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decompress_plugin_demo.h
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//decompress_plugin_demo.h
// decompress plugin demo for HDiffz\HPatchz
/*
The MIT License (MIT)
Copyright (c) 2012-2017 HouSisong
Permission is hereby granted, free of charge, to any person
obtaining a copy of this software and associated documentation
files (the "Software"), to deal in the Software without
restriction, including without limitation the rights to use,
copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be
included in all copies of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef HPatch_decompress_plugin_demo_h
#define HPatch_decompress_plugin_demo_h
//decompress plugin demo:
// zlibDecompressPlugin; // support all deflate encoding by zlib
// ldefDecompressPlugin; // optimized deompress speed for deflate encoding
// bz2DecompressPlugin;
// lzmaDecompressPlugin;
// lzma2DecompressPlugin;
// lz4DecompressPlugin;
// zstdDecompressPlugin;
// brotliDecompressPlugin;
// lzhamDecompressPlugin;
// tuzDecompressPlugin;
// _bz2DecompressPlugin_unsz : support for bspatch_with_cache()
// _7zXZDecompressPlugin : support for vcpatch_with_cache(), diffData created by "xdelta3 -S lzma ..."
// _7zXZDecompressPlugin_a : support for vcpatch_with_cache(), diffData created by "hdiffz -VCD-compressLevel ..."
#include <stdlib.h> //malloc free
#include <stdio.h> //fprintf
#include "libHDiffPatch/HPatch/patch_types.h"
#ifndef kDecompressBufSize
# define kDecompressBufSize (1024*32)
#endif
#ifndef _IsNeedIncludeDefaultCompressHead
# define _IsNeedIncludeDefaultCompressHead 1
#endif
#define _dec_memErr() _hpatch_update_decError(decompressPlugin,hpatch_dec_mem_error)
#define _dec_memErr_rt() do { _dec_memErr(); return 0; } while(0)
#define _dec_openErr_rt() do { _hpatch_update_decError(decompressPlugin,hpatch_dec_open_error); return 0; } while(0)
#define _dec_close_check(value) { if (!(value)) { LOG_ERR("check "#value " ERROR!\n"); \
result=hpatch_FALSE; _hpatch_update_decError(decompressPlugin,hpatch_dec_close_error); } }
#define _dec_onDecErr_rt() do { if (!(self)->decError) (self)->decError=hpatch_dec_error; return 0; } while(0)
#define _dec_onDecErr_up() do { if ((self)->decError) _hpatch_update_decError(decompressPlugin,(self)->decError); } while(0)
static void* _dec_malloc(hpatch_size_t size) {
void* result=malloc(size);
if (!result) LOG_ERRNO(errno);
return result;
}
#define __dec_Alloc_fun(_type_TDecompress,p,size) { \
void* result=_dec_malloc(size); \
if (!result) \
((_type_TDecompress*)p)->decError=hpatch_dec_mem_error; \
return result; }
static void __dec_free(void* _, void* address){
if (address) free(address); }
#ifdef _CompressPlugin_zlib
#if (_IsNeedIncludeDefaultCompressHead)
# include "zlib.h" // http://zlib.net/ https://github.com/madler/zlib
#endif
typedef struct _zlib_TDecompress{
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
const struct hpatch_TStreamInput* codeStream;
unsigned char* dec_buf;
size_t dec_buf_size;
z_stream d_stream;
signed char windowBits;
hpatch_dec_error_t decError;
} _zlib_TDecompress;
static void * __zlib_dec_Alloc(void* p,uInt items,uInt size)
__dec_Alloc_fun(_zlib_TDecompress,p,((items)*(size_t)(size)))
static hpatch_BOOL _zlib_is_can_open(const char* compressType){
return (0==strcmp(compressType,"zlib"))||(0==strcmp(compressType,"pzlib"));
}
static _zlib_TDecompress* _zlib_decompress_open_at(hpatch_TDecompress* decompressPlugin,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end,
int isSavedWindowBits,
_zlib_TDecompress* self,size_t _self_and_buf_size){
int ret;
signed char kWindowBits=-MAX_WBITS;
assert(_self_and_buf_size>sizeof(_zlib_TDecompress));
if (isSavedWindowBits){//load kWindowBits
if (code_end-code_begin<1) _dec_openErr_rt();
if (!codeStream->read(codeStream,code_begin,(unsigned char*)&kWindowBits,
(unsigned char*)&kWindowBits+1)) return 0;
++code_begin;
}
memset(self,0,sizeof(_zlib_TDecompress));
self->dec_buf=((unsigned char*)self)+sizeof(_zlib_TDecompress);
self->dec_buf_size=_self_and_buf_size-sizeof(_zlib_TDecompress);
