188 lines
4.9 KiB
C++
188 lines
4.9 KiB
C++
/*
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*******************************************************************************
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*
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* Copyright (C) 1997-2011, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: locavailable.cpp
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:4
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*
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* created on: 2010feb25
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* created by: Markus W. Scherer
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*
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* Code for available locales, separated out from other .cpp files
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* that then do not depend on resource bundle code and res_index bundles.
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*/
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#include "unicode/utypes.h"
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#include "unicode/locid.h"
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#include "unicode/uloc.h"
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#include "unicode/ures.h"
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#include "cmemory.h"
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#include "ucln_cmn.h"
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#include "umutex.h"
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#include "uresimp.h"
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// C++ API ----------------------------------------------------------------- ***
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static icu::Locale* availableLocaleList = NULL;
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static int32_t availableLocaleListCount;
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U_CDECL_BEGIN
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static UBool U_CALLCONV locale_available_cleanup(void)
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{
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U_NAMESPACE_USE
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if (availableLocaleList) {
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delete []availableLocaleList;
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availableLocaleList = NULL;
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}
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availableLocaleListCount = 0;
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return TRUE;
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}
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U_CDECL_END
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U_NAMESPACE_BEGIN
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const Locale* U_EXPORT2
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Locale::getAvailableLocales(int32_t& count)
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{
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// for now, there is a hardcoded list, so just walk through that list and set it up.
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UBool needInit;
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UMTX_CHECK(NULL, availableLocaleList == NULL, needInit);
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if (needInit) {
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int32_t locCount = uloc_countAvailable();
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Locale *newLocaleList = 0;
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if(locCount) {
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newLocaleList = new Locale[locCount];
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}
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if (newLocaleList == NULL) {
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count = 0;
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return NULL;
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}
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count = locCount;
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while(--locCount >= 0) {
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newLocaleList[locCount].setFromPOSIXID(uloc_getAvailable(locCount));
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}
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umtx_lock(NULL);
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if(availableLocaleList == 0) {
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availableLocaleListCount = count;
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availableLocaleList = newLocaleList;
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newLocaleList = NULL;
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ucln_common_registerCleanup(UCLN_COMMON_LOCALE_AVAILABLE, locale_available_cleanup);
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}
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umtx_unlock(NULL);
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delete []newLocaleList;
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}
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count = availableLocaleListCount;
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return availableLocaleList;
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}
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U_NAMESPACE_END
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// C API ------------------------------------------------------------------- ***
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U_NAMESPACE_USE
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/* ### Constants **************************************************/
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/* These strings describe the resources we attempt to load from
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the locale ResourceBundle data file.*/
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static const char _kIndexLocaleName[] = "res_index";
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static const char _kIndexTag[] = "InstalledLocales";
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static char** _installedLocales = NULL;
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static int32_t _installedLocalesCount = 0;
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/* ### Get available **************************************************/
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static UBool U_CALLCONV uloc_cleanup(void) {
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char ** temp;
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if (_installedLocales) {
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temp = _installedLocales;
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_installedLocales = NULL;
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_installedLocalesCount = 0;
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uprv_free(temp);
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}
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return TRUE;
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}
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static void _load_installedLocales()
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{
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UBool localesLoaded;
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UMTX_CHECK(NULL, _installedLocales != NULL, localesLoaded);
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if (localesLoaded == FALSE) {
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UResourceBundle *indexLocale = NULL;
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UResourceBundle installed;
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UErrorCode status = U_ZERO_ERROR;
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char ** temp;
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int32_t i = 0;
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int32_t localeCount;
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ures_initStackObject(&installed);
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indexLocale = ures_openDirect(NULL, _kIndexLocaleName, &status);
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ures_getByKey(indexLocale, _kIndexTag, &installed, &status);
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if(U_SUCCESS(status)) {
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localeCount = ures_getSize(&installed);
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temp = (char **) uprv_malloc(sizeof(char*) * (localeCount+1));
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/* Check for null pointer */
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if (temp != NULL) {
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ures_resetIterator(&installed);
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while(ures_hasNext(&installed)) {
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ures_getNextString(&installed, NULL, (const char **)&temp[i++], &status);
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}
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temp[i] = NULL;
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umtx_lock(NULL);
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if (_installedLocales == NULL)
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{
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_installedLocalesCount = localeCount;
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_installedLocales = temp;
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temp = NULL;
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ucln_common_registerCleanup(UCLN_COMMON_ULOC, uloc_cleanup);
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}
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umtx_unlock(NULL);
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uprv_free(temp);
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}
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}
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ures_close(&installed);
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ures_close(indexLocale);
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}
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}
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U_CAPI const char* U_EXPORT2
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uloc_getAvailable(int32_t offset)
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{
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_load_installedLocales();
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if (offset > _installedLocalesCount)
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return NULL;
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return _installedLocales[offset];
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}
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U_CAPI int32_t U_EXPORT2
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uloc_countAvailable()
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{
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_load_installedLocales();
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return _installedLocalesCount;
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}
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