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/*
* Copyright (C) 2003-2010 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.
*/
/**
* zip archive handling (requires zziplib)
*/
#include "config.h"
#include "archive/zzip_archive_plugin.h"
#include "archive_api.h"
#include "archive_api.h"
#include "input_plugin.h"
#include "refcount.h"
#include <zzip/zzip.h>
#include <glib.h>
#include <string.h>
struct zzip_archive {
struct archive_file base;
struct refcount ref;
ZZIP_DIR *dir;
GSList *list;
GSList *iter;
};
static const struct input_plugin zzip_input_plugin;
static inline GQuark
zzip_quark(void)
{
return g_quark_from_static_string("zzip");
}
/* archive open && listing routine */
static struct archive_file *
zzip_archive_open(const char *pathname, GError **error_r)
{
struct zzip_archive *context = g_malloc(sizeof(*context));
ZZIP_DIRENT dirent;
archive_file_init(&context->base, &zzip_archive_plugin);
refcount_init(&context->ref);
// open archive
context->list = NULL;
context->dir = zzip_dir_open(pathname, NULL);
if (context->dir == NULL) {
g_set_error(error_r, zzip_quark(), 0,
"Failed to open ZIP file %s", pathname);
return NULL;
}
while (zzip_dir_read(context->dir, &dirent)) {
//add only files
if (dirent.st_size > 0) {
context->list = g_slist_prepend(context->list,
g_strdup(dirent.d_name));
}
}
return &context->base;
}
static void
zzip_archive_scan_reset(struct archive_file *file)
{
struct zzip_archive *context = (struct zzip_archive *) file;
//reset iterator
context->iter = context->list;
}
static char *
zzip_archive_scan_next(struct archive_file *file)
{
struct zzip_archive *context = (struct zzip_archive *) 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
zzip_archive_close(struct archive_file *file)
{
struct zzip_archive *context = (struct zzip_archive *) file;
if (!refcount_dec(&context->ref))
return;
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);
g_free(context);
}
/* single archive handling */
struct zzip_input_stream {
struct input_stream base;
struct zzip_archive *archive;
ZZIP_FILE *file;
};
static struct input_stream *
zzip_archive_open_stream(struct archive_file *file,
const char *pathname, GError **error_r)
{
struct zzip_archive *context = (struct zzip_archive *) file;
struct zzip_input_stream *zis;
ZZIP_STAT z_stat;
zis = g_new(struct zzip_input_stream, 1);
input_stream_init(&zis->base, &zzip_input_plugin);
zis->archive = context;
zis->file = zzip_file_open(context->dir, pathname, 0);
if (zis->file == NULL) {
g_free(zis);
g_set_error(error_r, zzip_quark(), 0,
"not found in the ZIP file: %s", pathname);
return NULL;
}
zis->base.ready = true;
//we are seekable (but its not recommendent to do so)
zis->base.seekable = true;
zzip_file_stat(zis->file, &z_stat);
zis->base.size = z_stat.st_size;
refcount_inc(&context->ref);
return &zis->base;
}
static void
zzip_input_close(struct input_stream *is)
{
struct zzip_input_stream *zis = (struct zzip_input_stream *)is;
zzip_file_close(zis->file);
zzip_archive_close(&zis->archive->base);
g_free(zis);
}
static size_t
zzip_input_read(struct input_stream *is, void *ptr, size_t size,
GError **error_r)
{
struct zzip_input_stream *zis = (struct zzip_input_stream *)is;
int ret;
ret = zzip_file_read(zis->file, ptr, size);
if (ret < 0) {
g_set_error(error_r, zzip_quark(), ret,
"zzip_file_read() has failed");
return 0;
}
is->offset = zzip_tell(zis->file);
return ret;
}
static bool
zzip_input_eof(struct input_stream *is)
{
struct zzip_input_stream *zis = (struct zzip_input_stream *)is;
return (goffset)zzip_tell(zis->file) == is->size;
}
static bool
zzip_input_seek(struct input_stream *is,
goffset offset, int whence, GError **error_r)
{
struct zzip_input_stream *zis = (struct zzip_input_stream *)is;
zzip_off_t ofs = zzip_seek(zis->file, offset, whence);
if (ofs != -1) {
g_set_error(error_r, zzip_quark(), ofs,
"zzip_seek() has failed");
is->offset = ofs;
return true;
}
return false;
}
/* exported structures */
static const char *const zzip_archive_extensions[] = {
"zip",
NULL
};
static const struct input_plugin zzip_input_plugin = {
.close = zzip_input_close,
.read = zzip_input_read,
.eof = zzip_input_eof,
.seek = zzip_input_seek,
};
const struct archive_plugin zzip_archive_plugin = {
.name = "zzip",
.open = zzip_archive_open,
.scan_reset = zzip_archive_scan_reset,
.scan_next = zzip_archive_scan_next,
.open_stream = zzip_archive_open_stream,
.close = zzip_archive_close,
.suffixes = zzip_archive_extensions
};
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