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// Copyright 2016 The Chromium OS 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 "bsdiff/buffer_file.h"
#include "bsdiff/bspatch.h"
namespace bsdiff {
BufferFile::BufferFile(std::unique_ptr<FileInterface> file, size_t size)
: file_(std::move(file)) {
buffer_.reserve(size);
}
BufferFile::~BufferFile() {
Close();
}
bool BufferFile::Read(void* buf, size_t count, size_t* bytes_read) {
return false;
}
bool BufferFile::Write(const void* buf, size_t count, size_t* bytes_written) {
const uint8_t* data = static_cast<const uint8_t*>(buf);
buffer_.insert(buffer_.end(), data, data + count);
*bytes_written = count;
return true;
}
bool BufferFile::Seek(off_t pos) {
return false;
}
bool BufferFile::Close() {
if (!WriteAll(file_, buffer_.data(), buffer_.size()))
return false;
// Prevent writing |buffer_| to |file_| again if Close() is called more than
// once.
buffer_.clear();
return file_->Close();
}
bool BufferFile::GetSize(uint64_t* size) {
*size = buffer_.size();
return true;
}
} // namespace bsdiff
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