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