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libphutil/src/markup/syntax/engine/PhutilDefaultSyntaxHighlighterEngine.php
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PhutilDefaultSyntaxHighlighterEngine.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.
*/
/**
* @group markup
*/
final class PhutilDefaultSyntaxHighlighterEngine
extends PhutilSyntaxHighlighterEngine {
private $config = array();
public function setConfig($key, $value) {
$this->config[$key] = $value;
return $this;
}
public function getLanguageFromFilename($filename) {
static $default_map = array(
// All files which have file extensions that we haven't already matched
// map to their extensions.
'@\\.([^./]+)$@' => 1,
);
$maps = array();
if (!empty($this->config['filename.map'])) {
$maps[] = $this->config['filename.map'];
}
$maps[] = $default_map;
foreach ($maps as $map) {
foreach ($map as $regexp => $lang) {
$matches = null;
if (preg_match($regexp, $filename, $matches)) {
if (is_numeric($lang)) {
return idx($matches, $lang);
} else {
return $lang;
}
}
}
}
return null;
}
public function getHighlightFuture($language, $source) {
if ($language === null) {
$language = PhutilLanguageGuesser::guessLanguage($source);
}
$have_pygments = !empty($this->config['pygments.enabled']);
if ($language == 'php' && xhpast_is_available()) {
return id(new PhutilXHPASTSyntaxHighlighter())
->getHighlightFuture($source);
}
if ($language == 'console') {
return id(new PhutilConsoleSyntaxHighlighter())
->getHighlightFuture($source);
}
if ($language == 'diviner' || $language == 'remarkup') {
return id(new PhutilDivinerSyntaxHighlighter())
->getHighlightFuture($source);
}
if ($language == 'rainbow') {
return id(new PhutilRainbowSyntaxHighlighter())
->getHighlightFuture($source);
}
if ($language == 'php') {
return id(new PhutilLexerSyntaxHighlighter())
->setConfig('lexer', new PhutilPHPFragmentLexer())
->setConfig('language', 'php')
->getHighlightFuture($source);
}
if ($have_pygments) {
return id(new PhutilPygmentsSyntaxHighlighter())
->setConfig('language', $language)
->getHighlightFuture($source);
}
return id(new PhutilDefaultSyntaxHighlighter())
->getHighlightFuture($source);
}
}
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