/*-------------------------------------------------------------------------

 *

 * pg_config.c

 *    Expose same output as pg_config except as an SRF

 *

 * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group

 * Portions Copyright (c) 1994, Regents of the University of California

 *

 * IDENTIFICATION

 *    src/backend/utils/misc/pg_config.c

 *

 *-------------------------------------------------------------------------

 */

#include "postgres.h"

#include "common/config_info.h"

#include "funcapi.h"

#include "miscadmin.h"

#include "utils/builtins.h"

Datum

pg_config(PG_FUNCTION_ARGS)

{

  ReturnSetInfo *rsinfo = (ReturnSetInfo *) fcinfo->resultinfo;

  ConfigData *configdata;

  size_t    configdata_len;

  int     i = 0;

  /* initialize our tuplestore */

  InitMaterializedSRF(fcinfo, 0);

  configdata = get_configdata(my_exec_path, &configdata_len);

  for (i = 0; i < configdata_len; i++)

  {

    Datum   values[2];

    bool    nulls[2];

    memset(values, 0, sizeof(values));

    memset(nulls, 0, sizeof(nulls));

    values[0] = CStringGetTextDatum(configdata[i].name);

    values[1] = CStringGetTextDatum(configdata[i].setting);

    tuplestore_putvalues(rsinfo->setResult, rsinfo->setDesc, values, nulls);

  }

  return (Datum) 0;

}