mirror of
https://github.com/postgres/postgres.git
synced 2025-12-19 17:02:53 +03:00
86ec86c2a6
Doing so doesn't work if bool is a macro rather than a typedef. Although c.h spends some effort to support configurations where bool is a preexisting macro, help_config.c has existed this way since 2003 (b700a6), and there have not been any reports of problems. Backpatch anyway since this is as riskless as it gets. Discussion: 20150812084351.GD8470@awork2.anarazel.de Backpatch: 9.0-master
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/*-------------------------------------------------------------------------
|
|
* help_config.c
|
|
*
|
|
* Displays available options under grand unified configuration scheme
|
|
*
|
|
* Options whose flag bits are set to GUC_NO_SHOW_ALL, GUC_NOT_IN_SAMPLE,
|
|
* or GUC_DISALLOW_IN_FILE are not displayed, unless the user specifically
|
|
* requests that variable by name
|
|
*
|
|
* Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
|
|
*
|
|
* IDENTIFICATION
|
|
* src/backend/utils/misc/help_config.c
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
#include "postgres.h"
|
|
|
|
#include <float.h>
|
|
#include <limits.h>
|
|
#include <unistd.h>
|
|
|
|
#include "utils/guc_tables.h"
|
|
#include "utils/help_config.h"
|
|
|
|
|
|
/*
|
|
* This union allows us to mix the numerous different types of structs
|
|
* that we are organizing.
|
|
*/
|
|
typedef union
|
|
{
|
|
struct config_generic generic;
|
|
struct config_bool _bool;
|
|
struct config_real real;
|
|
struct config_int integer;
|
|
struct config_string string;
|
|
struct config_enum _enum;
|
|
} mixedStruct;
|
|
|
|
|
|
static void printMixedStruct(mixedStruct *structToPrint);
|
|
static bool displayStruct(mixedStruct *structToDisplay);
|
|
|
|
|
|
int
|
|
GucInfoMain(void)
|
|
{
|
|
struct config_generic **guc_vars;
|
|
int numOpts,
|
|
i;
|
|
|
|
/* Initialize the guc_variables[] array */
|
|
build_guc_variables();
|
|
|
|
guc_vars = get_guc_variables();
|
|
numOpts = GetNumConfigOptions();
|
|
|
|
for (i = 0; i < numOpts; i++)
|
|
{
|
|
mixedStruct *var = (mixedStruct *) guc_vars[i];
|
|
|
|
if (displayStruct(var))
|
|
printMixedStruct(var);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* This function will return true if the struct passed to it
|
|
* should be displayed to the user.
|
|
*/
|
|
static bool
|
|
displayStruct(mixedStruct *structToDisplay)
|
|
{
|
|
return !(structToDisplay->generic.flags & (GUC_NO_SHOW_ALL |
|
|
GUC_NOT_IN_SAMPLE |
|
|
GUC_DISALLOW_IN_FILE));
|
|
}
|
|
|
|
|
|
/*
|
|
* This function prints out the generic struct passed to it. It will print out
|
|
* a different format, depending on what the user wants to see.
|
|
*/
|
|
static void
|
|
printMixedStruct(mixedStruct *structToPrint)
|
|
{
|
|
printf("%s\t%s\t%s\t",
|
|
structToPrint->generic.name,
|
|
GucContext_Names[structToPrint->generic.context],
|
|
_(config_group_names[structToPrint->generic.group]));
|
|
|
|
switch (structToPrint->generic.vartype)
|
|
{
|
|
|
|
case PGC_BOOL:
|
|
printf("BOOLEAN\t%s\t\t\t",
|
|
(structToPrint->_bool.reset_val == 0) ?
|
|
"FALSE" : "TRUE");
|
|
break;
|
|
|
|
case PGC_INT:
|
|
printf("INTEGER\t%d\t%d\t%d\t",
|
|
structToPrint->integer.reset_val,
|
|
structToPrint->integer.min,
|
|
structToPrint->integer.max);
|
|
break;
|
|
|
|
case PGC_REAL:
|
|
printf("REAL\t%g\t%g\t%g\t",
|
|
structToPrint->real.reset_val,
|
|
structToPrint->real.min,
|
|
structToPrint->real.max);
|
|
break;
|
|
|
|
case PGC_STRING:
|
|
printf("STRING\t%s\t\t\t",
|
|
structToPrint->string.boot_val ? structToPrint->string.boot_val : "");
|
|
break;
|
|
|
|
case PGC_ENUM:
|
|
printf("ENUM\t%s\t\t\t",
|
|
config_enum_lookup_by_value(&structToPrint->_enum,
|
|
structToPrint->_enum.boot_val));
|
|
break;
|
|
|
|
default:
|
|
write_stderr("internal error: unrecognized run-time parameter type\n");
|
|
break;
|
|
}
|
|
|
|
printf("%s\t%s\n",
|
|
(structToPrint->generic.short_desc == NULL) ? "" : _(structToPrint->generic.short_desc),
|
|
(structToPrint->generic.long_desc == NULL) ? "" : _(structToPrint->generic.long_desc));
|
|
}
|