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<?php
/**
* Parser output with source map
*
* @private
*/
class Less_Output_Mapped extends Less_Output {
/**
* The source map generator
*
* @var Less_SourceMap_Generator
*/
protected $generator;
/**
* Current line
*
* @var int
*/
protected $lineNumber = 0;
/**
* Current column
*
* @var int
*/
protected $column = 0;
/**
* Array of contents map (file and its content)
*
* @var array
*/
protected $contentsMap = [];
/**
* 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 array|null $fileInfo
* @param int $index
* @param bool|null $mapLines
*/
public function add( $chunk, $fileInfo = null, $index = 0, $mapLines = null ) {
// ignore adding empty strings
if ( $chunk === '' ) {
return;
}
$sourceLines = [];
$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 );
}
}
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