1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/intl/icu/source/common/locavailable.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,179 @@
1.4 +/*
1.5 +*******************************************************************************
1.6 +*
1.7 +* Copyright (C) 1997-2013, International Business Machines
1.8 +* Corporation and others. All Rights Reserved.
1.9 +*
1.10 +*******************************************************************************
1.11 +* file name: locavailable.cpp
1.12 +* encoding: US-ASCII
1.13 +* tab size: 8 (not used)
1.14 +* indentation:4
1.15 +*
1.16 +* created on: 2010feb25
1.17 +* created by: Markus W. Scherer
1.18 +*
1.19 +* Code for available locales, separated out from other .cpp files
1.20 +* that then do not depend on resource bundle code and res_index bundles.
1.21 +*/
1.22 +
1.23 +#include "unicode/utypes.h"
1.24 +#include "unicode/locid.h"
1.25 +#include "unicode/uloc.h"
1.26 +#include "unicode/ures.h"
1.27 +#include "cmemory.h"
1.28 +#include "ucln_cmn.h"
1.29 +#include "uassert.h"
1.30 +#include "umutex.h"
1.31 +#include "uresimp.h"
1.32 +
1.33 +// C++ API ----------------------------------------------------------------- ***
1.34 +
1.35 +U_NAMESPACE_BEGIN
1.36 +
1.37 +static icu::Locale* availableLocaleList = NULL;
1.38 +static int32_t availableLocaleListCount;
1.39 +static icu::UInitOnce gInitOnce = U_INITONCE_INITIALIZER;
1.40 +
1.41 +U_NAMESPACE_END
1.42 +
1.43 +U_CDECL_BEGIN
1.44 +
1.45 +static UBool U_CALLCONV locale_available_cleanup(void)
1.46 +{
1.47 + U_NAMESPACE_USE
1.48 +
1.49 + if (availableLocaleList) {
1.50 + delete []availableLocaleList;
1.51 + availableLocaleList = NULL;
1.52 + }
1.53 + availableLocaleListCount = 0;
1.54 + gInitOnce.reset();
1.55 +
1.56 + return TRUE;
1.57 +}
1.58 +
1.59 +U_CDECL_END
1.60 +
1.61 +U_NAMESPACE_BEGIN
1.62 +
1.63 +void U_CALLCONV locale_available_init() {
1.64 + // This function is a friend of class Locale.
1.65 + // This function is only invoked via umtx_initOnce().
1.66 +
1.67 + // for now, there is a hardcoded list, so just walk through that list and set it up.
1.68 + // Note: this function is a friend of class Locale.
1.69 + availableLocaleListCount = uloc_countAvailable();
1.70 + if(availableLocaleListCount) {
1.71 + availableLocaleList = new Locale[availableLocaleListCount];
1.72 + }
1.73 + if (availableLocaleList == NULL) {
1.74 + availableLocaleListCount= 0;
1.75 + }
1.76 + for (int32_t locCount=availableLocaleListCount-1; locCount>=0; --locCount) {
1.77 + availableLocaleList[locCount].setFromPOSIXID(uloc_getAvailable(locCount));
1.78 + }
1.79 + ucln_common_registerCleanup(UCLN_COMMON_LOCALE_AVAILABLE, locale_available_cleanup);
1.80 +}
1.81 +
1.82 +const Locale* U_EXPORT2
1.83 +Locale::getAvailableLocales(int32_t& count)
1.84 +{
1.85 + umtx_initOnce(gInitOnce, &locale_available_init);
1.86 + count = availableLocaleListCount;
1.87 + return availableLocaleList;
1.88 +}
1.89 +
1.90 +
1.91 +U_NAMESPACE_END
1.92 +
1.93 +// C API ------------------------------------------------------------------- ***
1.94 +
1.95 +U_NAMESPACE_USE
1.96 +
1.97 +/* ### Constants **************************************************/
1.98 +
1.99 +/* These strings describe the resources we attempt to load from
1.100 + the locale ResourceBundle data file.*/
1.101 +static const char _kIndexLocaleName[] = "res_index";
1.102 +static const char _kIndexTag[] = "InstalledLocales";
1.103 +
1.104 +static char** _installedLocales = NULL;
1.105 +static int32_t _installedLocalesCount = 0;
1.106 +static icu::UInitOnce _installedLocalesInitOnce;
1.107 +
1.108 +/* ### Get available **************************************************/
1.109 +
1.110 +static UBool U_CALLCONV uloc_cleanup(void) {
1.111 + char ** temp;
1.112 +
1.113 + if (_installedLocales) {
1.114 + temp = _installedLocales;
1.115 + _installedLocales = NULL;
1.116 +
1.117 + _installedLocalesCount = 0;
1.118 + _installedLocalesInitOnce.reset();
1.119 +
1.120 + uprv_free(temp);
1.121 + }
1.122 + return TRUE;
1.123 +}
1.124 +
1.125 +// Load Installed Locales. This function will be called exactly once
1.126 +// via the initOnce mechanism.
1.127 +
1.128 +static void U_CALLCONV loadInstalledLocales() {
1.129 + UResourceBundle *indexLocale = NULL;
1.130 + UResourceBundle installed;
1.131 + UErrorCode status = U_ZERO_ERROR;
1.132 + int32_t i = 0;
1.133 + int32_t localeCount;
1.134 +
1.135 + U_ASSERT(_installedLocales == NULL);
1.136 + U_ASSERT(_installedLocalesCount == 0);
1.137 +
1.138 + _installedLocalesCount = 0;
1.139 + ures_initStackObject(&installed);
1.140 + indexLocale = ures_openDirect(NULL, _kIndexLocaleName, &status);
1.141 + ures_getByKey(indexLocale, _kIndexTag, &installed, &status);
1.142 +
1.143 + if(U_SUCCESS(status)) {
1.144 + localeCount = ures_getSize(&installed);
1.145 + _installedLocales = (char **) uprv_malloc(sizeof(char*) * (localeCount+1));
1.146 + if (_installedLocales != NULL) {
1.147 + ures_resetIterator(&installed);
1.148 + while(ures_hasNext(&installed)) {
1.149 + ures_getNextString(&installed, NULL, (const char **)&_installedLocales[i++], &status);
1.150 + }
1.151 + _installedLocales[i] = NULL;
1.152 + _installedLocalesCount = localeCount;
1.153 + ucln_common_registerCleanup(UCLN_COMMON_ULOC, uloc_cleanup);
1.154 + }
1.155 + }
1.156 + ures_close(&installed);
1.157 + ures_close(indexLocale);
1.158 +}
1.159 +
1.160 +static void _load_installedLocales()
1.161 +{
1.162 + umtx_initOnce(_installedLocalesInitOnce, &loadInstalledLocales);
1.163 +}
1.164 +
1.165 +U_CAPI const char* U_EXPORT2
1.166 +uloc_getAvailable(int32_t offset)
1.167 +{
1.168 +
1.169 + _load_installedLocales();
1.170 +
1.171 + if (offset > _installedLocalesCount)
1.172 + return NULL;
1.173 + return _installedLocales[offset];
1.174 +}
1.175 +
1.176 +U_CAPI int32_t U_EXPORT2
1.177 +uloc_countAvailable()
1.178 +{
1.179 + _load_installedLocales();
1.180 + return _installedLocalesCount;
1.181 +}
1.182 +
