mirror of
https://github.com/borgesdan/xn65
synced 2024-12-29 21:54:47 +01:00
599 lines
14 KiB
C++
599 lines
14 KiB
C++
#include "xna/csharp/binary.hpp"
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#include "xna/csharp/buffer.hpp"
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namespace xna {
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BinaryReader::BinaryReader(sptr<Stream> const& input) {
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Exception::ThrowIfNull(input, nameof(input));
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stream = input;
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buffer = std::vector<Byte>(bufferLength);
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}
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Int BinaryReader::PeekChar()
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{
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const auto position = stream->Position();
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const auto num = Read();
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stream->Seek(position, SeekOrigin::Begin);
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return num;
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}
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Int BinaryReader::Read()
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{
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const auto result = InternalReadOneChar();
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return result;
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}
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bool BinaryReader::ReadBoolean()
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{
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FillBuffer(1);
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return buffer[0] > 0;
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}
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Byte BinaryReader::ReadByte()
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{
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const auto num = stream->ReadByte();
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return static_cast<Byte>(num);
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}
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Sbyte BinaryReader::ReadSByte()
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{
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FillBuffer(1);
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return static_cast<Sbyte>(buffer[0]);
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}
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Char BinaryReader::ReadChar()
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{
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auto num = Read();
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if (num == -1)
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return '\0';
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return static_cast<Char>(num);
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}
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Short BinaryReader::ReadInt16()
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{
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FillBuffer(2);
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return static_cast<Short>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8);
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}
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Ushort BinaryReader::ReadUInt16()
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{
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FillBuffer(2);
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return static_cast<Ushort>(
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static_cast<Uint>(buffer[0])
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| static_cast<Uint>(buffer[1]) << 8);
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}
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Int BinaryReader::ReadInt32()
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{
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FillBuffer(4);
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return static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 16
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| static_cast<Int>(buffer[3]) << 24;
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}
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Uint BinaryReader::ReadUInt32()
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{
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FillBuffer(4);
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return static_cast<Uint>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 16
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| static_cast<Int>(buffer[3]) << 24);
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}
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Long BinaryReader::ReadInt64()
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{
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FillBuffer(8);
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const auto num1 = static_cast<Uint>(
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static_cast<Int>(buffer[4])
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| static_cast<Int>(buffer[5]) << 8
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| static_cast<Int>(buffer[6]) << 16
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| static_cast<Int>(buffer[7]) << 24);
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const auto num2 = static_cast<Uint>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 16
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| static_cast<Int>(buffer[3]) << 24);
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return static_cast<Long>(num1) << 32 | static_cast<Long>(num2);
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}
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Ulong BinaryReader::ReadUInt64()
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{
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FillBuffer(8);
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const auto num1 = static_cast<Uint>(
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static_cast<Int>(buffer[4])
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| static_cast<Int>(buffer[5]) << 8
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| static_cast<Int>(buffer[6]) << 16
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| static_cast<Int>(buffer[7]) << 24);
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const auto num2 = static_cast<Uint>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 16
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| static_cast<Int>(buffer[3]) << 24);
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return static_cast<Ulong>(num1) << 32 | static_cast<Ulong>(num2);
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}
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float BinaryReader::ReadSingle()
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{
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FillBuffer(4);
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const auto num = static_cast<Uint>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 16
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| static_cast<Int>(buffer[3]) << 24);
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return *(float*)#
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}
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double BinaryReader::ReadDouble()
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{
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FillBuffer(8);
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const auto num1 = static_cast<Uint>(
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static_cast<Int>(buffer[4])
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| static_cast<Int>(buffer[5]) << 8
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| static_cast<Int>(buffer[6]) << 16
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| static_cast<Int>(buffer[7]) << 24);
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const auto num2 = static_cast<Uint>(
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static_cast<Int>(buffer[0])
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| static_cast<Int>(buffer[1]) << 8
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| static_cast<Int>(buffer[2]) << 6
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| static_cast<Int>(buffer[3]) << 24);
