PHP code example of pattern-lab / patternengine-twig

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

pattern-lab / patternengine-twig example snippets

$filter = new Twig_SimpleFilter('rot13', function ($string) {
	return str_rot13($string);
});

$function = new Twig_SimpleFunction('boo', function ($string) {
	return $string." boo! ";
});

$test = new Twig_SimpleTest('red', function ($value) {
	
	if (isset($value["color"]) && $value["color"] == 'red') {
		return true;
	}
	
	return false;
});

// these files are loaded three times and we can't re-set a class
if (!class_exists("Project_setdupe_Node")) {
	
	class Project_setdupe_Node extends Twig_Node {
		
		public function __construct($name, Twig_Node_Expression $value, $line, $tag = null) {
			parent::__construct(array('value' => $value), array('name' => $name), $line, $tag);
		}
		
		public function compile(Twig_Compiler $compiler) {
			$compiler
				->addDebugInfo($this)
				->write('$context[\''.$this->getAttribute('name').'\'] = ')
				->subcompile($this->getNode('value'))
				->raw(";\n");
		}
		
	}
	
}

// these files are loaded three times and we can't re-set a class
if (!class_exists("Project_setdupe_TokenParser")) {
	
	class Project_setdupe_TokenParser extends Twig_TokenParser {
		
		public function parse(Twig_Token $token) {
			
			$parser = $this->parser;
			$stream = $parser->getStream();
			
			$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
			$stream->expect(Twig_Token::OPERATOR_TYPE, '=');
			$value = $parser->getExpressionParser()->parseExpression();
			$stream->expect(Twig_Token::BLOCK_END_TYPE);
			
			return new Project_setdupe_Node($name, $value, $token->getLine(), $this->getTag());
		}
		
		public function getTag() {
			return 'setdupe';
		}
		
	}
	
}

$twig = new Twig_Environment($loader);

foreach ($twigExtensions as $twigExtension) {
    $twig->addExtension(new $twigExtension());
}

new Twig_SimpleFunction('testPlFunction', function($arg) {
    return 'Thanks for testing out the Pattern Lab Example Twig Extension with this arg: ' . $arg;
}),

$data         = array("hello" => "world");
$string       = "If I say hello you say {{ hello }}.";
$stringLoader = \PatternLab\Template::getStringLoader();
$output       = $stringLoader->render(array("string" => $string, "data" => $data));
print $output; // outputs "If I say hello you say world."

$data             = array(...);
$filesystemLoader = \PatternLab\Template::getFilesystemLoader();
$output           = $filesystemLoader->render(array("template" => "viewall", "data" => $data));
print $output; // outputs the viewall view from the configured styleguidekit

$data                  = array(...);
$patternContent        = file_get_contents("path/to/pattern");
$patternEngineBasePath = \PatternLab\PatternEngine::getInstance()->getBasePath();
$patternLoaderClass    = $patternEngineBasePath."\Loaders\PatternLoader";
$patternLoader         = new $patternLoaderClass($options);
$code                  = $patternLoader->render(array("pattern" => $patternContent, "data" => $data));
print $output; // outputs the given pattern

source/_patterns/00-atoms/03-images/02-landscape-16x9.twig

twig
<p>Testing: {{ testPlFunction('testing...') }}</p>