 && codepoint <= 0x0127) || (codepoint == 0x0134) || (codepoint == 0x0135) || \
144         (codepoint == 0x015C) || (codepoint == 0x015D) || (codepoint == 0x016C) || (codepoint ==  0x016D))
145
146#define isCompoundS1(codepoint) \
147        ((codepoint == 0x011E) || (codepoint == 0x011F) || (codepoint == 0x0130) || \
148         (codepoint == 0x0131) || (codepoint >= 0x0218 && codepoint <= 0x021B))
149
150#define isISO8859_14(codepoint) \
151        ((codepoint >= 0x0174 && codepoint <= 0x0177) || (codepoint == 0x1E0A) || \
152         (codepoint == 0x1E0B) || (codepoint == 0x1E1E) || (codepoint == 0x1E1F) || \
153         (codepoint == 0x1E40) || (codepoint == 0x1E41) || (codepoint == 0x1E56) || \
154         (codepoint == 0x1E57) || (codepoint == 0x1E60) || (codepoint == 0x1E61) || \
155         (codepoint == 0x1E6A) || (codepoint == 0x1E6B) || (codepoint == 0x1EF2) || \
156         (codepoint == 0x1EF3) || (codepoint >= 0x1E80 && codepoint <= 0x1E85))
157
158#define isIBM923(codepoint) \
159        ((codepoint == 0x0152) || (codepoint == 0x0153) || (codepoint == 0x0178) || (codepoint == 0x20AC))
160
161
162typedef struct{
163    UConverterSharedData *myConverterArray[NUM_OF_CONVERTERS];
164    COMPOUND_TEXT_CONVERTERS state;
165} UConverterDataCompoundText;
166
167/*********** Compound Text Converter Protos ***********/
168static void
169_CompoundTextOpen(UConverter *cnv, UConverterLoadArgs *pArgs, UErrorCode *errorCode);
170
171static void
172 _CompoundTextClose(UConverter *converter);
173
174static void
175_CompoundTextReset(UConverter *converter, UConverterResetChoice choice);
176
177static const char*
178_CompoundTextgetName(const UConverter* cnv);
179
180
181static int32_t findNextEsc(const char *source, const char *sourceLimit) {
182    int32_t length = sourceLimit - source;
183    int32_t i;
184    for (i = 1; i < length; i++) {
185        if (*(source + i) == 0x1B) {
186            return i;
187        }
188    }
189
190    return length;
191}
192
193static COMPOUND_TEXT_CONVERTERS getState(int codepoint) {
194    COMPOUND_TEXT_CONVERTERS state = DO_SEARCH;
195
196    if (isASCIIRange(codepoint)) {
197        state = COMPOUND_TEXT_SINGLE_0;
198    } else if (isIBM912(codepoint)) {
199        state = IBM_912;
200    }else if (isIBM913(codepoint)) {
201        state = IBM_913;
202    } else if (isISO8859_14(codepoint)) {
203        state = ISO_8859_14;
204    } else if (isIBM923(codepoint)) {
205        state = IBM_923;
206    } else if (isIBM874(codepoint)) {
207        state = IBM_874;
208    } else if (isIBM914(codepoint)) {
209        state = IBM_914;
210    } else if (isCompoundS2(codepoint)) {
211        state = COMPOUND_TEXT_SINGLE_2;
212    } else if (isCompoundS3(codepoint)) {
213        state = COMPOUND_TEXT_SINGLE_3;
214    } else if (isIBM916(codepoint)) {
215        state = IBM_916;
216    } else if (isIBM915(codepoint)) {
217        state = IBM_915;
218    } else if (isCompoundS1(codepoint)) {
219        state = COMPOUND_TEXT_SINGLE_1;
220    }
221
222    return state;
223}
224
225static COMPOUND_TEXT_CONVERTERS findStateFromEscSeq(const char* source, const char* sourceLimit, const uint8_t* toUBytesBuffer, int32_t toUBytesBufferLength, UErrorCode *err) {
226    COMPOUND_TEXT_CONVERTERS state = INVALID;
227    UBool matchFound = FALSE;
228    int32_t i, n, offset = toUBytesBufferLength;
229
230    for (i = 0; i < NUM_OF_CONVERTERS; i++) {
231        matchFound = TRUE;
232        for (n = 0; escSeqCompoundText[i][n] != 0; n++) {
233            if (n < toUBytesBufferLength) {
234                if (toUBytesBuffer[n] != escSeqCompoundText[i][n]) {
235                    matchFound = FALSE;
236                    break;
237                }
238            } else if ((source + (n - offset)) >= sourceLimit) {
239                *err = U_TRUNCATED_CHAR_FOUND;
240                matchFound = FALSE;
241                break;
242            } else if (*(source + (n - offset)) != escSeqCompoundText[i][n]) {
243                matchFound = FALSE;
244                break;
245            }
246        }
247
248        if (matchFound) {
249            break;
250        }
251    }
252
253    if (matchFound) {
254        state = (COMPOUND_TEXT_CONVERTERS)i;
255    }
256
