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Locale support is on by default. The choice of locale is done in initdb
and/or with GUC variables.
This commit is contained in:
Peter Eisentraut
@ -1,173 +1,144 @@
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/* -----------------------------------------------------------------------
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* pg_locale.c
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/*-----------------------------------------------------------------------
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*
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* The PostgreSQL locale utils.
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* PostgreSQL locale utilities
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*
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/pg_locale.c,v 1.16 2002/04/03 05:39:31 petere Exp $
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*
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* $Header: /cvsroot/pgsql/src/backend/utils/adt/pg_locale.c,v 1.15 2002/03/06 06:10:14 momjian Exp $
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* Portions Copyright (c) 2002, PostgreSQL Global Development Group
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*
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* Portions Copyright (c) 1999-2000, PostgreSQL Global Development Group
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*
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* Karel Zak
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*
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* -----------------------------------------------------------------------
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*-----------------------------------------------------------------------
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*/
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#include "postgres.h"
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#ifdef USE_LOCALE
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#include "utils/pg_locale.h"
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#include <locale.h>
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#include "utils/pg_locale.h"
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/* #define DEBUG_LOCALE_UTILS */
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/* GUC storage area */
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char * locale_messages;
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char * locale_monetary;
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char * locale_numeric;
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char * locale_time;
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static bool CurrentLocaleConvValid = false;
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static struct lconv CurrentLocaleConv;
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/* GUC parse hooks */
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static void PGLC_setlocale(PG_LocaleCategories *lc);
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/*------
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* Frees memory used in PG_LocaleCategories -- this memory is
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* allocated in PGLC_current().
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*------
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*/
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void
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PGLC_free_categories(PG_LocaleCategories *lc)
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{
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if (lc->lc_ctype)
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pfree(lc->lc_ctype);
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if (lc->lc_numeric)
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pfree(lc->lc_numeric);
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if (lc->lc_time)
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pfree(lc->lc_time);
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if (lc->lc_collate)
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pfree(lc->lc_collate);
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if (lc->lc_monetary);
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pfree(lc->lc_monetary);
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#ifdef LC_MESSAGES
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if (lc->lc_messages)
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pfree(lc->lc_messages);
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#endif
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}
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/*------
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* Return in PG_LocaleCategories the current locale settings.
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*
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* NB: strings are allocated in the current memory context!
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*------
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*/
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void
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PGLC_current(PG_LocaleCategories *lc)
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{
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lc->lang = getenv("LANG");
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lc->lc_ctype = pstrdup(setlocale(LC_CTYPE, NULL));
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lc->lc_numeric = pstrdup(setlocale(LC_NUMERIC, NULL));
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lc->lc_time = pstrdup(setlocale(LC_TIME, NULL));
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lc->lc_collate = pstrdup(setlocale(LC_COLLATE, NULL));
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lc->lc_monetary = pstrdup(setlocale(LC_MONETARY, NULL));
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#ifdef LC_MESSAGES
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lc->lc_messages = pstrdup(setlocale(LC_MESSAGES, NULL));
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#endif
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}
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#ifdef DEBUG_LOCALE_UTILS
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/*------
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* Print a PG_LocaleCategories struct as DEBUG
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*------
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*/
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static void
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PGLC_debug_lc(PG_LocaleCategories *lc)
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bool locale_messages_check(const char *proposed)
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{
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#ifdef LC_MESSAGES
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elog(LOG, "CURRENT LOCALE ENVIRONMENT:\n\nLANG: \t%s\nLC_CTYPE:\t%s\nLC_NUMERIC:\t%s\nLC_TIME:\t%s\nLC_COLLATE:\t%s\nLC_MONETARY:\t%s\nLC_MESSAGES:\t%s\n",
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lc->lang,
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lc->lc_ctype,
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lc->lc_numeric,
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lc->lc_time,
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lc->lc_collate,
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lc->lc_monetary,
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lc->lc_messages);
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return chklocale(LC_MESSAGES, proposed);
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#else
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elog(LOG, "CURRENT LOCALE ENVIRONMENT:\n\nLANG: \t%s\nLC_CTYPE:\t%s\nLC_NUMERIC:\t%s\nLC_TIME:\t%s\nLC_COLLATE:\t%s\nLC_MONETARY:\t%s\n",
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lc->lang,
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lc->lc_ctype,
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lc->lc_numeric,
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lc->lc_time,
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lc->lc_collate,
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lc->lc_monetary);
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/* We return true here so LC_MESSAGES can be set in the
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configuration file on every system. */
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return true;
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#endif
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}
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#endif
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/*------
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* Set locales via a PG_LocaleCategories struct
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*
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* NB: it would be very dangerous to set the locale values to any random
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* choice of locale, since that could cause indexes to become corrupt, etc.
