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Change function name PQclientencoding to PQclientEncoding since

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it seems more suitable for the naming convention in libpq.

New function PQsetClientEncoding added. It makes possible to change
the client encoding on the fly without setting PGCLIENTENCODING.
This commit is contained in:
Tatsuo Ishii 2000-02-05 12:33:22 +00:00
parent b304b4a90e
commit d4e62e5ded
3 changed files with 49 additions and 6 deletions
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46
src/interfaces/libpq/fe-connect.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.116 2000/01/26 05:58:45 momjian Exp $
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.117 2000/02/05 12:33:22 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -41,6 +41,7 @@
#endif
#ifdef MULTIBYTE
#include "miscadmin.h"
#include "mb/pg_wchar.h"
#endif
@ -2381,13 +2382,54 @@ PQbackendPID(const PGconn *conn)
}
int
PQclientencoding(const PGconn *conn)
PQclientEncoding(const PGconn *conn)
{
if (!conn || conn->status != CONNECTION_OK)
return -1;
return conn->client_encoding;
}
#ifdef MULTIBYTE
int
PQsetClientEncoding(PGconn *conn, const char *encoding)
{
char qbuf[128];
static char query[] = "set client_encoding to '%s'";
PGresult *res;
int status;
if (!conn || conn->status != CONNECTION_OK)
return -1;
/* check query buffer overflow */
if (sizeof(qbuf) < (sizeof(query) + strlen(encoding)))
return -1;
/* ok, now send a query */
sprintf(qbuf, query, encoding);
res = PQexec(conn, qbuf);
if (res == (PGresult *)NULL)
return -1;
if (res->resultStatus != PGRES_COMMAND_OK)
status = -1;
else
{
/* change libpq internal encoding */
conn->client_encoding = pg_char_to_encoding(encoding);
status = 0; /* everything is ok */
}
PQclear(res);
return(status);
}
#else
int
PQsetClientEncoding(PGconn *conn, const char *encoding)
{
return -1;
}
#endif
void
PQtrace(PGconn *conn, FILE *debug_port)
{

4
src/interfaces/libpq/fe-print.c
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@ -10,7 +10,7 @@
* didn't really belong there.
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.33 2000/01/29 16:58:51 petere Exp $
* $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-print.c,v 1.34 2000/02/05 12:33:22 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -347,7 +347,7 @@ do_field(const PQprintOpt *po, const PGresult *res,
char ch = '0';
#ifdef MULTIBYTE
for (p = pval; *p; p += PQmblen(p, PQclientencoding(res->conn)))
for (p = pval; *p; p += PQmblen(p, PQclientEncoding(res->conn)))
#else
for (p = pval; *p; p++)
#endif

5
src/interfaces/libpq/libpq-fe.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: libpq-fe.h,v 1.58 2000/01/29 16:58:51 petere Exp $
* $Id: libpq-fe.h,v 1.59 2000/02/05 12:33:22 ishii Exp $
*
*-------------------------------------------------------------------------
*/
@ -218,7 +218,8 @@ extern "C"
extern const char *PQerrorMessage(const PGconn *conn);
extern int PQsocket(const PGconn *conn);
extern int PQbackendPID(const PGconn *conn);
extern int PQclientencoding(const PGconn *conn);
extern int PQclientEncoding(const PGconn *conn);
extern int PQsetClientEncoding(PGconn *conn, const char *encoding);
/* Enable/disable tracing */
extern void PQtrace(PGconn *conn, FILE *debug_port);