[Process] added Process::getExitCodeText() (closes #2818)

src/Symfony/Component/Process/Process.php

@@ -35,6 +35,54 @@ class Process
     private $stdout;
     private $stderr;
 
+    /**
+     * Exit codes translation table.
+     *
+     * @var array
+     */
+    static public $exitCodes = array(
+        0 => 'OK',
+        1 => 'General error',
+        2 => 'Misuse of shell builtins',
+
+        126 => 'Invoked command cannot execute',
+        127 => 'Command not found',
+        128 => 'Invalid exit argument',
+
+        // signals
+        129 => 'Hangup',
+        130 => 'Interrupt',
+        131 => 'Quit and dump core',
+        132 => 'Illegal instruction',
+        133 => 'Trace/breakpoint trap',
+        134 => 'Process aborted',
+        135 => 'Bus error: "access to undefined portion of memory object"',
+        136 => 'Floating point exception: "erroneous arithmetic operation"',
+        137 => 'Kill (terminate immediately)',
+        138 => 'User-defined 1',
+        139 => 'Segmentation violation',
+        140 => 'User-defined 2',
+        141 => 'Write to pipe with no one reading',
+        142 => 'Signal raised by alarm',
+        143 => 'Termination (request to terminate)',
+        // 144 - not defined
+        145 => 'Child process terminated, stopped (or continued*)',
+        146 => 'Continue if stopped',
+        147 => 'Stop executing temporarily',
+        148 => 'Terminal stop signal',
+        149 => 'Background process attempting to read from tty ("in")',
+        150 => 'Background process attempting to write to tty ("out")',
+        151 => 'Urgent data available on socket',
+        152 => 'CPU time limit exceeded',
+        153 => 'File size limit exceeded',
+        154 => 'Signal raised by timer counting virtual time: "virtual timer expired"',
+        155 => 'Profiling timer expired',
+        // 156 - not defined
+        157 => 'Pollable event',
+        // 158 - not defined
+        159 => 'Bad syscall',
+    );
+
     /**
      * Constructor.
      *
@@ -230,6 +278,22 @@ class Process
         return $this->exitcode;
     }
 
+    /**
+     * Returns a string representation for the exit code returned by the process.
+     *
+     * This method relies on the Unix exit code status standardization
+     * and might not be relevant for other operating systems.
+     *
+     * @return string A string representation for the exit status code
+     *
+     * @see http://tldp.org/LDP/abs/html/exitcodes.html
+     * @see http://en.wikipedia.org/wiki/Unix_signal
+     */
+    public function getExitCodeText()
+    {
+        return isset(self::$exitCodes[$this->exitcode]) ? self::$exitCodes[$this->exitcode] : 'Unknown error';
+    }
+
     /**
      * Checks if the process ended successfully.
      *

tests/Symfony/Tests/Component/Process/ProcessTest.php

@@ -68,6 +68,17 @@ class ProcessTest extends \PHPUnit_Framework_TestCase
         $this->assertSame(0, $p->getExitCode());
     }
 
+    public function testExitCodeText()
+    {
+        $process = new Process('');
+        $r = new \ReflectionObject($process);
+        $p = $r->getProperty('exitcode');
+        $p->setAccessible(true);
+
+        $p->setValue($process, 2);
+        $this->assertEquals('Misuse of shell builtins', $process->getExitCodeText());
+    }
+
     public function responsesCodeProvider()
     {
         return array(