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-rw-r--r--src/ArchiveLookup.cxx111
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diff --git a/src/ArchiveLookup.cxx b/src/ArchiveLookup.cxx
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+/*
+ * Copyright (C) 2003-2013 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 "config.h" /* must be first for large file support */
+#include "ArchiveLookup.hxx"
+
+#include <stdio.h>
+
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <glib.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;
+}
+