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Make to_char()'s localized month/day names depend on LC_TIME, not LC_MESSAGES.

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Euler Taveira de Oliveira
This commit is contained in:
Tom Lane
2008-05-19 18:08:16 +00:00
parent 63e98b55f0
commit 07a5606735
6 changed files with 251 additions and 274 deletions
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93
src/backend/utils/adt/pg_locale.c
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@ -4,7 +4,7 @@
*
* Portions Copyright (c) 2002-2008, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.40 2008/01/01 19:45:52 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.41 2008/05/19 18:08:16 tgl Exp $
*
*-----------------------------------------------------------------------
*/
@ -48,20 +48,31 @@
#include "postgres.h"
#include <locale.h>
#include <time.h>
#include "catalog/pg_control.h"
#include "utils/memutils.h"
#include "utils/pg_locale.h"
/* GUC storage area */
#define MAX_L10N_DATA 80
/* GUC settings */
char *locale_messages;
char *locale_monetary;
char *locale_numeric;
char *locale_time;
/* lc_time localization cache */
char *localized_abbrev_days[7];
char *localized_full_days[7];
char *localized_abbrev_months[12];
char *localized_full_months[12];
/* indicates whether locale information cache is valid */
static bool CurrentLocaleConvValid = false;
static bool CurrentLCTimeValid = false;
/* Environment variable storage area */
@ -209,7 +220,10 @@ locale_xxx_assign(int category, const char *value, bool doit, GucSource source)
/* need to reload cache next time? */
if (doit && value != NULL)
{
CurrentLocaleConvValid = false;
CurrentLCTimeValid = false;
}
return value;
}
@ -424,3 +438,78 @@ PGLC_localeconv(void)
CurrentLocaleConvValid = true;
return &CurrentLocaleConv;
}
/*
* Update the lc_time localization cache variables if needed.
*/
void
cache_locale_time(void)
{
char *save_lc_time;
time_t timenow;
struct tm *timeinfo;
char buf[MAX_L10N_DATA];
char *ptr;
int i;
/* did we do this already? */
if (CurrentLCTimeValid)
return;
elog(DEBUG3, "cache_locale_time() executed; locale: \"%s\"", locale_time);
/* set user's value of time locale */
save_lc_time = setlocale(LC_TIME, NULL);
if (save_lc_time)
save_lc_time = pstrdup(save_lc_time);
setlocale(LC_TIME, locale_time);
timenow = time(NULL);
timeinfo = localtime(&timenow);
/* localized days */
for (i = 0; i < 7; i++)
{
timeinfo->tm_wday = i;
strftime(buf, MAX_L10N_DATA, "%a", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_abbrev_days[i])
pfree(localized_abbrev_days[i]);
localized_abbrev_days[i] = ptr;
strftime(buf, MAX_L10N_DATA, "%A", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_full_days[i])
pfree(localized_full_days[i]);
localized_full_days[i] = ptr;
}
/* localized months */
for (i = 0; i < 12; i++)
{
timeinfo->tm_mon = i;
timeinfo->tm_mday = 1; /* make sure we don't have invalid date */
strftime(buf, MAX_L10N_DATA, "%b", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_abbrev_months[i])
pfree(localized_abbrev_months[i]);
localized_abbrev_months[i] = ptr;
strftime(buf, MAX_L10N_DATA, "%B", timeinfo);
ptr = MemoryContextStrdup(TopMemoryContext, buf);
if (localized_full_months[i])
pfree(localized_full_months[i]);
localized_full_months[i] = ptr;
}
/* try to restore internal settings */
if (save_lc_time)
{
setlocale(LC_TIME, save_lc_time);
pfree(save_lc_time);
}
CurrentLCTimeValid = true;
}