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
self->windowBits=kWindowBits;
self->d_stream.zalloc=__zlib_dec_Alloc;
self->d_stream.zfree=__dec_free;
self->d_stream.opaque=self;
ret = inflateInit2(&self->d_stream,self->windowBits);
if (ret!=Z_OK) { _dec_onDecErr_up(); _dec_openErr_rt(); }
return self;
}
static hpatch_decompressHandle _zlib_decompress_open(hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
_zlib_TDecompress* self=0;
unsigned char* _mem_buf=(unsigned char*)_dec_malloc(sizeof(_zlib_TDecompress)+kDecompressBufSize);
if (!_mem_buf) _dec_memErr_rt();
self=_zlib_decompress_open_at(decompressPlugin,codeStream,code_begin,code_end,1,
(_zlib_TDecompress*)_mem_buf,sizeof(_zlib_TDecompress)+kDecompressBufSize);
if (!self)
free(_mem_buf);
return self;
}
static hpatch_decompressHandle _zlib_decompress_open_deflate(hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
_zlib_TDecompress* self=0;
unsigned char* _mem_buf=(unsigned char*)_dec_malloc(sizeof(_zlib_TDecompress)+kDecompressBufSize);
if (!_mem_buf) _dec_memErr_rt();
self=_zlib_decompress_open_at(decompressPlugin,codeStream,code_begin,code_end,0,
(_zlib_TDecompress*)_mem_buf,sizeof(_zlib_TDecompress)+kDecompressBufSize);
if (!self)
free(_mem_buf);
return self;
}
static _zlib_TDecompress* _zlib_decompress_open_by(hpatch_TDecompress* decompressPlugin,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end,
int isSavedWindowBits,
unsigned char* _mem_buf,size_t _mem_buf_size){
#define __MAX_TS(a,b) ((a)>=(b)?(a):(b))
const hpatch_size_t kZlibAlign=__MAX_TS(__MAX_TS(sizeof(hpatch_StreamPos_t),sizeof(void*)),sizeof(uLongf));
#undef __MAX_TS
unsigned char* _mem_buf_end=_mem_buf+_mem_buf_size;
unsigned char* self_at=(unsigned char*)_hpatch_align_upper(_mem_buf,kZlibAlign);
if (self_at>=_mem_buf_end) return 0;
return _zlib_decompress_open_at(decompressPlugin,codeStream,code_begin,code_end,isSavedWindowBits,
(_zlib_TDecompress*)self_at,_mem_buf_end-self_at);
}
static hpatch_BOOL _zlib_decompress_close_by(struct hpatch_TDecompress* decompressPlugin,
_zlib_TDecompress* self){
hpatch_BOOL result=hpatch_TRUE;
if (!self) return result;
_dec_onDecErr_up();
if (self->d_stream.state!=0){
_dec_close_check(Z_OK==inflateEnd(&self->d_stream));
}
memset(self,0,sizeof(_zlib_TDecompress));
return result;
}
static hpatch_BOOL _zlib_decompress_close(struct hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
_zlib_TDecompress* self=(_zlib_TDecompress*)decompressHandle;
hpatch_BOOL result=_zlib_decompress_close_by(decompressPlugin,self);
if (self) free(self);
return result;
}
static hpatch_BOOL _zlib_reset_for_next_node(z_stream* d_stream){
//backup
Bytef* next_out_back=d_stream->next_out;
Bytef* next_in_back=d_stream->next_in;
unsigned int avail_out_back=d_stream->avail_out;
unsigned int avail_in_back=d_stream->avail_in;
//reset
if (Z_OK!=inflateReset(d_stream)) return hpatch_FALSE;
//restore
d_stream->next_out=next_out_back;
d_stream->next_in=next_in_back;
d_stream->avail_out=avail_out_back;
d_stream->avail_in=avail_in_back;
return hpatch_TRUE;
}
static hpatch_BOOL __zlib_do_inflate(hpatch_decompressHandle decompressHandle){
_zlib_TDecompress* self=(_zlib_TDecompress*)decompressHandle;
uInt avail_out_back,avail_in_back;
int ret;
hpatch_StreamPos_t codeLen=(self->code_end - self->code_begin);
if ((self->d_stream.avail_in==0)&&(codeLen>0)) {
size_t readLen=self->dec_buf_size;
if (readLen>codeLen) readLen=(size_t)codeLen;
self->d_stream.next_in=self->dec_buf;
if (!self->codeStream->read(self->codeStream,self->code_begin,self->dec_buf,
self->dec_buf+readLen)) return hpatch_FALSE;//error;
self->d_stream.avail_in=(uInt)readLen;
self->code_begin+=readLen;
codeLen-=readLen;
}
avail_out_back=self->d_stream.avail_out;
avail_in_back=self->d_stream.avail_in;
ret=inflate(&self->d_stream,Z_NO_FLUSH);
if (ret==Z_OK){
if ((self->d_stream.avail_in==avail_in_back)&&(self->d_stream.avail_out==avail_out_back))
_dec_onDecErr_rt();//error;
}else if (ret==Z_STREAM_END){
if (self->d_stream.avail_in+codeLen>0){ //next compress node!
