1 // 2 // Copyright 2014 The Android Open Source Project 3 // 4 // Build resource files from raw assets. 5 // 6 7 #include "ResourceFilter.h" 8 #include "AaptUtil.h" 9 #include "AaptConfig.h" 10 11 status_t 12 WeakResourceFilter::parse(const String8& str) 13 { 14 Vector<String8> configStrs = AaptUtil::split(str, ','); 15 const size_t N = configStrs.size(); 16 mConfigs.clear(); 17 mConfigMask = 0; 18 mConfigs.resize(N); 19 for (size_t i = 0; i < N; i++) { 20 const String8& part = configStrs[i]; 21 if (part == "en_XA") { 22 mContainsPseudoAccented = true; 23 } else if (part == "ar_XB") { 24 mContainsPseudoBidi = true; 25 } 26 27 std::pair<ConfigDescription, uint32_t>& entry = mConfigs.editItemAt(i); 28 29 AaptLocaleValue val; 30 if (val.initFromFilterString(part)) { 31 // For backwards compatibility, we accept configurations that 32 // only specify locale in the standard 'en_US' format. 33 val.writeTo(&entry.first); 34 } else if (!AaptConfig::parse(part, &entry.first)) { 35 fprintf(stderr, "Invalid configuration: %s\n", part.string()); 36 return UNKNOWN_ERROR; 37 } 38 39 entry.second = mDefault.diff(entry.first); 40 41 // Ignore the version 42 entry.second &= ~ResTable_config::CONFIG_VERSION; 43 44 // Ignore any densities. Those are best handled in --preferred-density 45 if ((entry.second & ResTable_config::CONFIG_DENSITY) != 0) { 46 fprintf(stderr, "warning: ignoring flag -c %s. Use --preferred-density instead.\n", entry.first.toString().string()); 47 entry.first.density = 0; 48 entry.second &= ~ResTable_config::CONFIG_DENSITY; 49 } 50 51 mConfigMask |= entry.second; 52 } 53 54 return NO_ERROR; 55 } 56 57 bool 58 WeakResourceFilter::match(const ResTable_config& config) const 59 { 60 uint32_t mask = mDefault.diff(config); 61 if ((mConfigMask & mask) == 0) { 62 // The two configurations don't have any common axis. 63 return true; 64 } 65 66 uint32_t matchedAxis = 0x0; 67 const size_t N = mConfigs.size(); 68 for (size_t i = 0; i < N; i++) { 69 const std::pair<ConfigDescription, uint32_t>& entry = mConfigs[i]; 70 uint32_t diff = entry.first.diff(config); 71 if ((diff & entry.second) == 0) { 72 // Mark the axis that was matched. 73 matchedAxis |= entry.second; 74 } else if ((diff & entry.second) == ResTable_config::CONFIG_LOCALE) { 75 // If the locales differ, but the languages are the same and 76 // the locale we are matching only has a language specified, 77 // we match. 78 if (config.language[0] && 79 memcmp(config.language, entry.first.language, sizeof(config.language)) == 0) { 80 if (config.country[0] == 0) { 81 matchedAxis |= ResTable_config::CONFIG_LOCALE; 82 } 83 } 84 } else if ((diff & entry.second) == ResTable_config::CONFIG_SMALLEST_SCREEN_SIZE) { 85 // Special case if the smallest screen width doesn't match. We check that the 86 // config being matched has a smaller screen width than the filter specified. 87 if (config.smallestScreenWidthDp != 0 && 88 config.smallestScreenWidthDp < entry.first.smallestScreenWidthDp) { 89 matchedAxis |= ResTable_config::CONFIG_SMALLEST_SCREEN_SIZE; 90 } 91 } 92 } 93 return matchedAxis == (mConfigMask & mask); 94 } 95 96 status_t 97 StrongResourceFilter::parse(const String8& str) { 98 Vector<String8> configStrs = AaptUtil::split(str, ','); 99 ConfigDescription config; 100 mConfigs.clear(); 101 for (size_t i = 0; i < configStrs.size(); i++) { 102 if (!AaptConfig::parse(configStrs[i], &config)) { 103 fprintf(stderr, "Invalid configuration: %s\n", configStrs[i].string()); 104 return UNKNOWN_ERROR; 105 } 106 mConfigs.insert(config); 107 } 108 return NO_ERROR; 109 } 110
