diff options
Diffstat (limited to 'runtime/vector_output_stream.cc')
-rw-r--r-- | runtime/vector_output_stream.cc | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/runtime/vector_output_stream.cc b/runtime/vector_output_stream.cc new file mode 100644 index 0000000000..e5ff729036 --- /dev/null +++ b/runtime/vector_output_stream.cc @@ -0,0 +1,48 @@ +/* + * 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 "vector_output_stream.h" + +#include "base/logging.h" + +namespace art { + +VectorOutputStream::VectorOutputStream(const std::string& location, std::vector<uint8_t>& vector) + : OutputStream(location), offset_(vector.size()), vector_(vector) {} + +off_t VectorOutputStream::Seek(off_t offset, Whence whence) { + CHECK(whence == kSeekSet || whence == kSeekCurrent || whence == kSeekEnd) << whence; + off_t new_offset = 0; + switch (whence) { + case kSeekSet: { + new_offset = offset; + break; + } + case kSeekCurrent: { + new_offset = offset_ + offset; + break; + } + case kSeekEnd: { + new_offset = vector_.size() + offset; + break; + } + } + EnsureCapacity(new_offset); + offset_ = new_offset; + return offset_; +} + +} // namespace art |