257    return state;
258}
259
260static void
261_CompoundTextOpen(UConverter *cnv, UConverterLoadArgs *pArgs, UErrorCode *errorCode){
262    cnv->extraInfo = uprv_malloc (sizeof (UConverterDataCompoundText));
263    if (cnv->extraInfo != NULL) {
264        UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) cnv->extraInfo;
265
266        UConverterNamePieces stackPieces;
267        UConverterLoadArgs stackArgs={ (int32_t)sizeof(UConverterLoadArgs) };
268
269        myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_0] = NULL;
270        myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_1] = ucnv_loadSharedData("icu-internal-compound-s1", &stackPieces, &stackArgs, errorCode);
271        myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_2] = ucnv_loadSharedData("icu-internal-compound-s2", &stackPieces, &stackArgs, errorCode);
272        myConverterData->myConverterArray[COMPOUND_TEXT_SINGLE_3] = ucnv_loadSharedData("icu-internal-compound-s3", &stackPieces, &stackArgs, errorCode);
273        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_1] = ucnv_loadSharedData("icu-internal-compound-d1", &stackPieces, &stackArgs, errorCode);
274        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_2] = ucnv_loadSharedData("icu-internal-compound-d2", &stackPieces, &stackArgs, errorCode);
275        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_3] = ucnv_loadSharedData("icu-internal-compound-d3", &stackPieces, &stackArgs, errorCode);
276        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_4] = ucnv_loadSharedData("icu-internal-compound-d4", &stackPieces, &stackArgs, errorCode);
277        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_5] = ucnv_loadSharedData("icu-internal-compound-d5", &stackPieces, &stackArgs, errorCode);
278        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_6] = ucnv_loadSharedData("icu-internal-compound-d6", &stackPieces, &stackArgs, errorCode);
279        myConverterData->myConverterArray[COMPOUND_TEXT_DOUBLE_7] = ucnv_loadSharedData("icu-internal-compound-d7", &stackPieces, &stackArgs, errorCode);
280        myConverterData->myConverterArray[COMPOUND_TEXT_TRIPLE_DOUBLE] = ucnv_loadSharedData("icu-internal-compound-t", &stackPieces, &stackArgs, errorCode);
281
282        myConverterData->myConverterArray[IBM_915] = ucnv_loadSharedData("ibm-915_P100-1995", &stackPieces, &stackArgs, errorCode);
283        myConverterData->myConverterArray[IBM_916] = ucnv_loadSharedData("ibm-916_P100-1995", &stackPieces, &stackArgs, errorCode);
284        myConverterData->myConverterArray[IBM_914] = ucnv_loadSharedData("ibm-914_P100-1995", &stackPieces, &stackArgs, errorCode);
285        myConverterData->myConverterArray[IBM_874] = ucnv_loadSharedData("ibm-874_P100-1995", &stackPieces, &stackArgs, errorCode);
286        myConverterData->myConverterArray[IBM_912] = ucnv_loadSharedData("ibm-912_P100-1995", &stackPieces, &stackArgs, errorCode);
287        myConverterData->myConverterArray[IBM_913] = ucnv_loadSharedData("ibm-913_P100-2000", &stackPieces, &stackArgs, errorCode);
288        myConverterData->myConverterArray[ISO_8859_14] = ucnv_loadSharedData("iso-8859_14-1998", &stackPieces, &stackArgs, errorCode);
289        myConverterData->myConverterArray[IBM_923] = ucnv_loadSharedData("ibm-923_P100-1998", &stackPieces, &stackArgs, errorCode);
290
291        if (U_FAILURE(*errorCode) || pArgs->onlyTestIsLoadable) {
292            _CompoundTextClose(cnv);
293            return;
294        }
295
296        myConverterData->state = (COMPOUND_TEXT_CONVERTERS)0;
297    } else {
298        *errorCode = U_MEMORY_ALLOCATION_ERROR;
299    }
300}
301
302
303static void
304_CompoundTextClose(UConverter *converter) {
305    UConverterDataCompoundText* myConverterData = (UConverterDataCompoundText*)(converter->extraInfo);
306    int32_t i;
307
308    if (converter->extraInfo != NULL) {
309        /*close the array of converter pointers and free the memory*/
310        for (i = 0; i < NUM_OF_CONVERTERS; i++) {
311            if (myConverterData->myConverterArray[i] != NULL) {
312                ucnv_unloadSharedDataIfReady(myConverterData->myConverterArray[i]);
313            }
314        }
315
316        uprv_free(converter->extraInfo);
317    }
