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Fix psql \d commands to behave properly when a pattern using regex | is given.

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Formerly they'd emit '^foo|bar$' which is wrong because the anchors are
parsed as part of the alternatives; must emit '^(foo|bar)$' to get expected
behavior.  Same as bug found previously in similar_escape().  Already fixed
in HEAD, this is just back-porting the part of that patch that was a bug fix.
This commit is contained in:
Tom Lane 2006-10-10 16:15:22 +00:00
parent 61c91fd2d2
commit 9c2b6ec695
1 changed files with 9 additions and 19 deletions
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28
src/bin/psql/describe.c
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@ -3,7 +3,7 @@
*
* Copyright (c) 2000-2005, PostgreSQL Global Development Group
*
* $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.129.2.3 2006/10/07 22:21:44 tgl Exp $
* $PostgreSQL: pgsql/src/bin/psql/describe.c,v 1.129.2.4 2006/10/10 16:15:22 tgl Exp $
*/
#include "postgres_fe.h"
#include "describe.h"
@ -1876,24 +1876,19 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
{
/* We have a name pattern, so constrain the namevar(s) */
appendPQExpBufferChar(&namebuf, '$');
/* Optimize away ".*$", and possibly the whole pattern */
if (namebuf.len >= 3 &&
strcmp(namebuf.data + (namebuf.len - 3), ".*$") == 0)
namebuf.data[namebuf.len - 3] = '\0';
if (namebuf.data[0])
/* Optimize away a "*" pattern */
if (strcmp(namebuf.data, ".*") != 0)
{
WHEREAND();
if (altnamevar)
appendPQExpBuffer(buf,
"(%s ~ '^%s'\n"
" OR %s ~ '^%s')\n",
"(%s ~ '^(%s)$'\n"
" OR %s ~ '^(%s)$')\n",
namevar, namebuf.data,
altnamevar, namebuf.data);
else
appendPQExpBuffer(buf,
"%s ~ '^%s'\n",
"%s ~ '^(%s)$'\n",
namevar, namebuf.data);
}
}
@ -1902,16 +1897,11 @@ processNamePattern(PQExpBuffer buf, const char *pattern,
{
/* We have a schema pattern, so constrain the schemavar */
appendPQExpBufferChar(&schemabuf, '$');
/* Optimize away ".*$", and possibly the whole pattern */
if (schemabuf.len >= 3 &&
strcmp(schemabuf.data + (schemabuf.len - 3), ".*$") == 0)
schemabuf.data[schemabuf.len - 3] = '\0';
if (schemabuf.data[0] && schemavar)
/* Optimize away a "*" pattern */
if (strcmp(schemabuf.data, ".*") != 0 && schemavar)
{
WHEREAND();
appendPQExpBuffer(buf, "%s ~ '^%s'\n",
appendPQExpBuffer(buf, "%s ~ '^(%s)$'\n",
schemavar, schemabuf.data);
}
}