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/*
* cbzip2.h
*
* This file is a part of NSIS.
*
* Copyright (C) 1999-2018 Nullsoft and Contributors
*
* Licensed under the zlib/libpng license (the "License");
* you may not use this file except in compliance with the License.
*
* Licence details can be found in the file COPYING.
*
* This software is provided 'as-is', without any express or implied
* warranty.
*
* Unicode support by Jim Park -- 08/24/2007
*/
#ifndef __CBZIP2_H__
#define __CBZIP2_H__
#include "compressor.h"
#include "bzip2/bzlib.h"
class CBzip2 : public ICompressor {
public:
virtual ~CBzip2() {}
virtual int Init(int level, unsigned int dict_size) {
last_ret = !BZ_STREAM_END;
stream = new bz_stream;
if (!stream) return BZ_MEM_ERROR;
return BZ2_bzCompressInit(stream, level, 0, 30);
}
virtual int End() {
int ret = BZ2_bzCompressEnd(stream);
delete stream;
return ret;
}
virtual int Compress(bool finish) {
// act like zlib when it comes to stream ending
if (last_ret == BZ_STREAM_END && finish)
return C_FINISHED;
last_ret = BZ2_bzCompress(stream, finish?BZ_FINISH:0);
if (last_ret < 0)
return last_ret;
return C_OK;
}
virtual void SetNextIn(char *in, unsigned int size) {
stream->next_in = (unsigned char*) in;
stream->avail_in = size;
}
virtual void SetNextOut(char *out, unsigned int size) {
stream->next_out = (unsigned char*) out;
stream->avail_out = size;
}
virtual char* GetNextOut() {
return (char*) stream->next_out;
}
virtual unsigned int GetAvailIn() {
return stream->avail_in;
}
virtual unsigned int GetAvailOut() {
return stream->avail_out;
}
virtual const TCHAR* GetName() {
return _T("bzip2");
}
virtual const TCHAR* GetErrStr(int err) {
switch (err)
{
case BZ_SEQUENCE_ERROR:
return _T("sequence error - bad call");
case BZ_PARAM_ERROR:
return _T("parameter error - bad call");
case BZ_MEM_ERROR:
return _T("not enough memory");
case BZ_CONFIG_ERROR:
return _T("config error");
default:
return _T("unknown error");
}
}
private:
bz_stream *stream;
int last_ret;
};
#endif
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