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1 <?php |
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2 |
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3 /* |
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4 * This file is part of the Symfony package. |
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5 * |
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6 * (c) Fabien Potencier <fabien@symfony.com> |
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7 * |
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8 * For the full copyright and license information, please view the LICENSE |
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9 * file that was distributed with this source code. |
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10 */ |
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11 |
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12 namespace Symfony\Component\HttpKernel\Debug; |
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13 |
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14 use Symfony\Component\HttpFoundation\Response; |
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15 use Symfony\Component\HttpKernel\Exception\FlattenException; |
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16 use Symfony\Component\HttpKernel\Exception\HttpExceptionInterface; |
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17 |
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18 /** |
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19 * ExceptionHandler converts an exception to a Response object. |
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20 * |
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21 * It is mostly useful in debug mode to replace the default PHP/XDebug |
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22 * output with something prettier and more useful. |
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23 * |
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24 * As this class is mainly used during Kernel boot, where nothing is yet |
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25 * available, the Response content is always HTML. |
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26 * |
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27 * @author Fabien Potencier <fabien@symfony.com> |
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28 */ |
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29 class ExceptionHandler |
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30 { |
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31 private $debug; |
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32 |
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33 public function __construct($debug = true) |
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34 { |
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35 $this->debug = $debug; |
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36 } |
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37 |
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38 /** |
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39 * Register the exception handler. |
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40 * |
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41 * @return The registered exception handler |
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42 */ |
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43 static public function register($debug = true) |
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44 { |
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45 $handler = new static($debug); |
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46 |
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47 set_exception_handler(array($handler, 'handle')); |
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48 |
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49 return $handler; |
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50 } |
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51 |
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52 /** |
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53 * Sends a Response for the given Exception. |
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54 * |
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55 * @param \Exception $exception An \Exception instance |
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56 */ |
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57 public function handle(\Exception $exception) |
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58 { |
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59 $this->createResponse($exception)->send(); |
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60 } |
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61 |
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62 /** |
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63 * Creates the error Response associated with the given Exception. |
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64 * |
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65 * @param \Exception $exception An \Exception instance |
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66 * |
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67 * @return Response A Response instance |
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68 */ |
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69 public function createResponse(\Exception $exception) |
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70 { |
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71 $content = ''; |
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72 $title = ''; |
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73 try { |
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74 $code = $exception instanceof HttpExceptionInterface ? $exception->getStatusCode() : 500; |
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75 $exception = FlattenException::create($exception); |
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76 |
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77 switch($code) { |
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78 case 404: |
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79 $title = 'Sorry, the page you are looking for could not be found.'; |
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80 break; |
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81 default: |
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82 $title = 'Whoops, looks like something went wrong.'; |
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83 } |
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84 |
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85 if ($this->debug) { |
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86 $content = $this->getContent($exception); |
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87 } |
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88 } catch (\Exception $e) { |
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89 // something nasty happened and we cannot throw an exception here anymore |
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90 if ($this->debug) { |
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91 $title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($exception), $exception->getMessage()); |
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92 } else { |
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93 $title = 'Whoops, looks like something went wrong.'; |
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94 } |
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95 } |
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96 |
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97 return new Response($this->decorate($content, $title), $code); |
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98 } |
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99 |
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100 private function getContent($exception) |
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101 { |
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102 $message = nl2br($exception->getMessage()); |
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103 $class = $this->abbrClass($exception->getClass()); |
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104 $count = count($exception->getAllPrevious()); |
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105 $content = ''; |
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106 foreach ($exception->toArray() as $position => $e) { |
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107 $ind = $count - $position + 1; |
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108 $total = $count + 1; |
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109 $class = $this->abbrClass($e['class']); |
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110 $message = nl2br($e['message']); |
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111 $content .= "<div class=\"block_exception clear_fix\"><h2><span>$ind/$total</span> $class: $message</h2></div><div class=\"block\"><ol class=\"traces list_exception\">"; |
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112 foreach ($e['trace'] as $i => $trace) { |
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113 $content .= '<li>'; |
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114 if ($trace['function']) { |
