1: <?php
 2: 
 3: /**
 4:  * This file is part of the Nette Tester.
 5:  * Copyright (c) 2009 David Grudl (http://davidgrudl.com)
 6:  */
 7: 
 8: namespace Tester\CodeCoverage;
 9: 
10: 
11: /**
12:  * Code coverage collector.
13:  *
14:  * @author     David Grudl
15:  */
16: class Collector
17: {
18:     /** @var string */
19:     static public $file;
20: 
21: 
22:     /**
23:      * Starts gathering the information for code coverage.
24:      * @param  string
25:      * @return void
26:      */
27:     public static function start($file)
28:     {
29:         self::$file = $file;
30:         xdebug_start_code_coverage(XDEBUG_CC_UNUSED | XDEBUG_CC_DEAD_CODE);
31:         register_shutdown_function(function() {
32:             register_shutdown_function(array(__CLASS__, 'save'));
33:         });
34:     }
35: 
36: 
37:     /**
38:      * Saves information about code coverage. Do not call directly.
39:      * @return void
40:      * @internal
41:      */
42:     public static function save()
43:     {
44:         $f = fopen(self::$file, 'a+');
45:         flock($f, LOCK_EX);
46:         fseek($f, 0);
47:         $coverage = @unserialize(stream_get_contents($f));
48: 
49:         foreach (xdebug_get_code_coverage() as $filename => $lines) {
50:             foreach ($lines as $num => $val) {
51:                 if (empty($coverage[$filename][$num]) || $val > 0) {
52:                     $coverage[$filename][$num] = $val; // -1 => untested; -2 => dead code
53:                 }
54:             }
55:         }
56: 
57:         ftruncate($f, 0);
58:         fwrite($f, serialize($coverage));
59:         fclose($f);
60:     }
61: 
62: }
63: