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Support SET/SHOW/RESET client_encoding and server_encoding even when
MULTIBYTE support is not compiled (you just can't set them to anything but SQL_ASCII). This should reduce interoperability problems between MB-enabled clients and non-MB-enabled servers.
This commit is contained in:
Tom Lane
parent
995ccad699
commit
0a63b6d066
@ -9,16 +9,16 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.41 2000/09/22 15:34:31 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.42 2000/10/25 19:44:44 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include <ctype.h>
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#include <time.h>
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#include "postgres.h"
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#include "access/xact.h"
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#include "catalog/pg_shadow.h"
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#include "commands/variable.h"
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@ -32,10 +32,13 @@
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#ifdef MULTIBYTE
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#include "mb/pg_wchar.h"
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#else
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/* Grand unified hard-coded badness */
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#define pg_encoding_to_char(x) "SQL_ASCII"
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#define pg_get_client_encoding() 0
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#endif
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static bool show_date(void);
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static bool reset_date(void);
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static bool parse_date(char *);
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@ -53,6 +56,13 @@ static bool parse_random_seed(char *);
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static bool show_random_seed(void);
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static bool reset_random_seed(void);
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static bool show_client_encoding(void);
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static bool reset_client_encoding(void);
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static bool parse_client_encoding(char *);
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static bool show_server_encoding(void);
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static bool reset_server_encoding(void);
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static bool parse_server_encoding(char *);
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/*
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* get_token
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@ -250,7 +260,7 @@ parse_date(char *value)
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}
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static bool
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show_date()
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show_date(void)
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{
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char buf[64];
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@ -280,7 +290,7 @@ show_date()
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}
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static bool
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reset_date()
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reset_date(void)
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{
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DateStyle = DefaultDateStyle;
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EuroDates = DefaultEuroDates;
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@ -379,7 +389,7 @@ parse_timezone(char *value)
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} /* parse_timezone() */
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static bool
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show_timezone()
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show_timezone(void)
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{
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char *tz;
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@ -401,7 +411,7 @@ show_timezone()
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* - thomas 1998-01-26
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*/
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static bool
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reset_timezone()
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reset_timezone(void)
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{
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/* no time zone has been set in this session? */
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if (defaultTZ == NULL)
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@ -470,7 +480,7 @@ parse_DefaultXactIsoLevel(char *value)
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}
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static bool
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show_DefaultXactIsoLevel()
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show_DefaultXactIsoLevel(void)
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{
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if (DefaultXactIsoLevel == XACT_SERIALIZABLE)
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@ -481,7 +491,7 @@ show_DefaultXactIsoLevel()
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}
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static bool
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reset_DefaultXactIsoLevel()
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reset_DefaultXactIsoLevel(void)
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{
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#if 0
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TransactionState s = CurrentTransactionState;
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@ -527,7 +537,7 @@ parse_XactIsoLevel(char *value)
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}
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static bool
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show_XactIsoLevel()
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show_XactIsoLevel(void)
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{
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if (XactIsoLevel == XACT_SERIALIZABLE)
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@ -538,7 +548,7 @@ show_XactIsoLevel()
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}
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static bool
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reset_XactIsoLevel()
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reset_XactIsoLevel(void)
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{
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if (SerializableSnapshot != NULL)
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@ -588,6 +598,96 @@ reset_random_seed(void)
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}
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/*
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* MULTIBYTE-related functions
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*
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* If MULTIBYTE support was not compiled, we still allow these variables
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* to exist, but you can't set them to anything but "SQL_ASCII". This
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* minimizes interoperability problems between non-MB servers and MB-enabled
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* clients.
