## root/htags/path2url.c

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## DEFINITIONS

This source file includes following definitions.

1. load_gpath
2. unload_gpath
3. path2fid

    /*
     * Copyright (c) 2004 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
    #ifdef HAVE_STRING_H
    #include <string.h>
    #else
    #include <strings.h>
    #endif

    #include "global.h"
    #include "assoc.h"
    #include "htags.h"
    #include "path2url.h"

    static ASSOC *assoc;
    static int nextkey;

    /*
     * load_gpath: load gpath tag file.
     *
     * load the contents of GPATH file into the memory.
     */
    void
    load_gpath(const char *dbpath)
    {
            DBOP *dbop;
            const char *path;
            int n;

            assoc = assoc_open('a');
            nextkey = 0;
            dbop = dbop_open(makepath(dbpath, dbname(GPATH), NULL), 0, 0, 0);
            if (dbop == NULL)
                    die("cannot open '%s'.", makepath(dbpath, dbname(GPATH), NULL));
            for (path = dbop_first(dbop, "./", NULL, DBOP_PREFIX | DBOP_KEY); path; path = dbop_next(dbop)) {
                    const char *no = dbop_lastdat(dbop, NULL);

                    path += 2;                      /* remove './' */
                    assoc_put(assoc, path, no);
                    n = atoi(no);
                    if (n > nextkey)
                            nextkey = n;
            }
            dbop_close(dbop);
    }
    /*
     * unload_gpath: load gpath tag file.
     *
     * load the contents of GPATH file into the memory.
     */
    void
    unload_gpath(void)
    {
            assoc_close(assoc);
    }
    /*
     * path2fid: convert the path name into the file id.
     *
     *      i)      path    path name
     *      r)              id
     */
    const char *
    path2fid(const char *path)
    {
            static char number[32];
            const char *p;

            if (strlen(path) > MAXPATHLEN)
                    die("path name too long. '%s'", path);
            /*
             * accept both aaa and ./aaa.
             */
            if (*path == '.' && *(path + 1) == '/')
                    path += 2;
            p = assoc_get(assoc, path);
            if (!p) {
                    snprintf(number, sizeof(number), "%d", ++nextkey);
                    assoc_put(assoc, path, number);
                    p = number;
            }
            return p;
    }

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