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Yet incomplete implementation of IsoNode cloning.

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(Commited to avoid tangling with upcomming 
 iso_write_opts_set_no_dummy_block_adr())
This commit is contained in:
Thomas Schmitt
2011-01-25 10:50:37 +01:00
parent 92073c45ef
commit a3eeda3d23
15 changed files with 613 additions and 53 deletions
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63
libisofs/filters/zisofs.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2009 Thomas Schmitt
* Copyright (c) 2009 - 2011 Thomas Schmitt
*
* This file is part of the libisofs project; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
@@ -22,6 +22,7 @@
#include "../filter.h"
#include "../fsource.h"
#include "../util.h"
#include "../stream.h"
#include <sys/types.h>
#include <sys/time.h>
@@ -167,6 +168,7 @@ static int ziso_compression_level = 6;
/*
* The common data payload of an individual Zisofs Filter IsoStream
* IMPORTANT: Any change must be reflected by ziso_clone_stream.
*/
typedef struct
{
@@ -183,6 +185,7 @@ typedef struct
/*
* The data payload of an individual Zisofs Filter Compressor IsoStream
* IMPORTANT: Any change must be reflected by ziso_clone_stream.
*/
typedef struct
{
@@ -198,6 +201,7 @@ typedef struct
/*
* The data payload of an individual Zisofs Filter Uncompressor IsoStream
* IMPORTANT: Any change must be reflected by ziso_clone_stream.
*/
typedef struct
{
@@ -779,13 +783,60 @@ IsoStream *ziso_get_input_stream(IsoStream *stream, int flag)
return data->orig;
}
static
int ziso_clone_stream(IsoStream *old_stream, IsoStream **new_stream, int flag)
{
int ret;
IsoStream *new_input_stream = NULL, *stream = NULL;
ZisofsFilterStreamData *stream_data, *old_stream_data;
ZisofsUncomprStreamData *uncompr, *old_uncompr;
ZisofsComprStreamData *compr, *old_compr;
ret = iso_stream_clone_filter_common(old_stream, &stream,
&new_input_stream, 0);
if (ret < 0)
return ret;
if (old_stream->class->read == &ziso_stream_uncompress) {
uncompr = calloc(1, sizeof(ZisofsUncomprStreamData));
if (uncompr == NULL)
goto no_mem;
stream_data = (ZisofsFilterStreamData *) uncompr;
old_uncompr = (ZisofsUncomprStreamData *) old_stream->data;
uncompr->header_size_div4 = old_uncompr->header_size_div4;
uncompr->block_size_log2 = old_uncompr->block_size_log2;
} else {
compr = calloc(1, sizeof(ZisofsComprStreamData));
if (compr == NULL)
goto no_mem;
stream_data = (ZisofsFilterStreamData *) compr;
old_compr = (ZisofsComprStreamData *) old_stream->data;
compr->orig_size = old_compr->orig_size;
compr->block_pointers = NULL;
}
old_stream_data = (ZisofsFilterStreamData *) old_stream->data;
stream_data->orig = new_input_stream;
stream_data->size = old_stream_data->size;
stream_data->running = NULL;
stream_data->id = ++ziso_ino_id;
stream->data = stream_data;
*new_stream = stream;
return ISO_SUCCESS;
no_mem:
if (new_input_stream != NULL)
iso_stream_unref(new_input_stream);
if (stream != NULL)
iso_stream_unref(stream);
return ISO_OUT_OF_MEM;
}
static
int ziso_cmp_ino(IsoStream *s1, IsoStream *s2);
IsoStreamIface ziso_stream_compress_class = {
3,
4,
"ziso",
ziso_stream_open,
ziso_stream_close,
@@ -796,12 +847,13 @@ IsoStreamIface ziso_stream_compress_class = {
ziso_stream_free,
ziso_update_size,
ziso_get_input_stream,
ziso_cmp_ino
ziso_cmp_ino,
ziso_clone_stream
};
IsoStreamIface ziso_stream_uncompress_class = {
3,
4,
"osiz",
ziso_stream_open,
ziso_stream_close,
@@ -812,7 +864,8 @@ IsoStreamIface ziso_stream_uncompress_class = {
ziso_stream_free,
ziso_update_size,
ziso_get_input_stream,
ziso_cmp_ino
ziso_cmp_ino,
ziso_clone_stream
};