if (!_zlib_reset_for_next_node(&self->d_stream))
_dec_onDecErr_rt();//error;
}else{//all end
if (self->d_stream.avail_out!=0)
_dec_onDecErr_rt();//error;
}
}else{
_dec_onDecErr_rt();//error;
}
return hpatch_TRUE;
}
static hpatch_BOOL _zlib_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
_zlib_TDecompress* self=(_zlib_TDecompress*)decompressHandle;
assert(out_part_data<=out_part_data_end);
self->d_stream.next_out = out_part_data;
self->d_stream.avail_out =(uInt)(out_part_data_end-out_part_data);
while (self->d_stream.avail_out>0) {
if (!__zlib_do_inflate(self))
return hpatch_FALSE;//error;
}
return hpatch_TRUE;
}
static hpatch_inline int _zlib_is_decompress_finish(const hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
_zlib_TDecompress* self=(_zlib_TDecompress*)decompressHandle;
unsigned char _empty=0;
while (self->code_begin!=self->code_end){ //for end tag code
self->d_stream.next_out = &_empty;
self->d_stream.avail_out=0;
if (!__zlib_do_inflate(self)){
self->d_stream.next_out=0;
return hpatch_FALSE;//error;
}
}
self->d_stream.next_out=0;
return (self->code_begin==self->code_end)
&(self->d_stream.avail_in==0)
&(self->d_stream.avail_out==0);
}
static hpatch_TDecompress zlibDecompressPlugin={_zlib_is_can_open,_zlib_decompress_open,
_zlib_decompress_close,_zlib_decompress_part};
static hpatch_TDecompress zlibDecompressPlugin_deflate={_zlib_is_can_open,_zlib_decompress_open_deflate,
_zlib_decompress_close,_zlib_decompress_part};
#endif//_CompressPlugin_zlib
#ifdef _CompressPlugin_ldef
#if (_IsNeedIncludeDefaultCompressHead)
# include "libdeflate.h" // https://github.com/sisong/libdeflate/tree/stream-mt based on https://github.com/ebiggers/libdeflate
# if (_CompressPlugin_ldef_is_use_zlib)
# include "zlib.h" // https://github.com/sisong/zlib/tree/bit_pos_padding based on https://github.com/madler/zlib
# endif
#endif
static const size_t _de_ldef_kDictSize = 1024*32;
static const size_t _de_ldef_kMaxBlockSize =1024*32*19;
// used _de_ldef_kMaxBlockSize*2 memory; optimized speed for
// libdefalte & zlib's deflate code ..., when theirs input deflate code compress block size<=_de_ldef_kMaxBlockSize/2;
// if (_de_ldef_kMaxBlockSize>=compress block size>_de_ldef_kMaxBlockSize/2) speed will little slower;
// if (compress block size>_de_ldef_kMaxBlockSize) && if (_CompressPlugin_ldef_is_use_zlib!=0),
// then swap to zlib decompressor & very slower (slower than zlib); && if (_CompressPlugin_ldef_is_use_zlib==0) will decompress fail.
typedef struct _ldef_TDecompress{
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
const struct hpatch_TStreamInput* codeStream;
unsigned char* data_buf;
size_t data_buf_size;
unsigned char* code_buf;
size_t code_buf_size;
struct libdeflate_decompressor* d;
hpatch_dec_error_t decError;
size_t data_cur;
size_t out_cur;
size_t code_cur;
#if (_CompressPlugin_ldef_is_use_zlib)
hpatch_BOOL is_swap_to_zlib;
z_stream d_stream;
#endif
} _ldef_TDecompress;
#if (_CompressPlugin_ldef_is_use_zlib)
static hpatch_inline hpatch_BOOL _ldef_is_swap_to_zlib(_ldef_TDecompress* self){
return self->is_swap_to_zlib;
}
static hpatch_BOOL _ldef_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end);
static hpatch_BOOL _ldef_swap_from_zlib(_ldef_TDecompress* self){
const size_t out_part_len=self->d_stream.avail_out;
self->is_swap_to_zlib=hpatch_FALSE;
libdeflate_deflate_decompress_block_reset(self->d);
{
unsigned long shift_v;
unsigned int shift_bit;
zlib_inflate_shift_value(&self->d_stream,&shift_v,&shift_bit);
if (shift_bit>>3) _dec_onDecErr_rt();
libdeflate_deflate_decompress_set_state(self->d,(shift_v<<3)|shift_bit);
}
assert(self->data_cur==_de_ldef_kDictSize);
self->code_cur=self->code_buf_size-self->d_stream.avail_in;
assert(self->d_stream.next_in==self->code_buf+self->code_cur);
{
uInt dict_size=0;
if (Z_OK!=inflateGetDictionary(&self->d_stream,0,&dict_size)) _dec_onDecErr_rt();
if (Z_OK!=inflateGetDictionary(&self->d_stream,self->data_buf+self->data_cur-dict_size,0)) _dec_onDecErr_rt();
}
if (out_part_len>0)
return _ldef_decompress_part(self,self->d_stream.next_out,self->d_stream.next_out+out_part_len);
else
return hpatch_TRUE;
}
static hpatch_BOOL _ldef_decompress_part_by_zlib(_ldef_TDecompress* self,
unsigned char* out_part_data,size_t out_part_len){
self->d_stream.next_out=out_part_data;
self->d_stream.avail_out=(uInt)out_part_len;
while (self->d_stream.avail_out){
uInt avail_out_back,avail_in_back;
int ret;
hpatch_StreamPos_t codeLen=(self->code_end-self->code_begin);
if ((self->d_stream.avail_in==0)&&(codeLen>0)) {
size_t readLen=self->code_buf_size;
if (readLen>codeLen) readLen=(size_t)codeLen;
self->d_stream.next_in=self->code_buf+self->code_buf_size-readLen;
if (!self->codeStream->read(self->codeStream,self->code_begin,self->d_stream.next_in,
self->d_stream.next_in+readLen)) return hpatch_FALSE;//error;
self->d_stream.avail_in=(uInt)readLen;
self->code_begin+=readLen;
codeLen-=readLen;
}
avail_out_back=self->d_stream.avail_out;
avail_in_back=self->d_stream.avail_in;
ret=inflate(&self->d_stream,Z_BLOCK);
if (ret==Z_OK){
if ((self->d_stream.avail_in==avail_in_back)&&(self->d_stream.avail_out==avail_out_back))
_dec_onDecErr_rt();//error;
if (zlib_inflate_is_block_end(&self->d_stream)&&(!zlib_inflate_is_last_block_end(&self->d_stream)))
return _ldef_swap_from_zlib(self);
}else if (ret==Z_STREAM_END){
if (self->d_stream.avail_in+codeLen>0){ //next compress node!
