AaptConfig.cpp revision de7de47fef1dcaa26d553665d89e4d3792325c3f 
1/*
2 * Copyright (C) 2014 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#include <androidfw/ResourceTypes.h>
18#include <ctype.h>
19
20#include "AaptConfig.h"
21#include "AaptAssets.h"
22#include "AaptUtil.h"
23#include "ResourceFilter.h"
24
25using android::String8;
26using android::Vector;
27using android::ResTable_config;
28
29namespace AaptConfig {
30
31static const char* kWildcardName = "any";
32
33bool parse(const String8& str, ConfigDescription* out) {
34    Vector<String8> parts = AaptUtil::splitAndLowerCase(str, '-');
35
36    ConfigDescription config;
37    AaptLocaleValue locale;
38    ssize_t index = 0;
39    ssize_t localeIndex = 0;
40    const ssize_t N = parts.size();
41    const char* part = parts[index].string();
42
43    if (str.length() == 0) {
44        goto success;
45    }
46
47    if (parseMcc(part, &config)) {
48        index++;
49        if (index == N) {
50            goto success;
51        }
52        part = parts[index].string();
53    }
54
55    if (parseMnc(part, &config)) {
56        index++;
57        if (index == N) {
58            goto success;
59        }
60        part = parts[index].string();
61    }
62
63    // Locale spans a few '-' separators, so we let it
64    // control the index.
65    localeIndex = locale.initFromDirName(parts, index);
66    if (localeIndex < 0) {
67        return false;
68    } else if (localeIndex > index) {
69        locale.writeTo(&config);
70        index = localeIndex;
71        if (index >= N) {
72            goto success;
73        }
74        part = parts[index].string();
75    }
76
77    if (parseLayoutDirection(part, &config)) {
78        index++;
79        if (index == N) {
80            goto success;
81        }
82        part = parts[index].string();
83    }
84
85    if (parseSmallestScreenWidthDp(part, &config)) {
86        index++;
87        if (index == N) {
88            goto success;
89        }
90        part = parts[index].string();
91    }
92
93    if (parseScreenWidthDp(part, &config)) {
94        index++;
95        if (index == N) {
96            goto success;
97        }
98        part = parts[index].string();
99    }
100
101    if (parseScreenHeightDp(part, &config)) {
102        index++;
103        if (index == N) {
104            goto success;
105        }
106        part = parts[index].string();
107    }
108
109    if (parseScreenLayoutSize(part, &config)) {
110        index++;
111        if (index == N) {
112            goto success;
113        }
114        part = parts[index].string();
115    }
116
117    if (parseScreenLayoutLong(part, &config)) {
118        index++;
119        if (index == N) {
120            goto success;
121        }
122        part = parts[index].string();
123    }
124
125    if (parseOrientation(part, &config)) {
126        index++;
127        if (index == N) {
128            goto success;
129        }
130        part = parts[index].string();
131    }
132
133    if (parseUiModeType(part, &config)) {
134        index++;
135        if (index == N) {
136            goto success;
137        }
138        part = parts[index].string();
139    }
140
141    if (parseUiModeNight(part, &config)) {
142        index++;
143        if (index == N) {
144            goto success;
145        }
146        part = parts[index].string();
147    }
148
149    if (parseDensity(part, &config)) {
150        index++;
151        if (index == N) {
152            goto success;
153        }
154        part = parts[index].string();
155    }
156
157    if (parseTouchscreen(part, &config)) {
158        index++;
159        if (index == N) {
160            goto success;
161        }
162        part = parts[index].string();
163    }
164
165    if (parseKeysHidden(part, &config)) {
166        index++;
167        if (index == N) {
168            goto success;
169        }
170        part = parts[index].string();
171    }
172
173    if (parseKeyboard(part, &config)) {
174        index++;
175        if (index == N) {
176            goto success;
177        }
178        part = parts[index].string();
179    }
180
181    if (parseNavHidden(part, &config)) {
182        index++;
183        if (index == N) {
184            goto success;
185        }
186        part = parts[index].string();
187    }
188
189    if (parseNavigation(part, &config)) {
190        index++;
191        if (index == N) {
192            goto success;
193        }
194        part = parts[index].string();
195    }
196
197    if (parseScreenSize(part, &config)) {
198        index++;
199        if (index == N) {
200            goto success;
201        }
202        part = parts[index].string();
203    }
204
205    if (parseVersion(part, &config)) {
206        index++;
207        if (index == N) {
208            goto success;
209        }
210        part = parts[index].string();
211    }
212
213    // Unrecognized.
