| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "buffered_output_stream.h" |
| |
| #include <string.h> |
| |
| namespace art { |
| |
| BufferedOutputStream::BufferedOutputStream(OutputStream* out) |
| : OutputStream(out->GetLocation()), out_(out), used_(0) {} |
| |
| bool BufferedOutputStream::WriteFully(const void* buffer, int64_t byte_count) { |
| if (byte_count > kBufferSize) { |
| Flush(); |
| return out_->WriteFully(buffer, byte_count); |
| } |
| if (used_ + byte_count > kBufferSize) { |
| bool success = Flush(); |
| if (!success) { |
| return false; |
| } |
| } |
| const uint8_t* src = reinterpret_cast<const uint8_t*>(buffer); |
| memcpy(&buffer_[used_], src, byte_count); |
| used_ += byte_count; |
| return true; |
| } |
| |
| bool BufferedOutputStream::Flush() { |
| bool success = true; |
| if (used_ > 0) { |
| success = out_->WriteFully(&buffer_[0], used_); |
| used_ = 0; |
| } |
| return success; |
| } |
| |
| off_t BufferedOutputStream::Seek(off_t offset, Whence whence) { |
| if (!Flush()) { |
| return -1; |
| } |
| return out_->Seek(offset, whence); |
| } |
| |
| } // namespace art |