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const auto num3 = static_cast<Ulong>(num1) << 32 | static_cast<Ulong>(num2);
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return *(double*)&num3;
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}
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std::string BinaryReader::ReadString()
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{
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static const auto empty = std::string();
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Int num = 0;
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auto val1 = Read7BitEncodedInt();
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if (val1 < 0) {
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//xna_error_apply(err, XnaErrorCode::INVALID_OPERATION);
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return empty;
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}
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if (val1 == 0)
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return empty;
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if (charBytes.empty())
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charBytes.resize(maxCharBytesSize);
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if (charBuffer.empty())
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charBuffer.resize(maxCharBytesSize);
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std::string sb;
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do {
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const auto byteCount = stream->Read(charBytes, 0, val1 - num > 128 ? 128 : val1 - num);
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if (byteCount == 0) {
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//xna_error_apply(err, XnaErrorCode::END_OF_FILE);
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return empty;
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}
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auto data = reinterpret_cast<char*>(charBytes.data());
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const auto result = std::string(data);
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if (num == 0 && byteCount == val1) {
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return result;
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}
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sb.append(result);
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num += byteCount;
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} while (num < val1);
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return sb;
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}
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Int BinaryReader::InternalReadOneChar()
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{
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Int num1 = 0;
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Long num2 = 0;
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Long num3 = stream->Position();
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if (charBytes.empty())
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charBytes.resize(128);
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if (singleChar.empty())
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singleChar.resize(1);
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while (num1 == 0)
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{
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//auto byteCount = m2BytesPerChar ? 2 : 1;
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auto byteCount = 1;
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const auto num4 = stream->ReadByte();
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charBytes[0] = static_cast<Byte>(num4);
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if (num4 == -1)
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byteCount = 0;
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if (byteCount == 2) {
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auto num5 = stream->ReadByte();
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charBytes[1] = static_cast<Byte>(num5);
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if (num5 == -1)
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byteCount = 1;
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}
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if (byteCount == 0) {
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return -1;
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}
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auto data = reinterpret_cast<char*>(charBytes.data());
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const auto result = std::string(data, data + byteCount);
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if (!result.empty())
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{
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num1 = static_cast<Int>(result.size());
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singleChar[0] = result[0];
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}
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}
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return num1 == 0 ? -1 : static_cast<Int>(singleChar[0]);
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}
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void BinaryReader::FillBuffer(Int numBytes)
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{
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if (numBytes < 0 || numBytes > buffer.size()) {
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Exception::Throw(Exception::OUT_OF_BOUNDS);
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}
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Int bytesRead = 0;
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Int n = 0;
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if (numBytes == 1) {
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n = stream->ReadByte();
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if (n == -1){
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Exception::Throw(Exception::END_OF_FILE);
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}
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buffer[0] = static_cast<Byte>(n);
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return;
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}
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do {
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n = stream->Read(buffer, bytesRead, numBytes - bytesRead);
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if (n == 0) {
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Exception::Throw(Exception::END_OF_FILE);
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}
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bytesRead += n;
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} while (bytesRead < numBytes);
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}
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Int BinaryReader::InternalReadChars(Char* buffer, size_t bufferSize, size_t index, size_t count)
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{
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auto charCount = count;
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if (charBytes.empty())
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charBytes.resize(128);
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while (charCount > 0) {
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auto count1 = charCount;
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if (count1 > 1)
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--count1;
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/*if (m2BytesPerChar)
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count1 <<= 1;*/
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if (count1 > 128)
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count1 = 128;
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Int position = 0;
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Int byteCount;
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std::vector<Byte> numArray;
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byteCount = stream->Read(charBytes, 0, static_cast<Int>(count1));
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numArray = charBytes;
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if (byteCount == 0)
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return static_cast<Int>(count - charCount);