318}
319
320static void
321_CompoundTextReset(UConverter *converter, UConverterResetChoice choice) {
322}
323
324static const char*
325_CompoundTextgetName(const UConverter* cnv){
326    return "x11-compound-text";
327}
328
329static void
330UConverter_fromUnicode_CompoundText_OFFSETS(UConverterFromUnicodeArgs* args, UErrorCode* err){
331    UConverter *cnv = args->converter;
332    uint8_t *target = (uint8_t *) args->target;
333    const uint8_t *targetLimit = (const uint8_t *) args->targetLimit;
334    const UChar* source = args->source;
335    const UChar* sourceLimit = args->sourceLimit;
336    /* int32_t* offsets = args->offsets; */
337    UChar32 sourceChar;
338    UBool useFallback = cnv->useFallback;
339    uint8_t tmpTargetBuffer[7];
340    int32_t tmpTargetBufferLength = 0;
341    COMPOUND_TEXT_CONVERTERS currentState, tmpState;
342    uint32_t pValue;
343    int32_t pValueLength = 0;
344    int32_t i, n, j;
345
346    UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) cnv->extraInfo;
347
348    currentState = myConverterData->state;
349
350    /* check if the last codepoint of previous buffer was a lead surrogate*/
351    if((sourceChar = cnv->fromUChar32)!=0 && target< targetLimit) {
352        goto getTrail;
353    }
354
355    while( source < sourceLimit){
356        if(target < targetLimit){
357
358            sourceChar  = *(source++);
359            /*check if the char is a First surrogate*/
360             if(U16_IS_SURROGATE(sourceChar)) {
361                if(U16_IS_SURROGATE_LEAD(sourceChar)) {
362getTrail:
363                    /*look ahead to find the trail surrogate*/
364                    if(source < sourceLimit) {
365                        /* test the following code unit */
366                        UChar trail=(UChar) *source;
367                        if(U16_IS_TRAIL(trail)) {
368                            source++;
369                            sourceChar=U16_GET_SUPPLEMENTARY(sourceChar, trail);
370                            cnv->fromUChar32=0x00;
371                            /* convert this supplementary code point */
372                            /* exit this condition tree */
373                        } else {
374                            /* this is an unmatched lead code unit (1st surrogate) */
375                            /* callback(illegal) */
376                            *err=U_ILLEGAL_CHAR_FOUND;
377                            cnv->fromUChar32=sourceChar;
378                            break;
379                        }
380                    } else {
381                        /* no more input */
382                        cnv->fromUChar32=sourceChar;
383                        break;
384                    }
385                } else {
386                    /* this is an unmatched trail code unit (2nd surrogate) */
387                    /* callback(illegal) */
388                    *err=U_ILLEGAL_CHAR_FOUND;
389                    cnv->fromUChar32=sourceChar;
390                    break;
391                }
392            }
393
394             tmpTargetBufferLength = 0;
395             tmpState = getState(sourceChar);
396
397             if (tmpState != DO_SEARCH && currentState != tmpState) {
398                 /* Get escape sequence if necessary */
399                 currentState = tmpState;
400                 for (i = 0; escSeqCompoundText[currentState][i] != 0; i++) {
401                     tmpTargetBuffer[tmpTargetBufferLength++] = escSeqCompoundText[currentState][i];
402                 }
403             }
404
405             if (tmpState == DO_SEARCH) {
406                 /* Test all available converters */
407                 for (i = 1; i < SEARCH_LENGTH; i++) {
408                     pValueLength = ucnv_MBCSFromUChar32(myConverterData->myConverterArray[i], sourceChar, &pValue, useFallback);
409                     if (pValueLength > 0) {
410                         tmpState = (COMPOUND_TEXT_CONVERTERS)i;
411                         if (currentState != tmpState) {
412                             currentState = tmpState;
413                             for (j = 0; escSeqCompoundText[currentState][j] != 0; j++) {
414                                 tmpTargetBuffer[tmpTargetBufferLength++] = escSeqCompoundText[currentState][j];
