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