diff options
Diffstat (limited to 'locale/lc-time.c')
| -rw-r--r-- | locale/lc-time.c | 156 |
1 files changed, 155 insertions, 1 deletions
diff --git a/locale/lc-time.c b/locale/lc-time.c index 7b84f99..f4fe561 100644 --- a/locale/lc-time.c +++ b/locale/lc-time.c @@ -1,5 +1,5 @@ /* Define current locale data for LC_TIME category. -Copyright (C) 1995 Free Software Foundation, Inc. +Copyright (C) 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,6 +17,160 @@ License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include <libc-lock.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> #include "localeinfo.h" _NL_CURRENT_DEFINE (LC_TIME); + +/* Some of the functions here must not be used while setlocale is called. */ +__libc_lock_define (extern, __libc_setlocale_lock) + + +static int era_initialized; +static struct era_entry **eras; +static size_t num_eras; + + +static int alt_digits_initialized; +static const char **alt_digits; +static size_t num_alt_digits; + + +void +_nl_postload_time (void) +{ + /* Prepare lazy initialization of `era' and `alt_digits' array. */ + era_initialized = 0; + alt_digits_initialized = 0; +} + + +struct era_entry * +_nl_get_era_entry (const struct tm *tp) +{ + struct era_entry *result; + size_t cnt; + + __libc_lock_lock (__libc_setlocale_lock); + + if (era_initialized == 0) + { + size_t new_num_eras = _NL_CURRENT_WORD (LC_TIME, + _NL_TIME_ERA_NUM_ENTRIES); + + if (eras != NULL && new_num_eras == 0) + { + free (eras); + eras = NULL; + } + else if (new_num_eras != 0) + { + if (num_eras != new_num_eras) + eras = realloc (eras, new_num_eras * sizeof (struct era_entry *)); + + if (eras == NULL) + num_eras = 0; + else + { +#if __BYTE_ORDER == __LITTLE_ENDIAN + const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES_EL); +#else + const char *ptr = _NL_CURRENT (LC_TIME, _NL_TIME_ERA_ENTRIES_EB); +#endif + num_eras = new_num_eras; + + for (cnt = 0; cnt < num_eras; ++cnt) + { + eras[cnt] = (struct era_entry *) ptr; + + /* Skip numeric values. */ + ptr += sizeof (struct era_entry); + /* Skip era name. */ + ptr = strchr (ptr, '\0') + 1; + /* Skip era format. */ + ptr = strchr (ptr, '\0') + 1; + + ptr += 3 - (((ptr - (const char *) eras[cnt]) + 3) & 3); + } + } + } + + era_initialized = 1; + } + + /* Now compare date with the available eras. */ + for (cnt = 0; cnt < num_eras; ++cnt) + if ((eras[cnt]->start_date[0] < tp->tm_year + || (eras[cnt]->start_date[0] == tp->tm_year + && (eras[cnt]->start_date[1] < tp->tm_mon + || (eras[cnt]->start_date[1] == tp->tm_mon + && eras[cnt]->start_date[2] <= tp->tm_mday)))) + && (eras[cnt]->stop_date[0] > tp->tm_year + || (eras[cnt]->stop_date[0] == tp->tm_year + && (eras[cnt]->stop_date[1] > tp->tm_mon + || (eras[cnt]->stop_date[1] == tp->tm_mon + && eras[cnt]->stop_date[2] >= tp->tm_mday))))) + break; + + result = cnt < num_eras ? eras[cnt] : NULL; + + __libc_lock_unlock (__libc_setlocale_lock); + + return result; +} + + +const char * +_nl_get_alt_digit (unsigned int number) +{ + const char *result; + + __libc_lock_lock (__libc_setlocale_lock); + + if (alt_digits_initialized == 0) + { + size_t new_num_alt_digits = _NL_CURRENT_WORD (LC_TIME, + _NL_TIME_NUM_ALT_DIGITS); + + if (alt_digits != NULL && new_num_alt_digits == 0) + { + free (alt_digits); + alt_digits = NULL; + } + else if (new_num_alt_digits != 0) + { + if (num_alt_digits != new_num_alt_digits) + alt_digits = realloc (alt_digits, (new_num_alt_digits + * sizeof (const char *))); + + if (alt_digits == NULL) + num_alt_digits = 0; + else + { + const char *ptr = _NL_CURRENT (LC_TIME, ALT_DIGITS); + size_t cnt; + + num_alt_digits = new_num_alt_digits; + + for (cnt = 0; cnt < num_alt_digits; ++cnt) + { + alt_digits[cnt] = ptr; + + /* Skip digit format. */ + ptr = strchr (ptr, '\0') + 1; + } + } + } + + alt_digits_initialized = 1; + } + + result = number < num_alt_digits ? alt_digits[number] : NULL; + + __libc_lock_unlock (__libc_setlocale_lock); + + return result; +} |