+function abort($body, $status = NULL) {
+ if ($status) header("HTTP/1.1 $status");
+ print "$body\n";
+ exit;
+}
+
+function getoutput($blocks = [])
+{
+ $doc = ob_get_clean();
+
+ if (!empty($blocks['warn'])) {
+ $warn = '<p class="warn">[[warn]]</p>';
+ if ($offset = strpos($doc, '</h2>')) {
+ $doc = substr_replace($doc, "\n\n".$warn, $offset + 5, 0);
+ }
+ else {
+ $doc = $warn . "\n\n" . $doc;
+ }
+ }
+
+ return preg_replace_callback(
+ '< \[\[ ([^] ]+) ([^]]*) \]\] >x',
+ function ($sub) use ($blocks) {
+ list ($placeholder, $name, $params) = $sub;
+ if (isset($blocks[$name])) {
+ $html = $blocks[$name];
+ }
+ elseif (file_exists("$name.php")) {
+ ob_start();
+ $Page = $GLOBALS['Page'] . $GLOBALS['Args'];
+ $Args = '';
+ $Place = $GLOBALS['Place'];
+ foreach (explode(' ', $params) as $param) {
+ if ($set = strpos($param, '=')) {
+ $Place[ substr($param, 0, $set) ] = substr($param, $set + 1);
+ }
+ elseif (!empty($param)) {
+ $Args .= '/'.$param;
+ }
+ }
+ try {
+ include "$name.php";
+ $html = ob_get_clean();
+ }
+ catch (Exception $e) {
+ $html = sprintf('<strong class="warn">%s</strong>',
+ "fout in <em>$name</em>: {$e->getMessage()}"
+ );
+ }
+ }
+ else {
+ $html = '<strong class="warn"><em>'.$name.'</em> ontbreekt</strong>';
+ }
+ return sprintf('<!--BLOCK:%s-->%s<!--/-->',
+ is_numeric($name) ? '' : $placeholder, # edit replacement
+ preg_replace('{<!--[^-]*-->}', '', $html) # contents
+ );
+ },
+ $doc
+ );
+}
+
+# custom error handling
+
+define('DOCROOT', getcwd());
+set_include_path(implode(PATH_SEPARATOR, [ DOCROOT, __DIR__ ]));
+
+function fail($error)
+{
+ http_response_code(500);
+ include_once 'page.inc.php';
+ ob_start();
+ require_once '500.html';
+ print getoutput(['debug' => $error]);
+}
+
+set_exception_handler('fail');
+
+define('E_FATAL', E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR);
+
+set_error_handler(function ($level, $error, $file, $line) {
+ if ($level & E_FATAL) {
+ fail($error);
+ return;
+ }
+ return FALSE;
+});
+
+register_shutdown_function(function () {
+ # display failure page for fatal exceptions
+ $error = error_get_last();
+ if (!($error['type'] & E_FATAL)) return;
+ fail("Fatal: $error[message] in $error[file]:$error[line]");
+});
+
+error_reporting(error_reporting() & ~E_FATAL);
+
+# user login and control
+