zlib_inflate_set_shift_value(&self->d_stream,0,0);
return _ldef_swap_from_zlib(self);
}else{//all end
if (self->d_stream.avail_out!=0)
_dec_onDecErr_rt();//error;
}
}else{
_dec_onDecErr_rt();//error;
}
}
return hpatch_TRUE;
}
static hpatch_BOOL _ldef_swap_to_zlib(_ldef_TDecompress* self,uint16_t dec_state,
unsigned char* out_part_data,size_t out_part_len){
self->is_swap_to_zlib=hpatch_TRUE;
if (self->d_stream.state==0){
if (Z_OK!=inflateInit2(&self->d_stream,-15)){
if (!self->decError) self->decError=hpatch_dec_open_error;
return hpatch_FALSE;
}
}else{
if (Z_OK!=inflateReset(&self->d_stream)) _dec_onDecErr_rt();
}
zlib_inflate_set_shift_value(&self->d_stream,(uLong)(dec_state>>3),(uInt)(dec_state&((1<<3)-1)));
if (Z_OK!=inflateSetDictionary(&self->d_stream,self->data_buf+self->data_cur-_de_ldef_kDictSize,(uInt)_de_ldef_kDictSize)) _dec_onDecErr_rt();
self->d_stream.next_in=self->code_buf+self->code_cur;
self->d_stream.avail_in=(uInt)(self->code_buf_size-self->code_cur);
return _ldef_decompress_part_by_zlib(self,out_part_data,out_part_len);
}
#endif //_CompressPlugin_ldef_is_use_zlib
static hpatch_BOOL _ldef_is_can_open(const char* compressType){
return (0==strcmp(compressType,"zlib"))||(0==strcmp(compressType,"pzlib"));
}
static _ldef_TDecompress* _ldef_decompress_open_at(hpatch_TDecompress* decompressPlugin,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,hpatch_StreamPos_t code_end,
int isSavedWindowBits,_ldef_TDecompress* self,
size_t data_buf_size,size_t code_buf_size){
if (isSavedWindowBits){//load kWindowBits
signed char kWindowBits=0;
if (code_end-code_begin<1) _dec_openErr_rt();
if (!codeStream->read(codeStream,code_begin,(unsigned char*)&kWindowBits,
(unsigned char*)&kWindowBits+1)) return 0;
++code_begin;
if (!((-15<=kWindowBits)&&(kWindowBits<0)))
_dec_openErr_rt(); //now, unsupported these window bits
}
memset(self,0,sizeof(_ldef_TDecompress));
self->d=libdeflate_alloc_decompressor();
if (!self->d) _dec_memErr_rt();
self->data_buf=((unsigned char*)self)+sizeof(_ldef_TDecompress);
self->data_buf_size=data_buf_size;
self->code_buf=self->data_buf+data_buf_size;
self->code_buf_size=code_buf_size;
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
self->data_cur=_de_ldef_kDictSize; //empty
self->out_cur=_de_ldef_kDictSize;
self->code_cur=code_buf_size; //empty
return self;
}
static hpatch_decompressHandle _ldef_decompress_open(hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
_ldef_TDecompress* self=0;
const hpatch_StreamPos_t in_size=code_end-code_begin;
const size_t data_buf_size=_de_ldef_kDictSize+((_de_ldef_kMaxBlockSize<dataSize)?_de_ldef_kMaxBlockSize:(size_t)dataSize);
const size_t code_buf_size=(_de_ldef_kMaxBlockSize<in_size)?_de_ldef_kMaxBlockSize:(size_t)in_size;
size_t _mem_size=sizeof(_ldef_TDecompress)+data_buf_size+code_buf_size;
unsigned char* _mem_buf=(unsigned char*)_dec_malloc(_mem_size);
if (!_mem_buf) _dec_memErr_rt();
self=_ldef_decompress_open_at(decompressPlugin,codeStream,code_begin,code_end,1,
(_ldef_TDecompress*)_mem_buf,data_buf_size,code_buf_size);
if (!self)
free(_mem_buf);
return self;
}
static hpatch_BOOL _ldef_decompress_close_by(struct hpatch_TDecompress* decompressPlugin,
_ldef_TDecompress* self){
hpatch_BOOL result=hpatch_TRUE;
if (!self) return result;
_dec_onDecErr_up();
#if (_CompressPlugin_ldef_is_use_zlib)
if (self->d_stream.state!=0){
_dec_close_check(Z_OK==inflateEnd(&self->d_stream));
}
#endif
if (self->d!=0)
libdeflate_free_decompressor(self->d);
memset(self,0,sizeof(_ldef_TDecompress));
return result;
}
static hpatch_BOOL _ldef_decompress_close(struct hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
_ldef_TDecompress* self=(_ldef_TDecompress*)decompressHandle;
hpatch_BOOL result=_ldef_decompress_close_by(decompressPlugin,self);
if (self) free(self);
return result;
}
static hpatch_BOOL _ldef_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
_ldef_TDecompress* self=(_ldef_TDecompress*)decompressHandle;
size_t out_part_len=out_part_data_end-out_part_data;
#if (_CompressPlugin_ldef_is_use_zlib)
if (_ldef_is_swap_to_zlib(self)&&out_part_len)
