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j9nlshelpers.c
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j9nlshelpers.c
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/*******************************************************************************
* Copyright IBM Corp. and others 1991
*
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which accompanies this
* distribution and is available at https://www.eclipse.org/legal/epl-2.0/
* or the Apache License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the following
* Secondary Licenses when the conditions for such availability set
* forth in the Eclipse Public License, v. 2.0 are satisfied: GNU
* General Public License, version 2 with the GNU Classpath
* Exception [1] and GNU General Public License, version 2 with the
* OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] https://openjdk.org/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
*******************************************************************************/
/**
* @internal @file
* @ingroup Port
* @brief Native language support helpers
*/
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <utime.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <locale.h>
#include <langinfo.h>
#include "omrport.h"
#include "omrportpriv.h"
#include "omrutil.h"
void nls_determine_locale(struct OMRPortLibrary *portLibrary);
static char
nls_tolower(char toConvert)
{
char lower;
#if !defined(J9ZOS390)
lower = j9_ascii_tolower(toConvert);
#else
/* check to see if it is an uppercase character, and if so, return the corresponding lowercase char */
if ((0x41 <= toConvert) && (toConvert <= 0x5a)) {
lower = toConvert + 0x20;
} else {
lower = toConvert;
}
#endif
return lower;
}
/**
* @internal
* Set set locale.
*
* @param[in] portLibrary The port library
*/
void
nls_determine_locale(struct OMRPortLibrary *portLibrary)
{
J9NLSDataCache *nls = &portLibrary->portGlobals->nls_data;
char languageProp[4] = "en";
char regionProp[4] = "US";
char *lang = NULL;
int langlen = 0;
#if defined(LINUX) || defined(OSX)
intptr_t result;
char langProp[24];
#endif /* defined(LINUX) || defined(OSX) */
intptr_t countryStart = 2;
/* Get the language */
/* Set locale, returns NULL in case locale data cannot be initialized. This may indicate
* that the locale is not installed OR not selected & generated (see /etc/locale.gen) */
setlocale(LC_ALL, "");
#if defined(LINUX) || defined(OSX)
lang = setlocale(LC_CTYPE, NULL);
/* set lang for later usage, we cannot use the return of setlocale(LC_ALL, "") as its not
* the correct interface to retrieve it (lang/region) */
/*[PR 104520] Use LANG environment variable when locale cannot be obtained */
if (!lang || !strcmp(lang, "C") || !strcmp(lang, "POSIX")) {
result = omrsysinfo_get_env(portLibrary, "LANG", langProp, sizeof(langProp));
if (!result && !strcmp(langProp, "ja")) {
strcat(langProp, "_JP");
lang = langProp;
}
}
#else /* defined(LINUX) || defined(OSX) */
/* Query locale data */
lang = setlocale(LC_CTYPE, NULL);
#if defined (J9ZOS390)
if (NULL != lang) {
/* CMVC 107274: z/OS sometimes returns the HFS path to a "locale object" so carve it up to make it look like the corresponding locale name */
char *lastSlash = strrchr(lang, '/');
if (NULL != lastSlash) {
lang = lastSlash + 1;
}
}
#endif /* defined (J9ZOS390) */
#endif /* defined(LINUX) || defined(OSX) */
if ((NULL != lang)
&& (0 != strcmp(lang, "POSIX"))
&& (0 != strcmp(lang, "C"))
&& (0 != strncmp(lang, "C.", 2))
&& (0 != strcmp(lang, "UTF-8"))
) {
if ((NULL != lang) && ((langlen = strlen(lang)) >= 2)) {
/* copy the language, stopping at '_'
* CMVC 145188 - language locale must be lowercase
*/
languageProp[0] = nls_tolower(lang[0]);
languageProp[1] = nls_tolower(lang[1]);
if (lang[2] != '_') {
languageProp[2] = nls_tolower(lang[2]);
countryStart++;
}
}
}
if (!strcmp(languageProp, "jp")) {
languageProp[1] = 'a';
}
/* J9NLSDataCache language is 4 bytes long */
strncpy(nls->language, languageProp, 4);
/* Get the region */
if (langlen >= (3 + countryStart) && lang[countryStart] == '_') {
regionProp[0] = lang[countryStart + 1];
regionProp[1] = lang[countryStart + 2];
}
/* J9NLSDataCache region is 4 bytes long */
strncpy(nls->region, regionProp, 4);
}