214    return false;
215
216success:
217    if (out != NULL) {
218        applyVersionForCompatibility(&config);
219        *out = config;
220    }
221    return true;
222}
223
224bool parseCommaSeparatedList(const String8& str, std::set<ConfigDescription>* outSet) {
225    Vector<String8> parts = AaptUtil::splitAndLowerCase(str, ',');
226    const size_t N = parts.size();
227    for (size_t i = 0; i < N; i++) {
228        ConfigDescription config;
229        if (!parse(parts[i], &config)) {
230            return false;
231        }
232        outSet->insert(config);
233    }
234    return true;
235}
236
237void applyVersionForCompatibility(ConfigDescription* config) {
238    if (config == NULL) {
239        return;
240    }
241
242    uint16_t minSdk = 0;
243    if (config->density == ResTable_config::DENSITY_ANY) {
244        minSdk = SDK_L;
245    } else if (config->smallestScreenWidthDp != ResTable_config::SCREENWIDTH_ANY
246            || config->screenWidthDp != ResTable_config::SCREENWIDTH_ANY
247            || config->screenHeightDp != ResTable_config::SCREENHEIGHT_ANY) {
248        minSdk = SDK_HONEYCOMB_MR2;
249    } else if ((config->uiMode & ResTable_config::MASK_UI_MODE_TYPE)
250                != ResTable_config::UI_MODE_TYPE_ANY
251            ||  (config->uiMode & ResTable_config::MASK_UI_MODE_NIGHT)
252                != ResTable_config::UI_MODE_NIGHT_ANY) {
253        minSdk = SDK_FROYO;
254    } else if ((config->screenLayout & ResTable_config::MASK_SCREENSIZE)
255                != ResTable_config::SCREENSIZE_ANY
256            ||  (config->screenLayout & ResTable_config::MASK_SCREENLONG)
257                != ResTable_config::SCREENLONG_ANY
258            || config->density != ResTable_config::DENSITY_DEFAULT) {
259        minSdk = SDK_DONUT;
260    }
261
262    if (minSdk > config->sdkVersion) {
263        config->sdkVersion = minSdk;
264    }
265}
266
267bool parseMcc(const char* name, ResTable_config* out) {
268    if (strcmp(name, kWildcardName) == 0) {
269        if (out) out->mcc = 0;
270        return true;
271    }
272    const char* c = name;
273    if (tolower(*c) != 'm') return false;
274    c++;
275    if (tolower(*c) != 'c') return false;
276    c++;
277    if (tolower(*c) != 'c') return false;
278    c++;
279
280    const char* val = c;
281
282    while (*c >= '0' && *c <= '9') {
283        c++;
284    }
285    if (*c != 0) return false;
286    if (c-val != 3) return false;
287
288    int d = atoi(val);
289    if (d != 0) {
290        if (out) out->mcc = d;
291        return true;
292    }
293
294    return false;
295}
296
297bool parseMnc(const char* name, ResTable_config* out) {
298    if (strcmp(name, kWildcardName) == 0) {
299        if (out) out->mcc = 0;
300        return true;
301    }
302    const char* c = name;
303    if (tolower(*c) != 'm') return false;
304    c++;
305    if (tolower(*c) != 'n') return false;
306    c++;
307    if (tolower(*c) != 'c') return false;
308    c++;
309
310    const char* val = c;
311
312    while (*c >= '0' && *c <= '9') {
313        c++;
314    }
315    if (*c != 0) return false;
316    if (c-val == 0 || c-val > 3) return false;
317
318    if (out) {
319        out->mnc = atoi(val);
320        if (out->mnc == 0) {
321            out->mnc = ACONFIGURATION_MNC_ZERO;
322        }
323    }
324
325    return true;
326}
327
328bool parseLayoutDirection(const char* name, ResTable_config* out) {
329    if (strcmp(name, kWildcardName) == 0) {
330        if (out) out->screenLayout =
331                (out->screenLayout&~ResTable_config::MASK_LAYOUTDIR)
332                | ResTable_config::LAYOUTDIR_ANY;
333        return true;
334    } else if (strcmp(name, "ldltr") == 0) {
335        if (out) out->screenLayout =
