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intl/icu/source/common/locavailable.cpp@fc2d59ddac77 (annotated)

intl/icu/source/common/locavailable.cpp

Wed, 31 Dec 2014 07:22:50 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 07:22:50 +0100
branch
TOR_BUG_3246
changeset 4
fc2d59ddac77
permissions
-rw-r--r--

Correct previous dual key logic pending first delivery installment.

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

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