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// Copyright 2014 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 "content/browser/loader/temporary_file_stream.h"
#include <utility>
#include "base/bind.h"
#include "base/callback.h"
#include "base/files/file_proxy.h"
#include "base/memory/ref_counted.h"
#include "content/public/browser/browser_thread.h"
#include "net/base/file_stream.h"
#include "storage/browser/blob/shareable_file_reference.h"
using storage::ShareableFileReference;
namespace content {
namespace {
void DidCreateTemporaryFile(const CreateTemporaryFileStreamCallback& callback,
std::unique_ptr<base::FileProxy> file_proxy,
base::File::Error error_code,
const base::FilePath& file_path) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
if (!file_proxy->IsValid()) {
callback.Run(error_code, std::unique_ptr<net::FileStream>(), NULL);
return;
}
scoped_refptr<base::TaskRunner> task_runner =
BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE);
// Cancelled or not, create the deletable_file so the temporary is cleaned up.
scoped_refptr<ShareableFileReference> deletable_file =
ShareableFileReference::GetOrCreate(
file_path,
ShareableFileReference::DELETE_ON_FINAL_RELEASE,
task_runner.get());
std::unique_ptr<net::FileStream> file_stream(
new net::FileStream(file_proxy->TakeFile(), task_runner));
callback.Run(error_code, std::move(file_stream), deletable_file.get());
}
} // namespace
void CreateTemporaryFileStream(
const CreateTemporaryFileStreamCallback& callback) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
std::unique_ptr<base::FileProxy> file_proxy(new base::FileProxy(
BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE).get()));
base::FileProxy* proxy = file_proxy.get();
proxy->CreateTemporary(
base::File::FLAG_ASYNC,
base::Bind(&DidCreateTemporaryFile, callback, Passed(&file_proxy)));
}
} // namespace content
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