<?php
/**
* Parser output with source map
*
* @package Less
* @subpackage Output
*/
class Less_Output_Mapped extends Less_Output {
/**
* The source map generator
*
* @var Less_SourceMap_Generator
*/
protected $generator;
/**
* Current line
*
* @var integer
*/
protected $lineNumber = 0;
/**
* Current column
*
* @var integer
*/
protected $column = 0;
/**
* Array of contents map (file and its content)
*
* @var array
*/
protected $contentsMap = array();
/**
* Constructor
*
* @param array $contentsMap Array of filename to contents map
* @param Less_SourceMap_Generator $generator
*/
public function __construct(array $contentsMap, $generator){
$this->contentsMap = $contentsMap;
$this->generator = $generator;
}
/**
* Adds a chunk to the stack
* The $index for less.php may be different from less.js since less.php does not chunkify inputs
*
* @param string $chunk
* @param string $fileInfo
* @param integer $index
* @param mixed $mapLines
*/
public function add($chunk, $fileInfo = null, $index = 0, $mapLines = null){
//ignore adding empty strings
if( $chunk === '' ){
return;
}
$sourceLines = array();
$sourceColumns = ' ';
if( $fileInfo ){
$url = $fileInfo['currentUri'];
if( isset($this->contentsMap[$url]) ){
$inputSource = substr($this->contentsMap[$url], 0, $index);
$sourceLines = explode("\n", $inputSource);
$sourceColumns = end($sourceLines);
}else{
throw new Exception('Filename '.$url.' not in contentsMap');
}
}
$lines = explode("\n", $chunk);
$columns = end($lines);
if($fileInfo){
if(!$mapLines){
$this->generator->addMapping(
$this->lineNumber + 1, // generated_line
$this->column, // generated_column
count($sourceLines), // original_line
strlen($sourceColumns), // original_column
$fileInfo
);
}else{
for($i = 0, $count = count($lines); $i < $count; $i++){
$this->generator->addMapping(
$this->lineNumber + $i + 1, // generated_line
$i === 0 ? $this->column : 0, // generated_column
count($sourceLines) + $i, // original_line
$i === 0 ? strlen($sourceColumns) : 0, // original_column
$fileInfo
);
}
}
}
if(count($lines) === 1){
$this->column += strlen($columns);
}else{
$this->lineNumber += count($lines) - 1;
$this->column = strlen($columns);
}
// add only chunk
parent::add($chunk);
}
}