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port of Hubzillas code highlight feature

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This commit is contained in:
rabuzarus 2016-06-16 11:38:12 +02:00
commit 0167a2bd61
56 changed files with 23431 additions and 0 deletions
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12
include/bbcode.php
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@ -717,6 +717,13 @@ function bb_CleanPictureLinks($text) {
return ($text);
}
function bb_highlight($match) {
if(in_array(strtolower($match[1]),['php','css','mysql','sql','abap','diff','html','perl','ruby',
'vbscript','avrc','dtd','java','xml','cpp','python','javascript','js','sh']))
return text_highlight($match[2],strtolower($match[1]));
return $match[0];
}
// BBcode 2 HTML was written by WAY2WEB.net
// extended to work with Mistpark/Friendica - Mike Macgirvin
@ -769,6 +776,11 @@ function bbcode($Text,$preserve_nl = false, $tryoembed = true, $simplehtml = fal
if (!$tryoembed)
$Text = preg_replace("/\[share(.*?)avatar\s?=\s?'.*?'\s?(.*?)\]\s?(.*?)\s?\[\/share\]\s?/ism","\n[share$1$2]$3[/share]",$Text);
// Check for [code] text here, before the linefeeds are messed with.
// The highlighter will unescape and re-escape the content.
if (strpos($Text,'[code=') !== false) {
$Text = preg_replace_callback("/\[code=(.*?)\](.*?)\[\/code\]/ism", 'bb_highlight', $Text);
}
// Convert new line chars to html <br /> tags
// nlbr seems to be hopelessly messed up

40
include/text.php
View file

@ -2087,3 +2087,43 @@ function format_network_name($network, $url = 0) {
}
}
/**
* @brief Syntax based code highlighting for popular languages.
* @param string $s Code block
* @param string $lang Programming language
* @return string Formated html
*/
function text_highlight($s,$lang) {
if($lang === 'js')
$lang = 'javascript';
if(! strpos('Text_Highlighter',get_include_path())) {
set_include_path(get_include_path() . PATH_SEPARATOR . 'library/Text_Highlighter');
}
require_once('library/Text_Highlighter/Text/Highlighter.php');
require_once('library/Text_Highlighter/Text/Highlighter/Renderer/Html.php');
$options = array(
'numbers' => HL_NUMBERS_LI,
'tabsize' => 4,
);
$tag_added = false;
$s = trim(html_entity_decode($s,ENT_COMPAT));
$s = str_replace(" ","\t",$s);
if($lang === 'php') {
if(strpos('<?php',$s) !== 0) {
$s = '<?php' . "\n" . $s;
$tag_added = true;
}
}
$renderer = new Text_Highlighter_Renderer_HTML($options);
$hl = Text_Highlighter::factory($lang);
$hl->setRenderer($renderer);
$o = $hl->highlight($s);
$o = str_replace([" ","\n"],["&nbsp;&nbsp;&nbsp;&nbsp;",''],$o);
if($tag_added) {
$b = substr($o,0,strpos($o,'<li>'));
$e = substr($o,strpos($o,'</li>'));
$o = $b . $e;
}
return('<code>' . $o . '</code>');
}