mirror of
https://github.com/rwengine/openrw.git
synced 2024-09-20 01:11:46 +02:00
90 lines
2.3 KiB
C++
90 lines
2.3 KiB
C++
#include <renderwure/BinaryStream.hpp>
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#include <cstring>
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#include <iostream>
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#include <fstream>
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namespace RW
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{
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std::unique_ptr<BinaryStream> BinaryStream::parse(std::string filename)
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{
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std::ifstream dfile(filename);
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if ( ! dfile.is_open()) {
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std::cerr << "Error opening file " << filename << std::endl;
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return nullptr;
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}
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dfile.seekg(0, std::ios_base::end);
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size_t length = dfile.tellg();
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dfile.seekg(0);
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char *data = new char[length];
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dfile.read(data, length);
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// std::cout << "File is " << length << " bytes" << std::endl << std::endl;
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auto BS = std::unique_ptr<BinaryStream>(new BinaryStream);
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// Set file's ACTUAL length
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auto header = reinterpret_cast<nativeSectionHeader_t *>(data);
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length = header->size + sizeof(nativeSectionHeader_t);
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sectionHeader_t *prevHeader = nullptr;
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size_t offset = 0;
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while (offset < length) {
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nativeSectionHeader_t *sectionHeader = reinterpret_cast<nativeSectionHeader_t *>(data + offset);
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sectionHeader_t *sec = new sectionHeader_t;
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sec->ID = sectionHeader->ID;
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sec->size = sectionHeader->size;
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sec->version = sectionHeader->version;
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if (prevHeader == nullptr)
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BS->rootHeader = sec;
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else
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prevHeader->next = sec;
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if (sectionHeader->ID == 0) {
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std::cout << "Section ID is ZERO! Abort!" << std::endl;
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break;
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}
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std::cout << "Section " << std::hex << sectionHeader->ID
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<< " (" << sectionIdString(sectionHeader->ID) << ")"
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<< " - " << std::dec << sectionHeader->size << " bytes" << std::endl;
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/*
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std::cout << "Offset " << std::hex << offset << std::endl;
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*/
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size_t bytesOfData = 0;
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switch (sectionHeader->ID) {
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case STRUCT:
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bytesOfData = sectionHeader->size;
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sec->data = new uint8_t[bytesOfData];
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memcpy(sec->data, data + offset + sizeof(nativeSectionHeader_t), bytesOfData);
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break;
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}
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// std::cout << "It has " << std::dec << bytesOfData << " bytes of data!" << std::endl;
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offset += sizeof(nativeSectionHeader_t) + bytesOfData;
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// std::cout << std::endl;
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prevHeader = sec;
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}
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delete[] data;
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return BS;
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}
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std::string BinaryStream::sectionIdString(uint32_t id)
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{
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switch (id) {
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case STRUCT: return "STRUCT";
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case EXTENSION: return "EXTENSION";
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case TEXTURE_NATIVE: return "TEXTURE_NATIVE";
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case TEXTURE_DICTIONARY: return "TEXTURE_DICTIONARY";
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default: return "UNKNOWN";
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}
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}
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}
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