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<?php
class TemplateRenderingException extends Exception
{
private $input = null;
private $tpl_line = 0;
private $offset = 0;
private $error_message = 0;
public function __construct($message, StringInputStream $input = null)
{
$this->error_message = $message;
if ($input != null)
{
$this->input = $input;
$this->compute_position();
}
parent::__construct($this->get_message());
}
private function get_message()
{
$msg = $this->error_message;
if ($this->input != null)
{
$msg .= "\n" . 'line ' . $this->tpl_line . ' offset ' . $this->offset . ' near';
$msg .= ' "...' . TextHelper::htmlspecialchars($this->input->to_string(-100, 200)) . '..."';
}
return $msg;
}
private function compute_position()
{
$position = $this->input->tell();
$string = $this->input->entire_string();
$str_to_position = TextHelper::substr($string, 0, $position);
$this->tpl_line = TextHelper::substr_count($str_to_position, "\n") + 1;
$last_line_index = TextHelper::strrpos($str_to_position, "\n");
$line_content = TextHelper::substr($str_to_position, $last_line_index + 1);
$this->offset = TextHelper::strlen($line_content);
}
}
?>