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/*
* 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.
*/
#ifndef ART_COMPILER_VECTOR_OUTPUT_STREAM_H_
#define ART_COMPILER_VECTOR_OUTPUT_STREAM_H_
#include "output_stream.h"
#include <string>
#include <string.h>
#include <vector>
namespace art {
class VectorOutputStream FINAL : public OutputStream {
public:
VectorOutputStream(const std::string& location, std::vector<uint8_t>* vector);
virtual ~VectorOutputStream() {}
bool WriteFully(const void* buffer, size_t byte_count) {
if (static_cast<size_t>(offset_) == vector_->size()) {
const uint8_t* start = reinterpret_cast<const uint8_t*>(buffer);
vector_->insert(vector_->end(), &start[0], &start[byte_count]);
offset_ += byte_count;
} else {
off_t new_offset = offset_ + byte_count;
EnsureCapacity(new_offset);
memcpy(&(*vector_)[offset_], buffer, byte_count);
offset_ = new_offset;
}
return true;
}
off_t Seek(off_t offset, Whence whence);
private:
void EnsureCapacity(off_t new_offset) {
if (new_offset > static_cast<off_t>(vector_->size())) {
vector_->resize(new_offset);
}
}
off_t offset_;
std::vector<uint8_t>* const vector_;
DISALLOW_COPY_AND_ASSIGN(VectorOutputStream);
};
} // namespace art
#endif // ART_COMPILER_VECTOR_OUTPUT_STREAM_H_
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