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*/
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static bool
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parse_client_encoding(char *value)
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{
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#ifdef MULTIBYTE
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int encoding;
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encoding = pg_valid_client_encoding(value);
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if (encoding < 0)
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{
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if (value)
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elog(ERROR, "Client encoding %s is not supported", value);
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else
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elog(ERROR, "No client encoding is specified");
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}
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else
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{
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if (pg_set_client_encoding(encoding))
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{
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elog(ERROR, "Conversion between %s and %s is not supported",
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value, pg_encoding_to_char(GetDatabaseEncoding()));
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}
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}
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#else
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if (value &&
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strcasecmp(value, pg_encoding_to_char(pg_get_client_encoding())) != 0)
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elog(ERROR, "Client encoding %s is not supported", value);
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#endif
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return TRUE;
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}
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static bool
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show_client_encoding(void)
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{
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elog(NOTICE, "Current client encoding is %s",
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pg_encoding_to_char(pg_get_client_encoding()));
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return TRUE;
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}
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static bool
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reset_client_encoding(void)
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{
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#ifdef MULTIBYTE
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int encoding;
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char *env = getenv("PGCLIENTENCODING");
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if (env)
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{
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encoding = pg_char_to_encoding(env);
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if (encoding < 0)
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encoding = GetDatabaseEncoding();
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}
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else
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encoding = GetDatabaseEncoding();
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pg_set_client_encoding(encoding);
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#endif
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return TRUE;
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}
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static bool
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parse_server_encoding(char *value)
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{
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elog(NOTICE, "SET SERVER_ENCODING is not supported");
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return TRUE;
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}
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static bool
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show_server_encoding(void)
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{
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elog(NOTICE, "Current server encoding is %s",
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pg_encoding_to_char(GetDatabaseEncoding()));
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return TRUE;
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}
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static bool
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reset_server_encoding(void)
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{
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elog(NOTICE, "RESET SERVER_ENCODING is not supported");
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return TRUE;
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}
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void
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SetPGVariable(const char *name, const char *value)
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@ -606,12 +706,10 @@ SetPGVariable(const char *name, const char *value)
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parse_DefaultXactIsoLevel(mvalue);
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else if (strcasecmp(name, "XactIsoLevel")==0)
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parse_XactIsoLevel(mvalue);
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#ifdef MULTIBYTE
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else if (strcasecmp(name, "client_encoding")==0)
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parse_client_encoding(mvalue);
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else if (strcasecmp(name, "server_encoding")==0)
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parse_server_encoding(mvalue);
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#endif
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else if (strcasecmp(name, "random_seed")==0)
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parse_random_seed(mvalue);
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else
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@ -633,12 +731,10 @@ GetPGVariable(const char *name)
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show_DefaultXactIsoLevel();
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else if (strcasecmp(name, "XactIsoLevel")==0)
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show_XactIsoLevel();
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#ifdef MULTIBYTE
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else if (strcasecmp(name, "client_encoding")==0)
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show_client_encoding();
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else if (strcasecmp(name, "server_encoding")==0)
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show_server_encoding();
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#endif
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else if (strcasecmp(name, "random_seed")==0)
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show_random_seed();
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else
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@ -659,12 +755,10 @@ ResetPGVariable(const char *name)
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reset_DefaultXactIsoLevel();
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else if (strcasecmp(name, "XactIsoLevel")==0)
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reset_XactIsoLevel();
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#ifdef MULTIBYTE
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else if (strcasecmp(name, "client_encoding")==0)
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reset_client_encoding();
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else if (strcasecmp(name, "server_encoding")==0)
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reset_server_encoding();
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#endif
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else if (strcasecmp(name, "random_seed")==0)
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reset_random_seed();
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else
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@ -4,7 +4,7 @@
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# Makefile for utils/mb
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#
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# IDENTIFICATION
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# $Header: /cvsroot/pgsql/src/backend/utils/mb/Makefile,v 1.12 2000/10/20 21:03:53 petere Exp $
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# $Header: /cvsroot/pgsql/src/backend/utils/mb/Makefile,v 1.13 2000/10/25 19:44:44 tgl Exp $
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#
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#-------------------------------------------------------------------------
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@ -12,8 +12,7 @@ subdir = src/backend/utils/mb
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top_builddir = ../../../..
