<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Application
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

jimport('joomla.application.input');

/**
 * Joomla! Input CLI Class
 *
 * @package     Joomla.Platform
 * @subpackage  Application
 * @since       11.1
 */
class JInputCLI extends JInput
{
    /**
     * @var    string  The executable that was called to urn the CLI script.
     * @since  11.1
     */
    public $executable;

    /**
     * @var    array  The additional arguments passed to the script that are not associated
     *                with a specific argument name.
     * @since  11.1
     */
    public $args = array();

    /**
     * Constructor.
     *
     * @param   array  $source   Source data (Optional, default is $_REQUEST)
     * @param   array  $options  Array of configuration parameters (Optional)
     *
     * @return  void
     *
     * @since   11.1
     */
    public function __construct($source = null, $options = array ())
    {
        if (isset ($options['filter'])) {
            $this->filter = $options['filter'];
        } else {
            $this->filter = JFilterInput::getInstance();
        }

        // Get the command line options
        $this->parseArguments();

        // Set the options for the class.
        $this->options = $options;
    }

    /**
     * Initialise the options and arguments
     *
     * @return  void
     *
     * @since   11.1
     */
    protected function parseArguments()
    {
        // Get the list of argument values from the environment.
        $args = $_SERVER['argv'];

        // Set the path used for program execution and remove it form the program arguments.
        $this->executable = array_shift($args);

        // We use a for loop because in some cases we need to look ahead.
        for ($i = 0; $i < count($args); $i++)
        {
            // Get the current argument to analyze.
            $arg = $args[$i];

            // First let's tackle the long argument case.  eg. --foo
            if (strlen($arg) > 2 && substr($arg, 0, 2) == '--') {

                // Attempt to split the thing over equals so we can get the key/value pair if an = was used.
                $arg = substr($arg, 2);
                $parts = explode('=', $arg);
                $this->data[$parts[0]] = true;

                // Does not have an =, so let's look ahead to the next argument for the value.
                if (count($parts) == 1 && isset ($args[$i+1]) && preg_match('/^--?.+/', $args[$i+1]) == 0) {
                    $this->data[$parts[0]] = $args[$i+1];

                    // Since we used the next argument, increment the counter so we don't use it again.
                    $i++;
                }
                // We have an equals sign so take the second "part" of the argument as the value.
                elseif (count($parts) == 2) {
                    $this->data[$parts[0]] = $parts[1];
                }
            }

            // Next let's see if we are dealing with a "bunch" of short arguments.  eg. -abc
            elseif (strlen($arg) > 2 && $arg[0] == '-') {

                // For each of these arguments set the value to TRUE since the flag has been set.
                for ($j = 1; $j < strlen($arg); $j++)
                {
                    $this->data[$arg[$j]] = true;
                }
            }

            // OK, so it isn't a long argument or bunch of short ones, so let's look and see if it is a single
            // short argument.  eg. -h
            elseif (strlen($arg) == 2 && $arg[0] == '-') {

                // Go ahead and set the value to TRUE and if we find a value later we'll overwrite it.
                $this->data[$arg[1]] = true;

                // Let's look ahead to see if the next argument is a "value".  If it is, use it for this value.
                if (isset ($args[$i+1]) && preg_match('/^--?.+/', $args[$i+1]) == 0) {
                    $this->data[$arg[1]] = $args[$i+1];

                    // Since we used the next argument, increment the counter so we don't use it again.
                    $i++;
                }
            }

            // Last but not least, we don't have a key/value based argument so just add it to the arguments list.
            else {
                $this->args[] = $arg;
            }
        }
    }
}