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94 lines
2.6 KiB
PHP
94 lines
2.6 KiB
PHP
<?php
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/**
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* Source code highlighting class for phd.
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*
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* PHP version 5.3+
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*
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* @category PhD
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* @package PhD
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* @author Christian Weiske <cweiske@php.net>
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* @license http://www.opensource.org/licenses/bsd-license.php BSD Style
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* @link https://doc.php.net/phd/
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*/
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namespace phpdotnet\phd;
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/**
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* Source code highlighting class for phd.
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*
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* @category PhD
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* @package PhD
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* @author Christian Weiske <cweiske@php.net>
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* @license http://www.opensource.org/licenses/bsd-license.php BSD Style
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* @link https://doc.php.net/phd/
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*/
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class Highlighter
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{
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/**
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* Create a new highlighter instance for the given format.
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*
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* We use a factory so you can return different objects/classes
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* per format.
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*
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* @param string $format Output format (xhtml, troff, ...)
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*
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* @return Highlighter Highlighter object
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*/
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public static function factory($format)
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{
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return new self();
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}//public static function factory(..)
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/**
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* Highlight a given piece of source code.
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* Dead simple version that only works for xhtml+php. Returns text as
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* it was in all other cases.
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*
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* @param string $text Text to highlight
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* @param string $role Source code role to use (php, xml, html, ...)
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* @param string $format Output format (xhtml, troff, ...)
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*
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* @return string Highlighted code
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*/
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public function highlight($text, $role, $format)
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{
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if ($format == 'troff') {
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return "\n.PP\n.nf\n"
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. str_replace("\\", "\\\\", trim($text))
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. "\n.fi";
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} else if ($format != 'xhtml') {
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return $text;
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}
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if ($role == 'php') {
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try {
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$highlight = highlight_string($text, true);
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if (PHP_VERSION_ID >= 80300) {
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return $highlight;
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} else {
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return strtr($highlight, [
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' ' => ' ',
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"\n" => '',
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]);
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}
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} catch (\ParseException $e) {
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trigger_error(vsprintf("Parse error while highlighting PHP code: %s\nText: %s", [(string) $e, $text]), E_USER_WARNING);
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return '<pre class="'. $role . 'code">'
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. htmlspecialchars($text, ENT_QUOTES, 'UTF-8')
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. "</pre>\n";
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}
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} else {
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return '<pre class="'. ($role ? $role . 'code' : 'programlisting') .'">'
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. htmlspecialchars($text, ENT_QUOTES, 'UTF-8')
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. "</pre>\n";
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}
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return $retval;
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}//public function highlight(..)
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}
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