/*
 * Copyright (c) 2014, 2015
 *      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
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#ifdef STDC_HEADERS
#include <stdlib.h>
#endif

#include "getdbpath.h"
#include "gparam.h"
#include "locatestring.h"
#include "nearsort.h"

static char nearbase[MAXPATHLEN];

const char *
set_nearbase_path(const char *path)
{
	char real[MAXPATHLEN];
	const char *root = get_root();

	if (root[0] == '\0' || realpath(path, real) == NULL)
		return NULL;
	if (locatestring(real, root, MATCH_AT_FIRST) == NULL)
		return NULL;
	snprintf(nearbase, sizeof(nearbase), "./%s/", real + strlen(root) + 1);
	return nearbase;
}
const char *
get_nearbase_path(void)
{
	return nearbase[0] ? (const char *)nearbase : NULL;
}
int
get_nearness(const char *p1, const char *p2)
{
	int parts = 0;
	for (; *p1 && *p2; p1++, p2++) {
		if (*p1 != *p2)
			break;
		if (*p1 == '/')
			parts++;
	}
	return parts;
}
