54 lines
1.3 KiB
C++
54 lines
1.3 KiB
C++
// Copyright (c) 2014 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "atom/common/asar/scoped_temporary_file.h"
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#include <vector>
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#include "base/file_util.h"
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#include "base/threading/thread_restrictions.h"
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namespace asar {
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ScopedTemporaryFile::ScopedTemporaryFile() {
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}
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ScopedTemporaryFile::~ScopedTemporaryFile() {
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if (!path_.empty()) {
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base::ThreadRestrictions::ScopedAllowIO allow_io;
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base::DeleteFile(path_, false);
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}
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}
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bool ScopedTemporaryFile::Init() {
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if (!path_.empty())
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return true;
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base::ThreadRestrictions::ScopedAllowIO allow_io;
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return base::CreateTemporaryFile(&path_);
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}
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bool ScopedTemporaryFile::InitFromFile(const base::FilePath& path,
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uint64 offset, uint64 size) {
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if (!Init())
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return false;
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base::File src(path, base::File::FLAG_OPEN | base::File::FLAG_READ);
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if (!src.IsValid())
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return false;
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std::vector<char> buf(size);
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int len = src.Read(offset, buf.data(), buf.size());
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if (len != static_cast<int>(size))
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return false;
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base::File dest(path_, base::File::FLAG_OPEN | base::File::FLAG_WRITE);
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if (!dest.IsValid())
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return false;
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return dest.WriteAtCurrentPos(buf.data(), buf.size()) ==
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static_cast<int>(size);
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}
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} // namespace asar
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