264 lines
10 KiB
PHP
264 lines
10 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\HttpKernel\Debug;
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use Symfony\Component\HttpFoundation\Response;
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use Symfony\Component\HttpKernel\Exception\FlattenException;
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if (!defined('ENT_SUBSTITUTE')) {
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define('ENT_SUBSTITUTE', 8);
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}
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/**
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* ExceptionHandler converts an exception to a Response object.
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*
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* It is mostly useful in debug mode to replace the default PHP/XDebug
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* output with something prettier and more useful.
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*
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* As this class is mainly used during Kernel boot, where nothing is yet
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* available, the Response content is always HTML.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class ExceptionHandler
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{
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private $debug;
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private $charset;
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public function __construct($debug = true, $charset = 'UTF-8')
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{
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$this->debug = $debug;
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$this->charset = $charset;
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}
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/**
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* Register the exception handler.
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*
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* @return The registered exception handler
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*/
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public static function register($debug = true)
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{
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$handler = new static($debug);
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set_exception_handler(array($handler, 'handle'));
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return $handler;
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}
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/**
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* Sends a Response for the given Exception.
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*
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* @param \Exception $exception An \Exception instance
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*/
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public function handle(\Exception $exception)
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{
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$this->createResponse($exception)->send();
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}
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/**
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* Creates the error Response associated with the given Exception.
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*
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* @param \Exception|FlattenException $exception An \Exception instance
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*
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* @return Response A Response instance
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*/
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public function createResponse($exception)
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{
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$content = '';
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$title = '';
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try {
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if (!$exception instanceof FlattenException) {
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$exception = FlattenException::create($exception);
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}
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switch ($exception->getStatusCode()) {
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case 404:
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$title = 'Sorry, the page you are looking for could not be found.';
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break;
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default:
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$title = 'Whoops, looks like something went wrong.';
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}
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if ($this->debug) {
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$content = $this->getContent($exception);
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}
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} catch (\Exception $e) {
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// something nasty happened and we cannot throw an exception here anymore
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if ($this->debug) {
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$title = sprintf('Exception thrown when handling an exception (%s: %s)', get_class($exception), $exception->getMessage());
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} else {
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$title = 'Whoops, looks like something went wrong.';
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}
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}
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return new Response($this->decorate($content, $title), $exception->getStatusCode(), $exception->getHeaders());
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}
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private function getContent($exception)
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{
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$message = nl2br($exception->getMessage());
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$class = $this->abbrClass($exception->getClass());
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$count = count($exception->getAllPrevious());
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$content = '';
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foreach ($exception->toArray() as $position => $e) {
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$ind = $count - $position + 1;
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$total = $count + 1;
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$class = $this->abbrClass($e['class']);
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$message = nl2br($e['message']);
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$content .= sprintf(<<<EOF
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<div class="block_exception clear_fix">
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<h2><span>%d/%d</span> %s: %s</h2>
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</div>
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<div class="block">
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<ol class="traces list_exception">
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EOF
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, $ind, $total, $class, $message);
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foreach ($e['trace'] as $i => $trace) {
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$content .= ' <li>';
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if ($trace['function']) {
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$content .= sprintf('at %s%s%s(%s)', $this->abbrClass($trace['class']), $trace['type'], $trace['function'], $this->formatArgs($trace['args']));
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}
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if (isset($trace['file']) && isset($trace['line'])) {
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if ($linkFormat = ini_get('xdebug.file_link_format')) {
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$link = str_replace(array('%f', '%l'), array($trace['file'], $trace['line']), $linkFormat);
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$content .= sprintf(' in <a href="%s" title="Go to source">%s line %s</a>', $link, $trace['file'], $trace['line']);
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} else {
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$content .= sprintf(' in %s line %s', $trace['file'], $trace['line']);
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}
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}
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$content .= "</li>\n";
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}
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$content .= " </ol>\n</div>\n";
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}
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return $content;
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}
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private function decorate($content, $title)
