ClickHouse/base/poco/Foundation/include/Poco/TemporaryFile.h

//
// TemporaryFile.h
//
// Library: Foundation
// Package: Filesystem
// Module:  TemporaryFile
//
// Definition of the TemporaryFile class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier:	BSL-1.0
//


#ifndef Foundation_TemporaryFile_INCLUDED
#define Foundation_TemporaryFile_INCLUDED


#include "Poco/File.h"
#include "Poco/Foundation.h"


namespace Poco
{


class Foundation_API TemporaryFile : public File
/// The TemporaryFile class helps with the handling
/// of temporary files.
/// A unique name for the temporary file is
/// automatically chosen and the file is placed
/// in the directory reserved for temporary
/// files (see Path::temp()).
/// Obtain the path by calling the path() method
/// (inherited from File).
///
/// The TemporaryFile class does not actually
/// create the file - this is up to the application.
/// The class does, however, delete the temporary
/// file - either in the destructor, or immediately
/// before the application terminates.
{
public:
    TemporaryFile();
    /// Creates the TemporaryFile.

    TemporaryFile(const std::string & tempDir);
    /// Creates the TemporaryFile using the given directory.

    ~TemporaryFile();
    /// Destroys the TemporaryFile and
    /// deletes the corresponding file on
    /// disk unless keep() or keepUntilExit()
    /// has been called.

    void keep();
    /// Disables automatic deletion of the file in
    /// the destructor.

    void keepUntilExit();
    /// Disables automatic deletion of the file in
    /// the destructor, but registers the file
    /// for deletion at process termination.

    static void registerForDeletion(const std::string & path);
    /// Registers the given file for deletion
    /// at process termination.

    static std::string tempName(const std::string & tempDir = "");
    /// Returns a unique path name for a temporary
    /// file in the system's scratch directory (see Path::temp())
    /// if tempDir is empty or in the directory specified in tempDir
    /// otherwise.

private:
    bool _keep;
};


} // namespace Poco


#endif // Foundation_TemporaryFile_INCLUDED