From eb089e7f766f6d366641d582e38ac59a2bb57123 Mon Sep 17 00:00:00 2001
From: Tatsuo Ishii <ishii@postgresql.org>
Date: Sat, 19 Feb 2000 05:01:16 +0000
Subject: [PATCH] Add new backslash command \eset and \eshow.

---
 src/bin/psql/command.c | 31 ++++++++++++++++++++++++++++++-
 src/bin/psql/help.c    |  6 +++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/bin/psql/command.c b/src/bin/psql/command.c
index a4353124cc..cf1e701c0e 100644
--- a/src/bin/psql/command.c
+++ b/src/bin/psql/command.c
@@ -3,7 +3,7 @@
  *
  * Copyright 2000 by PostgreSQL Global Development Group
  *
- * $Header: /cvsroot/pgsql/src/bin/psql/command.c,v 1.19 2000/02/16 13:15:26 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/bin/psql/command.c,v 1.20 2000/02/19 05:01:15 ishii Exp $
  */
 #include "postgres.h"
 #include "command.h"
@@ -33,6 +33,11 @@
 #include "settings.h"
 #include "variables.h"
 
+#ifdef MULTIBYTE
+#include "miscadmin.h"
+#include "mb/pg_wchar.h"
+#endif
+
 
 /* functions for use in this file */
 
@@ -346,6 +351,30 @@ exec_command(const char *cmd,
             fputs("\n", fout);
 	}
 
+#ifdef MULTIBYTE
+	/* \eset -- set client side encoding */
+	else if (strcmp(cmd, "eset") == 0)
+	{
+		char *encoding = scan_option(&string, OT_NORMAL, NULL);
+		if (PQsetClientEncoding(pset.db, encoding) == -1)
+		{
+			psql_error("\\%s: invalid encoding\n", cmd);
+		}
+		/* save encoding info into psql internal data */
+		pset.encoding = PQclientEncoding(pset.db);
+		free(encoding);
+	}
+	/* \eshow -- show encoding info */
+	else if (strcmp(cmd, "eshow") == 0)
+	{
+		int encoding = PQclientEncoding(pset.db);
+		if (encoding == -1)
+		{
+			psql_error("\\%s: there is no connection\n", cmd);
+		}
+		printf("%s\n", pg_encoding_to_char(encoding));
+	}
+#endif
 	/* \f -- change field separator */
 	else if (strcmp(cmd, "f") == 0)
     {
diff --git a/src/bin/psql/help.c b/src/bin/psql/help.c
index 63e4bda5d7..ddd8b22c35 100644
--- a/src/bin/psql/help.c
+++ b/src/bin/psql/help.c
@@ -3,7 +3,7 @@
  *
  * Copyright 2000 by PostgreSQL Global Development Group
  *
- * $Header: /cvsroot/pgsql/src/bin/psql/help.c,v 1.19 2000/02/16 13:15:26 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/bin/psql/help.c,v 1.20 2000/02/19 05:01:16 ishii Exp $
  */
 #include "postgres.h"
 #include "help.h"
@@ -200,6 +200,10 @@ slashUsage(void)
 	fprintf(fout, " \\dT            list data types\n");
 	fprintf(fout, " \\e [fname]     edit the current query buffer or <fname> with external editor\n");
 	fprintf(fout, " \\echo <text>   write text to stdout\n");
+#ifdef MULTIBYTE
+	fprintf(fout, " \\eset <encoding> set client encoding\n");
+	fprintf(fout, " \\eshow         show client encoding\n");
+#endif
 	fprintf(fout, " \\g [fname]     send query to backend (and results in <fname> or |pipe)\n");
 	fprintf(fout, " \\h [cmd]       help on syntax of sql commands, * for all commands\n");
 	fprintf(fout, " \\i <fname>     read and execute queries from filename\n");