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<?php
/**
* Parser Exception
*
* @package Less
* @subpackage exception
*/
class Less_Exception_Parser extends Exception{
/**
* The current file
*
* @var Less_ImportedFile
*/
public $currentFile;
/**
* The current parser index
*
* @var integer
*/
public $index;
protected $input;
protected $details = array();
/**
* Constructor
*
* @param string $message
* @param Exception $previous Previous exception
* @param integer $index The current parser index
* @param Less_FileInfo|string $currentFile The file
* @param integer $code The exception code
*/
public function __construct($message = null, Exception $previous = null, $index = null, $currentFile = null, $code = 0){
if (PHP_VERSION_ID < 50300) {
$this->previous = $previous;
parent::__construct($message, $code);
} else {
parent::__construct($message, $code, $previous);
}
$this->currentFile = $currentFile;
$this->index = $index;
$this->genMessage();
}
protected function getInput(){
if( !$this->input && $this->currentFile && $this->currentFile['filename'] && file_exists($this->currentFile['filename']) ){
$this->input = file_get_contents( $this->currentFile['filename'] );
}
}
/**
* Converts the exception to string
*
* @return string
*/
public function genMessage(){
if( $this->currentFile && $this->currentFile['filename'] ){
$this->message .= ' in '.basename($this->currentFile['filename']);
}
if( $this->index !== null ){
$this->getInput();
if( $this->input ){
$line = self::getLineNumber();
$this->message .= ' on line '.$line.', column '.self::getColumn();
$lines = explode("\n",$this->input);
$count = count($lines);
$start_line = max(0, $line-3);
$last_line = min($count, $start_line+6);
$num_len = strlen($last_line);
for( $i = $start_line; $i < $last_line; $i++ ){
$this->message .= "\n".str_pad($i+1,$num_len,'0',STR_PAD_LEFT).'| '.$lines[$i];
}
}
}
}
/**
* Returns the line number the error was encountered
*
* @return integer
*/
public function getLineNumber(){
if( $this->index ){
// https://bugs.php.net/bug.php?id=49790
if (ini_get("mbstring.func_overload")) {
return substr_count(substr($this->input, 0, $this->index), "\n") + 1;
} else {
return substr_count($this->input, "\n", 0, $this->index) + 1;
}
}
return 1;
}
/**
* Returns the column the error was encountered
*
* @return integer
*/
public function getColumn(){
$part = substr($this->input, 0, $this->index);
$pos = strrpos($part,"\n");
return $this->index - $pos;
}
}
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