return _ldef_decompress_part_by_zlib(self,out_part_data,out_part_len);
#endif
const size_t kDictSize=_de_ldef_kDictSize;
// [ ( dict ) | dataBuf ] [ codeBuf ]
// ^ ^ ^ ^ ^ ^ ^
// data_buf out_cur data_cur data_buf_size code_buf code_cur code_buf_size
while (out_part_len) {
{//write data out
size_t out_len=self->data_cur-self->out_cur;
if (out_len){ //have data
out_len=(out_len<out_part_len)?out_len:out_part_len;
memcpy(out_part_data,self->data_buf+self->out_cur,out_len);
self->out_cur+=out_len;
out_part_data+=out_len;
out_part_len-=out_len;
continue;
}
}
size_t kLimitDataSize=_de_ldef_kMaxBlockSize/2+kDictSize;
size_t kLimitCodeSize=self->code_buf_size/2;
__datas_prepare:
{//read code in
if (self->code_cur>kLimitCodeSize){
const hpatch_StreamPos_t _codeSize=self->code_end-self->code_begin;
size_t read_len=(self->code_cur<_codeSize)?self->code_cur:(size_t)_codeSize;
if (read_len){
size_t code_len=self->code_buf_size-self->code_cur;
unsigned char* pcode=self->code_buf+self->code_cur;
unsigned char* pdst=pcode-read_len;
memmove(pdst,pcode,code_len);
pdst+=code_len;
if (!self->codeStream->read(self->codeStream,self->code_begin,pdst,pdst+read_len))
return 0; //read error
self->code_begin+=read_len;
self->code_cur-=read_len;
}
}
}
{//move dict
if (self->data_cur>kLimitDataSize){
size_t move_offset=self->data_cur-kDictSize;
if (move_offset){
memmove(self->data_buf,self->data_buf+move_offset,kDictSize);
self->data_cur=kDictSize;
self->out_cur=kDictSize;
}
}
}
{// decompress
int is_final_block_ret;
size_t actual_in_nbytes_ret;
size_t actual_out_nbytes_ret;
const uint16_t dec_state=libdeflate_deflate_decompress_get_state(self->d);
enum libdeflate_result ret=libdeflate_deflate_decompress_block(self->d,
self->code_buf+self->code_cur,self->code_buf_size-self->code_cur,
self->data_buf,self->data_cur,self->data_buf_size-self->data_cur,
&actual_in_nbytes_ret,&actual_out_nbytes_ret,
LIBDEFLATE_STOP_BY_ANY_BLOCK,&is_final_block_ret);
if (ret!=LIBDEFLATE_SUCCESS){
if ((self->code_begin==self->code_end)&&(ret!=LIBDEFLATE_INSUFFICIENT_SPACE))
_dec_onDecErr_rt();
if ((self->data_cur>kDictSize)||((self->code_cur>0)&&(self->code_begin<self->code_end))){
kLimitDataSize=kDictSize;
kLimitCodeSize=0;
libdeflate_deflate_decompress_set_state(self->d,dec_state);
goto __datas_prepare; //retry by libdefalte
}
#if (_CompressPlugin_ldef_is_use_zlib)
return _ldef_swap_to_zlib(self,dec_state,out_part_data,out_part_len); //retry by zlib
#else
_dec_onDecErr_rt();
#endif
}
self->code_cur+=actual_in_nbytes_ret;
self->data_cur+=actual_out_nbytes_ret;
if (is_final_block_ret)
libdeflate_deflate_decompress_block_reset(self->d);
}
}
return hpatch_TRUE;
}
static hpatch_TDecompress ldefDecompressPlugin={_ldef_is_can_open,_ldef_decompress_open,
_ldef_decompress_close,_ldef_decompress_part};
#endif//_CompressPlugin_ldef
#ifdef _CompressPlugin_bz2
#if (_IsNeedIncludeDefaultCompressHead)
# include "bzlib.h" // http://www.bzip.org/ https://github.com/sisong/bzip2
#endif
typedef struct _bz2_TDecompress{
const struct hpatch_TStreamInput* codeStream;
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
bz_stream d_stream;
hpatch_dec_error_t decError;
unsigned char dec_buf[kDecompressBufSize];
} _bz2_TDecompress;
static hpatch_BOOL _bz2_is_can_open(const char* compressType){
return (0==strcmp(compressType,"bz2"))||(0==strcmp(compressType,"bzip2"))
||(0==strcmp(compressType,"pbz2"))||(0==strcmp(compressType,"pbzip2"));
}
static hpatch_decompressHandle _bz2_open(struct hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
int ret;
_bz2_TDecompress* self=(_bz2_TDecompress*)_dec_malloc(sizeof(_bz2_TDecompress));
if (!self) _dec_memErr_rt();
memset(self,0,sizeof(_bz2_TDecompress)-kDecompressBufSize);
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
ret=BZ2_bzDecompressInit(&self->d_stream,0,0);
if (ret!=BZ_OK){ free(self); _dec_openErr_rt(); }
return self;
}
static hpatch_BOOL _bz2_close(struct hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
hpatch_BOOL result=hpatch_TRUE;
_bz2_TDecompress* self=(_bz2_TDecompress*)decompressHandle;
if (!self) return result;
_dec_onDecErr_up();
_dec_close_check(BZ_OK==BZ2_bzDecompressEnd(&self->d_stream));
