mirror of https://github.com/Gnucash/gnucash
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.9 KiB
110 lines
2.9 KiB
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
|
|
/*
|
|
* gsf-input-iochannel.c: BZ2 based input
|
|
*
|
|
* Copyright (C) 2003-2004 Dom Lachowicz (cinamod@hotmail.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of version 2.1 of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation.
|
|
*
|
|
* 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 Lesser General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
|
|
* USA
|
|
*/
|
|
|
|
#include <gsf-config.h>
|
|
#include <gsf-input-bzip.h>
|
|
#include <gsf-output-memory.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_BZ2
|
|
/* For getting FILE. Don't ask. */
|
|
#include <stdio.h>
|
|
#include <bzlib.h>
|
|
#define BZ_BUFSIZ 1024
|
|
#endif
|
|
|
|
/**
|
|
* gsf_input_memory_new_from_bzip :
|
|
* @source : a #GsfInput
|
|
* @err : a #GError
|
|
*
|
|
* Returns a new #GsfInputMemory or NULL.
|
|
*/
|
|
GsfInput *
|
|
gsf_input_memory_new_from_bzip (GsfInput *source, GError **err)
|
|
{
|
|
#ifndef HAVE_BZ2
|
|
if (err)
|
|
*err = g_error_new (gsf_input_error_id (), 0,
|
|
"BZ2 support not enabled");
|
|
return NULL;
|
|
#else
|
|
bz_stream bzstm;
|
|
GsfInput *mem = NULL;
|
|
GsfOutput *sink = NULL;
|
|
guint8 out_buf [BZ_BUFSIZ];
|
|
int bzerr = BZ_OK;
|
|
|
|
g_return_val_if_fail (source != NULL, NULL);
|
|
|
|
memset (&bzstm, 0, sizeof (bzstm));
|
|
if (BZ_OK != BZ2_bzDecompressInit (&bzstm, 0, 0)) {
|
|
if (err)
|
|
*err = g_error_new (gsf_input_error_id (), 0,
|
|
"BZ2 decompress init failed");
|
|
return NULL;
|
|
}
|
|
|
|
sink = gsf_output_memory_new ();
|
|
|
|
for (;;) {
|
|
bzstm.next_out = (char *)out_buf;
|
|
bzstm.avail_out = (unsigned int)sizeof (out_buf);
|
|
|
|
if (bzstm.avail_in == 0) {
|
|
bzstm.avail_in = (unsigned int)MIN (gsf_input_remaining (source), BZ_BUFSIZ);
|
|
bzstm.next_in = (char *)gsf_input_read (source, bzstm.avail_in, NULL);
|
|
}
|
|
|
|
bzerr = BZ2_bzDecompress (&bzstm);
|
|
if (bzerr != BZ_OK && bzerr != BZ_STREAM_END) {
|
|
if (err)
|
|
*err = g_error_new (gsf_input_error_id (), 0,
|
|
"BZ2 decompress failed");
|
|
BZ2_bzDecompressEnd (&bzstm);
|
|
gsf_output_close (sink);
|
|
g_object_unref (G_OBJECT (sink));
|
|
return NULL;
|
|
}
|
|
|
|
gsf_output_write (sink, BZ_BUFSIZ - bzstm.avail_out, out_buf);
|
|
if (bzerr == BZ_STREAM_END)
|
|
break;
|
|
}
|
|
|
|
gsf_output_close (sink);
|
|
|
|
if (BZ_OK != BZ2_bzDecompressEnd (&bzstm)) {
|
|
if (err)
|
|
*err = g_error_new (gsf_input_error_id (), 0,
|
|
"BZ2 decompress end failed");
|
|
g_object_unref (G_OBJECT (sink));
|
|
return NULL;
|
|
}
|
|
|
|
mem = gsf_input_memory_new_clone (
|
|
gsf_output_memory_get_bytes (GSF_OUTPUT_MEMORY (sink)),
|
|
gsf_output_size (sink));
|
|
g_object_unref (G_OBJECT (sink));
|
|
return mem;
|
|
#endif
|
|
}
|