ui/base/resource: Remove dependency on net's big_endian implementation.

To remove this dependency we ended up moving big_endian* to base/, since besides ui/,
big_endian is also used by other top-level modules: chrome/utility/, cloud_print, media/cast

This way we removed one more net dependency from ui/base/.

BUG=299841
TEST=ui_unittests
R=tony@chromium.org,mark@chromium.org,hclam@chromium.org,vitalybuka@chromium.org
TBR=ben@chromium.org

Review URL: https://codereview.chromium.org/145873006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253510 0039d316-1c4b-4281-b951-d872f2087c98

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