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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_FILE_SYSTEM_INDEXER_H_
#define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_FILE_SYSTEM_INDEXER_H_
#include <stdint.h>
#include <map>
#include <memory>
#include <string>
#include <vector>
#include "base/files/file.h"
#include "base/functional/callback.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
namespace base {
class FilePath;
class FileEnumerator;
class Time;
}
class DevToolsFileSystemIndexer
: public base::RefCountedThreadSafe<DevToolsFileSystemIndexer> {
public:
typedef base::OnceCallback<void(int)> TotalWorkCallback;
typedef base::RepeatingCallback<void(int)> WorkedCallback;
typedef base::OnceCallback<void()> DoneCallback;
typedef base::OnceCallback<void(const std::vector<std::string>&)> SearchCallback;
class FileSystemIndexingJob
: public base::RefCountedThreadSafe<FileSystemIndexingJob> {
public:
void Stop();
private:
friend class base::RefCountedThreadSafe<FileSystemIndexingJob>;
friend class DevToolsFileSystemIndexer;
FileSystemIndexingJob(const base::FilePath& file_system_path,
const std::vector<base::FilePath>& excluded_folders,
TotalWorkCallback total_work_callback,
const WorkedCallback& worked_callback,
DoneCallback done_callback);
virtual ~FileSystemIndexingJob();
void Start();
void StopOnImplSequence();
void CollectFilesToIndex();
void IndexFiles();
void ReadFromFile();
void OnRead(base::File::Error error,
const char* data,
int bytes_read);
void FinishFileIndexing(bool success);
void CloseFile();
void ReportWorked();
base::FilePath file_system_path_;
std::vector<base::FilePath> excluded_folders_;
std::vector<base::FilePath> pending_folders_;
TotalWorkCallback total_work_callback_;
WorkedCallback worked_callback_;
DoneCallback done_callback_;
std::unique_ptr<base::FileEnumerator> file_enumerator_;
typedef std::map<base::FilePath, base::Time> FilePathTimesMap;
FilePathTimesMap file_path_times_;
FilePathTimesMap::const_iterator indexing_it_;
base::File current_file_;
int64_t current_file_offset_;
typedef int32_t Trigram;
std::vector<Trigram> current_trigrams_;
// The index in this vector is the trigram id.
std::vector<bool> current_trigrams_set_;
base::TimeTicks last_worked_notification_time_;
int files_indexed_;
bool stopped_;
};
DevToolsFileSystemIndexer();
DevToolsFileSystemIndexer(const DevToolsFileSystemIndexer&) = delete;
DevToolsFileSystemIndexer& operator=(const DevToolsFileSystemIndexer&) =
delete;
// Performs file system indexing for given |file_system_path| and sends
// progress callbacks.
scoped_refptr<FileSystemIndexingJob> IndexPath(
const std::string& file_system_path,
const std::vector<std::string>& excluded_folders,
TotalWorkCallback total_work_callback,
const WorkedCallback& worked_callback,
DoneCallback done_callback);
// Performs trigram search for given |query| in |file_system_path|.
void SearchInPath(const std::string& file_system_path,
const std::string& query,
SearchCallback callback);
private:
friend class base::RefCountedThreadSafe<DevToolsFileSystemIndexer>;
virtual ~DevToolsFileSystemIndexer();
void SearchInPathOnImplSequence(const std::string& file_system_path,
const std::string& query,
SearchCallback callback);
};
#endif // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_FILE_SYSTEM_INDEXER_H_
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