1: <?php
  2: /**
  3:  * ConsoleArgumentOption file
  4:  *
  5:  * PHP 5
  6:  *
  7:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  8:  * Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
  9:  *
 10:  * Licensed under The MIT License
 11:  * Redistributions of files must retain the above copyright notice.
 12:  *
 13:  * @copyright     Copyright 2005-2012, Cake Software Foundation, Inc. (http://cakefoundation.org)
 14:  * @link          http://cakephp.org CakePHP(tm) Project
 15:  * @since         CakePHP(tm) v 2.0
 16:  * @license       MIT License (http://www.opensource.org/licenses/mit-license.php)
 17:  */
 18: /**
 19:  * An object to represent a single argument used in the command line.
 20:  * ConsoleOptionParser creates these when you use addArgument()
 21:  *
 22:  * @see ConsoleOptionParser::addArgument()
 23:  * @package       Cake.Console
 24:  */
 25: class ConsoleInputArgument {
 26: 
 27: /**
 28:  * Name of the argument.
 29:  *
 30:  * @var string
 31:  */
 32:     protected $_name;
 33: 
 34: /**
 35:  * Help string
 36:  *
 37:  * @var string
 38:  */
 39:     protected $_help;
 40: 
 41: /**
 42:  * Is this option required?
 43:  *
 44:  * @var boolean
 45:  */
 46:     protected $_required;
 47: 
 48: /**
 49:  * An array of valid choices for this argument.
 50:  *
 51:  * @var array
 52:  */
 53:     protected $_choices;
 54: 
 55: /**
 56:  * Make a new Input Argument
 57:  *
 58:  * @param string|array $name The long name of the option, or an array with all the properties.
 59:  * @param string $help The help text for this option
 60:  * @param boolean $required Whether this argument is required. Missing required args will trigger exceptions
 61:  * @param array $choices Valid choices for this option.
 62:  */
 63:     public function __construct($name, $help = '', $required = false, $choices = array()) {
 64:         if (is_array($name) && isset($name['name'])) {
 65:             foreach ($name as $key => $value) {
 66:                 $this->{'_' . $key} = $value;
 67:             }
 68:         } else {
 69:             $this->_name = $name;
 70:             $this->_help = $help;
 71:             $this->_required = $required;
 72:             $this->_choices = $choices;
 73:         }
 74:     }
 75: 
 76: /**
 77:  * Get the value of the name attribute.
 78:  *
 79:  * @return string Value of this->_name.
 80:  */
 81:     public function name() {
 82:         return $this->_name;
 83:     }
 84: 
 85: /**
 86:  * Generate the help for this argument.
 87:  *
 88:  * @param integer $width The width to make the name of the option.
 89:  * @return string
 90:  */
 91:     public function help($width = 0) {
 92:         $name = $this->_name;
 93:         if (strlen($name) < $width) {
 94:             $name = str_pad($name, $width, ' ');
 95:         }
 96:         $optional = '';
 97:         if (!$this->isRequired()) {
 98:             $optional = __d('cake_console', ' <comment>(optional)</comment>');
 99:         }
100:         if (!empty($this->_choices)) {
101:             $optional .= __d('cake_console', ' <comment>(choices: %s)</comment>', implode('|', $this->_choices));
102:         }
103:         return sprintf('%s%s%s', $name, $this->_help, $optional);
104:     }
105: 
106: /**
107:  * Get the usage value for this argument
108:  *
109:  * @return string
110:  */
111:     public function usage() {
112:         $name = $this->_name;
113:         if (!empty($this->_choices)) {
114:             $name = implode('|', $this->_choices);
115:         }
116:         $name = '<' . $name . '>';
117:         if (!$this->isRequired()) {
118:             $name = '[' . $name . ']';
119:         }
120:         return $name;
121:     }
122: 
123: /**
124:  * Check if this argument is a required argument
125:  *
126:  * @return boolean
127:  */
128:     public function isRequired() {
129:         return (bool)$this->_required;
130:     }
131: 
132: /**
133:  * Check that $value is a valid choice for this argument.
134:  *
135:  * @param string $value
136:  * @return boolean
137:  * @throws ConsoleException
138:  */
139:     public function validChoice($value) {
140:         if (empty($this->_choices)) {
141:             return true;
142:         }
143:         if (!in_array($value, $this->_choices)) {
144:             throw new ConsoleException(
145:                 __d('cake_console', '"%s" is not a valid value for %s. Please use one of "%s"',
146:                 $value, $this->_name, implode(', ', $this->_choices)
147:             ));
148:         }
149:         return true;
150:     }
151: 
152: /**
153:  * Append this arguments XML representation to the passed in SimpleXml object.
154:  *
155:  * @param SimpleXmlElement $parent The parent element.
156:  * @return SimpleXmlElement The parent with this argument appended.
157:  */
158:     public function xml(SimpleXmlElement $parent) {
159:         $option = $parent->addChild('argument');
160:         $option->addAttribute('name', $this->_name);
161:         $option->addAttribute('help', $this->_help);
162:         $option->addAttribute('required', $this->isRequired());
163:         $choices = $option->addChild('choices');
164:         foreach ($this->_choices as $valid) {
165:             $choices->addChild('choice', $valid);
166:         }
167:         return $parent;
168:     }
169: 
170: }
171: