nl_tokens: Look up a templating engine within the current app and context . engine can be one of the following : * a function : should conform to function ( content data ) { return interploated ; } * a template path : template . ejs looks up the extension to match to the ejs () helper * a string referering to the helper : mustache = > mustache () If no engine is found use the app s default template_engine
pl_tokens: function ( engine ) { var context = this , engine_match ; // if path is actually an engine function just return it if ( _isFunction ( engine ) ) { return engine ; } // lookup engine name by path extension engine = ( engine || context . app . template_engine ) . toString ( ) ; if ( ( engine_match = engine . match ( / \.([^\.]+)$ / ) ) ) { engine = engine_match [ 1 ] ; } // set the engine to the default template engine if no match is found if ( engine && _isFunction ( context [ engine ] ) ) { return context [ engine ] ; } if ( context . app . template_engine ) { return this . engineFor ( context . app . template_engine ) ; } return function ( content , <mask> ) { return content ; } ; }