1: <?php
  2: /**
  3:  * ConsoleInputOption file
  4:  *
  5:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  6:  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  7:  *
  8:  * Licensed under The MIT License
  9:  * For full copyright and license information, please see the LICENSE.txt
 10:  * Redistributions of files must retain the above copyright notice.
 11:  *
 12:  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 13:  * @link          http://cakephp.org CakePHP(tm) Project
 14:  * @since         CakePHP(tm) v 2.0
 15:  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 16:  */
 17: 
 18: /**
 19:  * An object to represent a single option used in the command line.
 20:  * ConsoleOptionParser creates these when you use addOption()
 21:  *
 22:  * @see ConsoleOptionParser::addOption()
 23:  * @package       Cake.Console
 24:  */
 25: class ConsoleInputOption {
 26: 
 27: /**
 28:  * Name of the option
 29:  *
 30:  * @var string
 31:  */
 32:     protected $_name;
 33: 
 34: /**
 35:  * Short (1 character) alias for the option.
 36:  *
 37:  * @var string
 38:  */
 39:     protected $_short;
 40: 
 41: /**
 42:  * Help text for the option.
 43:  *
 44:  * @var string
 45:  */
 46:     protected $_help;
 47: 
 48: /**
 49:  * Is the option a boolean option. Boolean options do not consume a parameter.
 50:  *
 51:  * @var bool
 52:  */
 53:     protected $_boolean;
 54: 
 55: /**
 56:  * Default value for the option
 57:  *
 58:  * @var mixed
 59:  */
 60:     protected $_default;
 61: 
 62: /**
 63:  * An array of choices for the option.
 64:  *
 65:  * @var array
 66:  */
 67:     protected $_choices;
 68: 
 69: /**
 70:  * Make a new Input Option
 71:  *
 72:  * @param string|array $name The long name of the option, or an array with all the properties.
 73:  * @param string $short The short alias for this option
 74:  * @param string $help The help text for this option
 75:  * @param bool $boolean Whether this option is a boolean option. Boolean options don't consume extra tokens
 76:  * @param string $default The default value for this option.
 77:  * @param array $choices Valid choices for this option.
 78:  * @throws ConsoleException
 79:  */
 80:     public function __construct($name, $short = null, $help = '', $boolean = false, $default = '', $choices = array()) {
 81:         if (is_array($name) && isset($name['name'])) {
 82:             foreach ($name as $key => $value) {
 83:                 $this->{'_' . $key} = $value;
 84:             }
 85:         } else {
 86:             $this->_name = $name;
 87:             $this->_short = $short;
 88:             $this->_help = $help;
 89:             $this->_boolean = $boolean;
 90:             $this->_default = $default;
 91:             $this->_choices = $choices;
 92:         }
 93:         if (strlen($this->_short) > 1) {
 94:             throw new ConsoleException(
 95:                 __d('cake_console', 'Short option "%s" is invalid, short options must be one letter.', $this->_short)
 96:             );
 97:         }
 98:     }
 99: 
100: /**
101:  * Get the value of the name attribute.
102:  *
103:  * @return string Value of this->_name.
104:  */
105:     public function name() {
106:         return $this->_name;
107:     }
108: 
109: /**
110:  * Get the value of the short attribute.
111:  *
112:  * @return string Value of this->_short.
113:  */
114:     public function short() {
115:         return $this->_short;
116:     }
117: 
118: /**
119:  * Generate the help for this this option.
120:  *
121:  * @param int $width The width to make the name of the option.
122:  * @return string
123:  */
124:     public function help($width = 0) {
125:         $default = $short = '';
126:         if (!empty($this->_default) && $this->_default !== true) {
127:             $default = __d('cake_console', ' <comment>(default: %s)</comment>', $this->_default);
128:         }
129:         if (!empty($this->_choices)) {
130:             $default .= __d('cake_console', ' <comment>(choices: %s)</comment>', implode('|', $this->_choices));
131:         }
132:         if (!empty($this->_short)) {
133:             $short = ', -' . $this->_short;
134:         }
135:         $name = sprintf('--%s%s', $this->_name, $short);
136:         if (strlen($name) < $width) {
137:             $name = str_pad($name, $width, ' ');
138:         }
139:         return sprintf('%s%s%s', $name, $this->_help, $default);
140:     }
141: 
142: /**
143:  * Get the usage value for this option
144:  *
145:  * @return string
146:  */
147:     public function usage() {
148:         $name = empty($this->_short) ? '--' . $this->_name : '-' . $this->_short;
149:         $default = '';
150:         if (!empty($this->_default) && $this->_default !== true) {
151:             $default = ' ' . $this->_default;
152:         }
153:         if (!empty($this->_choices)) {
154:             $default = ' ' . implode('|', $this->_choices);
155:         }
156:         return sprintf('[%s%s]', $name, $default);
157:     }
158: 
159: /**
160:  * Get the default value for this option
161:  *
162:  * @return mixed
163:  */
164:     public function defaultValue() {
165:         return $this->_default;
166:     }
167: 
168: /**
169:  * Check if this option is a boolean option
170:  *
171:  * @return bool
172:  */
173:     public function isBoolean() {
174:         return (bool)$this->_boolean;
175:     }
176: 
177: /**
178:  * Check that a value is a valid choice for this option.
179:  *
180:  * @param string $value The choice to validate.
181:  * @return bool
182:  * @throws ConsoleException
183:  */
184:     public function validChoice($value) {
185:         if (empty($this->_choices)) {
186:             return true;
187:         }
188:         if (!in_array($value, $this->_choices)) {
189:             throw new ConsoleException(
190:                 __d('cake_console', '"%s" is not a valid value for --%s. Please use one of "%s"',
191:                 $value, $this->_name, implode(', ', $this->_choices)
192:             ));
193:         }
194:         return true;
195:     }
196: 
197: /**
198:  * Append the option's xml into the parent.
199:  *
200:  * @param SimpleXmlElement $parent The parent element.
201:  * @return SimpleXmlElement The parent with this option appended.
202:  */
203:     public function xml(SimpleXmlElement $parent) {
204:         $option = $parent->addChild('option');
205:         $option->addAttribute('name', '--' . $this->_name);
206:         $short = '';
207:         if (strlen($this->_short)) {
208:             $short = $this->_short;
209:         }
210:         $option->addAttribute('short', '-' . $short);
211:         $option->addAttribute('boolean', $this->_boolean);
212:         $option->addChild('default', $this->_default);
213:         $choices = $option->addChild('choices');
214:         foreach ($this->_choices as $valid) {
215:             $choices->addChild('choice', $valid);
216:         }
217:         return $parent;
218:     }
219: 
220: }
221: