9d1a34e30b
All sources which might work with large files must include config.h, to get Large File Support on 32 bit platforms.
112 lines
2.9 KiB
C
112 lines
2.9 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h" /* must be first for large file support */
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#include "archive_api.h"
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <errno.h>
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#include <glib.h>
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/**
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*
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* archive_lookup is used to determine if part of pathname refers to an regular
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* file (archive). If so then its also used to split pathname into archive file
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* and path used to locate file in archive. It also returns suffix of the file.
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* How it works:
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* We do stat of the parent of input pathname as long as we find an regular file
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* Normally this should never happen. When routine returns true pathname modified
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* and split into archive, inpath and suffix. Otherwise nothing happens
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*
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* For example:
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*
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* /music/path/Talco.zip/Talco - Combat Circus/12 - A la pachenka.mp3
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* is split into archive: /music/path/Talco.zip
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* inarchive pathname: Talco - Combat Circus/12 - A la pachenka.mp3
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* and suffix: zip
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*/
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bool archive_lookup(char *pathname, char **archive, char **inpath, char **suffix)
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{
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char *pathdupe;
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int len, idx;
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struct stat st_info;
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bool ret = false;
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*archive = NULL;
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*inpath = NULL;
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*suffix = NULL;
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pathdupe = g_strdup(pathname);
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len = idx = strlen(pathname);
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while (idx > 0) {
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//try to stat if its real directory
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if (stat(pathdupe, &st_info) == -1) {
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if (errno != ENOTDIR) {
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g_warning("stat %s failed (errno=%d)\n", pathdupe, errno);
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break;
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}
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} else {
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//is something found ins original path (is not an archive)
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if (idx == len) {
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break;
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}
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//its a file ?
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if (S_ISREG(st_info.st_mode)) {
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//so the upper should be file
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pathname[idx] = 0;
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ret = true;
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*archive = pathname;
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*inpath = pathname + idx+1;
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//try to get suffix
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*suffix = NULL;
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while (idx > 0) {
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if (pathname[idx] == '.') {
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*suffix = pathname + idx + 1;
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break;
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}
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idx--;
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}
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break;
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} else {
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g_warning("not a regular file %s\n", pathdupe);
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break;
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}
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}
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//find one dir up
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while (idx > 0) {
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if (pathdupe[idx] == '/') {
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pathdupe[idx] = 0;
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break;
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}
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idx--;
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}
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}
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g_free(pathdupe);
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return ret;
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}
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