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/***************************************************************************
* CT Cron Header *
* -------------------------------------------------------------------- *
* Copyright (C) 1999, Gary Meyer <gary@meyer.net> *
* -------------------------------------------------------------------- *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef CTCRON_H
#define CTCRON_H
// Do not introduce any Qt or KDE dependencies into the "CT"-prefixed classes.
// I want to be able to reuse these classes with another GUI toolkit. -GM 11/99
#include <vector>
#include <string>
#include <iostream>
#include <qstring.h> // Anarchy! -WABA
class CTException;
class CTTask;
class CTVariable;
struct passwd;
/**
* A user (encapsulation of a single crontab file). Encapsulates
* file i/o, parsing, tokenization, and natural language description.
*/
class CTCron
{
public:
/**
* Constructs the scheduled tasks, environment variables from crontab
* files and obtains some information about the user from the system.
*
* Default is to construct from the user's crontab. Can also be called,
* passing TRUE, to construct from the system crontab. Throws an
* exception if the crontab file can not be found, read, or parsed.
*/
CTCron(bool _syscron = false, std::string _login = "");
/**
* If you already have a struct passwd, use it instead. This
* is never used for the system crontab.
*/
CTCron(const struct passwd * _login = 0L);
/**
* Copy one user's tasks and environement variables to another user.
*/
void operator = (const CTCron& source);
/**
* Parses crontab file format.
*/
friend std::istream& operator >> (std::istream& inputStream, CTCron& cron);
/**
* Tokenizes to crontab file format.
*/
friend std::ostream& operator << (std::ostream& outputStream, const CTCron& cron);
/**
* Apply changes.
*/
void apply();
/**
* Cancel changes.
*/
void cancel();
/**
* Indicates whether or not dirty.
*/
bool dirty();
/**
* Returns the PATH environment variable value. A short cut to iterating
* the tasks vector.
*/
std::string path() const;
/**
* Returns whether an error has occured
*/
bool isError() { return !error.isEmpty(); }
/**
* Return error description
*/
QString errorMessage() { QString r = error; error = QString::null; return r; }
/**
* Indicates whether or not the crontab belongs to the system.
*/
const bool syscron;
/**
* User login.
*/
std::string login;
/**
* User real name.
*/
std::string name;
/**
* User's scheduled tasks.
*/
std::vector<CTTask *> task;
/**
* User's environment variables. Note: These are only environment variables
* found in the user's crontab file and does not include any set in a
* login or shell script such as ".bash_profile".
*/
std::vector<CTVariable *> variable;
/**
* Destructor.
*/
~CTCron();
private:
/**
* Can't copy a user!
*/
CTCron(const CTCron& source);
unsigned int initialTaskCount;
unsigned int initialVariableCount;
QString writeCommand;
QString tmpFileName;
QString error;
protected:
// Initialize member variables from the struct passwd.
bool initFromPasswd(const struct passwd *);
};
typedef std::vector<CTTask*>::iterator CTTaskIterator;
typedef std::vector<CTVariable*>::iterator CTVariableIterator;
#endif // CTCRON_H
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