mirror/postgresql
2
0
Fork 0
mirror of https://git.postgresql.org/git/postgresql.git synced 2025-02-23 19:39:53 +08:00
Code Issues Packages Projects Releases Wiki Activity

Fix psql's copy of utf2ucs() to match the backend's copy exactly;

Browse Source 
in particular, propagate a fix in the test to see whether a UTF8 character has
length 4 bytes.  This is likely of little real-world consequence because
5-or-more-byte UTF8 sequences are not supported by Postgres nor seen anywhere
in the wild, but still we may as well get it right.  Problem found by Joseph
Adams.

Bug is aboriginal, so back-patch all the way.
This commit is contained in:
Tom Lane 2010-08-16 00:06:48 +00:00
parent 35f0dccb0d
commit 7ded6d69d5
1 changed files with 2 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/bin/psql/mbprint.c
View File

@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2005, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/mbprint.c,v 1.18 2005/10/15 02:49:40 momjian Exp $
* $PostgreSQL: pgsql/src/bin/psql/mbprint.c,v 1.18.2.1 2010/08/16 00:06:48 tgl Exp $
*/
#include "postgres_fe.h"
@ -167,28 +167,20 @@ utf2ucs(const unsigned char *c)
if ((*c & 0x80) == 0)
return (pg_wchar) c[0];
else if ((*c & 0xe0) == 0xc0)
{
return (pg_wchar) (((c[0] & 0x1f) << 6) |
(c[1] & 0x3f));
}
else if ((*c & 0xf0) == 0xe0)
{
return (pg_wchar) (((c[0] & 0x0f) << 12) |
((c[1] & 0x3f) << 6) |
(c[2] & 0x3f));
}
else if ((*c & 0xf0) == 0xf0)
{
else if ((*c & 0xf8) == 0xf0)
return (pg_wchar) (((c[0] & 0x07) << 18) |
((c[1] & 0x3f) << 12) |
((c[2] & 0x3f) << 6) |
(c[3] & 0x3f));
}
else
{
/* that is an invalid code on purpose */
return 0xffffffff;
}
}
/* mb_utf_wcwidth : calculate column length for the utf8 string pwcs