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content / browser / devtools / devtools_stream_file.h [blame]
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_STREAM_FILE_H_
#define CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_STREAM_FILE_H_
#include "base/files/file.h"
#include "base/memory/scoped_refptr.h"
#include "base/task/sequenced_task_runner.h"
#include "content/browser/devtools/devtools_io_context.h"
#include <string>
namespace content {
class DevToolsStreamFile : public DevToolsIOContext::Stream {
public:
static scoped_refptr<DevToolsStreamFile> Create(DevToolsIOContext* context,
bool binary);
const std::string& handle() const { return handle_; }
void Append(std::unique_ptr<std::string> data);
private:
DevToolsStreamFile(DevToolsIOContext* context, bool binary);
~DevToolsStreamFile() override;
void Read(off_t position, size_t max_size, ReadCallback callback) override;
void ReadOnFileSequence(off_t position,
size_t max_size,
ReadCallback callback);
Status InnerReadOnFileSequence(off_t position,
size_t max_size,
std::string& out_data);
void AppendOnFileSequence(std::unique_ptr<std::string> data);
bool InitOnFileSequenceIfNeeded();
const std::string handle_;
const bool binary_;
base::File file_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
bool had_errors_ = false;
off_t last_written_pos_ = 0;
off_t last_read_pos_ = 0;
};
} // namespace content
#endif // CONTENT_BROWSER_DEVTOOLS_DEVTOOLS_STREAM_FILE_H_