275 lines
7.0 KiB
PHP
275 lines
7.0 KiB
PHP
<?php
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/**
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* This file provides the part of lessphp API (https://github.com/leafo/lessphp)
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* to be a drop-in replacement for following products:
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* - Drupal 7, by the less module v3.0+ (https://drupal.org/project/less)
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* - Symfony 2
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*/
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// Register autoloader for non-composer installations
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if ( !class_exists( 'Less_Parser' ) ) {
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require_once __DIR__ . '/lib/Less/Autoloader.php';
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Less_Autoloader::register();
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}
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class lessc {
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public static $VERSION = Less_Version::less_version;
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public $importDir = '';
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protected $allParsedFiles = [];
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protected $libFunctions = [];
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protected $registeredVars = [];
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private $formatterName;
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private $options = [];
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public function __construct( $lessc = null, $sourceName = null ) {
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}
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public function setImportDir( $dirs ) {
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$this->importDir = (array)$dirs;
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}
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public function addImportDir( $dir ) {
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$this->importDir = (array)$this->importDir;
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$this->importDir[] = $dir;
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}
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public function setFormatter( $name ) {
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$this->formatterName = $name;
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}
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public function setPreserveComments( $preserve ) {
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}
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public function registerFunction( $name, $func ) {
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$this->libFunctions[$name] = $func;
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}
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public function unregisterFunction( $name ) {
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unset( $this->libFunctions[$name] );
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}
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public function setVariables( $variables ) {
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foreach ( $variables as $name => $value ) {
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$this->setVariable( $name, $value );
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}
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}
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public function setVariable( $name, $value ) {
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$this->registeredVars[$name] = $value;
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}
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public function unsetVariable( $name ) {
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unset( $this->registeredVars[$name] );
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}
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public function setOptions( $options ) {
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foreach ( $options as $name => $value ) {
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$this->setOption( $name, $value );
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}
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}
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public function setOption( $name, $value ) {
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$this->options[$name] = $value;
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}
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public function parse( $buffer, $presets = [] ) {
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$this->setVariables( $presets );
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$parser = new Less_Parser( $this->getOptions() );
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$parser->setImportDirs( $this->getImportDirs() );
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foreach ( $this->libFunctions as $name => $func ) {
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$parser->registerFunction( $name, $func );
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}
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$parser->parse( $buffer );
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if ( count( $this->registeredVars ) ) {
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$parser->ModifyVars( $this->registeredVars );
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}
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return $parser->getCss();
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}
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protected function getOptions() {
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$options = [ 'relativeUrls' => false ];
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switch ( $this->formatterName ) {
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case 'compressed':
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$options['compress'] = true;
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break;
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}
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if ( is_array( $this->options ) ) {
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$options = array_merge( $options, $this->options );
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}
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return $options;
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}
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protected function getImportDirs() {
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$dirs_ = (array)$this->importDir;
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$dirs = [];
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foreach ( $dirs_ as $dir ) {
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$dirs[$dir] = '';
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}
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return $dirs;
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}
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public function compile( $string, $name = null ) {
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$oldImport = $this->importDir;
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$this->importDir = (array)$this->importDir;
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$this->allParsedFiles = [];
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$parser = new Less_Parser( $this->getOptions() );
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$parser->SetImportDirs( $this->getImportDirs() );
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if ( count( $this->registeredVars ) ) {
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$parser->ModifyVars( $this->registeredVars );
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}
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foreach ( $this->libFunctions as $name => $func ) {
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$parser->registerFunction( $name, $func );
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}
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$parser->parse( $string );
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$out = $parser->getCss();
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$parsed = Less_Parser::AllParsedFiles();
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foreach ( $parsed as $file ) {
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$this->addParsedFile( $file );
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}
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$this->importDir = $oldImport;
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return $out;
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}
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public function compileFile( $fname, $outFname = null ) {
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if ( !is_readable( $fname ) ) {
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throw new Exception( 'load error: failed to find ' . $fname );
