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// Copyright (c) 2013 The Chromium 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 "storage/browser/blob/scoped_file.h"
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_util.h"
#include "base/location.h"
#include "base/task_runner.h"
#include "base/thread_task_runner_handle.h"
namespace storage {
ScopedFile::ScopedFile()
: scope_out_policy_(DONT_DELETE_ON_SCOPE_OUT) {
}
ScopedFile::ScopedFile(const base::FilePath& path,
ScopeOutPolicy policy,
const scoped_refptr<base::TaskRunner>& file_task_runner)
: path_(path),
scope_out_policy_(policy),
file_task_runner_(file_task_runner) {
DCHECK(path.empty() || policy != DELETE_ON_SCOPE_OUT ||
file_task_runner.get())
<< "path:" << path.value() << " policy:" << policy
<< " runner:" << file_task_runner.get();
}
ScopedFile::ScopedFile(ScopedFile&& other) {
MoveFrom(other);
}
ScopedFile::~ScopedFile() {
Reset();
}
void ScopedFile::AddScopeOutCallback(
const ScopeOutCallback& callback,
base::TaskRunner* callback_runner) {
if (!callback_runner)
callback_runner = base::ThreadTaskRunnerHandle::Get().get();
scope_out_callbacks_.push_back(std::make_pair(callback, callback_runner));
}
base::FilePath ScopedFile::Release() {
base::FilePath path = path_;
path_.clear();
scope_out_callbacks_.clear();
scope_out_policy_ = DONT_DELETE_ON_SCOPE_OUT;
return path;
}
void ScopedFile::Reset() {
if (path_.empty())
return;
for (ScopeOutCallbackList::iterator iter = scope_out_callbacks_.begin();
iter != scope_out_callbacks_.end(); ++iter) {
iter->second->PostTask(FROM_HERE, base::Bind(iter->first, path_));
}
if (scope_out_policy_ == DELETE_ON_SCOPE_OUT) {
file_task_runner_->PostTask(
FROM_HERE,
base::Bind(base::IgnoreResult(&base::DeleteFile),
path_, false /* recursive */));
}
// Clear all fields.
Release();
}
void ScopedFile::MoveFrom(ScopedFile& other) {
Reset();
scope_out_policy_ = other.scope_out_policy_;
scope_out_callbacks_.swap(other.scope_out_callbacks_);
file_task_runner_ = other.file_task_runner_;
path_ = other.Release();
}
} // namespace storage
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