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* Therefore this routine is NOT exported from this module. It should be
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* used only to restore previous locale settings during PGLC_localeconv.
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*------
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*/
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static void
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PGLC_setlocale(PG_LocaleCategories *lc)
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bool locale_monetary_check(const char *proposed)
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{
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if (!setlocale(LC_COLLATE, lc->lc_collate))
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elog(WARNING, "pg_setlocale(): 'LC_COLLATE=%s' cannot be honored.",
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lc->lc_collate);
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return chklocale(LC_MONETARY, proposed);
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}
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if (!setlocale(LC_CTYPE, lc->lc_ctype))
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elog(WARNING, "pg_setlocale(): 'LC_CTYPE=%s' cannot be honored.",
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lc->lc_ctype);
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bool locale_numeric_check(const char *proposed)
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{
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return chklocale(LC_NUMERIC, proposed);
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}
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if (!setlocale(LC_NUMERIC, lc->lc_numeric))
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elog(WARNING, "pg_setlocale(): 'LC_NUMERIC=%s' cannot be honored.",
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lc->lc_numeric);
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bool locale_time_check(const char *proposed)
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{
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return chklocale(LC_TIME, proposed);
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}
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if (!setlocale(LC_TIME, lc->lc_time))
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elog(WARNING, "pg_setlocale(): 'LC_TIME=%s' cannot be honored.",
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lc->lc_time);
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if (!setlocale(LC_MONETARY, lc->lc_monetary))
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elog(WARNING, "pg_setlocale(): 'LC_MONETARY=%s' cannot be honored.",
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lc->lc_monetary);
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/* GUC assign hooks */
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void locale_messages_assign(const char *value)
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{
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#ifdef LC_MESSAGES
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if (!setlocale(LC_MESSAGES, lc->lc_messages))
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elog(WARNING, "pg_setlocale(): 'LC_MESSAGES=%s' cannot be honored.",
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lc->lc_messages);
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setlocale(LC_MESSAGES, value);
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#endif
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}
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/*------
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* Return the POSIX lconv struct (contains number/money formatting information)
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* with locale information for all categories. Note that returned lconv
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* does not depend on currently active category settings, but on external
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* environment variables for locale.
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*------
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void locale_monetary_assign(const char *value)
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{
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setlocale(LC_MONETARY, value);
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}
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void locale_numeric_assign(const char *value)
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{
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setlocale(LC_NUMERIC, value);
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}
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void locale_time_assign(const char *value)
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{
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setlocale(LC_TIME, value);
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}
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/*
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* Returns true if the proposed string represents a valid locale of
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* the given category. This is probably pretty slow, but it's not
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* called in critical places.
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*/
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bool
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chklocale(int category, const char *proposed)
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{
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char *save;
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save = setlocale(category, NULL);
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if (!save)
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return false;
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if (!setlocale(category, proposed))
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return false;
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setlocale(category, save);
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return true;
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}
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/*
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* We'd like to cache whether LC_COLLATE is C (or POSIX), so we can
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* optimize a few code paths in various places.
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*/
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bool
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lc_collate_is_c(void)
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{
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/* Cache result so we only have to compute it once */
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static int result = -1;
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char *localeptr;
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if (result >= 0)
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return (bool) result;
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localeptr = setlocale(LC_COLLATE, NULL);
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if (!localeptr)
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elog(PANIC, "Invalid LC_COLLATE setting");
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if (strcmp(localeptr, "C") == 0)
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result = true;
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else if (strcmp(localeptr, "POSIX") == 0)
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result = true;
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else
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result = false;
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return (bool) result;
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}
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/*
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* Return the POSIX lconv struct (contains number/money formatting
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* information) with locale information for all categories.
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*/
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struct lconv *
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PGLC_localeconv(void)
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{
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PG_LocaleCategories lc;
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struct lconv *extlconv;
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static bool CurrentLocaleConvValid = false;
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static struct lconv CurrentLocaleConv;
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/* Did we do it already? */
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if (CurrentLocaleConvValid)
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return &CurrentLocaleConv;
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/* Save current locale setting to lc */
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PGLC_current(&lc);
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/* Set all locale categories based on postmaster's environment vars */
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setlocale(LC_ALL, "");
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/* Get formatting information for the external environment */
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extlconv = localeconv();
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@ -187,14 +158,6 @@ PGLC_localeconv(void)
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CurrentLocaleConv.negative_sign = strdup(extlconv->negative_sign);
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CurrentLocaleConv.positive_sign = strdup(extlconv->positive_sign);
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/* Restore Postgres' internal locale settings */
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PGLC_setlocale(&lc);
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/* Deallocate category settings allocated in PGLC_current() */
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PGLC_free_categories(&lc);
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CurrentLocaleConvValid = true;
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return &CurrentLocaleConv;
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}
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#endif /* USE_LOCALE */
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