diff options
Diffstat (limited to '')
| -rw-r--r-- | lib/less.php/Tree/Import.php | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/lib/less.php/Tree/Import.php b/lib/less.php/Tree/Import.php new file mode 100644 index 0000000..4e14afe --- /dev/null +++ b/lib/less.php/Tree/Import.php @@ -0,0 +1,304 @@ +<?php + +/** + * CSS @import node + * + * The general strategy here is that we don't want to wait + * for the parsing to be completed, before we start importing + * the file. That's because in the context of a browser, + * most of the time will be spent waiting for the server to respond. + * + * On creation, we push the import path to our import queue, though + * `import,push`, we also pass it a callback, which it'll call once + * the file has been fetched, and parsed. + * + * @package Less + * @subpackage tree + */ +class Less_Tree_Import extends Less_Tree{ + + public $options; + public $index; + public $path; + public $features; + public $currentFileInfo; + public $css; + public $skip; + public $root; + public $type = 'Import'; + + public function __construct($path, $features, $options, $index, $currentFileInfo = null ){ + $this->options = $options; + $this->index = $index; + $this->path = $path; + $this->features = $features; + $this->currentFileInfo = $currentFileInfo; + + if( is_array($options) ){ + $this->options += array('inline'=>false); + + if( isset($this->options['less']) || $this->options['inline'] ){ + $this->css = !isset($this->options['less']) || !$this->options['less'] || $this->options['inline']; + } else { + $pathValue = $this->getPath(); + if( $pathValue && preg_match('/css([\?;].*)?$/',$pathValue) ){ + $this->css = true; + } + } + } + } + +// +// The actual import node doesn't return anything, when converted to CSS. +// The reason is that it's used at the evaluation stage, so that the rules +// it imports can be treated like any other rules. +// +// In `eval`, we make sure all Import nodes get evaluated, recursively, so +// we end up with a flat structure, which can easily be imported in the parent +// ruleset. +// + + public function accept($visitor){ + + if( $this->features ){ + $this->features = $visitor->visitObj($this->features); + } + $this->path = $visitor->visitObj($this->path); + + if( !$this->options['inline'] && $this->root ){ + $this->root = $visitor->visit($this->root); + } + } + + /** + * @see Less_Tree::genCSS + */ + public function genCSS( $output ){ + if( $this->css ){ + + $output->add( '@import ', $this->currentFileInfo, $this->index ); + + $this->path->genCSS( $output ); + if( $this->features ){ + $output->add( ' ' ); + $this->features->genCSS( $output ); + } + $output->add( ';' ); + } + } + + public function toCSS(){ + $features = $this->features ? ' ' . $this->features->toCSS() : ''; + + if ($this->css) { + return "@import " . $this->path->toCSS() . $features . ";\n"; + } else { + return ""; + } + } + + /** + * @return string + */ + public function getPath(){ + if ($this->path instanceof Less_Tree_Quoted) { + $path = $this->path->value; + $path = ( isset($this->css) || preg_match('/(\.[a-z]*$)|([\?;].*)$/',$path)) ? $path : $path . '.less'; + } else if ($this->path instanceof Less_Tree_URL) { + $path = $this->path->value->value; + }else{ + return null; + } + + //remove query string and fragment + return preg_replace('/[\?#][^\?]*$/','',$path); + } + + public function compileForImport( $env ){ + return new Less_Tree_Import( $this->path->compile($env), $this->features, $this->options, $this->index, $this->currentFileInfo); + } + + public function compilePath($env) { + $path = $this->path->compile($env); + $rootpath = ''; + if( $this->currentFileInfo && $this->currentFileInfo['rootpath'] ){ + $rootpath = $this->currentFileInfo['rootpath']; + } + + + if( !($path instanceof Less_Tree_URL) ){ + if( $rootpath ){ + $pathValue = $path->value; + // Add the base path if the import is relative + if( $pathValue && Less_Environment::isPathRelative($pathValue) ){ + $path->value = $this->currentFileInfo['uri_root'].$pathValue; + } + } + $path->value = Less_Environment::normalizePath($path->value); + } + + + + return $path; + } + + public function compile( $env ){ + + $evald = $this->compileForImport($env); + + //get path & uri + $path_and_uri = null; + if( is_callable(Less_Parser::$options['import_callback']) ){ + $path_and_uri = call_user_func(Less_Parser::$options['import_callback'],$evald); + } + + if( !