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CelerityManagementSyntaxWorkflow.php
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			<?php

			final class CelerityManagementSyntaxWorkflow
			extends CelerityManagementWorkflow {

			protected function didConstruct() {
			$this
			->setName('syntax')
			->setExamples('syntax [options]')
			->setSynopsis(pht('Rebuild syntax highlighting CSS.'))
			->setArguments(
			array());
			}

			public function execute(PhutilArgumentParser $args) {
			$styles = PhabricatorSyntaxStyle::getAllStyles();

			$root = dirname(phutil_get_library_root('phabricator'));
			$root = $root.'/webroot/rsrc/css/syntax/';

			foreach ($styles as $key => $style) {
			$content = $this->generateCSS($style);
			$path = $root.'/syntax-'.$key.'.css';
			Filesystem::writeFile($path, $content);

			echo tsprintf(
			"%s\n",
			pht(
			'Rebuilt "%s" syntax CSS.',
			basename($path)));
			}

			return 0;
			}

			private function generateCSS(PhabricatorSyntaxStyle $style) {
			$key = $style->getSyntaxStyleKey();
			$provides = "syntax-{$key}-css";
			$generated = 'generated';

			$header =
			"/**\n".
			" * @provides {$provides}\n".
			" * @{$generated}\n".
			" */\n\n";

			$groups = array();
			$map = $style->getStyleMap();
			ksort($map);
			foreach ($map as $key => $value) {
			$groups[$value][] = $key;
			}

			$rules = array();
			foreach ($groups as $body => $classes) {
			$parts = array();
			foreach ($classes as $class) {
			$parts[] = ".remarkup-code .{$class}";
			}
			$rules[] = implode(",\n", $parts)." {\n {$body}\n}";
			}
			$rules = implode("\n\n", $rules);

			return $header.$rules."\n";
			}

			}