git.m6w6.name Git - mdref/mdref/blob - mdref/ExceptionHandler.php

   1 <?php
   2
   3 namespace mdref;
   4
   5 use http\Env as HTTP;
   6
   7 /**
   8  * mdref exception handler
   9  */
  10 class ExceptionHandler
  11 {
  12         function __construct() {
  13                 set_exception_handler($this);
  14                 set_error_handler($this);
  15         }
  16
  17         function __invoke($e, $msg = null) {
  18                 if ($e instanceof \Exception) {
  19                         try {
  20                                 echo static::html($e);
  21                         } catch (\Exception $ignore) {
  22                                 headers_sent() or HTTP::setResponseCode(500);
  23                         }
  24                 } else {
  25                         throw new \Exception($msg, $e);
  26                 }
  27                 return true;
  28         }
  29
  30         /**
  31          * Format an exception as HTML and send appropriate exception info as HTTP headers
  32          * @param \Exception $e
  33          * @param array $title_tag
  34          * @param array $message_tag
  35          * @param array $trace_tag
  36          * @return string
  37          */
  38         static function html(\Exception $e, array $title_tag = ["h1"], array $message_tag = ["p"], array $trace_tag = ["pre", "style='font-size:smaller'"]) {
  39                 if ($e instanceof \http\Controller\Exception) {
  40                         $code = $e->getCode() ?: 500;
  41                         foreach ($e->getHeaders() as $key => $val) {
  42                                 HTTP::setResponseHeader($key, $val);
  43                         }
  44                 } else {
  45                         $code = 500;
  46                 }
  47                 HTTP::setResponseCode($code);
  48                 $name = HTTP::getResponseStatusForCode($code);
  49                 $html = sprintf("<%s>%s</%s>\n<%s>%s</%s>\n",
  50                                 implode(" ", $title_tag), $name, $title_tag[0],
  51                                 implode(" ", $message_tag), $e->getMessage(), $message_tag[0]);
  52                 if ($trace_tag) {
  53                         $html .= sprintf("<%s>%s</%s>\n",
  54                                         implode(" ", $trace_tag), $e->getTraceAsString(), $trace_tag[0]);
  55                 }
  56                 return $html;
  57         }
  58 }