--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/pear/console_commandline/Console/CommandLine/Argument.php	Thu Jan 04 15:50:29 2018 -0500
@@ -0,0 +1,102 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * This file is part of the PEAR Console_CommandLine package.
+ *
+ * PHP version 5
+ *
+ * LICENSE: This source file is subject to the MIT license that is available
+ * through the world-wide-web at the following URI:
+ * http://opensource.org/licenses/mit-license.php
+ *
+ * @category  Console
+ * @package   Console_CommandLine
+ * @author    David JEAN LOUIS <izimobil@gmail.com>
+ * @copyright 2007 David JEAN LOUIS
+ * @license   http://opensource.org/licenses/mit-license.php MIT License
+ * @version   CVS: $Id$
+ * @link      http://pear.php.net/package/Console_CommandLine
+ * @since     File available since release 0.1.0
+ * @filesource
+ */
+
+/**
+ * Include base element class.
+ */
+require_once 'Console/CommandLine/Element.php';
+
+/**
+ * Class that represent a command line argument.
+ *
+ * @category  Console
+ * @package   Console_CommandLine
+ * @author    David JEAN LOUIS <izimobil@gmail.com>
+ * @copyright 2007 David JEAN LOUIS
+ * @license   http://opensource.org/licenses/mit-license.php MIT License
+ * @version   Release: @package_version@
+ * @link      http://pear.php.net/package/Console_CommandLine
+ * @since     Class available since release 0.1.0
+ */
+class Console_CommandLine_Argument extends Console_CommandLine_Element
+{
+    // Public properties {{{
+
+    /**
+     * Setting this to true will tell the parser that the argument expects more
+     * than one argument and that argument values should be stored in an array.
+     *
+     * @var boolean $multiple Whether the argument expects multiple values
+     */
+    public $multiple = false;
+
+    /**
+     * Setting this to true will tell the parser that the argument is optional
+     * and can be ommited.
+     * Note that it is not a good practice to make arguments optional, it is
+     * the role of the options to be optional, by essence.
+     *
+     * @var boolean $optional Whether the argument is optional or not.
+     */
+    public $optional = false;
+
+    /**
+     * An array of possible values for the argument.
+     *
+     * @var array $choices Valid choices for the argument
+     */
+    public $choices = array();
+
+    // }}}
+    // validate() {{{
+
+    /**
+     * Validates the argument instance.
+     *
+     * @return void
+     * @throws Console_CommandLine_Exception
+     * @todo use exceptions
+     */
+    public function validate()
+    {
+        // check if the argument name is valid
+        if (!preg_match('/^[a-zA-Z_\x7f-\xff]+[a-zA-Z0-9_\x7f-\xff]*$/',
+            $this->name)) {
+            Console_CommandLine::triggerError(
+                'argument_bad_name',
+                E_USER_ERROR,
+                array('{$name}' => $this->name)
+            );
+        }
+        if (!$this->optional && $this->default !== null) {
+            Console_CommandLine::triggerError(
+                'argument_no_default',
+                E_USER_ERROR
+            );
+        }
+        parent::validate();
+    }
+
+    // }}}
+}