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Commitc98c911

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committed
Minor code embellishments.
1 parenta1feb90 commitc98c911

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1 file changed

+43
-50
lines changed
  • src/backend/utils/misc

1 file changed

+43
-50
lines changed

‎src/backend/utils/misc/guc.c‎

Lines changed: 43 additions & 50 deletions
Original file line numberDiff line numberDiff line change
@@ -10,7 +10,7 @@
1010
* Written by Peter Eisentraut <peter_e@gmx.net>.
1111
*
1212
* IDENTIFICATION
13-
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.481 2008/11/21 20:14:27 mha Exp $
13+
* $PostgreSQL: pgsql/src/backend/utils/misc/guc.c,v 1.482 2008/12/02 02:00:32 alvherre Exp $
1414
*
1515
*--------------------------------------------------------------------
1616
*/
@@ -4382,16 +4382,17 @@ parse_real(const char *value, double *result)
43824382
constchar*
43834383
config_enum_lookup_by_value(structconfig_enum*record,intval)
43844384
{
4385-
conststructconfig_enum_entry*entry=record->options;
4386-
while (entry&&entry->name)
4385+
conststructconfig_enum_entry*entry;
4386+
4387+
for (entry=record->options;entry&&entry->name;entry++)
43874388
{
43884389
if (entry->val==val)
43894390
returnentry->name;
4390-
entry++;
43914391
}
4392+
43924393
elog(ERROR,"could not find enum option %d for %s",
43934394
val,record->gen.name);
4394-
returnNULL;/* silence compiler */
4395+
returnNULL;/* silence compiler */
43954396
}
43964397

43974398

@@ -4400,86 +4401,71 @@ config_enum_lookup_by_value(struct config_enum *record, int val)
44004401
* (case-insensitive).
44014402
* If the enum option is found, sets the retval value and returns
44024403
* true. If it's not found, return FALSE and retval is set to 0.
4403-
*
44044404
*/
44054405
bool
4406-
config_enum_lookup_by_name(structconfig_enum*record,constchar*value,int*retval)
4406+
config_enum_lookup_by_name(structconfig_enum*record,constchar*value,
4407+
int*retval)
44074408
{
4408-
conststructconfig_enum_entry*entry=record->options;
4409-
4410-
if (retval)
4411-
*retval=0;/* suppress compiler warning */
4412-
4413-
while (entry&&entry->name)
4409+
conststructconfig_enum_entry*entry;
4410+
4411+
for (entry=record->options;entry&&entry->name;entry++)
44144412
{
44154413
if (pg_strcasecmp(value,entry->name)==0)
44164414
{
44174415
*retval=entry->val;
44184416
return TRUE;
44194417
}
4420-
entry++;
44214418
}
4419+
4420+
*retval=0;
44224421
return FALSE;
44234422
}
44244423

44254424

44264425
/*
44274426
* Return a list of all available options for an enum, excluding
4428-
* hidden ones, separated by", " (comma-space).
4427+
* hidden ones, separated bythe given separator.
44294428
* If prefix is non-NULL, it is added before the first enum value.
44304429
* If suffix is non-NULL, it is added to the end of the string.
44314430
*/
44324431
staticchar*
44334432
config_enum_get_options(structconfig_enum*record,constchar*prefix,
44344433
constchar*suffix,constchar*separator)
44354434
{
4436-
conststructconfig_enum_entry*entry=record->options;
4437-
intlen=0;
4438-
char*hintmsg;
4439-
4440-
if (!entry|| !entry->name)
4441-
returnNULL;/* Should not happen */
4435+
conststructconfig_enum_entry*entry;
4436+
StringInfoDataretstr;
4437+
intseplen;
44424438

4443-
while (entry&&entry->name)
4444-
{
4445-
if (!entry->hidden)
4446-
len+=strlen(entry->name)+strlen(separator);
4447-
4448-
entry++;
4449-
}
4450-
4451-
hintmsg=palloc(len+strlen(prefix)+strlen(suffix)+2);
4452-
4453-
strcpy(hintmsg,prefix);
4439+
initStringInfo(&retstr);
4440+
appendStringInfoString(&retstr,prefix);
44544441

4455-
entry=record->options;
4456-
while (entry&&entry->name)
4442+
seplen=strlen(separator);
4443+
for (entry=record->options;entry&&entry->name;entry++)
44574444
{
44584445
if (!entry->hidden)
44594446
{
4460-
strcat(hintmsg,entry->name);
4461-
strcat(hintmsg,separator);
4447+
appendStringInfoString(&retstr,entry->name);
4448+
appendBinaryStringInfo(&retstr,separator,seplen);
44624449
}
4463-
4464-
entry++;
44654450
}
44664451

4467-
len=strlen(hintmsg);
4468-
44694452
/*
44704453
* All the entries may have been hidden, leaving the string empty
44714454
* if no prefix was given. This indicates a broken GUC setup, since
44724455
* there is no use for an enum without any values, so we just check
44734456
* to make sure we don't write to invalid memory instead of actually
44744457
* trying to do something smart with it.
44754458
*/
4476-
if (len >=strlen(separator))
4459+
if (retstr.len >=seplen)
4460+
{
44774461
/* Replace final separator */
4478-
hintmsg[len-strlen(separator)]='\0';
4462+
retstr.data[retstr.len-seplen]='\0';
4463+
retstr.len-=seplen;
4464+
}
44794465

4480-
strcat(hintmsg,suffix);
4466+
appendStringInfoString(&retstr,suffix);
44814467

4482-
returnhintmsg;
4468+
returnretstr.data;
44834469
}
44844470

44854471
/*
@@ -5047,7 +5033,11 @@ set_config_option(const char *name, const char *value,
50475033
{
50485034
if (!config_enum_lookup_by_name(conf,value,&newval))
50495035
{
5050-
char*hintmsg=config_enum_get_options(conf,"Available values: ",".",", ");
5036+
char*hintmsg;
5037+
5038+
hintmsg=config_enum_get_options(conf,
5039+
"Available values: ",
5040+
".",", ");
50515041

50525042
ereport(elevel,
50535043
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
@@ -6253,13 +6243,16 @@ GetConfigOptionByNum(int varnum, const char **values, bool *noshow)
62536243

62546244
/* enumvals */
62556245
/* NOTE! enumvals with double quotes in them are not supported! */
6256-
values[11]=config_enum_get_options((structconfig_enum*)conf,"{\"","\"}","\",\"");
6246+
values[11]=config_enum_get_options((structconfig_enum*)conf,
6247+
"{\"","\"}","\",\"");
62576248

62586249
/* boot_val */
6259-
values[12]=pstrdup(config_enum_lookup_by_value(lconf,lconf->boot_val));
6250+
values[12]=pstrdup(config_enum_lookup_by_value(lconf,
6251+
lconf->boot_val));
62606252

62616253
/* reset_val */
6262-
values[13]=pstrdup(config_enum_lookup_by_value(lconf,lconf->reset_val));
6254+
values[13]=pstrdup(config_enum_lookup_by_value(lconf,
6255+
lconf->reset_val));
62636256
}
62646257
break;
62656258

@@ -6672,8 +6665,8 @@ is_newvalue_equal(struct config_generic * record, const char *newvalue)
66726665
structconfig_enum*conf= (structconfig_enum*)record;
66736666
intnewval;
66746667

6675-
returnconfig_enum_lookup_by_name(conf,newvalue,&newval)
6676-
&&*conf->variable==newval;
6668+
returnconfig_enum_lookup_by_name(conf,newvalue,&newval)&&
6669+
*conf->variable==newval;
66776670
}
66786671
}
66796672

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