336                (out->screenLayout&~ResTable_config::MASK_LAYOUTDIR)
337                | ResTable_config::LAYOUTDIR_LTR;
338        return true;
339    } else if (strcmp(name, "ldrtl") == 0) {
340        if (out) out->screenLayout =
341                (out->screenLayout&~ResTable_config::MASK_LAYOUTDIR)
342                | ResTable_config::LAYOUTDIR_RTL;
343        return true;
344    }
345
346    return false;
347}
348
349bool parseScreenLayoutSize(const char* name, ResTable_config* out) {
350    if (strcmp(name, kWildcardName) == 0) {
351        if (out) out->screenLayout =
352                (out->screenLayout&~ResTable_config::MASK_SCREENSIZE)
353                | ResTable_config::SCREENSIZE_ANY;
354        return true;
355    } else if (strcmp(name, "small") == 0) {
356        if (out) out->screenLayout =
357                (out->screenLayout&~ResTable_config::MASK_SCREENSIZE)
358                | ResTable_config::SCREENSIZE_SMALL;
359        return true;
360    } else if (strcmp(name, "normal") == 0) {
361        if (out) out->screenLayout =
362                (out->screenLayout&~ResTable_config::MASK_SCREENSIZE)
363                | ResTable_config::SCREENSIZE_NORMAL;
364        return true;
365    } else if (strcmp(name, "large") == 0) {
366        if (out) out->screenLayout =
367                (out->screenLayout&~ResTable_config::MASK_SCREENSIZE)
368                | ResTable_config::SCREENSIZE_LARGE;
369        return true;
370    } else if (strcmp(name, "xlarge") == 0) {
371        if (out) out->screenLayout =
372                (out->screenLayout&~ResTable_config::MASK_SCREENSIZE)
373                | ResTable_config::SCREENSIZE_XLARGE;
374        return true;
375    }
376
377    return false;
378}
379
380bool parseScreenLayoutLong(const char* name, ResTable_config* out) {
381    if (strcmp(name, kWildcardName) == 0) {
382        if (out) out->screenLayout =
383                (out->screenLayout&~ResTable_config::MASK_SCREENLONG)
384                | ResTable_config::SCREENLONG_ANY;
385        return true;
386    } else if (strcmp(name, "long") == 0) {
387        if (out) out->screenLayout =
388                (out->screenLayout&~ResTable_config::MASK_SCREENLONG)
389                | ResTable_config::SCREENLONG_YES;
390        return true;
391    } else if (strcmp(name, "notlong") == 0) {
392        if (out) out->screenLayout =
393                (out->screenLayout&~ResTable_config::MASK_SCREENLONG)
394                | ResTable_config::SCREENLONG_NO;
395        return true;
396    }
397
398    return false;
399}
400
401bool parseOrientation(const char* name, ResTable_config* out) {
402    if (strcmp(name, kWildcardName) == 0) {
403        if (out) out->orientation = out->ORIENTATION_ANY;
404        return true;
405    } else if (strcmp(name, "port") == 0) {
406        if (out) out->orientation = out->ORIENTATION_PORT;
407        return true;
408    } else if (strcmp(name, "land") == 0) {
409        if (out) out->orientation = out->ORIENTATION_LAND;
410        return true;
411    } else if (strcmp(name, "square") == 0) {
412        if (out) out->orientation = out->ORIENTATION_SQUARE;
413        return true;
414    }
415
416    return false;
417}
418
419bool parseUiModeType(const char* name, ResTable_config* out) {
420    if (strcmp(name, kWildcardName) == 0) {
421        if (out) out->uiMode =
422                (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
423                | ResTable_config::UI_MODE_TYPE_ANY;
424        return true;
425    } else if (strcmp(name, "desk") == 0) {
426      if (out) out->uiMode =
427              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
428              | ResTable_config::UI_MODE_TYPE_DESK;
