// Copyright 2016 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "bsdiff/buffer_file.h"
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#include "bsdiff/bspatch.h"
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namespace bsdiff {
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BufferFile::BufferFile(std::unique_ptr<FileInterface> file, size_t size)
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: file_(std::move(file)) {
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buffer_.reserve(size);
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}
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BufferFile::~BufferFile() {
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Close();
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}
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bool BufferFile::Read(void* buf, size_t count, size_t* bytes_read) {
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return false;
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}
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bool BufferFile::Write(const void* buf, size_t count, size_t* bytes_written) {
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const uint8_t* data = static_cast<const uint8_t*>(buf);
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buffer_.insert(buffer_.end(), data, data + count);
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*bytes_written = count;
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return true;
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}
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bool BufferFile::Seek(off_t pos) {
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return false;
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}
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bool BufferFile::Close() {
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if (!WriteAll(file_, buffer_.data(), buffer_.size()))
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return false;
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// Prevent writing |buffer_| to |file_| again if Close() is called more than
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// once.
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buffer_.clear();
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return file_->Close();
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}
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bool BufferFile::GetSize(uint64_t* size) {
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*size = buffer_.size();
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return true;
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}
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} // namespace bsdiff
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