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comparison: intl/icu/source/common/locavailable.cpp
intl/icu/source/common/locavailable.cpp
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:5a7c3ebe4d31 |
|---|---|
| 1 /* | |
| 2 ******************************************************************************* | |
| 3 * | |
| 4 * Copyright (C) 1997-2013, International Business Machines | |
| 5 * Corporation and others. All Rights Reserved. | |
| 6 * | |
| 7 ******************************************************************************* | |
| 8 * file name: locavailable.cpp | |
| 9 * encoding: US-ASCII | |
| 10 * tab size: 8 (not used) | |
| 11 * indentation:4 | |
| 12 * | |
| 13 * created on: 2010feb25 | |
| 14 * created by: Markus W. Scherer | |
| 15 * | |
| 16 * Code for available locales, separated out from other .cpp files | |
| 17 * that then do not depend on resource bundle code and res_index bundles. | |
| 18 */ | |
| 19 | |
| 20 #include "unicode/utypes.h" | |
| 21 #include "unicode/locid.h" | |
| 22 #include "unicode/uloc.h" | |
| 23 #include "unicode/ures.h" | |
| 24 #include "cmemory.h" | |
| 25 #include "ucln_cmn.h" | |
| 26 #include "uassert.h" | |
| 27 #include "umutex.h" | |
| 28 #include "uresimp.h" | |
| 29 | |
| 30 // C++ API ----------------------------------------------------------------- *** | |
| 31 | |
| 32 U_NAMESPACE_BEGIN | |
| 33 | |
| 34 static icu::Locale* availableLocaleList = NULL; | |
| 35 static int32_t availableLocaleListCount; | |
| 36 static icu::UInitOnce gInitOnce = U_INITONCE_INITIALIZER; | |
| 37 | |
| 38 U_NAMESPACE_END | |
| 39 | |
| 40 U_CDECL_BEGIN | |
| 41 | |
| 42 static UBool U_CALLCONV locale_available_cleanup(void) | |
| 43 { | |
| 44 U_NAMESPACE_USE | |
| 45 | |
| 46 if (availableLocaleList) { | |
| 47 delete []availableLocaleList; | |
| 48 availableLocaleList = NULL; | |
| 49 } | |
| 50 availableLocaleListCount = 0; | |
| 51 gInitOnce.reset(); | |
| 52 | |
| 53 return TRUE; | |
| 54 } | |
| 55 | |
| 56 U_CDECL_END | |
| 57 | |
| 58 U_NAMESPACE_BEGIN | |
| 59 | |
| 60 void U_CALLCONV locale_available_init() { | |
| 61 // This function is a friend of class Locale. | |
| 62 // This function is only invoked via umtx_initOnce(). | |
| 63 | |
| 64 // for now, there is a hardcoded list, so just walk through that list and set it up. | |
| 65 // Note: this function is a friend of class Locale. | |
| 66 availableLocaleListCount = uloc_countAvailable(); | |
| 67 if(availableLocaleListCount) { | |
| 68 availableLocaleList = new Locale[availableLocaleListCount]; | |
| 69 } | |
| 70 if (availableLocaleList == NULL) { | |
| 71 availableLocaleListCount= 0; | |
| 72 } | |
| 73 for (int32_t locCount=availableLocaleListCount-1; locCount>=0; --locCount) { | |
| 74 availableLocaleList[locCount].setFromPOSIXID(uloc_getAvailable(locCount)); | |
| 75 } | |
| 76 ucln_common_registerCleanup(UCLN_COMMON_LOCALE_AVAILABLE, locale_available_cleanup); | |
| 77 } | |
| 78 | |
| 79 const Locale* U_EXPORT2 | |
| 80 Locale::getAvailableLocales(int32_t& count) | |
| 81 { | |
| 82 umtx_initOnce(gInitOnce, &locale_available_init); | |
| 83 count = availableLocaleListCount; | |
| 84 return availableLocaleList; | |
| 85 } | |