429        return true;
430    } else if (strcmp(name, "car") == 0) {
431      if (out) out->uiMode =
432              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
433              | ResTable_config::UI_MODE_TYPE_CAR;
434        return true;
435    } else if (strcmp(name, "television") == 0) {
436      if (out) out->uiMode =
437              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
438              | ResTable_config::UI_MODE_TYPE_TELEVISION;
439        return true;
440    } else if (strcmp(name, "appliance") == 0) {
441      if (out) out->uiMode =
442              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
443              | ResTable_config::UI_MODE_TYPE_APPLIANCE;
444        return true;
445    } else if (strcmp(name, "watch") == 0) {
446      if (out) out->uiMode =
447              (out->uiMode&~ResTable_config::MASK_UI_MODE_TYPE)
448              | ResTable_config::UI_MODE_TYPE_WATCH;
449        return true;
450    }
451
452    return false;
453}
454
455bool parseUiModeNight(const char* name, ResTable_config* out) {
456    if (strcmp(name, kWildcardName) == 0) {
457        if (out) out->uiMode =
458                (out->uiMode&~ResTable_config::MASK_UI_MODE_NIGHT)
459                | ResTable_config::UI_MODE_NIGHT_ANY;
460        return true;
461    } else if (strcmp(name, "night") == 0) {
462        if (out) out->uiMode =
463                (out->uiMode&~ResTable_config::MASK_UI_MODE_NIGHT)
464                | ResTable_config::UI_MODE_NIGHT_YES;
465        return true;
466    } else if (strcmp(name, "notnight") == 0) {
467      if (out) out->uiMode =
468              (out->uiMode&~ResTable_config::MASK_UI_MODE_NIGHT)
469              | ResTable_config::UI_MODE_NIGHT_NO;
470        return true;
471    }
472
473    return false;
474}
475
476bool parseDensity(const char* name, ResTable_config* out) {
477    if (strcmp(name, kWildcardName) == 0) {
478        if (out) out->density = ResTable_config::DENSITY_DEFAULT;
479        return true;
480    }
481
482    if (strcmp(name, "anydpi") == 0) {
483        if (out) out->density = ResTable_config::DENSITY_ANY;
484        return true;
485    }
486
487    if (strcmp(name, "nodpi") == 0) {
488        if (out) out->density = ResTable_config::DENSITY_NONE;
489        return true;
490    }
491
492    if (strcmp(name, "ldpi") == 0) {
493        if (out) out->density = ResTable_config::DENSITY_LOW;
494        return true;
495    }
496
497    if (strcmp(name, "mdpi") == 0) {
498        if (out) out->density = ResTable_config::DENSITY_MEDIUM;
499        return true;
500    }
501
502    if (strcmp(name, "tvdpi") == 0) {
503        if (out) out->density = ResTable_config::DENSITY_TV;
504        return true;
505    }
506
507    if (strcmp(name, "hdpi") == 0) {
508        if (out) out->density = ResTable_config::DENSITY_HIGH;
509        return true;
510    }
511
512    if (strcmp(name, "xhdpi") == 0) {
513        if (out) out->density = ResTable_config::DENSITY_XHIGH;
514        return true;
515    }
516
517    if (strcmp(name, "xxhdpi") == 0) {
518        if (out) out->density = ResTable_config::DENSITY_XXHIGH;
519        return true;
520    }
521
522    if (strcmp(name, "xxxhdpi") == 0) {
523        if (out) out->density = ResTable_config::DENSITY_XXXHIGH;
524        return true;
525    }
526
527    char* c = (char*)name;
528    while (*c >= '0' && *c <= '9') {
529        c++;
530    }
531
532    // check that we have 'dpi' after the last digit.
533    if (toupper(c[0]) != 'D' ||
534            toupper(c[1]) != 'P' ||
535            toupper(c[2]) != 'I' ||
536            c[3] != 0) {
537        return false;
538    }
539
540    // temporarily replace the first letter with \0 to
541    // use atoi.
