PhutilLexerSyntaxHighlighter.php
4f9915ecac81stable

PhutilLexerSyntaxHighlighter.php
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			<?php

			/**
			* @group markup
			*/
			final class PhutilLexerSyntaxHighlighter extends PhutilSyntaxHighlighter {

			private $config = array();

			public function setConfig($key, $value) {
			$this->config[$key] = $value;
			return $this;
			}

			public function getHighlightFuture($source) {
			$strip = false;
			$state = 'start';
			$lang = idx($this->config, 'language');

			if ($lang == 'php') {
			if (strpos($source, '<?') === false) {
			$state = 'php';
			}
			}

			$lexer = idx($this->config, 'lexer');
			$tokens = $lexer->getTokens($source, $state);
			$tokens = $lexer->mergeTokens($tokens);

			$result = array();
			foreach ($tokens as $token) {
			list($type, $value, $context) = $token;
			$value = phutil_escape_html($value);

			$data_name = null;
			switch ($type) {
			case 'nc':
			case 'nf':
			case 'na':
			$data_name = ' data-symbol-name="'.$value.'"';
			break;
			}

			$data_context = null;
			if ($context) {
			$context = phutil_escape_html($context);
			$data_context = ' data-symbol-context="'.$context.'"';
			}

			$class_name = null;
			if ($type) {
			$class_name = ' class="'.$type.'"';
			}

			if (strpos($value, "\n") !== false) {
			$value = explode("\n", $value);
			} else {
			$value = array($value);
			}
			foreach ($value as $part) {
			if (strlen($part)) {
			if ($class_name) {
			$result[] =
			'<span'.$class_name.$data_context.$data_name.'>'.
			$part.
			'</span>';
			} else {
			$result[] = $part;
			}
			}
			$result[] = "\n";
			}

			// Throw away the last "\n".
			array_pop($result);
			}

			$result = implode('', $result);

			return new ImmediateFuture($result);
			}

			}