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PhutilDefaultSyntaxHighlighterEngine.php
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PhutilDefaultSyntaxHighlighterEngine.php
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<?php
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 ($language == 'php' && PhutilXHPASTBinary::isAvailable()) {
return id(new PhutilXHPASTSyntaxHighlighter())
->getHighlightFuture($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 ($language == 'py' || $language == 'python') {
return id(new PhutilLexerSyntaxHighlighter())
->setConfig('lexer', new PhutilPythonFragmentLexer())
->setConfig('language', 'py')
->getHighlightFuture($source);
}
if ($language == 'java') {
return id(new PhutilLexerSyntaxHighlighter())
->setConfig('lexer', new PhutilJavaFragmentLexer())
->setConfig('language', 'java')
->getHighlightFuture($source);
}
if ($language == 'json') {
return id(new PhutilLexerSyntaxHighlighter())
->setConfig('lexer', new PhutilJSONFragmentLexer())
->getHighlightFuture($source);
}
if ($language == 'invisible') {
return id(new PhutilInvisibleSyntaxHighlighter())
->getHighlightFuture($source);
}
// Don't invoke Pygments for plain text, since it's expensive and has
// no effect.
if ($language !== 'text' && $language !== 'txt') {
if ($have_pygments) {
return id(new PhutilPygmentsSyntaxHighlighter())
->setConfig('language', $language)
->getHighlightFuture($source);
}
}
return id(new PhutilDefaultSyntaxHighlighter())
->getHighlightFuture($source);
}
}

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