$path_and_uri ){ + $path_and_uri = $evald->PathAndUri(); + } + + if( $path_and_uri ){ + list($full_path, $uri) = $path_and_uri; + }else{ + $full_path = $uri = $evald->getPath(); + } + + + //import once + if( $evald->skip( $full_path, $env) ){ + return array(); + } + + if( $this->options['inline'] ){ + //todo needs to reference css file not import + //$contents = new Less_Tree_Anonymous($this->root, 0, array('filename'=>$this->importedFilename), true ); + + Less_Parser::AddParsedFile($full_path); + $contents = new Less_Tree_Anonymous( file_get_contents($full_path), 0, array(), true ); + + if( $this->features ){ + return new Less_Tree_Media( array($contents), $this->features->value ); + } + + return array( $contents ); + } + + // optional (need to be before "CSS" to support optional CSS imports. CSS should be checked only if empty($this->currentFileInfo)) + if( isset($this->options['optional']) && $this->options['optional'] && !file_exists($full_path) && (!$evald->css || !empty($this->currentFileInfo))) { + return array(); + } + + + // css ? + if( $evald->css ){ + $features = ( $evald->features ? $evald->features->compile($env) : null ); + return new Less_Tree_Import( $this->compilePath( $env), $features, $this->options, $this->index); + } + + + return $this->ParseImport( $full_path, $uri, $env ); + } + + + /** + * Using the import directories, get the full absolute path and uri of the import + * + * @param Less_Tree_Import $evald + */ + public function PathAndUri(){ + + $evald_path = $this->getPath(); + + if( $evald_path ){ + + $import_dirs = array(); + + if( Less_Environment::isPathRelative($evald_path) ){ + //if the path is relative, the file should be in the current directory + $import_dirs[ $this->currentFileInfo['currentDirectory'] ] = $this->currentFileInfo['uri_root']; + + }else{ + //otherwise, the file should be relative to the server root + $import_dirs[ $this->currentFileInfo['entryPath'] ] = $this->currentFileInfo['entryUri']; + + //if the user supplied entryPath isn't the actual root + $import_dirs[ $_SERVER['DOCUMENT_ROOT'] ] = ''; + + } + + // always look in user supplied import directories + $import_dirs = array_merge( $import_dirs, Less_Parser::$options['import_dirs'] ); + + + foreach( $import_dirs as $rootpath => $rooturi){ + if( is_callable($rooturi) ){ + list($path, $uri) = call_user_func($rooturi, $evald_path); + if( is_string($path) ){ + $full_path = $path; + return array( $full_path, $uri ); + } + }elseif( !empty($rootpath) ){ + + $path = rtrim($rootpath,'/\\').'/'.ltrim($evald_path,'/\\'); + + if( file_exists($path) ){ + $full_path = Less_Environment::normalizePath($path); + $uri = Less_Environment::normalizePath(dirname($rooturi.$evald_path)); + return array( $full_path, $uri ); + } elseif( file_exists($path.'.less') ){ + $full_path = Less_Environment::normalizePath($path.'.less'); + $uri = Less_Environment::normalizePath(dirname($rooturi.$evald_path.'.less')); + return array( $full_path, $uri ); + } + } + } + } + } + + + /** + * Parse the import url and return the rules + * + * @return Less_Tree_Media|array + */ + public function ParseImport( $full_path, $uri, $env ){ + + $import_env = clone $env; + if( (isset($this->options['reference']) && $this->options['reference']) || isset($this->currentFileInfo['reference']) ){ + $import_env->currentFileInfo['reference'] = true; + } + + if( (isset($this->options['multiple']) && $this->options['multiple']) ){ + $import_env->importMultiple = true; + } + + $parser = new Less_Parser($import_env); + $root = $parser->parseFile($full_path, $uri, true); + + + $ruleset = new Less_Tree_Ruleset(array(), $root->rules ); + $ruleset->evalImports($import_env); + + return $this->features ? new Less_Tree_Media($ruleset->rules, $this->features->value) : $ruleset->rules; + } + + + /** + * Should the import be skipped? + * + * @return boolean|null + */ + private function Skip($path, $env){ + + $path = Less_Parser::AbsPath($path, true); + + if( $path && Less_Parser::FileParsed($path) ){ + + if( isset($this->currentFileInfo['reference']) ){ + return true; + } + + return !isset($this->options['multiple']) && !$env->importMultiple; + } + + } +} |