diff options
Diffstat (limited to 'base/big_endian.cc')
-rw-r--r-- | base/big_endian.cc | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/base/big_endian.cc b/base/big_endian.cc new file mode 100644 index 0000000..fd9e760 --- /dev/null +++ b/base/big_endian.cc @@ -0,0 +1,97 @@ +// Copyright 2014 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "base/big_endian.h" + +#include "base/strings/string_piece.h" + +namespace base { + +BigEndianReader::BigEndianReader(const char* buf, size_t len) + : ptr_(buf), end_(ptr_ + len) {} + +bool BigEndianReader::Skip(size_t len) { + if (ptr_ + len > end_) + return false; + ptr_ += len; + return true; +} + +bool BigEndianReader::ReadBytes(void* out, size_t len) { + if (ptr_ + len > end_) + return false; + memcpy(out, ptr_, len); + ptr_ += len; + return true; +} + +bool BigEndianReader::ReadPiece(base::StringPiece* out, size_t len) { + if (ptr_ + len > end_) + return false; + *out = base::StringPiece(ptr_, len); + ptr_ += len; + return true; +} + +template<typename T> +bool BigEndianReader::Read(T* value) { + if (ptr_ + sizeof(T) > end_) + return false; + ReadBigEndian<T>(ptr_, value); + ptr_ += sizeof(T); + return true; +} + +bool BigEndianReader::ReadU8(uint8* value) { + return Read(value); +} + +bool BigEndianReader::ReadU16(uint16* value) { + return Read(value); +} + +bool BigEndianReader::ReadU32(uint32* value) { + return Read(value); +} + +BigEndianWriter::BigEndianWriter(char* buf, size_t len) + : ptr_(buf), end_(ptr_ + len) {} + +bool BigEndianWriter::Skip(size_t len) { + if (ptr_ + len > end_) + return false; + ptr_ += len; + return true; +} + +bool BigEndianWriter::WriteBytes(const void* buf, size_t len) { + if (ptr_ + len > end_) + return false; + memcpy(ptr_, buf, len); + ptr_ += len; + return true; +} + +template<typename T> +bool BigEndianWriter::Write(T value) { + if (ptr_ + sizeof(T) > end_) + return false; + WriteBigEndian<T>(ptr_, value); + ptr_ += sizeof(T); + return true; +} + +bool BigEndianWriter::WriteU8(uint8 value) { + return Write(value); +} + +bool BigEndianWriter::WriteU16(uint16 value) { + return Write(value); +} + +bool BigEndianWriter::WriteU32(uint32 value) { + return Write(value); +} + +} // namespace base |