PhutilRainbowSyntaxHighlighter.php
f68c5514d557stable

PhutilRainbowSyntaxHighlighter.php
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			<?php

			/*
			* Copyright 2012 Facebook, Inc.
			*
			* Licensed under the Apache License, Version 2.0 (the "License");
			* you may not use this file except in compliance with the License.
			* You may obtain a copy of the License at
			*
			* http://www.apache.org/licenses/LICENSE-2.0
			*
			* Unless required by applicable law or agreed to in writing, software
			* distributed under the License is distributed on an "AS IS" BASIS,
			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
			* See the License for the specific language governing permissions and
			* limitations under the License.
			*/

			/**
			* Highlights source code with a rainbow of colors, regardless of the language.
			* This highlighter is useless, absurd, and extremely slow.
			*
			* @group markup
			*/
			final class PhutilRainbowSyntaxHighlighter {

			private $config = array();

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

			public function getHighlightFuture($source) {

			$color = 0;
			$colors = array(
			'rbw_r',
			'rbw_o',
			'rbw_y',
			'rbw_g',
			'rbw_b',
			'rbw_i',
			'rbw_v',
			);

			$result = array();
			foreach (phutil_utf8v($source) as $character) {
			if ($character == ' ' \|\| $character == "\n") {
			$result[] = $character;
			continue;
			}
			$result[] =
			'<span class="'.$colors[$color].'">'.
			phutil_escape_html($character).
			'</span>';
			$color = ($color + 1) % count($colors);
			}

			$result = implode('', $result);
			return new ImmediateFuture($result);
			}
			}