free(self);
return result;
}
static hpatch_BOOL _bz2_reset_for_next_node(_bz2_TDecompress* self){
//backup
char* next_out_back=self->d_stream.next_out;
char* next_in_back=self->d_stream.next_in;
unsigned int avail_out_back=self->d_stream.avail_out;
unsigned int avail_in_back=self->d_stream.avail_in;
//reset
if (BZ_OK!=BZ2_bzDecompressEnd(&self->d_stream)) _dec_onDecErr_rt();
if (BZ_OK!=BZ2_bzDecompressInit(&self->d_stream,0,0)) _dec_onDecErr_rt();
//restore
self->d_stream.next_out=next_out_back;
self->d_stream.next_in=next_in_back;
self->d_stream.avail_out=avail_out_back;
self->d_stream.avail_in=avail_in_back;
return hpatch_TRUE;
}
static hpatch_BOOL _bz2_decompress_part_(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end,
hpatch_BOOL isMustOutData){
_bz2_TDecompress* self=(_bz2_TDecompress*)decompressHandle;
assert(out_part_data<=out_part_data_end);
self->d_stream.next_out =(char*)out_part_data;
self->d_stream.avail_out =(unsigned int)(out_part_data_end-out_part_data);
while (self->d_stream.avail_out>0) {
unsigned int avail_out_back,avail_in_back;
int ret;
hpatch_StreamPos_t codeLen=(self->code_end - self->code_begin);
if ((self->d_stream.avail_in==0)&&(codeLen>0)) {
size_t readLen=kDecompressBufSize;
self->d_stream.next_in=(char*)self->dec_buf;
if (readLen>codeLen) readLen=(size_t)codeLen;
if (!self->codeStream->read(self->codeStream,self->code_begin,self->dec_buf,
self->dec_buf+readLen)) return hpatch_FALSE;//error;
self->d_stream.avail_in=(unsigned int)readLen;
self->code_begin+=readLen;
codeLen-=readLen;
}
avail_out_back=self->d_stream.avail_out;
avail_in_back=self->d_stream.avail_in;
ret=BZ2_bzDecompress(&self->d_stream);
if (ret==BZ_OK){
if ((self->d_stream.avail_in==avail_in_back)&&(self->d_stream.avail_out==avail_out_back))
_dec_onDecErr_rt();//error;
}else if (ret==BZ_STREAM_END){
if (self->d_stream.avail_in+codeLen>0){ //next compress node!
if (!_bz2_reset_for_next_node(self))
return hpatch_FALSE;//error;
}else{//all end
if (self->d_stream.avail_out!=0){
if (isMustOutData){ //fill out 0
memset(self->d_stream.next_out,0,self->d_stream.avail_out);
self->d_stream.next_out+=self->d_stream.avail_out;
self->d_stream.avail_out=0;
}else{
_dec_onDecErr_rt();//error;
}
}
}
}else{
_dec_onDecErr_rt();//error;
}
}
return hpatch_TRUE;
}
static hpatch_BOOL _bz2_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
return _bz2_decompress_part_(decompressHandle,out_part_data,out_part_data_end,hpatch_FALSE);
}
static hpatch_BOOL _bz2_decompress_part_unsz(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
return _bz2_decompress_part_(decompressHandle,out_part_data,out_part_data_end,hpatch_TRUE);
}
static hpatch_TDecompress bz2DecompressPlugin={_bz2_is_can_open,_bz2_open,
_bz2_close,_bz2_decompress_part};
//unkown uncompress data size
static hpatch_TDecompress _bz2DecompressPlugin_unsz={_bz2_is_can_open,_bz2_open,
_bz2_close,_bz2_decompress_part_unsz};
#endif//_CompressPlugin_bz2
#if (defined _CompressPlugin_lzma) || (defined _CompressPlugin_lzma2)
#if (_IsNeedIncludeDefaultCompressHead)
# include "LzmaDec.h" // "lzma/C/LzmaDec.h" https://github.com/sisong/lzma
# ifdef _CompressPlugin_lzma2
# include "Lzma2Dec.h"
# endif
#endif
#endif
#ifdef _CompressPlugin_lzma
typedef struct _lzma_TDecompress{
ISzAlloc memAllocBase;
const struct hpatch_TStreamInput* codeStream;
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
CLzmaDec decEnv;
SizeT decCopyPos;
SizeT decReadPos;
hpatch_dec_error_t decError;
unsigned char dec_buf[kDecompressBufSize];
} _lzma_TDecompress;
static void * __lzma1_dec_Alloc(ISzAllocPtr p, size_t size)
__dec_Alloc_fun(_lzma_TDecompress,p,size)
static hpatch_BOOL _lzma_is_can_open(const char* compressType){
return (0==strcmp(compressType,"lzma"));
}
static hpatch_decompressHandle _lzma_open(hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
_lzma_TDecompress* self=0;
SRes ret;
unsigned char propsSize=0;
unsigned char props[256];
//load propsSize
if (code_end-code_begin<1) _dec_openErr_rt();
if (!codeStream->read(codeStream,code_begin,&propsSize,&propsSize+1)) return 0;
++code_begin;
