diff --git a/libc/bionic/locale.cpp b/libc/bionic/locale.cpp new file mode 100644 index 0000000..4fade84 --- /dev/null +++ b/libc/bionic/locale.cpp @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +#include +#include + +// We currently support a single locale, the "C" locale (also known as "POSIX"). + +struct __locale_t { + // Because we only support one locale, these are just tokens with no data. +}; + +static pthread_once_t gLocaleOnce = PTHREAD_ONCE_INIT; +static lconv gLocale; + +static pthread_once_t gUselocaleKeyOnce = PTHREAD_ONCE_INIT; +static pthread_key_t gUselocaleKey; + +static void __locale_init() { + gLocale.decimal_point = const_cast("."); + + char* not_available = const_cast(""); + gLocale.thousands_sep = not_available; + gLocale.grouping = not_available; + gLocale.int_curr_symbol = not_available; + gLocale.currency_symbol = not_available; + gLocale.mon_decimal_point = not_available; + gLocale.mon_thousands_sep = not_available; + gLocale.mon_grouping = not_available; + gLocale.positive_sign = not_available; + gLocale.negative_sign = not_available; + + gLocale.int_frac_digits = CHAR_MAX; + gLocale.frac_digits = CHAR_MAX; + gLocale.p_cs_precedes = CHAR_MAX; + gLocale.p_sep_by_space = CHAR_MAX; + gLocale.n_cs_precedes = CHAR_MAX; + gLocale.n_sep_by_space = CHAR_MAX; + gLocale.p_sign_posn = CHAR_MAX; + gLocale.n_sign_posn = CHAR_MAX; + gLocale.int_p_cs_precedes = CHAR_MAX; + gLocale.int_p_sep_by_space = CHAR_MAX; + gLocale.int_n_cs_precedes = CHAR_MAX; + gLocale.int_n_sep_by_space = CHAR_MAX; + gLocale.int_p_sign_posn = CHAR_MAX; + gLocale.int_n_sign_posn = CHAR_MAX; +} + +static void __uselocale_key_init() { + pthread_key_create(&gUselocaleKey, NULL); +} + +static bool __is_supported_locale(const char* locale) { + return (strcmp(locale, "") == 0 || strcmp(locale, "C") == 0 || strcmp(locale, "POSIX") == 0); +} + +static locale_t __new_locale() { + return reinterpret_cast(malloc(sizeof(__locale_t))); +} + +lconv* localeconv() { + pthread_once(&gLocaleOnce, __locale_init); + return &gLocale; +} + +locale_t duplocale(locale_t l) { + locale_t clone = __new_locale(); + if (clone != NULL && l != LC_GLOBAL_LOCALE) { + *clone = *l; + } + return clone; +} + +void freelocale(locale_t l) { + free(l); +} + +locale_t newlocale(int category_mask, const char* locale_name, locale_t /*base*/) { + // Is 'category_mask' valid? + if ((category_mask & ~LC_ALL_MASK) != 0) { + errno = EINVAL; + return NULL; + } + + if (!__is_supported_locale(locale_name)) { + errno = ENOENT; + return NULL; + } + + return __new_locale(); +} + +char* setlocale(int category, char const* locale_name) { + // Is 'category' valid? + if (category < LC_CTYPE || category > LC_IDENTIFICATION) { + errno = EINVAL; + return NULL; + } + + // Caller just wants to query the current locale? + if (locale_name == NULL) { + return const_cast("C"); + } + + // Caller wants one of the mandatory POSIX locales? + if (__is_supported_locale(locale_name)) { + return const_cast("C"); + } + + // We don't support any other locales. + errno = ENOENT; + return NULL; +} + +locale_t uselocale(locale_t new_locale) { + pthread_once(&gUselocaleKeyOnce, __uselocale_key_init); + + locale_t old_locale = static_cast(pthread_getspecific(gUselocaleKey)); + + // If this is the first call to uselocale(3) on this thread, we return LC_GLOBAL_LOCALE. + if (old_locale == NULL) { + old_locale = LC_GLOBAL_LOCALE; + } + + if (new_locale != NULL) { + pthread_setspecific(gUselocaleKey, new_locale); + } + + return old_locale; +} diff --git a/libc/include/xlocale.h b/libc/include/xlocale.h new file mode 100644 index 0000000..f7eb8f4 --- /dev/null +++ b/libc/include/xlocale.h @@ -0,0 +1,36 @@ +/* + * Copyright (C) 2014 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef _XLOCALE_H_ +#define _XLOCALE_H_ + +/* If we just use void* here, GCC exposes that in error messages. */ +struct __locale_t; +typedef struct __locale_t* locale_t; + +#endif /* _XLOCALE_H_ */