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include $(top_builddir)/src/Makefile.global
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OBJS = common.o conv.o mbutils.o wchar.o wstrcmp.o wstrncmp.o variable.o \
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big5.o
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OBJS = common.o conv.o mbutils.o wchar.o wstrcmp.o wstrncmp.o big5.o
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all: SUBSYS.o
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@ -22,13 +21,13 @@ SUBSYS.o: $(OBJS)
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utftest.o: utftest.c conv.c wchar.c mbutils.c
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sjistest: sjistest.o palloc.o common.o mbutils.o wchar.o wstrcmp.o wstrncmp.o variable.o big5.o
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sjistest: sjistest.o palloc.o common.o mbutils.o wchar.o wstrcmp.o wstrncmp.o big5.o
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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liketest: liketest.o palloc.o $(OBJS)
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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utftest: utftest.o palloc.o common.o wstrcmp.o wstrncmp.o variable.o big5.o
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utftest: utftest.o palloc.o common.o wstrcmp.o wstrncmp.o big5.o
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$(CC) -o $@ $^ $(CFLAGS) $(LDFLAGS)
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uconv: uconv.o palloc.o common.o conv.o wchar.o big5.o mbutils.o
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@ -7,7 +7,6 @@ mbutilc.c: public functions for the backend only.
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requires conv.c and wchar.c
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wstrcmp.c: strcmp for mb
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wstrncmp.c: strncmp for mb
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varable.c: public functions for show/set/reset variable commands
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alt.c: a tool to generate KOI8 <--> CP866 conversion table
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iso.c: a tool to generate KOI8 <--> ISO8859-5 conversion table
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win.c: a tool to generate KOI8 <--> CP1251 conversion table
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@ -1,82 +0,0 @@
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/*
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* This file contains some public functions
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* related to show/set/reset variable commands.
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* Tatsuo Ishii
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* $Id: variable.c,v 1.7 2000/04/20 22:40:18 tgl Exp $
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*/
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#include "postgres.h"
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#include "miscadmin.h"
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#include "mb/pg_wchar.h"
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bool
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parse_client_encoding(char *value)
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{
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int encoding;
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encoding = pg_valid_client_encoding(value);
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if (encoding < 0)
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{
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if (value)
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elog(ERROR, "Client encoding %s is not supported", value);
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else
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elog(ERROR, "No client encoding is specified");
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}
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else
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{
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if (pg_set_client_encoding(encoding))
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{
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elog(ERROR, "Conversion between %s and %s is not supported",
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value, pg_encoding_to_char(GetDatabaseEncoding()));
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}
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}
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return TRUE;
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}
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bool
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show_client_encoding()
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{
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elog(NOTICE, "Current client encoding is %s",
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pg_encoding_to_char(pg_get_client_encoding()));
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return TRUE;
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}
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bool
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reset_client_encoding()
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{
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int encoding;
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char *env = getenv("PGCLIENTENCODING");
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if (env)
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{
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encoding = pg_char_to_encoding(env);
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if (encoding < 0)
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encoding = GetDatabaseEncoding();
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}
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else
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encoding = GetDatabaseEncoding();
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pg_set_client_encoding(encoding);
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return TRUE;
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}
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bool
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parse_server_encoding(char *value)
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{
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elog(NOTICE, "SET SERVER_ENCODING is not supported");
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return TRUE;
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}
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bool
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show_server_encoding()
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{
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elog(NOTICE, "Current server encoding is %s",
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pg_encoding_to_char(GetDatabaseEncoding()));
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return TRUE;
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}
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bool
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reset_server_encoding()
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{
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elog(NOTICE, "RESET SERVER_ENCODING is not supported");
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return TRUE;
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}
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@ -1,4 +1,4 @@
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/* $Id: pg_wchar.h,v 1.19 2000/10/12 07:36:51 ishii Exp $ */
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/* $Id: pg_wchar.h,v 1.20 2000/10/25 19:44:43 tgl Exp $ */
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#ifndef PG_WCHAR_H
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#define PG_WCHAR_H
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@ -132,12 +132,6 @@ extern int pg_mbstrlen(const unsigned char *);
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extern int pg_mbstrlen_with_len(const unsigned char *, int);
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extern int pg_mbcliplen(const unsigned char *, int, int);
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extern pg_encoding_conv_tbl *pg_get_encent_by_encoding(int);
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extern bool show_client_encoding(void);
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extern bool reset_client_encoding(void);
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extern bool parse_client_encoding(char *);
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extern bool show_server_encoding(void);
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extern bool reset_server_encoding(void);
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extern bool parse_server_encoding(char *);
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extern int pg_set_client_encoding(int);
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extern int pg_get_client_encoding(void);
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extern unsigned char *pg_client_to_server(unsigned char *, int);
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