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<?php
/**
* The ExceptionDisplay class is used to dump an exception as a string for
* display.
*
* By setting the environment variable EDITOR_URL you may activate linking the
* file locations to your editor.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @since Stud.IP 6.1
*/
final class ExceptionDisplay implements Stringable
{
private const MARKUP_REGEXP = '~(?<file>(?:[\w-]+/)*[\w-]+\.\w+)(?:\((?<line0>\d+)\)| on line (?<line1>\d+))~m';
public static function from(Throwable $e): self
{
return new self($e);
}
private ?string $editor_url;
private function __construct(
private Throwable $exception
) {
$this->editor_url = $_ENV['EDITOR_URL'] ?? null;
}
private function reducePathToRelative(string $input): string
{
return str_replace($GLOBALS['STUDIP_BASE_PATH'] . '/', '', $input);
}
public function display(bool $as_html = false, bool $deep = false): string
{
$result = '';
$result .= sprintf("%s: %s\n", _('Typ'), get_class($this->exception));
$result .= sprintf("%s: %s\n", _('Nachricht'), $this->reducePathToRelative($this->exception->getMessage()));
$result .= sprintf("%s: %d\n", _('Code'), $this->exception->getCode());
$trace = sprintf("#$ %s(%u)\n", $this->exception->getFile(), $this->exception->getLine());
$trace .= $this->exception->getTraceAsString();
$result .= sprintf("%s:\n%s\n", _('Stack trace'), $this->reducePathToRelative($trace));
if ($deep && $this->exception->getPrevious()) {
$result .= "\n";
$result .= _('Vorherige Exception:') . "\n";
$result .= self::from($this->exception->getPrevious())->display(false, $deep);
}
if (!$as_html) {
return $result;
}
$result = htmlReady($result, br: true);
if (Studip\ENV === 'development' && $this->editor_url) {
$result = preg_replace_callback(
self::MARKUP_REGEXP,
function ($matches) {
return studip_interpolate('<a href="%{link}">%{label}</a>', [
'label' => $matches['file'] . '(' . ($matches['line0'] ?: $matches['line1']) . ')',
'link' => studip_interpolate($this->editor_url, [
'file' => $matches['file'],
'line' => $matches['line0'] ?: $matches['line1'],
]),
]);
},
$result
);
}
return $result;
}
public function __toString(): string
{
return $this->display();
}
}
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