diff options
Diffstat (limited to 'net/quic/quic_data_reader.cc')
-rw-r--r-- | net/quic/quic_data_reader.cc | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/net/quic/quic_data_reader.cc b/net/quic/quic_data_reader.cc deleted file mode 100644 index 263bafb..0000000 --- a/net/quic/quic_data_reader.cc +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright (c) 2012 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/quic/quic_data_reader.h" - -using base::StringPiece; - -namespace net { - -QuicDataReader::QuicDataReader(const char* data, const size_t len) - : data_(data), - len_(len), - pos_(0) { -} - -bool QuicDataReader::ReadUInt16(uint16* result) { - // Make sure that we have the whole uint16. - // TODO(rch): use sizeof instead of magic numbers. - // Refactor to use a common Read(void* buffer, size_t len) - // method that will do the memcpy and the advancement of pos_. - if (!CanRead(2)) { - OnFailure(); - return false; - } - - // Read into result. - memcpy(result, data_ + pos_, 2); - - // Iterate. - pos_ += 2; - - return true; -} - -bool QuicDataReader::ReadUInt32(uint32* result) { - // Make sure that we have the whole uint32. - if (!CanRead(4)) { - OnFailure(); - return false; - } - - // Read into result. - memcpy(result, data_ + pos_, 4); - - // Iterate. - pos_ += 4; - - return true; -} - -bool QuicDataReader::ReadUInt48(uint64* result) { - uint32 lo; - if (!ReadUInt32(&lo)) { - return false; - } - - uint16 hi; - if (!ReadUInt16(&hi)) { - return false; - } - - *result = hi; - *result <<= 32; - *result += lo; - - return true; -} - -bool QuicDataReader::ReadUInt64(uint64* result) { - // Make sure that we have the whole uint64. - if (!CanRead(8)) { - OnFailure(); - return false; - } - - // Read into result. - memcpy(result, data_ + pos_, 8); - - // Iterate. - pos_ += 8; - - return true; -} - -bool QuicDataReader::ReadUInt128(uint128* result) { - uint64 high_hash; - uint64 low_hash; - - if (!ReadUInt64(&low_hash)) { - return false; - } - if (!ReadUInt64(&high_hash)) { - return false; - } - - *result = uint128(high_hash, low_hash); - return true; -} - -bool QuicDataReader::ReadStringPiece16(StringPiece* result) { - // Read resultant length. - uint16 result_len; - if (!ReadUInt16(&result_len)) { - // OnFailure() already called. - return false; - } - - return ReadStringPiece(result, result_len); -} - -bool QuicDataReader::ReadBytes(void* result, size_t size) { - // Make sure that we have enough data to read. - if (!CanRead(size)) { - OnFailure(); - return false; - } - - // Read into result. - memcpy(result, data_ + pos_, size); - - // Iterate. - pos_ += size; - - return true; -} - - -bool QuicDataReader::ReadStringPiece(StringPiece* result, size_t size) { - // Make sure that we have enough data to read. - if (!CanRead(size)) { - OnFailure(); - return false; - } - - // Set result. - result->set(data_ + pos_, size); - - // Iterate. - pos_ += size; - - return true; -} - -StringPiece QuicDataReader::PeekRemainingPayload() { - return StringPiece(data_ + pos_, len_ - pos_); -} - -StringPiece QuicDataReader::ReadRemainingPayload() { - StringPiece payload = PeekRemainingPayload(); - pos_ = len_; - return payload; -} - -bool QuicDataReader::IsDoneReading() const { - return len_ == pos_; -} - -size_t QuicDataReader::BytesRemaining() const { - return len_ - pos_; -} - -bool QuicDataReader::CanRead(size_t bytes) const { - return bytes <= (len_ - pos_); -} - -void QuicDataReader::OnFailure() { - // Set our iterator to the end of the buffer so that further reads fail - // immediately. - pos_ = len_; -} - -} // namespace net |