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authorViliam Mateicka <viliam.mateicka@gmail.com>2008-12-16 21:46:11 +0100
committerViliam Mateicka <viliam.mateicka@gmail.com>2008-12-16 21:46:11 +0100
commitddcf0a407876ef886ca8634daa223c6f27c236dc (patch)
tree64661abf5a83b688a9ec47d8270a788ba0cec2ff /src/archive/zip_plugin.c
parent98fd9b7da8547efe81d473371bb3ca7620c7b2b2 (diff)
downloadmpd-ddcf0a407876ef886ca8634daa223c6f27c236dc.tar.gz
mpd-ddcf0a407876ef886ca8634daa223c6f27c236dc.tar.xz
mpd-ddcf0a407876ef886ca8634daa223c6f27c236dc.zip
archiveapi: archive plugin for ZIP files
Diffstat (limited to '')
-rw-r--r--src/archive/zip_plugin.c196
1 files changed, 196 insertions, 0 deletions
diff --git a/src/archive/zip_plugin.c b/src/archive/zip_plugin.c
new file mode 100644
index 000000000..6ef53a625
--- /dev/null
+++ b/src/archive/zip_plugin.c
@@ -0,0 +1,196 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2008 Viliam Mateicka <viliam.mateicka@gmail.com>
+ * This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/**
+ * zip archive handling (requires zziplib)
+ */
+
+#include "archive_api.h"
+#include "archive_api.h"
+#include "input_stream.h"
+#include "utils.h"
+
+#include <zzip/zzip.h>
+#include <glib.h>
+#include <string.h>
+
+typedef struct {
+ ZZIP_DIR *dir;
+ ZZIP_FILE *file;
+ size_t length;
+ GSList *list;
+ GSList *iter;
+} zip_context;
+
+static const struct input_plugin zip_inputplugin;
+
+/* archive open && listing routine */
+
+static struct archive_file *
+zip_open(char * pathname)
+{
+ zip_context *context = g_malloc(sizeof(zip_context));
+ ZZIP_DIRENT dirent;
+
+ // open archive
+ context->list = NULL;
+ context->dir = zzip_dir_open(pathname, 0);
+ if (context->dir == NULL) {
+ g_warning("zipfile %s open failed\n", pathname);
+ return NULL;
+ }
+
+ while (zzip_dir_read(context->dir, &dirent)) {
+ context->list = g_slist_prepend( context->list, xstrdup(dirent.d_name));
+ }
+
+ return (struct archive_file *)context;
+}
+
+static void
+zip_scan_reset(struct archive_file *file)
+{
+ zip_context *context = (zip_context *) file;
+ //reset iterator
+ context->iter = context->list;
+}
+
+static char *
+zip_scan_next(struct archive_file *file)
+{
+ zip_context *context = (zip_context *) file;
+ char *data = NULL;
+ if (context->iter != NULL) {
+ ///fetch data and goto next
+ data = context->iter->data;
+ context->iter = g_slist_next(context->iter);
+ }
+ return data;
+}
+
+static void
+zip_close(struct archive_file *file)
+{
+ zip_context *context = (zip_context *) file;
+ if (context->list) {
+ //free list
+ for (GSList *tmp = context->list; tmp != NULL; tmp = g_slist_next(tmp))
+ g_free(tmp->data);
+ g_slist_free(context->list);
+ }
+ //close archive
+ zzip_dir_close (context->dir);
+ context->dir = NULL;
+}
+
+/* single archive handling */
+
+static void
+zip_setup_stream(struct archive_file *file, struct input_stream *is)
+{
+ zip_context *context = (zip_context *) file;
+ //setup file ops
+ is->plugin = &zip_inputplugin;
+ //insert back reference
+ is->archive = context;
+ //we are not seekable
+ is->seekable = false;
+}
+
+
+static bool
+zip_is_open(struct input_stream *is, const char *pathname)
+{
+ zip_context *context = (zip_context *) is->archive;
+ ZZIP_STAT z_stat;
+
+ context->file = zzip_file_open(context->dir, pathname, 0);
+ if (!context->file) {
+ g_warning("file %s not found in the zipfile\n", pathname);
+ return false;
+ }
+ zzip_file_stat(context->file, &z_stat);
+ context->length = z_stat.st_size;
+ return true;
+}
+
+static void
+zip_is_close(struct input_stream *is)
+{
+ zip_context *context = (zip_context *) is->archive;
+ zzip_file_close (context->file);
+}
+
+static size_t
+zip_is_read(struct input_stream *is, void *ptr, size_t size)
+{
+ zip_context *context = (zip_context *) is->archive;
+ int ret;
+ ret = zzip_file_read(context->file, ptr, size);
+ if (ret < 0) {
+ g_warning("error %d reading zipfile\n", ret);
+ return 0;
+ }
+ return ret;
+}
+
+static bool
+zip_is_eof(struct input_stream *is)
+{
+ zip_context *context = (zip_context *) is->archive;
+ return ((size_t) zzip_tell(context->file) == context->length);
+}
+
+static bool
+zip_is_seek(G_GNUC_UNUSED struct input_stream *is,
+ G_GNUC_UNUSED off_t offset, G_GNUC_UNUSED int whence)
+{
+ return false;
+}
+
+static int
+zip_is_buffer(G_GNUC_UNUSED struct input_stream *is)
+{
+ return 0;
+}
+
+/* exported structures */
+
+static const char *const zip_extensions[] = {
+ "zip",
+ NULL
+};
+
+static const struct input_plugin zip_inputplugin = {
+ .open = zip_is_open,
+ .close = zip_is_close,
+ .read = zip_is_read,
+ .eof = zip_is_eof,
+ .seek = zip_is_seek,
+ .buffer = zip_is_buffer
+};
+
+const struct archive_plugin zip_plugin = {
+ .name = "zip",
+ .open = zip_open,
+ .scan_reset = zip_scan_reset,
+ .scan_next = zip_scan_next,
+ .setup_stream = zip_setup_stream,
+ .close = zip_close,
+ .suffixes = zip_extensions
+};