if (propsSize>(code_end-code_begin)) _dec_openErr_rt();
//load props
if (!codeStream->read(codeStream,code_begin,props,props+propsSize)) return 0;
code_begin+=propsSize;
self=(_lzma_TDecompress*)_dec_malloc(sizeof(_lzma_TDecompress));
if (!self) _dec_memErr_rt();
memset(self,0,sizeof(_lzma_TDecompress)-kDecompressBufSize);
self->memAllocBase.Alloc=__lzma1_dec_Alloc;
*((void**)&self->memAllocBase.Free)=(void*)__dec_free;
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
self->decCopyPos=0;
self->decReadPos=kDecompressBufSize;
LzmaDec_Construct(&self->decEnv);
ret=LzmaDec_Allocate(&self->decEnv,props,propsSize,&self->memAllocBase);
if (ret!=SZ_OK){ _dec_onDecErr_up(); free(self); _dec_openErr_rt(); }
LzmaDec_Init(&self->decEnv);
return self;
}
static hpatch_BOOL _lzma_close(struct hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
_lzma_TDecompress* self=(_lzma_TDecompress*)decompressHandle;
if (!self) return hpatch_TRUE;
LzmaDec_Free(&self->decEnv,&self->memAllocBase);
_dec_onDecErr_up();
free(self);
return hpatch_TRUE;
}
static hpatch_BOOL _lzma_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
_lzma_TDecompress* self=(_lzma_TDecompress*)decompressHandle;
unsigned char* out_cur=out_part_data;
assert(out_part_data<=out_part_data_end);
while (out_cur<out_part_data_end){
size_t copyLen=(self->decEnv.dicPos-self->decCopyPos);
if (copyLen>0){
if (copyLen>(size_t)(out_part_data_end-out_cur))
copyLen=(out_part_data_end-out_cur);
memcpy(out_cur,self->decEnv.dic+self->decCopyPos,copyLen);
out_cur+=copyLen;
self->decCopyPos+=copyLen;
if ((self->decEnv.dicPos==self->decEnv.dicBufSize)
&&(self->decEnv.dicPos==self->decCopyPos)){
self->decEnv.dicPos=0;
self->decCopyPos=0;
}
}else{
ELzmaStatus status;
SizeT inSize,dicPos_back;
SRes res;
hpatch_StreamPos_t codeLen=(self->code_end - self->code_begin);
if ((self->decReadPos==kDecompressBufSize)&&(codeLen>0)) {
size_t readLen=kDecompressBufSize;
if (readLen>codeLen) readLen=(size_t)codeLen;
self->decReadPos=kDecompressBufSize-readLen;
if (!self->codeStream->read(self->codeStream,self->code_begin,self->dec_buf+self->decReadPos,
self->dec_buf+self->decReadPos+readLen)) return hpatch_FALSE;//error;
self->code_begin+=readLen;
}
inSize=kDecompressBufSize-self->decReadPos;
dicPos_back=self->decEnv.dicPos;
res=LzmaDec_DecodeToDic(&self->decEnv,self->decEnv.dicBufSize,
self->dec_buf+self->decReadPos,&inSize,LZMA_FINISH_ANY,&status);
if(res==SZ_OK){
if ((inSize==0)&&(self->decEnv.dicPos==dicPos_back))
_dec_onDecErr_rt();//error;
}else{
_dec_onDecErr_rt();//error;
}
self->decReadPos+=inSize;
}
}
return hpatch_TRUE;
}
static hpatch_TDecompress lzmaDecompressPlugin={_lzma_is_can_open,_lzma_open,
_lzma_close,_lzma_decompress_part};
#endif//_CompressPlugin_lzma
#ifdef _CompressPlugin_lzma2
typedef struct _lzma2_TDecompress{
ISzAlloc memAllocBase;
const struct hpatch_TStreamInput* codeStream;
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
CLzma2Dec decEnv;
SizeT decCopyPos;
SizeT decReadPos;
hpatch_dec_error_t decError;
unsigned char dec_buf[kDecompressBufSize];
} _lzma2_TDecompress;
static void * __lzma2_dec_Alloc(ISzAllocPtr p, size_t size)
__dec_Alloc_fun(_lzma2_TDecompress,p,size)
static hpatch_BOOL _lzma2_is_can_open(const char* compressType){
return (0==strcmp(compressType,"lzma2"));
}
static hpatch_decompressHandle _lzma2_open(hpatch_TDecompress* decompressPlugin,
hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,
hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end){
_lzma2_TDecompress* self=0;
SRes ret;
unsigned char propsSize=0;
//load propsSize
if (code_end-code_begin<1) _dec_openErr_rt();
if (!codeStream->read(codeStream,code_begin,&propsSize,&propsSize+1)) return 0;
++code_begin;
self=(_lzma2_TDecompress*)_dec_malloc(sizeof(_lzma2_TDecompress));
if (!self) _dec_memErr_rt();
memset(self,0,sizeof(_lzma2_TDecompress)-kDecompressBufSize);
self->memAllocBase.Alloc=__lzma2_dec_Alloc;
*((void**)&self->memAllocBase.Free)=(void*)__dec_free;
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
self->decCopyPos=0;
self->decReadPos=kDecompressBufSize;
Lzma2Dec_Construct(&self->decEnv);