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if (position < 0 || byteCount < 0 || (position + byteCount) > numArray.size()) {
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return -1;
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}
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if (index < 0 || charCount < 0 || (index + charCount) > bufferSize) {
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return -1;
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}
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auto data = reinterpret_cast<char*>(charBytes.data());
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auto pChars = reinterpret_cast<char*>(buffer);
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//const auto result = std::string((data + position), (pChars + index) + byteCount);
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const auto result = std::string((data + position), (data + position) + byteCount);
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Buffer::BlockCopy(result.c_str(), position, pChars, index, byteCount);
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buffer = reinterpret_cast<Char*>(pChars);
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const auto chars = static_cast<Int>(result.size());
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charCount -= chars;
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index += chars;
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}
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return static_cast<Int>(count - charCount);
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}
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Int BinaryReader::Read7BitEncodedInt()
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{
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Uint result = 0;
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Byte byteReadJustNow;
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constexpr Int MaxBytesWithoutOverflow = 4;
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for (size_t shift = 0; shift < MaxBytesWithoutOverflow * 7; shift += 7)
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{
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byteReadJustNow = ReadByte();
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result |= (byteReadJustNow & 0x7Fu) << shift;
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if (byteReadJustNow <= 0x7Fu)
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{
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return static_cast<Int>(result);
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}
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}
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byteReadJustNow = ReadByte();
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if (byteReadJustNow > 0b1111u) {
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throw std::format_error("Too many bytes in what should have been a 7-bit encoded integer.");
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}
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result |= static_cast<Uint>(byteReadJustNow) << (MaxBytesWithoutOverflow * 7);
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return static_cast<Int>(result);
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}
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Long BinaryReader::Read7BitEncodedInt64() {
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Ulong result = 0;
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Byte byteReadJustNow;
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constexpr Int MaxBytesWithoutOverflow = 9;
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for (size_t shift = 0; shift < MaxBytesWithoutOverflow * 7; shift += 7)
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{
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byteReadJustNow = ReadByte();
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result |= (static_cast<Ulong>(byteReadJustNow & 0x7Ful)) << shift;
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if (byteReadJustNow <= 0x7Fu) {
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return static_cast<Long>(result);
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}
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}
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byteReadJustNow = ReadByte();
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if (byteReadJustNow > 0b1u)
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{
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throw std::format_error("Too many bytes in what should have been a 7-bit encoded integer.");
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}
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result |= static_cast<Ulong>(byteReadJustNow) << (MaxBytesWithoutOverflow * 7);
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return static_cast<Long>(result);
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}
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Int BinaryReader::Read(std::vector<Char>& buffer, size_t index, size_t count)
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{
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return InternalReadChars(buffer.data(), buffer.size(), index, count);
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}
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Int BinaryReader::Read(std::vector<Byte>& buffer, size_t index, size_t count)
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{
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auto data = reinterpret_cast<Char*>(buffer.data());
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return InternalReadChars(data, buffer.size(), index, count);
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}
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std::vector<Byte> BinaryReader::ReadBytes(size_t count)
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{
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std::vector<Byte> result(count);
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Int numRead = 0;
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do {
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const auto n = stream->Read(result, static_cast<Int>(numRead), static_cast<Int>(count));
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if (n == 0)
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break;
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numRead += n;
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count -= n;
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} while (count > 0);
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if (numRead != result.size()) {
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std::vector<Byte> copy(numRead);
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Buffer::BlockCopy(result.data(), 0, copy.data(), 0, numRead);
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result = copy;
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}
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return result;
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}
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//Binary Writer
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BinaryWriter::BinaryWriter(sptr<Stream> const& stream) {
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Exception::ThrowIfNull(stream, nameof(stream));
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OutStream = stream;
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_buffer = std::vector<Byte>(16);
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}
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Long BinaryWriter::Seek(Int offset, SeekOrigin origin)
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{
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return OutStream->Seek(offset, origin);
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}
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void BinaryWriter::Write(bool value)
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{
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_buffer[0] = value ? static_cast<Byte>(1) : static_cast<Byte>(0);
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OutStream->Write(_buffer, 0, 1);
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}
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void BinaryWriter::Write(Byte value)
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{
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OutStream->WriteByte(value);
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}
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void BinaryWriter::Write(Sbyte value)