542    char tmp = c[0];
543    c[0] = '\0';
544
545    int d = atoi(name);
546    c[0] = tmp;
547
548    if (d != 0) {
549        if (out) out->density = d;
550        return true;
551    }
552
553    return false;
554}
555
556bool parseTouchscreen(const char* name, ResTable_config* out) {
557    if (strcmp(name, kWildcardName) == 0) {
558        if (out) out->touchscreen = out->TOUCHSCREEN_ANY;
559        return true;
560    } else if (strcmp(name, "notouch") == 0) {
561        if (out) out->touchscreen = out->TOUCHSCREEN_NOTOUCH;
562        return true;
563    } else if (strcmp(name, "stylus") == 0) {
564        if (out) out->touchscreen = out->TOUCHSCREEN_STYLUS;
565        return true;
566    } else if (strcmp(name, "finger") == 0) {
567        if (out) out->touchscreen = out->TOUCHSCREEN_FINGER;
568        return true;
569    }
570
571    return false;
572}
573
574bool parseKeysHidden(const char* name, ResTable_config* out) {
575    uint8_t mask = 0;
576    uint8_t value = 0;
577    if (strcmp(name, kWildcardName) == 0) {
578        mask = ResTable_config::MASK_KEYSHIDDEN;
579        value = ResTable_config::KEYSHIDDEN_ANY;
580    } else if (strcmp(name, "keysexposed") == 0) {
581        mask = ResTable_config::MASK_KEYSHIDDEN;
582        value = ResTable_config::KEYSHIDDEN_NO;
583    } else if (strcmp(name, "keyshidden") == 0) {
584        mask = ResTable_config::MASK_KEYSHIDDEN;
585        value = ResTable_config::KEYSHIDDEN_YES;
586    } else if (strcmp(name, "keyssoft") == 0) {
587        mask = ResTable_config::MASK_KEYSHIDDEN;
588        value = ResTable_config::KEYSHIDDEN_SOFT;
589    }
590
591    if (mask != 0) {
592        if (out) out->inputFlags = (out->inputFlags&~mask) | value;
593        return true;
594    }
595
596    return false;
597}
598
599bool parseKeyboard(const char* name, ResTable_config* out) {
600    if (strcmp(name, kWildcardName) == 0) {
601        if (out) out->keyboard = out->KEYBOARD_ANY;
602        return true;
603    } else if (strcmp(name, "nokeys") == 0) {
604        if (out) out->keyboard = out->KEYBOARD_NOKEYS;
605        return true;
606    } else if (strcmp(name, "qwerty") == 0) {
607        if (out) out->keyboard = out->KEYBOARD_QWERTY;
608        return true;
609    } else if (strcmp(name, "12key") == 0) {
610        if (out) out->keyboard = out->KEYBOARD_12KEY;
611        return true;
612    }
613
614    return false;
615}
616
617bool parseNavHidden(const char* name, ResTable_config* out) {
618    uint8_t mask = 0;
619    uint8_t value = 0;
620    if (strcmp(name, kWildcardName) == 0) {
621        mask = ResTable_config::MASK_NAVHIDDEN;
622        value = ResTable_config::NAVHIDDEN_ANY;
623    } else if (strcmp(name, "navexposed") == 0) {
624        mask = ResTable_config::MASK_NAVHIDDEN;
625        value = ResTable_config::NAVHIDDEN_NO;
626    } else if (strcmp(name, "navhidden") == 0) {
627        mask = ResTable_config::MASK_NAVHIDDEN;
628        value = ResTable_config::NAVHIDDEN_YES;
629    }
630
631    if (mask != 0) {
632        if (out) out->inputFlags = (out->inputFlags&~mask) | value;
633        return true;
634    }
635
636    return false;
637}
638
639bool parseNavigation(const char* name, ResTable_config* out) {
640    if (strcmp(name, kWildcardName) == 0) {
641        if (out) out->navigation = out->NAVIGATION_ANY;
642        return true;
643    } else if (strcmp(name, "nonav") == 0) {
644        if (out) out->navigation = out->NAVIGATION_NONAV;
645        return true;
646    } else if (strcmp(name, "dpad") == 0) {
647        if (out) out->navigation = out->NAVIGATION_DPAD;
648        return true;
649    } else if (strcmp(name, "trackball") == 0) {
650        if (out) out->navigation = out->NAVIGATION_TRACKBALL;
651        return true;
652    } else if (strcmp(name, "wheel") == 0) {
653        if (out) out->navigation = out->NAVIGATION_WHEEL;
654        return true;
655    }
656
657    return false;
658}
659
660bool parseScreenSize(const char* name, ResTable_config* out) {
661    if (strcmp(name, kWildcardName) == 0) {
662        if (out) {
663            out->screenWidth = out->SCREENWIDTH_ANY;
664            out->screenHeight = out->SCREENHEIGHT_ANY;
665        }
666        return true;
