ui/base/resource: Roll our own version of ReadBigEndian() function.

net/base/big_endian.cc

-// Copyright (c) 2011 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 "net/base/big_endian.h"
-
-#include "base/strings/string_piece.h"
-
-namespace net {
-
-BigEndianReader::BigEndianReader(const void* buf, size_t len)
-    : ptr_(reinterpret_cast<const char*>(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(void* buf, size_t len)
-    : ptr_(reinterpret_cast<char*>(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 net
-