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{
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OutStream->WriteByte(static_cast<Byte>(value));
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}
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void BinaryWriter::Write(Byte const* buffer, Int bufferLength)
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{
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OutStream->Write(buffer, bufferLength, 0, bufferLength);
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}
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void BinaryWriter::Write(std::vector<Byte> const& buffer)
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{
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OutStream->Write(buffer, 0, static_cast<Int>(buffer.size()));
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}
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void BinaryWriter::Write(Byte const* buffer, Int bufferLength, Int index, Int count)
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{
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OutStream->Write(buffer, bufferLength, index, count);
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}
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void BinaryWriter::Write(std::vector<Byte> const& buffer, Int index, Int count)
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{
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OutStream->Write(buffer, index, count);
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}
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void BinaryWriter::Write(Char ch)
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{
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_buffer[0] = static_cast<Byte>(ch);
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OutStream->Write(_buffer, 0, 1);
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}
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void BinaryWriter::Write(double value)
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{
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Ulong num = (Ulong) * (Long*)&value;
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_buffer[0] = static_cast<Byte>(num);
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_buffer[1] = static_cast<Byte>(num >> 8);
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_buffer[2] = static_cast<Byte>(num >> 16);
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_buffer[3] = static_cast<Byte>(num >> 24);
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_buffer[4] = static_cast<Byte>(num >> 32);
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_buffer[5] = static_cast<Byte>(num >> 40);
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_buffer[6] = static_cast<Byte>(num >> 48);
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_buffer[7] = static_cast<Byte>(num >> 56);
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OutStream->Write(_buffer, 0, 8);
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}
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void BinaryWriter::Write(Short value)
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{
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_buffer[0] = static_cast<Byte>(value);
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_buffer[1] = static_cast<Byte>((Uint)value >> 8);
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OutStream->Write(_buffer, 0, 2);
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}
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void BinaryWriter::Write(Ushort value)
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{
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_buffer[0] = static_cast<Byte>(value);
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_buffer[1] = static_cast<Byte>((Uint)value >> 8);
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OutStream->Write(_buffer, 0, 2);
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}
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void BinaryWriter::Write(Int value)
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{
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_buffer[0] = static_cast<Byte>(value);
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_buffer[1] = static_cast<Byte>(value >> 8);
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_buffer[2] = static_cast<Byte>(value >> 16);
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_buffer[3] = static_cast<Byte>(value >> 24);
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OutStream->Write(_buffer, 0, 4);
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}
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void BinaryWriter::Write(Uint value)
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{
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_buffer[0] = static_cast<Byte>(value);
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_buffer[1] = static_cast<Byte>(value >> 8);
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_buffer[2] = static_cast<Byte>(value >> 16);
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_buffer[3] = static_cast<Byte>(value >> 24);
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OutStream->Write(_buffer, 0, 4);
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}
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void BinaryWriter::Write(Ulong value)
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{
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_buffer[0] = static_cast<Byte>(value);
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_buffer[1] = static_cast<Byte>(value >> 8);
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_buffer[2] = static_cast<Byte>(value >> 16);
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_buffer[3] = static_cast<Byte>(value >> 24);
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_buffer[4] = static_cast<Byte>(value >> 32);
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_buffer[5] = static_cast<Byte>(value >> 40);
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_buffer[6] = static_cast<Byte>(value >> 48);
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_buffer[7] = static_cast<Byte>(value >> 56);
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OutStream->Write(_buffer, 0, 8);
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}
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void BinaryWriter::Write(float value)
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{
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Uint num = *(Uint*)&value;
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_buffer[0] = static_cast<Byte>(num);
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_buffer[1] = static_cast<Byte>(num >> 8);
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_buffer[2] = static_cast<Byte>(num >> 16);
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_buffer[3] = static_cast<Byte>(num >> 24);
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OutStream->Write(_buffer, 0, 4);
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}
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void BinaryWriter::Write(std::string const& value)
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{
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Write(value.c_str(), value.size());
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}
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void BinaryWriter::Write(const char* _string, size_t stringLength)
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{
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Write7BitEncodedInt(static_cast<Int>(stringLength));
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const auto b = reinterpret_cast<const Byte*>(_string);
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OutStream->Write(b, static_cast<Int>(stringLength), 0, static_cast<Int>(stringLength));
|
|
}
|
|
|
|
void BinaryWriter::Write7BitEncodedInt(Int value)
|
|
{
|
|
Uint num;
|
|
for (num = static_cast<Uint>(value); num >= static_cast<Uint>(128U); num >>= 7)
|
|
Write(static_cast<Byte>(num | static_cast<Uint>(128U)));
|
|
|
|
Write(static_cast<Byte>(num));
|
|
}
|
|
|
|
void BinaryWriter::Write(Long value)
|
|
{
|
|
_buffer[0] = static_cast<Byte>(value);
|
|
_buffer[1] = static_cast<Byte>(value >> 8);
|
|
_buffer[2] = static_cast<Byte>(value >> 16);
|
|
_buffer[3] = static_cast<Byte>(value >> 24);
|
|
_buffer[4] = static_cast<Byte>(value >> 32);
|
|
_buffer[5] = static_cast<Byte>(value >> 40);
|
|
_buffer[6] = static_cast<Byte>(value >> 48);
|
|
_buffer[7] = static_cast<Byte>(value >> 56);
|
|
OutStream->Write(_buffer, 0, 8);
|
|
}
|
|
} |