Per discussion, this should result in defaulting to SQL_ASCII encoding.
The original coding could not support that because it conflated selection
of SQL_ASCII encoding with not being able to determine the encoding.
Adjust pg_get_encoding_from_locale()'s API to distinguish these cases,
and fix callers appropriately. Only initdb actually changes behavior,
since the other callers were perfectly content to consider these cases
equivalent.
Per bug #5178 from Boh Yap. Not going to bother back-patching, since
no one has complained before and there's an easy workaround (namely,
specify the encoding you want).
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.227 2009/10/07 22:14:18 alvherre Exp $
+ * $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.228 2009/11/12 02:46:16 tgl Exp $
*
*-------------------------------------------------------------------------
*/
* Check whether chosen encoding matches chosen locale settings. This
* restriction is necessary because libc's locale-specific code usually
* fails when presented with data in an encoding it's not expecting. We
- * allow mismatch in three cases:
+ * allow mismatch in four cases:
*
- * 1. locale encoding = SQL_ASCII, which means either that the locale is
- * C/POSIX which works with any encoding, or that we couldn't determine
- * the locale's encoding and have to trust the user to get it right.
+ * 1. locale encoding = SQL_ASCII, which means that the locale is
+ * C/POSIX which works with any encoding.
*
- * 2. selected encoding is SQL_ASCII, but only if you're a superuser. This
- * is risky but we have historically allowed it --- notably, the
- * regression tests require it.
+ * 2. locale encoding = -1, which means that we couldn't determine
+ * the locale's encoding and have to trust the user to get it right.
*
* 3. selected encoding is UTF8 and platform is win32. This is because
* UTF8 is a pseudo codepage that is supported in all locales since it's
* converted to UTF16 before being used.
*
+ * 4. selected encoding is SQL_ASCII, but only if you're a superuser. This
+ * is risky but we have historically allowed it --- notably, the
+ * regression tests require it.
+ *
* Note: if you change this policy, fix initdb to match.
*/
ctype_encoding = pg_get_encoding_from_locale(dbctype);
if (!(ctype_encoding == encoding ||
ctype_encoding == PG_SQL_ASCII ||
+ ctype_encoding == -1 ||
#ifdef WIN32
encoding == PG_UTF8 ||
#endif
if (!(collate_encoding == encoding ||
collate_encoding == PG_SQL_ASCII ||
+ collate_encoding == -1 ||
#ifdef WIN32
encoding == PG_UTF8 ||
#endif
*
* Tatsuo Ishii
*
- * $PostgreSQL: pgsql/src/backend/utils/mb/mbutils.c,v 1.91 2009/10/17 05:14:52 mha Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/mb/mbutils.c,v 1.92 2009/11/12 02:46:16 tgl Exp $
*/
#include "postgres.h"
GetPlatformEncoding(void)
{
if (PlatformEncoding == NULL)
- PlatformEncoding = &pg_enc2name_tbl[pg_get_encoding_from_locale("")];
+ {
+ /* try to determine encoding of server's environment locale */
+ int encoding = pg_get_encoding_from_locale("");
+
+ if (encoding < 0)
+ encoding = PG_SQL_ASCII;
+ PlatformEncoding = &pg_enc2name_tbl[encoding];
+ }
return PlatformEncoding->encoding;
}
* Portions Copyright (c) 1994, Regents of the University of California
* Portions taken from FreeBSD.
*
- * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.175 2009/09/03 01:40:11 tgl Exp $
+ * $PostgreSQL: pgsql/src/bin/initdb/initdb.c,v 1.176 2009/11/12 02:46:16 tgl Exp $
*
*-------------------------------------------------------------------------
*/
locale_enc = pg_get_encoding_from_locale(locale);
- /* We allow selection of SQL_ASCII --- see notes in createdb() */
+ /* See notes in createdb() to understand these tests */
if (!(locale_enc == user_enc ||
locale_enc == PG_SQL_ASCII ||
- user_enc == PG_SQL_ASCII
+ locale_enc == -1 ||
#ifdef WIN32
-
- /*
- * On win32, if the encoding chosen is UTF8, all locales are OK (assuming
- * the actual locale name passed the checks above). This is because UTF8
- * is a pseudo-codepage, that we convert to UTF16 before doing any
- * operations on, and UTF16 supports all locales.