667    }
668
669    const char* x = name;
670    while (*x >= '0' && *x <= '9') x++;
671    if (x == name || *x != 'x') return false;
672    String8 xName(name, x-name);
673    x++;
674
675    const char* y = x;
676    while (*y >= '0' && *y <= '9') y++;
677    if (y == name || *y != 0) return false;
678    String8 yName(x, y-x);
679
680    uint16_t w = (uint16_t)atoi(xName.string());
681    uint16_t h = (uint16_t)atoi(yName.string());
682    if (w < h) {
683        return false;
684    }
685
686    if (out) {
687        out->screenWidth = w;
688        out->screenHeight = h;
689    }
690
691    return true;
692}
693
694bool parseSmallestScreenWidthDp(const char* name, ResTable_config* out) {
695    if (strcmp(name, kWildcardName) == 0) {
696        if (out) {
697            out->smallestScreenWidthDp = out->SCREENWIDTH_ANY;
698        }
699        return true;
700    }
701
702    if (*name != 's') return false;
703    name++;
704    if (*name != 'w') return false;
705    name++;
706    const char* x = name;
707    while (*x >= '0' && *x <= '9') x++;
708    if (x == name || x[0] != 'd' || x[1] != 'p' || x[2] != 0) return false;
709    String8 xName(name, x-name);
710
711    if (out) {
712        out->smallestScreenWidthDp = (uint16_t)atoi(xName.string());
713    }
714
715    return true;
716}
717
718bool parseScreenWidthDp(const char* name, ResTable_config* out) {
719    if (strcmp(name, kWildcardName) == 0) {
720        if (out) {
721            out->screenWidthDp = out->SCREENWIDTH_ANY;
722        }
723        return true;
724    }
725
726    if (*name != 'w') return false;
727    name++;
728    const char* x = name;
729    while (*x >= '0' && *x <= '9') x++;
730    if (x == name || x[0] != 'd' || x[1] != 'p' || x[2] != 0) return false;
731    String8 xName(name, x-name);
732
733    if (out) {
734        out->screenWidthDp = (uint16_t)atoi(xName.string());
735    }
736
737    return true;
738}
739
740bool parseScreenHeightDp(const char* name, ResTable_config* out) {
741    if (strcmp(name, kWildcardName) == 0) {
742        if (out) {
743            out->screenHeightDp = out->SCREENWIDTH_ANY;
744        }
745        return true;
746    }
747
748    if (*name != 'h') return false;
749    name++;
750    const char* x = name;
751    while (*x >= '0' && *x <= '9') x++;
752    if (x == name || x[0] != 'd' || x[1] != 'p' || x[2] != 0) return false;
753    String8 xName(name, x-name);
754
755    if (out) {
756        out->screenHeightDp = (uint16_t)atoi(xName.string());
757    }
758
759    return true;
760}
761
762bool parseVersion(const char* name, ResTable_config* out) {
763    if (strcmp(name, kWildcardName) == 0) {
764        if (out) {
765            out->sdkVersion = out->SDKVERSION_ANY;
766            out->minorVersion = out->MINORVERSION_ANY;
767        }
768        return true;
769    }
770
771    if (*name != 'v') {
772        return false;
773    }
774
775    name++;
776    const char* s = name;
777    while (*s >= '0' && *s <= '9') s++;
778    if (s == name || *s != 0) return false;
779    String8 sdkName(name, s-name);
780
781    if (out) {
782        out->sdkVersion = (uint16_t)atoi(sdkName.string());
783        out->minorVersion = 0;
784    }
785
786    return true;
787}
788
789String8 getVersion(const ResTable_config& config) {
790    return String8::format("v%u", config.sdkVersion);
791}
792
793bool isSameExcept(const ResTable_config& a, const ResTable_config& b, int axisMask) {
794    return a.diff(b) == axisMask;
795}
796
797bool isDensityOnly(const ResTable_config& config) {
798    if (config.density == ResTable_config::DENSITY_NONE) {
799        return false;
800    }
801
802    if (config.density == ResTable_config::DENSITY_ANY) {
803        if (config.sdkVersion != SDK_L) {
804            // Someone modified the sdkVersion from the default, this is not safe to assume.
805            return false;
806        }
807    } else if (config.sdkVersion != SDK_DONUT) {
808        return false;
809    }
810
811    const uint32_t mask = ResTable_config::CONFIG_DENSITY | ResTable_config::CONFIG_VERSION;
812    const ConfigDescription nullConfig;
813    return (nullConfig.diff(config) & ~mask) == 0;
814}
815
816} // namespace AaptConfig
817