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}
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$pi = pathinfo( $fname );
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$oldImport = $this->importDir;
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$this->importDir = (array)$this->importDir;
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$this->importDir[] = Less_Parser::AbsPath( $pi['dirname'] ) . '/';
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$this->allParsedFiles = [];
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$this->addParsedFile( $fname );
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$parser = new Less_Parser( $this->getOptions() );
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$parser->SetImportDirs( $this->getImportDirs() );
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if ( count( $this->registeredVars ) ) {
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$parser->ModifyVars( $this->registeredVars );
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}
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foreach ( $this->libFunctions as $name => $func ) {
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$parser->registerFunction( $name, $func );
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}
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$parser->parseFile( $fname );
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$out = $parser->getCss();
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$parsed = Less_Parser::AllParsedFiles();
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foreach ( $parsed as $file ) {
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$this->addParsedFile( $file );
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}
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$this->importDir = $oldImport;
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if ( $outFname !== null ) {
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return file_put_contents( $outFname, $out );
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}
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return $out;
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}
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public function checkedCompile( $in, $out ) {
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if ( !is_file( $out ) || filemtime( $in ) > filemtime( $out ) ) {
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$this->compileFile( $in, $out );
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return true;
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}
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return false;
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}
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/**
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* Execute lessphp on a .less file or a lessphp cache structure
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*
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* The lessphp cache structure contains information about a specific
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* less file having been parsed. It can be used as a hint for future
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* calls to determine whether or not a rebuild is required.
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*
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* The cache structure contains two important keys that may be used
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* externally:
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*
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* compiled: The final compiled CSS
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* updated: The time (in seconds) the CSS was last compiled
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*
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* The cache structure is a plain-ol' PHP associative array and can
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* be serialized and unserialized without a hitch.
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*
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* @param mixed $in Input
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* @param bool $force Force rebuild?
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* @return array lessphp cache structure
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*/
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public function cachedCompile( $in, $force = false ) {
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// assume no root
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$root = null;
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if ( is_string( $in ) ) {
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$root = $in;
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} elseif ( is_array( $in ) and isset( $in['root'] ) ) {
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if ( $force or !isset( $in['files'] ) ) {
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// If we are forcing a recompile or if for some reason the
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// structure does not contain any file information we should
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// specify the root to trigger a rebuild.
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$root = $in['root'];
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} elseif ( isset( $in['files'] ) and is_array( $in['files'] ) ) {
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foreach ( $in['files'] as $fname => $ftime ) {
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if ( !file_exists( $fname ) or filemtime( $fname ) > $ftime ) {
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// One of the files we knew about previously has changed
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// so we should look at our incoming root again.
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$root = $in['root'];
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break;
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}
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}
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}
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} else {
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// TODO: Throw an exception? We got neither a string nor something
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// that looks like a compatible lessphp cache structure.
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return null;
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}
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if ( $root !== null ) {
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// If we have a root value which means we should rebuild.
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$out = [];
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$out['root'] = $root;
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$out['compiled'] = $this->compileFile( $root );
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$out['files'] = $this->allParsedFiles();
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$out['updated'] = time();
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return $out;
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} else {
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// No changes, pass back the structure
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// we were given initially.
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return $in;
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}
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}
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public function ccompile( $in, $out, $less = null ) {
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if ( $less === null ) {
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$less = new self;
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}
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return $less->checkedCompile( $in, $out );
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}
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public static function cexecute( $in, $force = false, $less = null ) {
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if ( $less === null ) {
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$less = new self;
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}
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return $less->cachedCompile( $in, $force );
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}
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public function allParsedFiles() {
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return $this->allParsedFiles;
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}
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protected function addParsedFile( $file ) {
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$this->allParsedFiles[Less_Parser::AbsPath( $file )] = filemtime( $file );
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}
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}
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