All empty double-quoted strings replaced with single-quotes
[core.git] / inc / classes / main / resolver / command / class_BaseCommandResolver.php
1 <?php
2 /**
3  * A generic command resolver class
4  *
5  * @author              Roland Haeder <webmaster@ship-simu.org>
6  * @version             0.0.0
7  * @copyright   Copyright (c) 2007 - 2009 Roland Haeder, this is free software
8  * @license             GNU GPL 3.0 or any newer version
9  * @link                http://www.ship-simu.org
10  *
11  * This program is free software: you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published by
13  * the Free Software Foundation, either version 3 of the License, or
14  * (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program. If not, see <http://www.gnu.org/licenses/>.
23  */
24 class BaseCommandResolver extends BaseResolver {
25         /**
26          * Prefix for local, remote or other resolver
27          */
28         private $commandPrefix = '';
29
30         /**
31          * Validated command name
32          */
33         private $commandName = '';
34
35         /**
36          * Protected constructor
37          *
38          * @param       $className      Name of the class
39          * @return      void
40          */
41         protected function __construct ($className) {
42                 // Call parent constructor
43                 parent::__construct($className);
44         }
45
46         /**
47          * Setter for command prefix
48          *
49          * @param       $commandPrefix  Last validated commandPrefix
50          * @return      void
51          */
52         protected final function setCommandPrefix ($commandPrefix) {
53                 $this->commandPrefix = $commandPrefix;
54         }
55
56         /**
57          * Setter for command name
58          *
59          * @param       $commandName    Last validated command name
60          * @return      void
61          */
62         protected final function setCommandName ($commandName) {
63                 $this->commandName = $commandName;
64         }
65
66         /**
67          * Getter for command name
68          *
69          * @return      $commandName    Last validated command name
70          */
71         protected final function getCommandName () {
72                 return $this->commandName;
73         }
74
75         /**
76          * Checks wether the given command is valid
77          *
78          * @param       $commandName    The default command we shall execute
79          * @return      $isValid                Wether the given command is valid
80          * @throws      EmptyVariableException  Thrown if given command is not set
81          */
82         public function isCommandValid ($commandName) {
83                 // By default nothing shall be valid
84                 $isValid = false;
85
86                 // Is a command set?
87                 if (empty($commandName)) {
88                         // Then thrown an exception here
89                         throw new EmptyVariableException(array($this, 'commandName'), self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
90                 }
91
92                 // Now, let us create the full name of the command class
93                 $this->setClassName(sprintf("%s%sCommand",
94                         $this->commandPrefix,
95                         $this->convertToClassName($commandName)
96                 ));
97
98                 // Is this class already loaded?
99                 if (class_exists($this->getClassName())) {
100                         // This class does exist. :-)
101                         $isValid = true;
102                 } // END - if
103
104                 // Set command name
105                 $this->setCommandName($commandName);
106
107                 // Return the result
108                 return $isValid;
109         }
110 }
111
112 // [EOF]
113 ?>