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postfixadmin/model/Shell.php

256 lines
7.0 KiB
PHP

<?php
/**
* Base class for Shells
*
* Long description for file
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
* Copyright 2005-2008, Cake Software Foundation, Inc.
* 1785 E. Sahara Avenue, Suite 490-204
* Las Vegas, Nevada 89104
* Modified for Postfixadmin by Valkum
*
* Copyright 2010
*
* Licensed under The MIT License
* Redistributions of files must retain the above copyright notice.
*
* @filesource
* @copyright Copyright 2005-2008, Cake Software Foundation, Inc.
* @link http://postfixadmin.sourceforge.net/ Postfixadmin on Sourceforge
* @package postfixadmin
* @subpackage -
* @since -
* @version $Revision$
* @modifiedby $LastChangedBy$
* @lastmodified $Date$
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
class Shell {
/**
* An instance of the ShellDispatcher object that loaded this script
*
* @var object
* @access public
*/
public $Dispatch;
/**
* If true, the script will ask for permission to perform actions.
*
* @var boolean
* @access public
*/
public $interactive = true;
/**
* Contains command switches parsed from the command line.
*
* @var array
* @access public
*/
public $params = array();
/**
* Contains arguments parsed from the command line.
*
* @var array
* @access public
*/
public $args = array();
/**
* The file name of the shell that was invoked.
*
* @var string
* @access public
*/
public $shell;
/**
* The class name of the shell that was invoked.
*
* @var string
* @access public
*/
public $className;
/**
* The command called if public methods are available.
*
* @var string
* @access public
*/
public $command;
/**
* The name of the shell in camelized.
*
* @var string
* @access public
*/
public $name;
/**
* Constructs this Shell instance.
*
*/
public function __construct(&$dispatch) {
$vars = array('params', 'args', 'shell', 'shellCommand'=> 'command');
foreach ($vars as $key => $var) {
if (is_string($key)) {
$this->{$var} =& $dispatch->{$key};
} else {
$this->{$var} =& $dispatch->{$var};
}
}
$this->className = get_class($this);
if ($this->name == null) {
$this->name = str_replace(array('shell', 'Shell', 'task', 'Task'), '', $this->className);
}
$this->Dispatch =& $dispatch;
}
/**
* Starts up the the Shell
* allows for checking and configuring prior to command or main execution
* can be overriden in subclasses
*
* @access public
*/
public function startup() {
if (empty($this->params['q'])) {
$this->_welcome();
}
}
/**
* Displays a header for the shell
*
* @access protected
*/
public function _welcome() {
$this->out("\nWelcome to Postfixadmin-CLI v" . $this->Dispatch->version);
$this->hr();
}
/**
* Prompts the user for input, and returns it.
*
* @param string $prompt Prompt text.
* @param mixed $options Array or string of options.
* @param string $default Default input value.
* @return string either the default value, or the user-provided input.
*/
public function in($prompt, $options = null, $default = '') {
if (!$this->interactive) {
return $default;
}
if ($prompt != '') {
$this->out("");
}
$in = $this->Dispatch->getInput($prompt, $options, $default);
if ($options && is_string($options)) {
if (strpos($options, ',')) {
$options = explode(',', $options);
} elseif (strpos($options, '/')) {
$options = explode('/', $options);
} else {
$options = array($options);
}
}
if (is_array($options)) {
while ($in == '' || ($in && (!in_array(strtolower($in), $options) && !in_array(strtoupper($in), $options)) && !in_array($in, $options))) {
$this->err("Invalid input"); # TODO: make translateable
$in = $this->Dispatch->getInput($prompt, $options, $default);
}
}
return $in;
}
/**
* Outputs to the stdout filehandle.
*
* @param string $string String to output.
* @param boolean $newline If true, the outputs gets an added newline.
* @access public
*/
public function out($string, $newline = true) {
if (is_array($string)) {
$str = '';
foreach ($string as $message) {
$str .= $message ."\n";
}
$string = $str;
}
return $this->Dispatch->stdout($string, $newline);
}
/**
* Outputs to the stderr filehandle.
*
* @param string $string Error text to output.
* @access public
*/
public function err($string) {
if (is_array($string)) {
$str = '';
foreach ($string as $message) {
$str .= $message ."\n";
}
$string = $str;
}
return $this->Dispatch->stderr($string."\n");
}
/**
* Outputs a series of minus characters to the standard output, acts as a visual separator.
*
* @param boolean $newline If true, the outputs gets an added newline.
* @access public
*/
public function hr($newline = false) {
if ($newline) {
$this->out("\n");
}
$this->out('---------------------------------------------------------------');
if ($newline) {
$this->out("\n");
}
}
/**
* Displays a formatted error message and exits the application
*
* @param string $title Title of the error message
* @param string $msg Error message
* @access public
*/
public function error($title, $msg) {
$out = "$title\n";
$out .= "$msg\n";
$out .= "\n";
$this->err($out);
$this->_stop(1);
}
/**
* Outputs usage text on the standard output. Implement it in subclasses.
*
* @access public
*/
public function help() {
if ($this->command != null) {
$this->err("Unknown {$this->name} command '$this->command'.\nFor usage, try 'postfixadmin-cli {$this->shell} help'.\n\n");
} else {
$this->Dispatch->help();
}
}
/**
* Stop execution of the current script
*
* @param $status see http://php.net/exit for values
* @return void
* @access public
*/
public function _stop($status = 0) {
exit($status);
}
}