415                             }
416                         }
417                         for (n = (pValueLength - 1); n >= 0; n--) {
418                             tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)(pValue >> (n * 8));
419                         }
420                         break;
421                     }
422                 }
423             } else if (tmpState == COMPOUND_TEXT_SINGLE_0) {
424                 tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)sourceChar;
425             } else {
426                 pValueLength = ucnv_MBCSFromUChar32(myConverterData->myConverterArray[currentState], sourceChar, &pValue, useFallback);
427                 if (pValueLength > 0) {
428                     for (n = (pValueLength - 1); n >= 0; n--) {
429                         tmpTargetBuffer[tmpTargetBufferLength++] = (uint8_t)(pValue >> (n * 8));
430                     }
431                 }
432             }
433
434             for (i = 0; i < tmpTargetBufferLength; i++) {
435                 if (target < targetLimit) {
436                     *target++ = tmpTargetBuffer[i];
437                 } else {
438                     *err = U_BUFFER_OVERFLOW_ERROR;
439                     break;
440                 }
441             }
442
443             if (*err == U_BUFFER_OVERFLOW_ERROR) {
444                 for (; i < tmpTargetBufferLength; i++) {
445                     args->converter->charErrorBuffer[args->converter->charErrorBufferLength++] = tmpTargetBuffer[i];
446                 }
447             }
448        } else {
449            *err = U_BUFFER_OVERFLOW_ERROR;
450            break;
451        }
452    }
453
454    /*save the state and return */
455    myConverterData->state = currentState;
456    args->source = source;
457    args->target = (char*)target;
458}
459
460
461static void
462UConverter_toUnicode_CompoundText_OFFSETS(UConverterToUnicodeArgs *args,
463                                               UErrorCode* err){
464    const char *mySource = (char *) args->source;
465    UChar *myTarget = args->target;
466    const char *mySourceLimit = args->sourceLimit;
467    const char *tmpSourceLimit = mySourceLimit;
468    uint32_t mySourceChar = 0x0000;
469    COMPOUND_TEXT_CONVERTERS currentState, tmpState;
470    int32_t sourceOffset = 0;
471    UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *) args->converter->extraInfo;
472    UConverterSharedData* savedSharedData = NULL;
473
474    UConverterToUnicodeArgs subArgs;
475    int32_t minArgsSize;
476
477    /* set up the subconverter arguments */
478    if(args->size<sizeof(UConverterToUnicodeArgs)) {
479        minArgsSize = args->size;
480    } else {
481        minArgsSize = (int32_t)sizeof(UConverterToUnicodeArgs);
482    }
483
484    uprv_memcpy(&subArgs, args, minArgsSize);
485    subArgs.size = (uint16_t)minArgsSize;
486
487    currentState = tmpState =  myConverterData->state;
488
489    while(mySource < mySourceLimit){
490        if(myTarget < args->targetLimit){
491            if (args->converter->toULength > 0) {
492                mySourceChar = args->converter->toUBytes[0];
493            } else {
494                mySourceChar = (uint8_t)*mySource;
495            }
496
497            if (mySourceChar == ESC_START) {
498                tmpState = findStateFromEscSeq(mySource, mySourceLimit, args->converter->toUBytes, args->converter->toULength, err);
499
500                if (*err == U_TRUNCATED_CHAR_FOUND) {
501                    for (; mySource < mySourceLimit;) {
502                        args->converter->toUBytes[args->converter->toULength++] = *mySource++;
503                    }
504                    *err = U_ZERO_ERROR;
505                    break;
506                } else if (tmpState == INVALID) {
507                    if (args->converter->toULength == 0) {
508                        mySource++; /* skip over the 0x1b byte */
509                    }
510                    *err = U_ILLEGAL_CHAR_FOUND;
511                    break;
512                }
513
514                if (tmpState != currentState) {
515                    currentState = tmpState;
516                }
517
