From bf00bbb0c4940b80b46b7e5b379cd64184f2262f Mon Sep 17 00:00:00 2001
From: "Marc G. Fournier" <scrappy@hub.org>
Date: Fri, 24 Jul 1998 03:32:46 +0000
Subject: I really hope that I haven't missed anything in this one...

From: t-ishii@sra.co.jp

Attached are patches to enhance the multi-byte support.  (patches are
against 7/18 snapshot)

* determine encoding at initdb/createdb rather than compile time

Now initdb/createdb has an option to specify the encoding. Also, I
modified the syntax of CREATE DATABASE to accept encoding option. See
README.mb for more details.

For this purpose I have added new column "encoding" to pg_database.
Also pg_attribute and pg_class are changed to catch up the
modification to pg_database.  Actually I haved added pg_database_mb.h,
pg_attribute_mb.h and pg_class_mb.h. These are used only when MB is
enabled. The reason having separate files is I couldn't find a way to
use ifdef or whatever in those files. I have to admit it looks
ugly. No way.

* support for PGCLIENTENCODING when issuing COPY command

commands/copy.c modified.

* support for SQL92 syntax "SET NAMES"

See gram.y.

* support for LATIN2-5
* add UNICODE regression test case
* new test suite for MB

New directory test/mb added.

* clean up source files

Basic idea is to have MB's own subdirectory for easier maintenance.
These are include/mb and backend/utils/mb.
---
 src/interfaces/libpq/fe-connect.c | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

(limited to 'src/interfaces/libpq/fe-connect.c')

diff --git a/src/interfaces/libpq/fe-connect.c b/src/interfaces/libpq/fe-connect.c
index 7833f635ac0..5029ec028b9 100644
--- a/src/interfaces/libpq/fe-connect.c
+++ b/src/interfaces/libpq/fe-connect.c
@@ -7,7 +7,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.75 1998/07/18 18:34:30 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/interfaces/libpq/fe-connect.c,v 1.76 1998/07/24 03:32:33 scrappy Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -44,6 +44,9 @@
 #include <crypt.h>
 #endif
 
+#ifdef MB
+#include "mb/pg_wchar.h"
+#endif
 
 static ConnStatusType connectDB(PGconn *conn);
 static PGconn *makeEmptyPGconn(void);
@@ -789,6 +792,34 @@ PQsetenv(PGconn *conn)
 {
 	struct EnvironmentOptions *eo;
 	char		setQuery[80];	/* mjl: size okay? XXX */
+#ifdef MB
+	char	*envname = "PGCLIENTENCODING";
+	char	envbuf[64];
+	char	*env;
+	char	*encoding = 0;
+	PGresult   *rtn;
+#endif
+
+#ifdef MB
+	/* query server encoding */
+	env = getenv(envname);
+	if (!env) {
+	  rtn = PQexec(conn, "select getdatabaseencoding()");
+	  if (rtn && PQresultStatus(rtn) == PGRES_TUPLES_OK) {
+	    encoding = PQgetvalue(rtn,0,0);
+	    if (encoding) {
+	      /* set client encoding */
+	      sprintf(envbuf,"%s=%s",envname,encoding);
+	      putenv(envbuf);
+	    }
+	    PQclear(rtn);
+	  }
+	  if (!encoding) {	/* this should not happen */
+	    sprintf(envbuf,"%s=%s",envname,pg_encoding_to_char(MB));
+	    putenv(envbuf);
+	  }
+	}
+#endif
 
 	for (eo = EnvironmentOptions; eo->envName; eo++)
 	{
-- 
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