ret=Lzma2Dec_Allocate(&self->decEnv,propsSize,&self->memAllocBase);
if (ret!=SZ_OK){ _dec_onDecErr_up(); free(self); _dec_openErr_rt(); }
Lzma2Dec_Init(&self->decEnv);
return self;
}
static hpatch_BOOL _lzma2_close(struct hpatch_TDecompress* decompressPlugin,
hpatch_decompressHandle decompressHandle){
_lzma2_TDecompress* self=(_lzma2_TDecompress*)decompressHandle;
if (!self) return hpatch_TRUE;
Lzma2Dec_Free(&self->decEnv,&self->memAllocBase);
_dec_onDecErr_up();
free(self);
return hpatch_TRUE;
}
static hpatch_BOOL _lzma2_decompress_part(hpatch_decompressHandle decompressHandle,
unsigned char* out_part_data,unsigned char* out_part_data_end){
_lzma2_TDecompress* self=(_lzma2_TDecompress*)decompressHandle;
unsigned char* out_cur=out_part_data;
assert(out_part_data<=out_part_data_end);
while (out_cur<out_part_data_end){
size_t copyLen=(self->decEnv.decoder.dicPos-self->decCopyPos);
if (copyLen>0){
if (copyLen>(size_t)(out_part_data_end-out_cur))
copyLen=(out_part_data_end-out_cur);
memcpy(out_cur,self->decEnv.decoder.dic+self->decCopyPos,copyLen);
out_cur+=copyLen;
self->decCopyPos+=copyLen;
if ((self->decEnv.decoder.dicPos==self->decEnv.decoder.dicBufSize)
&&(self->decEnv.decoder.dicPos==self->decCopyPos)){
self->decEnv.decoder.dicPos=0;
self->decCopyPos=0;
}
}else{
ELzmaStatus status;
SizeT inSize,dicPos_back;
SRes res;
hpatch_StreamPos_t codeLen=(self->code_end - self->code_begin);
if ((self->decReadPos==kDecompressBufSize)&&(codeLen>0)) {
size_t readLen=kDecompressBufSize;
if (readLen>codeLen) readLen=(size_t)codeLen;
self->decReadPos=kDecompressBufSize-readLen;
if (!self->codeStream->read(self->codeStream,self->code_begin,self->dec_buf+self->decReadPos,
self->dec_buf+self->decReadPos+readLen)) return hpatch_FALSE;//error;
self->code_begin+=readLen;
}
inSize=kDecompressBufSize-self->decReadPos;
dicPos_back=self->decEnv.decoder.dicPos;
res=Lzma2Dec_DecodeToDic(&self->decEnv,self->decEnv.decoder.dicBufSize,
self->dec_buf+self->decReadPos,&inSize,LZMA_FINISH_ANY,&status);
if(res==SZ_OK){
if ((inSize==0)&&(self->decEnv.decoder.dicPos==dicPos_back))
_dec_onDecErr_rt();//error;
}else{
_dec_onDecErr_rt();//error;
}
self->decReadPos+=inSize;
}
}
return hpatch_TRUE;
}
static hpatch_TDecompress lzma2DecompressPlugin={_lzma2_is_can_open,_lzma2_open,
_lzma2_close,_lzma2_decompress_part};
#endif//_CompressPlugin_lzma2
#ifdef _CompressPlugin_7zXZ
#if (_IsNeedIncludeDefaultCompressHead)
# include "Xz.h" // "lzma/C/Xz.h" https://github.com/sisong/lzma
# include "7zCrc.h" // CrcGenerateTable()
#endif
#ifndef _init_CompressPlugin_7zXZ_DEF
# define _init_CompressPlugin_7zXZ_DEF
static int _init_CompressPlugin_7zXZ(){
static hpatch_BOOL _isInit=hpatch_FALSE;
if (!_isInit){
CrcGenerateTable();
_isInit=hpatch_TRUE;
}
return 0;
}
#endif
typedef struct _7zXZ_TDecompress{
ISzAlloc memAllocBase;
const struct hpatch_TStreamInput* codeStream;
hpatch_StreamPos_t code_begin;
hpatch_StreamPos_t code_end;
hpatch_TDecompress* decompressPlugin;
hpatch_BOOL isResetState;
CXzUnpacker decEnv;
SizeT decCopyPos;
SizeT decReadPos;
hpatch_dec_error_t decError;
unsigned char dec_buf[kDecompressBufSize];
} _7zXZ_TDecompress;
static void * __7zXZ_dec_Alloc(ISzAllocPtr p, size_t size)
__dec_Alloc_fun(_7zXZ_TDecompress,p,size)
static hpatch_BOOL _7zXZ_is_can_open(const char* compressType){
return (0==strcmp(compressType,"7zXZ"));
}
static void _7zXZ_open_at(_7zXZ_TDecompress* self, hpatch_TDecompress* decompressPlugin,hpatch_StreamPos_t dataSize,
const hpatch_TStreamInput* codeStream,hpatch_StreamPos_t code_begin,
hpatch_StreamPos_t code_end,hpatch_BOOL isResetState,hpatch_BOOL isParseHead){
memset(self,0,sizeof(_7zXZ_TDecompress)-kDecompressBufSize);
self->memAllocBase.Alloc=__7zXZ_dec_Alloc;
*((void**)&self->memAllocBase.Free)=(void*)__dec_free;
self->codeStream=codeStream;
self->code_begin=code_begin;
self->code_end=code_end;
self->decompressPlugin=decompressPlugin;
self->isResetState=isResetState;
self->decCopyPos=0;
self->decReadPos=kDecompressBufSize;
XzUnpacker_Construct(&self->decEnv,&self->memAllocBase);
XzUnpacker_Init(&self->decEnv);
if (!isParseHead)
self->decEnv.state=XZ_STATE_BLOCK_HEADER;
}