- */
- || user_enc == PG_UTF8
+ user_enc == PG_UTF8 ||
#endif
- ))
+ user_enc == PG_SQL_ASCII))
{
fprintf(stderr, _("%s: encoding mismatch\n"), progname);
fprintf(stderr,
ctype_enc = pg_get_encoding_from_locale(lc_ctype);
- if (ctype_enc == PG_SQL_ASCII &&
- !(pg_strcasecmp(lc_ctype, "C") == 0 ||
- pg_strcasecmp(lc_ctype, "POSIX") == 0))
+ if (ctype_enc == -1)
{
- /* Hmm, couldn't recognize the locale's codeset */
+ /* Couldn't recognize the locale's codeset */
fprintf(stderr, _("%s: could not find suitable encoding for locale %s\n"),
progname, lc_ctype);
fprintf(stderr, _("Rerun %s with the -E option.\n"), progname);
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/port/chklocale.c,v 1.11 2009/02/10 19:29:39 petere Exp $
+ * $PostgreSQL: pgsql/src/port/chklocale.c,v 1.12 2009/11/12 02:46:16 tgl Exp $
*
*-------------------------------------------------------------------------
*/
{PG_SHIFT_JIS_2004, "SJIS_2004"},
+ {PG_SQL_ASCII, "US-ASCII"},
+
{PG_SQL_ASCII, NULL} /* end marker */
};
/*
* Given a setting for LC_CTYPE, return the Postgres ID of the associated
- * encoding, if we can determine it.
+ * encoding, if we can determine it. Return -1 if we can't determine it.
*
* Pass in NULL to get the encoding for the current locale setting.
+ * Pass "" to get the encoding selected by the server's environment.
*
* If the result is PG_SQL_ASCII, callers should treat it as being compatible
- * with any desired encoding. We return this if the locale is C/POSIX or we
- * can't determine the encoding.
+ * with any desired encoding.
*/
int
pg_get_encoding_from_locale(const char *ctype)
save = setlocale(LC_CTYPE, NULL);
if (!save)
- return PG_SQL_ASCII; /* setlocale() broken? */
+ return -1; /* setlocale() broken? */
/* must copy result, or it might change after setlocale */
save = strdup(save);
if (!save)
- return PG_SQL_ASCII; /* out of memory; unlikely */
+ return -1; /* out of memory; unlikely */
name = setlocale(LC_CTYPE, ctype);
if (!name)
{
free(save);
- return PG_SQL_ASCII; /* bogus ctype passed in? */
+ return -1; /* bogus ctype passed in? */
}
#ifndef WIN32
/* much easier... */
ctype = setlocale(LC_CTYPE, NULL);
if (!ctype)
- return PG_SQL_ASCII; /* setlocale() broken? */
+ return -1; /* setlocale() broken? */
#ifndef WIN32
sys = nl_langinfo(CODESET);
if (sys)
}
if (!sys)
- return PG_SQL_ASCII; /* out of memory; unlikely */
+ return -1; /* out of memory; unlikely */
/* If locale is C or POSIX, we can allow all encodings */
if (pg_strcasecmp(ctype, "C") == 0 || pg_strcasecmp(ctype, "POSIX") == 0)
#endif
free(sys);
- return PG_SQL_ASCII;
+ return -1;
}
#else /* (HAVE_LANGINFO_H && CODESET) || WIN32 */
/*
* stub if no platform support
+ *
+ * Note: we could return -1 here, but that would have the effect of
+ * forcing users to specify an encoding to initdb on such platforms.
+ * It seems better to silently default to SQL_ASCII.
*/
int
pg_get_encoding_from_locale(const char *ctype)
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