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115 $content .= sprintf('at %s%s%s()', $this->abbrClass($trace['class']), $trace['type'], $trace['function']); |
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116 } |
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117 if (isset($trace['file']) && isset($trace['line'])) { |
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118 $content .= sprintf(' in %s line %s', $trace['file'], $trace['line']); |
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119 } |
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120 $content .= '</li>'; |
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121 } |
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122 |
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123 $content .= '</ol></div>'; |
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124 } |
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125 |
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126 return $content; |
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127 } |
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128 |
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129 private function decorate($content, $title) |
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130 { |
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131 return <<<EOF |
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132 <!DOCTYPE html> |
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133 <html> |
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134 <head> |
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135 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> |
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136 <meta name="robots" content="noindex,nofollow" /> |
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137 <title>{$title}</title> |
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138 <style> |
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139 /* Copyright (c) 2010, Yahoo! Inc. All rights reserved. Code licensed under the BSD License: http://developer.yahoo.com/yui/license.html */ |
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140 html{color:#000;background:#FFF;}body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,textarea,p,blockquote,th,td{margin:0;padding:0;}table{border-collapse:collapse;border-spacing:0;}fieldset,img{border:0;}address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}li{list-style:none;}caption,th{text-align:left;}h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}q:before,q:after{content:'';}abbr,acronym{border:0;font-variant:normal;}sup{vertical-align:text-top;}sub{vertical-align:text-bottom;}input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;}input,textarea,select{*font-size:100%;}legend{color:#000;} |
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141 |
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142 html { background: #eee; padding: 10px } |
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143 body { font: 11px Verdana, Arial, sans-serif; color: #333 } |
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144 img { border: 0; } |
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145 .clear { clear:both; height:0; font-size:0; line-height:0; } |
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146 .clear_fix:after { display:block; height:0; clear:both; visibility:hidden; } |
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147 .clear_fix { display:inline-block; } |
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148 * html .clear_fix { height:1%; } |
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149 .clear_fix { display:block; } |
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150 #content { width:970px; margin:0 auto; } |
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151 .sf-exceptionreset, .sf-exceptionreset .block { margin: auto } |
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152 .sf-exceptionreset abbr { border-bottom: 1px dotted #000; cursor: help; } |
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153 .sf-exceptionreset p { font-size:14px; line-height:20px; color:#868686; padding-bottom:20px } |
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154 .sf-exceptionreset strong { font-weight:bold; } |
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155 .sf-exceptionreset a { color:#6c6159; } |
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156 .sf-exceptionreset a img { border:none; } |
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157 .sf-exceptionreset a:hover { text-decoration:underline; } |
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158 .sf-exceptionreset em { font-style:italic; } |
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159 .sf-exceptionreset h1, .sf-exceptionreset h2 { font: 20px Georgia, "Times New Roman", Times, serif } |
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160 .sf-exceptionreset h2 span { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; } |
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161 .sf-exceptionreset .traces li { font-size:12px; padding: 2px 4px; list-style-type:decimal; margin-left:20px; } |
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162 .sf-exceptionreset .block { background-color:#FFFFFF; padding:10px 28px; margin-bottom:20px; |
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163 -webkit-border-bottom-right-radius: 16px; |
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164 -webkit-border-bottom-left-radius: 16px; |
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165 -moz-border-radius-bottomright: 16px; |
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166 -moz-border-radius-bottomleft: 16px; |
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167 border-bottom-right-radius: 16px; |
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168 border-bottom-left-radius: 16px; |
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169 border-bottom:1px solid #ccc; |
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170 border-right:1px solid #ccc; |
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171 border-left:1px solid #ccc; |
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172 } |
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173 .sf-exceptionreset .block_exception { background-color:#ddd; color: #333; padding:20px; |
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174 -webkit-border-top-left-radius: 16px; |
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175 -webkit-border-top-right-radius: 16px; |
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176 -moz-border-radius-topleft: 16px; |
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177 -moz-border-radius-topright: 16px; |
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178 border-top-left-radius: 16px; |
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179 border-top-right-radius: 16px; |
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180 border-top:1px solid #ccc; |
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181 border-right:1px solid #ccc; |
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182 border-left:1px solid #ccc; |
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183 } |
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184 .sf-exceptionreset li a { background:none; color:#868686; text-decoration:none; } |
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185 .sf-exceptionreset li a:hover { background:none; color:#313131; text-decoration:underline; } |
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186 .sf-exceptionreset ol { padding: 10px 0; } |
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187 .sf-exceptionreset h1 { background-color:#FFFFFF; padding: 15px 28px; margin-bottom: 20px; |
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188 -webkit-border-radius: 10px; |
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189 -moz-border-radius: 10px; |
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190 border-radius: 10px; |
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191 border: 1px solid #ccc; |
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192 } |
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193 </style> |
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194 </head> |
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195 <body> |
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196 <div id="content" class="sf-exceptionreset"> |
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197 <h1>$title</h1> |
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198 $content |
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199 </div> |
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200 </body> |
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201 </html> |
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202 EOF; |
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203 } |
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204 |
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205 private function abbrClass($class) |
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206 { |
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207 $parts = explode('\\', $class); |
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208 |
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209 return sprintf("<abbr title=\"%s\">%s</abbr>", $class, array_pop($parts)); |
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210 } |
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211 } |