60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2015 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/base/byte_stream.h"
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#include <cstring>
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#include "xenia/base/assert.h"
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namespace xe {
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ByteStream::ByteStream(uint8_t* data, size_t data_length, size_t offset)
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: data_(data), data_length_(data_length), offset_(offset) {}
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ByteStream::~ByteStream() = default;
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void ByteStream::Advance(size_t num_bytes) { offset_ += num_bytes; }
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void ByteStream::Read(uint8_t* buf, size_t len) {
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assert_true(offset_ < data_length_);
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std::memcpy(buf, data_ + offset_, len);
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Advance(len);
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}
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void ByteStream::Write(const uint8_t* buf, size_t len) {
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assert_true(offset_ < data_length_);
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std::memcpy(data_ + offset_, buf, len);
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Advance(len);
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}
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template <>
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std::string ByteStream::Read() {
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std::string str;
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uint32_t len = Read<uint32_t>();
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str.resize(len);
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Read(reinterpret_cast<uint8_t*>(&str[0]), len);
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return str;
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}
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template <>
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std::wstring ByteStream::Read() {
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std::wstring str;
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uint32_t len = Read<uint32_t>();
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str.resize(len);
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Read(reinterpret_cast<uint8_t*>(&str[0]), len * 2);
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return str;
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}
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} // namespace xe
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