Archive the original C++ Arcturus PAK decoder prototype

Core/FileFormats/ArcturusPAK.cpp

@@ -0,0 +1,93 @@
+#include <iostream>
+#include <cstdint>
+#include <fstream>
+#include <vector>
+#include <string>
+
+enum class EntryType : uint8_t {
+	File = 0,
+	Directory = 1
+};
+
+struct FileEntry {
+	EntryType Type;
+	int32_t Offset;
+	int32_t SizeCompressed;
+	int32_t SizeOriginal;
+	std::string FileName;
+};
+
+std::vector<FileEntry> ReadEntries(std::istream& stream, int version) {
+	std::vector<FileEntry> entries;
+
+	stream.seekg(-9, std::ios_base::end);
+	if(!stream) {
+		return entries;
+	}
+
+	uint32_t entryTableOffset;
+	uint16_t entryCount;
+
+	if(version == 0) {
+		stream.read(reinterpret_cast<char*>(&entryTableOffset), sizeof(entryTableOffset));
+		stream.read(reinterpret_cast<char*>(&entryCount), sizeof(entryCount));
+	} else {
+		stream.read(reinterpret_cast<char*>(&entryTableOffset), sizeof(entryTableOffset));
+		stream.seekg(2, std::ios_base::cur);
+		stream.read(reinterpret_cast<char*>(&entryCount), sizeof(entryCount));
+		stream.seekg(1, std::ios_base::cur);
+	}
+
+	std::cout << "entryTableOffset: " << entryTableOffset << std::endl;
+	std::cout << "entryCount: " << entryCount << std::endl;
+
+	stream.seekg(entryTableOffset, std::ios_base::beg);
+	for(size_t i = 0; i < entryCount; i++) {
+		uint8_t strLen;
+
+		stream.read(reinterpret_cast<char*>(&strLen), sizeof(strLen));
+
+		FileEntry entry;
+		entry.Type = static_cast<EntryType>(stream.get());
+		stream.read(reinterpret_cast<char*>(&entry.Offset), sizeof(entry.Offset));
+		stream.read(reinterpret_cast<char*>(&entry.SizeCompressed), sizeof(entry.SizeCompressed));
+		stream.read(reinterpret_cast<char*>(&entry.SizeOriginal), sizeof(entry.SizeOriginal));
+
+		std::string fileName;
+		fileName.resize(strLen);
+		stream.read(&fileName[0], strLen);
+		stream.seekg(1, std::ios::cur); // Skip null terminator
+		entry.FileName = fileName;
+
+		entries.push_back(entry);
+	}
+
+	return entries;
+}
+
+int main() {
+
+	const std::string EXPECTED_PAK_FILE = "data.pak";
+	std::ifstream file(EXPECTED_PAK_FILE, std::ios::binary);
+	if(!file) {
+		std::cerr << "Failed to open file handle for " << EXPECTED_PAK_FILE << std::endl;
+		std::cerr << "Reason: I/O error - make sure this file exists and is readable" << std::endl;
+		return 1;
+	}
+
+	std::cout << "Reading PAK data from " << EXPECTED_PAK_FILE << " ..." << std::endl;
+
+	auto entries = ReadEntries(file, 0);
+	for(const auto& entry : entries) {
+		std::cout << "Type: " << static_cast<int>(entry.Type) << std::endl;
+		std::cout << "Offset: " << entry.Offset << std::endl;
+		std::cout << "SizeCompressed: " << entry.SizeCompressed << std::endl;
+		std::cout << "SizeOriginal: " << entry.SizeOriginal << std::endl;
+		std::cout << "FileName: " << entry.FileName << std::endl;
+		std::cout << std::endl;
+	}
+
+	std::cout << "Read " << entries.size() << " entries " << std::endl;
+
+	return 0;
+}

build.bat

@@ -7,6 +7,8 @@ if not exist %DEFAULT_BUILD_DIR% mkdir %DEFAULT_BUILD_DIR%
 set CPP_MAIN=Core\RagLite2.cpp
 set DEBUG_EXE=%DEFAULT_BUILD_DIR%/RagLiteWin32Dbg.exe
 set RELEASE_EXE=%DEFAULT_BUILD_DIR%/RagLiteWin32.exe
+set PAK_MAIN=Core\FileFormats\ArcturusPAK.cpp
+set PAK_COMMANDLINE_EXE=%DEFAULT_BUILD_DIR%/ArcturusPAK.exe
 set PROGRAM_DLLS=PatternTest DummyTest
 set CLI_TOOLS=DependencyCheck
 set RUNTIME_LIBS=gdi32.lib shlwapi.lib user32.lib xinput.lib winmm.lib imagehlp.lib
@@ -130,6 +132,7 @@ for %%T in (%CLI_TOOLS%) do (
 
 call :msvcbuild !DEBUG_EXE! "%CPP_MAIN%" "%RUNTIME_LIBS%" "%DEBUG_COMPILE_FLAGS%" "%ICON_RES% %DEBUG_LINK_FLAGS%" || exit /b
 call :msvcbuild !RELEASE_EXE! "%CPP_MAIN%" "%RUNTIME_LIBS%" "%RELEASE_COMPILE_FLAGS%" "%ICON_RES% %RELEASE_LINK_FLAGS%" || exit /b
+call :msvcbuild !PAK_COMMANDLINE_EXE! "%PAK_MAIN%" "%RUNTIME_LIBS%" "%RELEASE_COMPILE_FLAGS%" "%ICON_RES% %RELEASE_LINK_FLAGS%" || exit /b
 call :checkdeps !DEBUG_EXE! %DEFAULT_BUILD_DIR% || exit /b
 call :checkdeps !RELEASE_EXE! %DEFAULT_BUILD_DIR% || exit /b