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{
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return <<<EOF
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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
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<meta name="robots" content="noindex,nofollow" />
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<title>{$title}</title>
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<style>
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/* 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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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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html { background: #eee; padding: 10px }
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body { font: 11px Verdana, Arial, sans-serif; color: #333 }
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img { border: 0; }
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.clear { clear:both; height:0; font-size:0; line-height:0; }
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.clear_fix:after { display:block; height:0; clear:both; visibility:hidden; }
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.clear_fix { display:inline-block; }
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* html .clear_fix { height:1%; }
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.clear_fix { display:block; }
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#content { width:970px; margin:0 auto; }
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.sf-exceptionreset, .sf-exceptionreset .block { margin: auto }
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.sf-exceptionreset abbr { border-bottom: 1px dotted #000; cursor: help; }
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.sf-exceptionreset p { font-size:14px; line-height:20px; color:#868686; padding-bottom:20px }
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.sf-exceptionreset strong { font-weight:bold; }
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.sf-exceptionreset a { color:#6c6159; }
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.sf-exceptionreset a img { border:none; }
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.sf-exceptionreset a:hover { text-decoration:underline; }
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.sf-exceptionreset em { font-style:italic; }
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.sf-exceptionreset h1, .sf-exceptionreset h2 { font: 20px Georgia, "Times New Roman", Times, serif }
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.sf-exceptionreset h2 span { background-color: #fff; color: #333; padding: 6px; float: left; margin-right: 10px; }
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.sf-exceptionreset .traces li { font-size:12px; padding: 2px 4px; list-style-type:decimal; margin-left:20px; }
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.sf-exceptionreset .block { background-color:#FFFFFF; padding:10px 28px; margin-bottom:20px;
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-webkit-border-bottom-right-radius: 16px;
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-webkit-border-bottom-left-radius: 16px;
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-moz-border-radius-bottomright: 16px;
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-moz-border-radius-bottomleft: 16px;
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border-bottom-right-radius: 16px;
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border-bottom-left-radius: 16px;
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border-bottom:1px solid #ccc;
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border-right:1px solid #ccc;
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border-left:1px solid #ccc;
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}
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.sf-exceptionreset .block_exception { background-color:#ddd; color: #333; padding:20px;
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-webkit-border-top-left-radius: 16px;
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-webkit-border-top-right-radius: 16px;
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-moz-border-radius-topleft: 16px;
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-moz-border-radius-topright: 16px;
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border-top-left-radius: 16px;
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border-top-right-radius: 16px;
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border-top:1px solid #ccc;
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border-right:1px solid #ccc;
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border-left:1px solid #ccc;
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}
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.sf-exceptionreset li a { background:none; color:#868686; text-decoration:none; }
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.sf-exceptionreset li a:hover { background:none; color:#313131; text-decoration:underline; }
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.sf-exceptionreset ol { padding: 10px 0; }
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.sf-exceptionreset h1 { background-color:#FFFFFF; padding: 15px 28px; margin-bottom: 20px;
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-webkit-border-radius: 10px;
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-moz-border-radius: 10px;
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border-radius: 10px;
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border: 1px solid #ccc;
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}
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</style>
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</head>
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<body>
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<div id="content" class="sf-exceptionreset">
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<h1>$title</h1>
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$content
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</div>
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</body>
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</html>
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EOF;
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}
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private function abbrClass($class)
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{
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$parts = explode('\\', $class);
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return sprintf("<abbr title=\"%s\">%s</abbr>", $class, array_pop($parts));
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}
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/**
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* Formats an array as a string.
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*
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* @param array $args The argument array
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*
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* @return string
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*/
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public function formatArgs(array $args)
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{
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$result = array();
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foreach ($args as $key => $item) {
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if ('object' === $item[0]) {
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$formattedValue = sprintf("<em>object</em>(%s)", $this->abbrClass($item[1]));
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} elseif ('array' === $item[0]) {
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$formattedValue = sprintf("<em>array</em>(%s)", is_array($item[1]) ? $this->formatArgs($item[1]) : $item[1]);
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} elseif ('string' === $item[0]) {
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$formattedValue = sprintf("'%s'", htmlspecialchars($item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset));
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} elseif ('null' === $item[0]) {
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$formattedValue = '<em>null</em>';
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} elseif ('boolean' === $item[0]) {
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$formattedValue = '<em>'.strtolower(var_export($item[1], true)).'</em>';
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} elseif ('resource' === $item[0]) {
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$formattedValue = '<em>resource</em>';
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} else {
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$formattedValue = str_replace("\n", '', var_export(htmlspecialchars((string) $item[1], ENT_QUOTES | ENT_SUBSTITUTE, $this->charset), true));
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}
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$result[] = is_int($key) ? $formattedValue : sprintf("'%s' => %s", $key, $formattedValue);
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}
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return implode(', ', $result);
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}
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}
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