518                sourceOffset = uprv_strlen((char*)escSeqCompoundText[currentState]) - args->converter->toULength;
519
520                mySource += sourceOffset;
521
522                args->converter->toULength = 0;
523            }
524
525            if (currentState == COMPOUND_TEXT_SINGLE_0) {
526                while (mySource < mySourceLimit) {
527                    if (*mySource == ESC_START) {
528                        break;
529                    }
530                    if (myTarget < args->targetLimit) {
531                        *myTarget++ = 0x00ff&(*mySource++);
532                    } else {
533                        *err = U_BUFFER_OVERFLOW_ERROR;
534                        break;
535                    }
536                }
537            } else if (mySource < mySourceLimit){
538                sourceOffset = findNextEsc(mySource, mySourceLimit);
539
540                tmpSourceLimit = mySource + sourceOffset;
541
542                subArgs.source = mySource;
543                subArgs.sourceLimit = tmpSourceLimit;
544                subArgs.target = myTarget;
545                savedSharedData = subArgs.converter->sharedData;
546                subArgs.converter->sharedData = myConverterData->myConverterArray[currentState];
547
548                ucnv_MBCSToUnicodeWithOffsets(&subArgs, err);
549
550                subArgs.converter->sharedData = savedSharedData;
551
552                mySource = subArgs.source;
553                myTarget = subArgs.target;
554
555                if (U_FAILURE(*err)) {
556                    if(*err == U_BUFFER_OVERFLOW_ERROR) {
557                        if(subArgs.converter->UCharErrorBufferLength > 0) {
558                            uprv_memcpy(args->converter->UCharErrorBuffer, subArgs.converter->UCharErrorBuffer,
559                                        subArgs.converter->UCharErrorBufferLength);
560                        }
561                        args->converter->UCharErrorBufferLength=subArgs.converter->UCharErrorBufferLength;
562                        subArgs.converter->UCharErrorBufferLength = 0;
563                    }
564                    break;
565                }
566            }
567        } else {
568            *err = U_BUFFER_OVERFLOW_ERROR;
569            break;
570        }
571    }
572    myConverterData->state = currentState;
573    args->target = myTarget;
574    args->source = mySource;
575}
576
577static void
578_CompoundText_GetUnicodeSet(const UConverter *cnv,
579                    const USetAdder *sa,
580                    UConverterUnicodeSet which,
581                    UErrorCode *pErrorCode) {
582    UConverterDataCompoundText *myConverterData = (UConverterDataCompoundText *)cnv->extraInfo;
583    int32_t i;
584
585    for (i = 1; i < NUM_OF_CONVERTERS; i++) {
586        ucnv_MBCSGetUnicodeSetForUnicode(myConverterData->myConverterArray[i], sa, which, pErrorCode);
587    }
588    sa->add(sa->set, 0x0000);
589    sa->add(sa->set, 0x0009);
590    sa->add(sa->set, 0x000A);
591    sa->addRange(sa->set, 0x0020, 0x007F);
592    sa->addRange(sa->set, 0x00A0, 0x00FF);
593}
594
595static const UConverterImpl _CompoundTextImpl = {
596
597    UCNV_COMPOUND_TEXT,
598
599    NULL,
600    NULL,
601
602    _CompoundTextOpen,
603    _CompoundTextClose,
604    _CompoundTextReset,
605
606    UConverter_toUnicode_CompoundText_OFFSETS,
607    UConverter_toUnicode_CompoundText_OFFSETS,
608    UConverter_fromUnicode_CompoundText_OFFSETS,
609    UConverter_fromUnicode_CompoundText_OFFSETS,
610    NULL,
611
612    NULL,
613    _CompoundTextgetName,
614    NULL,
615    NULL,
616    _CompoundText_GetUnicodeSet
617};
618static const UConverterStaticData _CompoundTextStaticData = {
619    sizeof(UConverterStaticData),
620    "COMPOUND_TEXT",
621    0,
622    UCNV_IBM,
623    UCNV_COMPOUND_TEXT,
624    1,
625    6,
626    { 0xef, 0, 0, 0 },
627    1,
628    FALSE,
629    FALSE,
630    0,
631    0,
632    { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */
633};
634const UConverterSharedData _CompoundTextData = {
635    sizeof(UConverterSharedData),
636    ~((uint32_t) 0),
637    NULL,
638    NULL,
639    &_CompoundTextStaticData,
640    FALSE,
641    &_CompoundTextImpl,
642    0
643};
644
645#endif /* #if !UCONFIG_NO_LEGACY_CONVERSION */
646