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archive/zzip: added struct zzip_input_stream

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Don't use the zzip_archive object for the input_stream.
This commit is contained in:
Max Kellermann 2009-12-31 10:25:01 +01:00
parent 55fbb67cfb
commit 9862521aec
1 changed files with 34 additions and 20 deletions
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54
src/archive/zzip_archive_plugin.c
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@ -35,7 +35,6 @@ struct zzip_archive {
struct archive_file base;
ZZIP_DIR *dir;
ZZIP_FILE *file;
GSList *list;
GSList *iter;
};
@ -117,27 +116,39 @@ zzip_archive_close(struct archive_file *file)
/* single archive handling */
struct zzip_input_stream {
struct zzip_archive *archive;
ZZIP_FILE *file;
};
static bool
zzip_archive_open_stream(struct archive_file *file, struct input_stream *is,
const char *pathname, GError **error_r)
{
struct zzip_archive *context = (struct zzip_archive *) file;
struct zzip_input_stream *zis;
ZZIP_STAT z_stat;
//setup file ops
is->plugin = &zzip_input_plugin;
//insert back reference
is->data = context;
//we are seekable (but its not recommendent to do so)
is->seekable = true;
zis = g_new(struct zzip_input_stream, 1);
context->file = zzip_file_open(context->dir, pathname, 0);
if (!context->file) {
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 false;
}
zzip_file_stat(context->file, &z_stat);
//setup file ops
is->plugin = &zzip_input_plugin;
//insert back reference
is->data = zis;
//we are seekable (but its not recommendent to do so)
is->seekable = true;
zzip_file_stat(zis->file, &z_stat);
is->size = z_stat.st_size;
return true;
}
@ -145,26 +156,28 @@ zzip_archive_open_stream(struct archive_file *file, struct input_stream *is,
static void
zzip_input_close(struct input_stream *is)
{
struct zzip_archive *context = (struct zzip_archive *) is->data;
zzip_file_close (context->file);
struct zzip_input_stream *zis = (struct zzip_input_stream *)is->data;
zzip_archive_close((struct archive_file *)context);
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_archive *context = (struct zzip_archive *) is->data;
struct zzip_input_stream *zis = (struct zzip_input_stream *)is->data;
int ret;
ret = zzip_file_read(context->file, ptr, size);
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(context->file);
is->offset = zzip_tell(zis->file);
return ret;
}
@ -172,16 +185,17 @@ zzip_input_read(struct input_stream *is, void *ptr, size_t size,
static bool
zzip_input_eof(struct input_stream *is)
{
struct zzip_archive *context = (struct zzip_archive *) is->data;
return (goffset)zzip_tell(context->file) == is->size;
struct zzip_input_stream *zis = (struct zzip_input_stream *)is->data;
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_archive *context = (struct zzip_archive *) is->data;
zzip_off_t ofs = zzip_seek(context->file, offset, whence);
struct zzip_input_stream *zis = (struct zzip_input_stream *)is->data;
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");