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<?php
/**
* Parser Exception
*/
class Less_Exception_Parser extends Exception {
/**
* The current file
*
* @var array
*/
public $currentFile;
/**
* The current parser index
*
* @var int
*/
public $index;
protected $input;
protected $details = [];
/**
* @param string|null $message
* @param Exception|null $previous Previous exception
* @param int|null $index The current parser index
* @param array|null $currentFile The file
* @param int $code The exception code
*/
public function __construct( $message = null, Exception $previous = null, $index = null, $currentFile = null, $code = 0 ) {
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'] );
}
}
/**
* Set a message based on the exception info
*/
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( (string)( $i + 1 ), $num_len, '0', STR_PAD_LEFT ) . '| ' . $lines[$i];
}
}
}
}
/**
* Returns the line number the error was encountered
*
* @return int
*/
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 int
*/
public function getColumn() {
$part = substr( $this->input, 0, $this->index );
$pos = strrpos( $part, "\n" );
return $this->index - $pos;
}
}
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