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Merge the last few variable.c configuration variables into the generic

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GUC support.  It's now possible to set datestyle, timezone, and
client_encoding from postgresql.conf and per-database or per-user
settings.  Also, implement rollback of SET commands that occur in a
transaction that later fails.  Create a SET LOCAL var = value syntax
that sets the variable only for the duration of the current transaction.
All per previous discussions in pghackers.
This commit is contained in:
Tom Lane
2002-05-17 01:19:19 +00:00
parent fa613fa1ea
commit f0811a74b3
42 changed files with 2641 additions and 1802 deletions
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33
src/backend/utils/misc/guc-file.l
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@@ -4,7 +4,7 @@
*
* Copyright 2000 by PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc-file.l,v 1.11 2002/03/02 21:39:33 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/misc/guc-file.l,v 1.12 2002/05/17 01:19:18 tgl Exp $
*/
%{
@@ -168,7 +168,7 @@ ProcessConfigFile(GucContext context)
head = tail = NULL;
opt_name = opt_value = NULL;
while((token = yylex()))
while ((token = yylex()))
switch(parse_state)
{
case 0: /* no previous input */
@@ -188,23 +188,22 @@ ProcessConfigFile(GucContext context)
token = yylex();
if (token != GUC_ID && token != GUC_STRING &&
token != GUC_INTEGER && token != GUC_REAL &&
token != GUC_UNQUOTED_STRING)
token != GUC_INTEGER && token != GUC_REAL &&
token != GUC_UNQUOTED_STRING)
goto parse_error;
opt_value = strdup(yytext);
if (opt_value == NULL)
goto out_of_memory;
if (token == GUC_STRING)
{
/* remove the beginning and ending quote/apostrophe */
/* first: shift the whole shooting match down one
character */
memmove(opt_value,opt_value+1,strlen(opt_value)-1);
/* second: null out the 2 characters we shifted */
opt_value[strlen(opt_value)-2]='\0';
/* do the escape thing. free()'s the strdup above */
opt_value=GUC_scanstr(opt_value);
}
if (token == GUC_STRING)
{
/* remove the beginning and ending quote/apostrophe */
/* first: shift the whole thing down one character */
memmove(opt_value,opt_value+1,strlen(opt_value)-1);
/* second: null out the 2 characters we shifted */
opt_value[strlen(opt_value)-2]='\0';
/* do the escape thing. free()'s the strdup above */
opt_value=GUC_scanstr(opt_value);
}
parse_state = 2;
break;
@@ -241,14 +240,14 @@ ProcessConfigFile(GucContext context)
for(item = head; item; item=item->next)
{
if (!set_config_option(item->name, item->value, context,
false, PGC_S_INFINITY))
PGC_S_FILE, false, false))
goto cleanup_exit;
}
/* If we got here all the options parsed okay. */
for(item = head; item; item=item->next)
set_config_option(item->name, item->value, context,
true, PGC_S_FILE);
PGC_S_FILE, false, true);
cleanup_exit:
free_name_value_list(head);