wmaker/WINGs/findfile.c

/*
 *  Window Maker miscelaneous function library
 *
 *  Copyright (c) 1997-2003 Alfredo K. Kojima
 *
 *  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 2 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, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
 *  MA 02110-1301, USA.
 */

#include "wconfig.h"

#include "WUtil.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <pwd.h>
#include <limits.h>


char *wfindfileinarray(WMPropList *array, const char *file)
{
	int i;
	char *path;
	int len, flen;
	char *fullpath;

	if (!file)
		return NULL;

	if (*file == '/' || *file == '~' || !array) {
		if (access(file, F_OK) < 0) {
			fullpath = wexpandpath(file);
			if (!fullpath)
				return NULL;

			if (access(fullpath, F_OK) < 0) {
				wfree(fullpath);
				return NULL;
			} else {
				return fullpath;
			}
		} else {
			return wstrdup(file);
		}
	}

	flen = strlen(file);
	for (i = 0; i < WMGetPropListItemCount(array); i++) {
		WMPropList *prop;
		char *p;

		prop = WMGetFromPLArray(array, i);
		if (!prop)
			continue;
		p = WMGetFromPLString(prop);

		len = strlen(p);
		path = wmalloc(len + flen + 2);
		path = memcpy(path, p, len);
		path[len] = 0;
		if (wstrlcat(path, "/", len + flen + 2) >= len + flen + 2 ||
		    wstrlcat(path, file, len + flen + 2) >= len + flen + 2) {
			wfree(path);
			return NULL;
		}
		/* expand tilde */
		fullpath = wexpandpath(path);
		wfree(path);
		if (fullpath) {
			/* check if file exists */
			if (access(fullpath, F_OK) == 0) {
				return fullpath;
			}
			wfree(fullpath);
		}
	}
	return NULL;
}