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archive/iso9660: added struct iso9660_input_stream

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Don't use the iso9660_archive_file object for the input_stream.
This commit is contained in:
Max Kellermann 2009-12-31 10:33:13 +01:00
parent 131cb0598a
commit 3ddf7b620c
1 changed files with 32 additions and 20 deletions
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52
src/archive/iso9660_archive_plugin.c
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@ -38,8 +38,6 @@ struct iso9660_archive_file {
struct archive_file base;
iso9660_t *iso;
iso9660_stat_t *statbuf;
size_t max_blocks;
GSList *list;
GSList *iter;
};
@ -157,51 +155,65 @@ iso9660_archive_close(struct archive_file *file)
/* single archive handling */
struct iso9660_input_stream {
struct iso9660_archive_file *archive;
iso9660_stat_t *statbuf;
size_t max_blocks;
};
static bool
iso9660_archive_open_stream(struct archive_file *file, struct input_stream *is,
const char *pathname, GError **error_r)
{
struct iso9660_archive_file *context =
(struct iso9660_archive_file *)file;
struct iso9660_input_stream *iis;
//setup file ops
is->plugin = &iso9660_input_plugin;
//insert back reference
is->data = context;
//we are not seekable
is->seekable = false;
iis = g_new(struct iso9660_input_stream, 1);
context->statbuf = iso9660_ifs_stat_translate (context->iso, pathname);
if (context->statbuf == NULL) {
iis->archive = context;
iis->statbuf = iso9660_ifs_stat_translate(context->iso, pathname);
if (iis->statbuf == NULL) {
g_free(iis);
g_set_error(error_r, iso9660_quark(), 0,
"not found in the ISO file: %s", pathname);
return false;
}
is->size = context->statbuf->size;
//setup file ops
is->plugin = &iso9660_input_plugin;
//insert back reference
is->data = iis;
//we are not seekable
is->seekable = false;
context->max_blocks = CEILING(context->statbuf->size, ISO_BLOCKSIZE);
is->size = iis->statbuf->size;
iis->max_blocks = CEILING(iis->statbuf->size, ISO_BLOCKSIZE);
return true;
}
static void
iso9660_input_close(struct input_stream *is)
{
struct iso9660_archive_file *context = is->data;
g_free(context->statbuf);
struct iso9660_input_stream *iis =
(struct iso9660_input_stream *)is->data;
iso9660_archive_close((struct archive_file *)context);
g_free(iis->statbuf);
iso9660_archive_close(&iis->archive->base);
}
static size_t
iso9660_input_read(struct input_stream *is, void *ptr, size_t size, GError **error_r)
{
struct iso9660_archive_file *context = (struct iso9660_archive_file *) is->data;
struct iso9660_input_stream *iis =
(struct iso9660_input_stream *)is->data;
int toread, readed = 0;
int no_blocks, cur_block;
size_t left_bytes = context->statbuf->size - is->offset;
size_t left_bytes = iis->statbuf->size - is->offset;
size = (size * ISO_BLOCKSIZE) / ISO_BLOCKSIZE;
@ -216,8 +228,8 @@ iso9660_input_read(struct input_stream *is, void *ptr, size_t size, GError **err
cur_block = is->offset / ISO_BLOCKSIZE;
readed = iso9660_iso_seek_read (context->iso, ptr,
context->statbuf->lsn + cur_block, no_blocks);
readed = iso9660_iso_seek_read (iis->archive->iso, ptr,
iis->statbuf->lsn + cur_block, no_blocks);
if (readed != no_blocks * ISO_BLOCKSIZE) {
g_set_error(error_r, iso9660_quark(), 0,