| 86 | |
| 87 | |
| 88 U_NAMESPACE_END | |
| 89 | |
| 90 // C API ------------------------------------------------------------------- *** | |
| 91 | |
| 92 U_NAMESPACE_USE | |
| 93 | |
| 94 /* ### Constants **************************************************/ | |
| 95 | |
| 96 /* These strings describe the resources we attempt to load from | |
| 97 the locale ResourceBundle data file.*/ | |
| 98 static const char _kIndexLocaleName[] = "res_index"; | |
| 99 static const char _kIndexTag[] = "InstalledLocales"; | |
| 100 | |
| 101 static char** _installedLocales = NULL; | |
| 102 static int32_t _installedLocalesCount = 0; | |
| 103 static icu::UInitOnce _installedLocalesInitOnce; | |
| 104 | |
| 105 /* ### Get available **************************************************/ | |
| 106 | |
| 107 static UBool U_CALLCONV uloc_cleanup(void) { | |
| 108 char ** temp; | |
| 109 | |
| 110 if (_installedLocales) { | |
| 111 temp = _installedLocales; | |
| 112 _installedLocales = NULL; | |
| 113 | |
| 114 _installedLocalesCount = 0; | |
| 115 _installedLocalesInitOnce.reset(); | |
| 116 | |
| 117 uprv_free(temp); | |
| 118 } | |
| 119 return TRUE; | |
| 120 } | |
| 121 | |
| 122 // Load Installed Locales. This function will be called exactly once | |
| 123 // via the initOnce mechanism. | |
| 124 | |
| 125 static void U_CALLCONV loadInstalledLocales() { | |
| 126 UResourceBundle *indexLocale = NULL; | |
| 127 UResourceBundle installed; | |
| 128 UErrorCode status = U_ZERO_ERROR; | |
| 129 int32_t i = 0; | |
| 130 int32_t localeCount; | |
| 131 | |
| 132 U_ASSERT(_installedLocales == NULL); | |
| 133 U_ASSERT(_installedLocalesCount == 0); | |
| 134 | |
| 135 _installedLocalesCount = 0; | |
| 136 ures_initStackObject(&installed); | |
| 137 indexLocale = ures_openDirect(NULL, _kIndexLocaleName, &status); | |
| 138 ures_getByKey(indexLocale, _kIndexTag, &installed, &status); | |
| 139 | |
| 140 if(U_SUCCESS(status)) { | |
| 141 localeCount = ures_getSize(&installed); | |
| 142 _installedLocales = (char **) uprv_malloc(sizeof(char*) * (localeCount+1)); | |
| 143 if (_installedLocales != NULL) { | |
| 144 ures_resetIterator(&installed); | |
| 145 while(ures_hasNext(&installed)) { | |
| 146 ures_getNextString(&installed, NULL, (const char **)&_installedLocales[i++], &status); | |
| 147 } | |
| 148 _installedLocales[i] = NULL; | |
| 149 _installedLocalesCount = localeCount; | |
| 150 ucln_common_registerCleanup(UCLN_COMMON_ULOC, uloc_cleanup); | |
| 151 } | |
| 152 } | |
| 153 ures_close(&installed); | |
| 154 ures_close(indexLocale); | |
| 155 } | |
| 156 | |
| 157 static void _load_installedLocales() | |
| 158 { | |
| 159 umtx_initOnce(_installedLocalesInitOnce, &loadInstalledLocales); | |
| 160 } | |
| 161 | |
| 162 U_CAPI const char* U_EXPORT2 | |
| 163 uloc_getAvailable(int32_t offset) | |
| 164 { | |
| 165 | |
| 166 _load_installedLocales(); | |
| 167 | |
| 168 if (offset > _installedLocalesCount) | |
| 169 return NULL; | |
| 170 return _installedLocales[offset]; | |
| 171 } | |
| 172 | |
| 173 U_CAPI int32_t U_EXPORT2 | |
| 174 uloc_countAvailable() | |
| 175 { | |
| 176 _load_installedLocales(); | |
| 177 return _installedLocalesCount; | |
| 178 } | |
| 179 |
