123 lines
3.9 KiB
PHP
123 lines
3.9 KiB
PHP
<?php
|
|
|
|
/**
|
|
* @file src/Content/Text/Markdown.php
|
|
*/
|
|
|
|
namespace Friendica\Content\Text;
|
|
|
|
use Friendica\BaseObject;
|
|
use Friendica\Model\Contact;
|
|
use Michelf\MarkdownExtra;
|
|
use Friendica\Content\Text\HTML;
|
|
|
|
/**
|
|
* Friendica-specific usage of Markdown
|
|
*
|
|
* @author Hypolite Petovan <hypolite@mrpetovan.com>
|
|
*/
|
|
class Markdown extends BaseObject
|
|
{
|
|
/**
|
|
* Converts a Markdown string into HTML. The hardwrap parameter maximizes
|
|
* compatibility with Diaspora in spite of the Markdown standard.
|
|
*
|
|
* @brief Converts a Markdown string into HTML
|
|
* @param string $text
|
|
* @param bool $hardwrap
|
|
* @return string
|
|
*/
|
|
public static function convert($text, $hardwrap = true) {
|
|
$stamp1 = microtime(true);
|
|
|
|
$MarkdownParser = new MarkdownExtra();
|
|
$MarkdownParser->hard_wrap = $hardwrap;
|
|
$MarkdownParser->code_class_prefix = 'language-';
|
|
$html = $MarkdownParser->transform($text);
|
|
|
|
self::getApp()->save_timestamp($stamp1, "parser");
|
|
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* @brief Callback function to replace a Diaspora style mention in a mention for Friendica
|
|
*
|
|
* @param array $match Matching values for the callback
|
|
* @return string Replaced mention
|
|
*/
|
|
private static function diasporaMention2BBCodeCallback($match)
|
|
{
|
|
if ($match[2] == '') {
|
|
return;
|
|
}
|
|
|
|
$data = Contact::getDetailsByAddr($match[2]);
|
|
|
|
if (empty($data)) {
|
|
return;
|
|
}
|
|
|
|
$name = $match[1];
|
|
|
|
if ($name == '') {
|
|
$name = $data['name'];
|
|
}
|
|
|
|
return '@[url=' . $data['url'] . ']' . $name . '[/url]';
|
|
}
|
|
|
|
/*
|
|
* we don't want to support a bbcode specific markdown interpreter
|
|
* and the markdown library we have is pretty good, but provides HTML output.
|
|
* So we'll use that to convert to HTML, then convert the HTML back to bbcode,
|
|
* and then clean up a few Diaspora specific constructs.
|
|
*/
|
|
public static function toBBCode($s)
|
|
{
|
|
$s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
|
|
|
|
// Handles single newlines
|
|
$s = str_replace("\r\n", "\n", $s);
|
|
$s = str_replace("\n", " \n", $s);
|
|
$s = str_replace("\r", " \n", $s);
|
|
|
|
// Replace lonely stars in lines not starting with it with literal stars
|
|
$s = preg_replace('/^([^\*]+)\*([^\*]*)$/im', '$1\*$2', $s);
|
|
|
|
// The parser cannot handle paragraphs correctly
|
|
$s = str_replace(['</p>', '<p>', '<p dir="ltr">'], ['<br>', '<br>', '<br>'], $s);
|
|
|
|
// Escaping the hash tags
|
|
$s = preg_replace('/\#([^\s\#])/', '#$1', $s);
|
|
|
|
$s = self::convert($s);
|
|
|
|
$regexp = "/@\{(?:([^\}]+?); )?([^\} ]+)\}/";
|
|
$s = preg_replace_callback($regexp, ['self', 'diasporaMention2BBCodeCallback'], $s);
|
|
|
|
$s = str_replace('#', '#', $s);
|
|
|
|
$s = HTML::toBBCode($s);
|
|
|
|
// protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
|
|
$s = str_replace('♲', html_entity_decode('♲', ENT_QUOTES, 'UTF-8'), $s);
|
|
|
|
// Convert everything that looks like a link to a link
|
|
$s = preg_replace('/([^\]=]|^)(https?\:\/\/)([a-zA-Z0-9:\/\-?&;.=_~#%$!+,@]+(?<!,))/ism', '$1[url=$2$3]$2$3[/url]', $s);
|
|
|
|
//$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
|
|
$s = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism', '[youtube]$2[/youtube]', 'url', $s);
|
|
$s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism' , '[youtube]$1[/youtube]', 'url', $s);
|
|
$s = BBCode::pregReplaceInTag('/\[url\=?(.*?)\]https?:\/\/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism' , '[vimeo]$2[/vimeo]' , 'url', $s);
|
|
$s = BBCode::pregReplaceInTag('/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism' , '[vimeo]$1[/vimeo]' , 'url', $s);
|
|
|
|
// remove duplicate adjacent code tags
|
|
$s = preg_replace('/(\[code\])+(.*?)(\[\/code\])+/ism', '[code]$2[/code]', $s);
|
|
|
|
// Don't show link to full picture (until it is fixed)
|
|
$s = BBCode::scaleExternalImages($s, false);
|
|
|
|
return $s;
|
|
}
|
|
}
|