/* * Copyright (C) 2003-2009 The Music Player Daemon Project * http://www.musicpd.org * * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include <stdio.h> #include <string.h> #include <sys/types.h> #include <sys/stat.h> #include <unistd.h> #include <errno.h> #include <glib.h> #include "archive_api.h" /** * * archive_lookup is used to determine if part of pathname refers to an regular * file (archive). If so then its also used to split pathname into archive file * and path used to locate file in archive. It also returns suffix of the file. * How it works: * We do stat of the parent of input pathname as long as we find an regular file * Normally this should never happen. When routine returns true pathname modified * and split into archive, inpath and suffix. Otherwise nothing happens * * For example: * * /music/path/Talco.zip/Talco - Combat Circus/12 - A la pachenka.mp3 * is split into archive: /music/path/Talco.zip * inarchive pathname: Talco - Combat Circus/12 - A la pachenka.mp3 * and suffix: zip */ bool archive_lookup(char *pathname, char **archive, char **inpath, char **suffix) { char *pathdupe; int len, idx; struct stat st_info; bool ret = false; *archive = NULL; *inpath = NULL; *suffix = NULL; pathdupe = g_strdup(pathname); len = idx = strlen(pathname); while (idx > 0) { //try to stat if its real directory if (stat(pathdupe, &st_info) == -1) { if (errno != ENOTDIR) { g_warning("stat %s failed (errno=%d)\n", pathdupe, errno); break; } } else { //is something found ins original path (is not an archive) if (idx == len) { break; } //its a file ? if (S_ISREG(st_info.st_mode)) { //so the upper should be file pathname[idx] = 0; ret = true; *archive = pathname; *inpath = pathname + idx+1; //try to get suffix *suffix = NULL; while (idx > 0) { if (pathname[idx] == '.') { *suffix = pathname + idx + 1; break; } idx--; } break; } else { g_warning("not a regular file %s\n", pathdupe); break; } } //find one dir up while (idx > 0) { if (pathdupe[idx] == '/') { pathdupe[idx] = 0; break; } idx--; } } g_free(pathdupe); return ret; }