diff options
Diffstat (limited to 'src/backend/utils/adt/pg_locale.c')
| -rw-r--r-- | src/backend/utils/adt/pg_locale.c | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/src/backend/utils/adt/pg_locale.c b/src/backend/utils/adt/pg_locale.c index 5b8d8e88102..7c9c774d91b 100644 --- a/src/backend/utils/adt/pg_locale.c +++ b/src/backend/utils/adt/pg_locale.c @@ -4,7 +4,7 @@ * * Portions Copyright (c) 2002-2005, PostgreSQL Global Development Group * - * $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.30 2005/01/01 05:43:07 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/utils/adt/pg_locale.c,v 1.31 2005/03/16 00:02:49 momjian Exp $ * *----------------------------------------------------------------------- */ @@ -197,6 +197,33 @@ lc_collate_is_c(void) /* + * We'd like to cache whether LC_CTYPE is C (or POSIX), so we can + * optimize a few code paths in various places. + */ +bool +lc_ctype_is_c(void) +{ + /* Cache result so we only have to compute it once */ + static int result = -1; + char *localeptr; + + if (result >= 0) + return (bool) result; + localeptr = setlocale(LC_CTYPE, NULL); + if (!localeptr) + elog(ERROR, "invalid LC_CTYPE setting"); + + if (strcmp(localeptr, "C") == 0) + result = true; + else if (strcmp(localeptr, "POSIX") == 0) + result = true; + else + result = false; + return (bool) result; +} + + +/* * Frees the malloced content of a struct lconv. (But not the struct * itself.) */ |