Process.h

Go to the documentation of this file.

/* Process.h
 *
 * ------------------------------------------------------------------------------
 * Copyright (c) 2008 Novell, Inc. All Rights Reserved.
 *
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of version 2 of the GNU General Public License as published by the
 * Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, contact Novell, Inc.
 *
 * To contact Novell about this file by physical or electronic mail, you may find
 * current contact information at www.novell.com.
 * ------------------------------------------------------------------------------
 *
 * Class Process
 *
 * Authors: Ladislav Slezák <lslezak@novell.com>
 *
 * $Id: Process.h 57029 2009-04-29 11:04:19Z lslezak $
 */

#ifndef Process_h
#define Process_h

#include <y2util/ExternalProgram.h>

class Process: public ExternalProgram
{

private:

    std::string stdout_buffer;  // buffer for stdout
    std::string stderr_buffer;  // buffer for stderr

    FILE *stderr_output;

private:

    // disable copy ctor and operator=
    Process(const Process&);
    Process& operator=(const Process&);

    // create a pipe for stderr, return the end for writing
    int create_stderr_pipes();

    // a helper function
    std::string GetLineFromBuffer(std::string &buffer);

    // a helper function
    // reads the new stdout lines and adds them to stdout buffer
    void BufferNewStdoutLines();

    // checks emptines of the stdout buffer
    bool IsAnyLineInBuffer(const std::string &buffer);

public:

    Process(const std::string &commandline, bool use_pty = false, bool default_locale = false, bool pty_trans = true)
        : ExternalProgram(commandline, Stderr_To_FileDesc,
            use_pty, create_stderr_pipes(), default_locale, "", pty_trans), stderr_output(NULL)
    {}

    Process(const char *const *argv, const Environment &environment, bool use_pty = false, bool default_locale = false, bool pty_trans = true)
        : ExternalProgram(argv, environment, Stderr_To_FileDesc,
            use_pty, create_stderr_pipes(), default_locale, "", pty_trans)
    {}


    ~Process();

    bool kill(int sig);

    bool kill();

    std::string readLine();

    std::string read();

    std::string readErrLine();

    std::string readErr();

    int closeAll();

    void readStdoutToBuffer();

    void readStderrToBuffer();

    bool anyLineInStdout();

    FILE* errorFile();

};

#endif // Process_h