mirror of
https://github.com/DarkflameUniverse/DarkflameServer.git
synced 2024-09-19 09:01:31 +00:00
ef6f2f133e
* cast and code cleanup * cast cleanup * bug fixes and improvements * no getBoolField method exists * fixes * unbroke sg cannon scoring * removing comments * Remove the c-style cast warning I added from CMakeLists now that they're gone (it triggers on 3rd party dependencies and slows down compilation) * (Hopefully) fix MacOS compilation error * partially-implemented feedback * more updates to account for feedback * change bool default --------- Co-authored-by: jadebenn <jonahebenn@yahoo.com>
120 lines
2.9 KiB
C++
120 lines
2.9 KiB
C++
#include "Pack.h"
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#include "BinaryIO.h"
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#include "ZCompression.h"
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Pack::Pack(const std::filesystem::path& filePath) {
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m_FilePath = filePath;
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if (!std::filesystem::exists(filePath)) {
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return;
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}
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m_FileStream = std::ifstream(filePath, std::ios::in | std::ios::binary);
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m_FileStream.read(m_Version, 7);
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m_FileStream.seekg(-8, std::ios::end); // move file pointer to 8 bytes before the end (location of the address of the record count)
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uint32_t recordCountPos = 0;
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BinaryIO::BinaryRead<uint32_t>(m_FileStream, recordCountPos);
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m_FileStream.seekg(recordCountPos, std::ios::beg);
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BinaryIO::BinaryRead<uint32_t>(m_FileStream, m_RecordCount);
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for (int i = 0; i < m_RecordCount; i++) {
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PackRecord record;
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BinaryIO::BinaryRead<PackRecord>(m_FileStream, record);
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m_Records.push_back(record);
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}
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m_FileStream.close();
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}
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bool Pack::HasFile(uint32_t crc) {
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for (const auto& record : m_Records) {
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if (record.m_Crc == crc) {
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return true;
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}
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}
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return false;
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}
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bool Pack::ReadFileFromPack(uint32_t crc, char** data, uint32_t* len) {
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// Time for some wacky C file reading for speed reasons
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PackRecord pkRecord{};
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for (const auto& record : m_Records) {
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if (record.m_Crc == crc) {
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pkRecord = record;
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break;
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}
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}
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if (pkRecord.m_Crc == 0) return false;
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size_t pos = 0;
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pos += pkRecord.m_FilePointer;
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bool isCompressed = (pkRecord.m_IsCompressed & 0xff) > 0;
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auto inPackSize = isCompressed ? pkRecord.m_CompressedSize : pkRecord.m_UncompressedSize;
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FILE* file;
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#ifdef _WIN32
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fopen_s(&file, m_FilePath.string().c_str(), "rb");
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#elif __APPLE__
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// macOS has 64bit file IO by default
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file = fopen(m_FilePath.string().c_str(), "rb");
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#else
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file = fopen64(m_FilePath.string().c_str(), "rb");
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#endif
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fseek(file, pos, SEEK_SET);
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if (!isCompressed) {
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char* tempData = static_cast<char*>(malloc(pkRecord.m_UncompressedSize));
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int32_t readInData = fread(tempData, sizeof(uint8_t), pkRecord.m_UncompressedSize, file);
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*data = tempData;
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*len = pkRecord.m_UncompressedSize;
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fclose(file);
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return true;
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}
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pos += 5; // skip header
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fseek(file, pos, SEEK_SET);
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char* decompressedData = static_cast<char*>(malloc(pkRecord.m_UncompressedSize));
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uint32_t currentReadPos = 0;
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while (true) {
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if (currentReadPos >= pkRecord.m_UncompressedSize) break;
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uint32_t size;
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int32_t readInData = fread(&size, sizeof(uint32_t), 1, file);
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pos += 4; // Move pointer position 4 to the right
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char* chunk = static_cast<char*>(malloc(size));
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int32_t readInData2 = fread(chunk, sizeof(int8_t), size, file);
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pos += size; // Move pointer position the amount of bytes read to the right
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int32_t err;
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currentReadPos += ZCompression::Decompress(reinterpret_cast<uint8_t*>(chunk), size, reinterpret_cast<uint8_t*>(decompressedData + currentReadPos), ZCompression::MAX_SD0_CHUNK_SIZE, err);
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free(chunk);
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}
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*data = decompressedData;
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*len = pkRecord.m_UncompressedSize;
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fclose(file);
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return true;
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}
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