225 lines
6.6 KiB
C++
225 lines
6.6 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <locale.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <time.h>
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#include <wchar.h>
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#include "private/bionic_macros.h"
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// We currently support a single locale, the "C" locale (also known as "POSIX").
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static bool __bionic_current_locale_is_utf8 = true;
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struct __locale_t {
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size_t mb_cur_max;
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explicit __locale_t(size_t mb_cur_max) : mb_cur_max(mb_cur_max) {
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}
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explicit __locale_t(const __locale_t* other) {
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if (other == LC_GLOBAL_LOCALE) {
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mb_cur_max = __bionic_current_locale_is_utf8 ? 4 : 1;
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} else {
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mb_cur_max = other->mb_cur_max;
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}
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}
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DISALLOW_COPY_AND_ASSIGN(__locale_t);
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};
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size_t __ctype_get_mb_cur_max() {
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locale_t l = uselocale(NULL);
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if (l == LC_GLOBAL_LOCALE) {
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return __bionic_current_locale_is_utf8 ? 4 : 1;
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} else {
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return l->mb_cur_max;
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}
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}
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static pthread_once_t g_locale_once = PTHREAD_ONCE_INIT;
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static lconv g_locale;
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static void __locale_init() {
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g_locale.decimal_point = const_cast<char*>(".");
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char* not_available = const_cast<char*>("");
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g_locale.thousands_sep = not_available;
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g_locale.grouping = not_available;
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g_locale.int_curr_symbol = not_available;
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g_locale.currency_symbol = not_available;
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g_locale.mon_decimal_point = not_available;
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g_locale.mon_thousands_sep = not_available;
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g_locale.mon_grouping = not_available;
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g_locale.positive_sign = not_available;
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g_locale.negative_sign = not_available;
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g_locale.int_frac_digits = CHAR_MAX;
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g_locale.frac_digits = CHAR_MAX;
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g_locale.p_cs_precedes = CHAR_MAX;
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g_locale.p_sep_by_space = CHAR_MAX;
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g_locale.n_cs_precedes = CHAR_MAX;
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g_locale.n_sep_by_space = CHAR_MAX;
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g_locale.p_sign_posn = CHAR_MAX;
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g_locale.n_sign_posn = CHAR_MAX;
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g_locale.int_p_cs_precedes = CHAR_MAX;
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g_locale.int_p_sep_by_space = CHAR_MAX;
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g_locale.int_n_cs_precedes = CHAR_MAX;
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g_locale.int_n_sep_by_space = CHAR_MAX;
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g_locale.int_p_sign_posn = CHAR_MAX;
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g_locale.int_n_sign_posn = CHAR_MAX;
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}
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static bool __is_supported_locale(const char* locale) {
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return (strcmp(locale, "") == 0 ||
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strcmp(locale, "C") == 0 ||
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strcmp(locale, "C.UTF-8") == 0 ||
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strcmp(locale, "en_US.UTF-8") == 0 ||
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strcmp(locale, "POSIX") == 0);
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}
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lconv* localeconv() {
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pthread_once(&g_locale_once, __locale_init);
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return &g_locale;
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}
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locale_t duplocale(locale_t l) {
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return new __locale_t(l);
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}
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void freelocale(locale_t l) {
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delete l;
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}
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locale_t newlocale(int category_mask, const char* locale_name, locale_t /*base*/) {
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// Are 'category_mask' and 'locale_name' valid?
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if ((category_mask & ~LC_ALL_MASK) != 0 || locale_name == NULL) {
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errno = EINVAL;
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return NULL;
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}
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if (!__is_supported_locale(locale_name)) {
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errno = ENOENT;
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return NULL;
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}
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return new __locale_t(strstr(locale_name, "UTF-8") != NULL ? 4 : 1);
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}
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char* setlocale(int category, const char* locale_name) {
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// Is 'category' valid?
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if (category < LC_CTYPE || category > LC_IDENTIFICATION) {
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errno = EINVAL;
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return NULL;
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}
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// Caller wants to set the locale rather than just query?
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if (locale_name != NULL) {
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if (!__is_supported_locale(locale_name)) {
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// We don't support this locale.
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errno = ENOENT;
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return NULL;
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}
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__bionic_current_locale_is_utf8 = (strstr(locale_name, "UTF-8") != NULL);
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}
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return const_cast<char*>(__bionic_current_locale_is_utf8 ? "C.UTF-8" : "C");
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}
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// We can't use a constructor to create g_uselocal_key, because it may be used in constructors.
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static pthread_once_t g_uselocale_once = PTHREAD_ONCE_INIT;
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static pthread_key_t g_uselocale_key;
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static void g_uselocale_key_init() {
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pthread_key_create(&g_uselocale_key, NULL);
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}
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locale_t uselocale(locale_t new_locale) {
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pthread_once(&g_uselocale_once, g_uselocale_key_init);
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locale_t old_locale = static_cast<locale_t>(pthread_getspecific(g_uselocale_key));
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// If this is the first call to uselocale(3) on this thread, we return LC_GLOBAL_LOCALE.
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if (old_locale == NULL) {
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old_locale = LC_GLOBAL_LOCALE;
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}
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if (new_locale != NULL) {
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pthread_setspecific(g_uselocale_key, new_locale);
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}
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return old_locale;
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}
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int strcasecmp_l(const char* s1, const char* s2, locale_t) {
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return strcasecmp(s1, s2);
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}
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int strcoll_l(const char* s1, const char* s2, locale_t) {
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return strcoll(s1, s2);
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}
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char* strerror_l(int error, locale_t) {
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return strerror(error);
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}
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size_t strftime_l(char* s, size_t max, const char* format, const struct tm* tm, locale_t) {
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return strftime(s, max, format, tm);
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}
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int strncasecmp_l(const char* s1, const char* s2, size_t n, locale_t) {
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return strncasecmp(s1, s2, n);
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}
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long double strtold_l(const char* s, char** end_ptr, locale_t) {
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return strtold(s, end_ptr);
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}
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long long strtoll_l(const char* s, char** end_ptr, int base, locale_t) {
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return strtoll(s, end_ptr, base);
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}
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unsigned long long strtoull_l(const char* s, char** end_ptr, int base, locale_t) {
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return strtoull(s, end_ptr, base);
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}
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size_t strxfrm_l(char* dst, const char* src, size_t n, locale_t) {
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return strxfrm(dst, src, n);
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}
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int wcscasecmp_l(const wchar_t* ws1, const wchar_t* ws2, locale_t) {
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return wcscasecmp(ws1, ws2);
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}
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int wcsncasecmp_l(const wchar_t* ws1, const wchar_t* ws2, size_t n, locale_t) {
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return wcsncasecmp(ws1, ws2, n);
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}
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