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/*
* Copyright (C) 2015-2015 Gregory hainaut
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* 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 General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSLzma.h"
GSDumpFile::GSDumpFile(char* filename, const char* repack_filename) {
m_fp = fopen(filename, "rb");
if (m_fp == nullptr) {
fprintf(stderr, "failed to open %s\n", filename);
throw "BAD"; // Just exit the program
}
m_repack_fp = nullptr;
if (repack_filename) {
m_repack_fp = fopen(repack_filename, "wb");
if (m_repack_fp == nullptr)
fprintf(stderr, "failed to open %s for repack\n", repack_filename);
}
}
void GSDumpFile::Repack(void* ptr, size_t size) {
if (m_repack_fp == nullptr)
return;
size_t ret = fwrite(ptr, 1, size, m_repack_fp);
if (ret != size)
fprintf(stderr, "Failed to repack\n");
}
GSDumpFile::~GSDumpFile() {
if (m_fp)
fclose(m_fp);
if (m_repack_fp)
fclose(m_repack_fp);
}
/******************************************************************/
GSDumpLzma::GSDumpLzma(char* filename, const char* repack_filename) : GSDumpFile(filename, repack_filename) {
memset(&m_strm, 0, sizeof(lzma_stream));
lzma_ret ret = lzma_stream_decoder(&m_strm, UINT32_MAX, 0);
if (ret != LZMA_OK) {
fprintf(stderr, "Error initializing the decoder! (error code %u)\n", ret);
throw "BAD"; // Just exit the program
}
m_buff_size = 1024*1024;
m_area = (uint8_t*)_aligned_malloc(m_buff_size, 32);
m_inbuf = (uint8_t*)_aligned_malloc(BUFSIZ, 32);
m_avail = 0;
m_start = 0;
m_strm.avail_in = 0;
m_strm.next_in = m_inbuf;
m_strm.avail_out = m_buff_size;
m_strm.next_out = m_area;
}
void GSDumpLzma::Decompress() {
lzma_action action = LZMA_RUN;
m_strm.next_out = m_area;
m_strm.avail_out = m_buff_size;
// Nothing left in the input buffer. Read data from the file
if (m_strm.avail_in == 0 && !feof(m_fp)) {
m_strm.next_in = m_inbuf;
m_strm.avail_in = fread(m_inbuf, 1, BUFSIZ, m_fp);
if (ferror(m_fp)) {
fprintf(stderr, "Read error: %s\n", strerror(errno));
throw "BAD"; // Just exit the program
}
}
lzma_ret ret = lzma_code(&m_strm, action);
if (ret != LZMA_OK) {
if (ret == LZMA_STREAM_END)
fprintf(stderr, "LZMA decoder finished without error\n\n");
else {
fprintf(stderr, "Decoder error: (error code %u)\n", ret);
throw "BAD"; // Just exit the program
}
}
m_start = 0;
m_avail = m_buff_size - m_strm.avail_out;
}
bool GSDumpLzma::IsEof() {
return feof(m_fp) && m_avail == 0 && m_strm.avail_in == 0;
}
bool GSDumpLzma::Read(void* ptr, size_t size) {
size_t off = 0;
uint8_t* dst = (uint8_t*)ptr;
size_t full_size = size;
while (size && !IsEof()) {
if (m_avail == 0) {
Decompress();
}
size_t l = std::min(size, m_avail);
memcpy(dst + off, m_area+m_start, l);
m_avail -= l;
size -= l;
m_start += l;
off += l;
}
if (size == 0) {
Repack(ptr, full_size);
return true;
}
return false;
}
GSDumpLzma::~GSDumpLzma() {
lzma_end(&m_strm);
if (m_inbuf)
_aligned_free(m_inbuf);
if (m_area)
_aligned_free(m_area);
}
/******************************************************************/
GSDumpRaw::GSDumpRaw(char* filename, const char* repack_filename) : GSDumpFile(filename, repack_filename) {
m_buff_size = 0;
m_area = NULL;
m_inbuf = NULL;
m_avail = 0;
m_start = 0;
}
bool GSDumpRaw::IsEof() {
return !!feof(m_fp);
}
bool GSDumpRaw::Read(void* ptr, size_t size) {
size_t ret = fread(ptr, 1, size, m_fp);
if (ret != size && ferror(m_fp)) {
fprintf(stderr, "GSDumpRaw:: Read error (%zu/%zu)\n", ret, size);
throw "BAD"; // Just exit the program
}
if (ret == size) {
Repack(ptr, size);
return true;
}
return false;
}
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