Function GetSourceString

Engine/source/EtCooker/CompiledDataGenerator.cpp:93–167

--------------------------------- GetHeaderString Returns a string for the file header

// Returns a string for the file header
//
std::string GetSourceString(std::vector<uint8> const& data, std::string const& name, std::string const& compiledDataName)
{
	std::string ret;

	// begin of file
	ret += 
		"// this file is automatically generated, do not edit!\n"
		"#include \"" + name + std::string(".h\"\n"
		"\n"
		"unsigned char const* GetCompiledData_") + name + std::string("()\n"
		"{\n"
		"\treturn generated::wrapper::") + compiledDataName + std::string(";\n"
		"}\n"
		"\n"
		"namespace generated { \n"
		"\n"
		"unsigned char const wrapper::") + compiledDataName + std::string("[] = {");

	// end of file
	std::string eof;
	eof += 
		" };\n"
		"\n"
		"} // namespace generated\n"
		"\n";

	// make sure our string is allocated enough space in one go
	static size_t const s_NumHexChars = 6u;// number of characters per byte
	static size_t const s_StringSizeBuffer = 1024u;// number of characters per byte
	ret.reserve(ret.size() + data.size() * s_NumHexChars + eof.size() + s_StringSizeBuffer);

	// add the bytes
	static size_t const s_BytesPerLine = 16u;
	static unsigned char s_HexChars[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

	for (size_t dataIdx = 0u; dataIdx < data.size(); ++dataIdx)
	{
		// insert new line or space
		if (dataIdx % s_BytesPerLine == 0u)
		{
			ret += "\n\t";
		}
		else if (dataIdx % (s_BytesPerLine / 2) == 0u)
		{
			ret += "    ";
		}
		else
		{
			ret += " ";
		}

		// indicate hex number
		ret += "0x";

		// generate hex code
		uint8 const currentByte = data[dataIdx];
		uint8 const bigEndian = currentByte >> 4u;
		uint8 const smallEndian = currentByte & 0x0F;