1: <?php
 2: namespace Contrib\Component\System;
 3: 
 4: /**
 5:  * System command.
 6:  *
 7:  * @author Kitamura Satoshi <with.no.parachute@gmail.com>
 8:  */
 9: abstract class SystemCommand
10: {
11:     /**
12:      * Command name or path.
13:      *
14:      * @var string
15:      */
16:     protected $commandPath;
17: 
18:     // API
19: 
20:     /**
21:      * Execute command.
22:      *
23:      * @return array
24:      */
25:     public function execute()
26:     {
27:         $command = $this->createCommand();
28: 
29:         return $this->executeCommand($command);
30:     }
31: 
32:     // internal method
33: 
34:     /**
35:      * Execute command.
36:      *
37:      * @param  string            $command
38:      * @return array
39:      * @throws \RuntimeException
40:      */
41:     protected function executeCommand($command)
42:     {
43:         exec($command, $result, $returnValue);
44: 
45:         if ($returnValue === 0) {
46:             return $result;
47:         }
48: 
49:         throw new \RuntimeException(sprintf('Failed to execute command: %s', $command), $returnValue);
50:     }
51: 
52:     /**
53:      * Create command.
54:      *
55:      * @param  string $args Command arguments.
56:      * @return string
57:      */
58:     protected function createCommand($args = null)
59:     {
60:         if ($args === null) {
61:             return $this->commandPath;
62:         }
63: 
64:         // escapeshellarg($args) ?
65:         return sprintf('%s %s', $this->commandPath, $args);
66:     }
67: 
68:     // accessor
69: 
70:     /**
71:      * Set command path.
72:      *
73:      * @param  string $commandPath Command name or path.
74:      * @return void
75:      */
76:     public function setCommandPath($commandPath)
77:     {
78:         $this->commandPath = $commandPath;
79:     }
80: 
81:     /**
82:      * Return command path.
83:      *
84:      * @return string
85:      */
86:     public function getCommandPath()
87:     {
88:         return $this->commandPath;
89:     }
90: }
91: