root/libutil/defined.c

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DEFINITIONS

This source file includes following definitions.
  1. defined

/*
 * Copyright (c) 1998, 1999, 2000, 2001
 *      Tama Communications Corporation
 *
 * This file is part of GNU GLOBAL.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif

#include "die.h"
#include "dbop.h"
#include "defined.h"
#include "makepath.h"

static DBOP *dbop = NULL;

/*
 * Tag command that supports referenced tag must call this function
 * to decide whether or not the tag is defined.
 */
int
defined(const char *name)
{
        if (dbop == NULL) {
                const char *dbpath;

                /*
                 * gtags(1) set GTAGSDBPATH to the path GTAGS exist.
                 */
                if (!(dbpath = getenv("GTAGSDBPATH")))
                        dbpath = ".";
                dbop = dbop_open(makepath(dbpath, "GTAGS", NULL), 0, 0, 0);
                if (dbop == NULL)
                        die("'GTAGS' not found.");
        }
        if (dbop_get(dbop, name))
                return 1;
        return 0;
}

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