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Remove support for null pg_locale_t most places.

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Previously, passing NULL for pg_locale_t meant "use the libc provider
and the server environment". Now that the database collation is
represented as a proper pg_locale_t (not dependent on setlocale()),
remove special cases for NULL.

Leave wchar2char() and char2wchar() unchanged for now, because the
callers don't always have a libc-based pg_locale_t available.

Discussion: https://postgr.es/m/cfd9eb85-c52a-4ec9-a90e-a5e4de56e57d@eisentraut.org
Reviewed-by: Peter Eisentraut, Andreas Karlsson
This commit is contained in:
Jeff Davis
2024-08-05 18:15:57 -07:00
parent f80b09bac8
commit e9931bfb75
7 changed files with 73 additions and 255 deletions
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10
src/backend/utils/adt/varchar.c
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@@ -999,7 +999,7 @@ hashbpchar(PG_FUNCTION_ARGS)
Oid collid = PG_GET_COLLATION();
char *keydata;
int keylen;
pg_locale_t mylocale = 0;
pg_locale_t mylocale;
Datum result;
if (!collid)
@@ -1011,8 +1011,7 @@ hashbpchar(PG_FUNCTION_ARGS)
keydata = VARDATA_ANY(key);
keylen = bcTruelen(key);
if (!lc_collate_is_c(collid))
mylocale = pg_newlocale_from_collation(collid);
mylocale = pg_newlocale_from_collation(collid);
if (pg_locale_deterministic(mylocale))
{
@@ -1056,7 +1055,7 @@ hashbpcharextended(PG_FUNCTION_ARGS)
Oid collid = PG_GET_COLLATION();
char *keydata;
int keylen;
pg_locale_t mylocale = 0;
pg_locale_t mylocale;
Datum result;
if (!collid)
@@ -1068,8 +1067,7 @@ hashbpcharextended(PG_FUNCTION_ARGS)
keydata = VARDATA_ANY(key);
keylen = bcTruelen(key);
if (!lc_collate_is_c(collid))
mylocale = pg_newlocale_from_collation(collid);
mylocale = pg_newlocale_from_collation(collid);
if (pg_locale_deterministic(mylocale))
{