mirror of
https://github.com/sbrl/Pepperminty-Wiki.git
synced 2024-12-23 14:05:02 +00:00
127 lines
4.7 KiB
PHP
127 lines
4.7 KiB
PHP
<?php
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register_module([
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"name" => "Default Parser",
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"version" => "0.7",
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"author" => "Johnny Broadway & Starbeamrainbowlabs",
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"description" => "The default parser for Pepperminty Wiki. Based on Johnny Broadway's Slimdown (with more than a few modifications). This parser's features are documented in the help page.",
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"id" => "parser-default",
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"code" => function() {
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add_parser(function($markdown) {
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return Slimdown::render($markdown);
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});
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}
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]);
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////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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///////////////////////////////////////// Slimdown /////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////// %slimdown% //
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////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Slimdown - A very basic regex-based Markdown parser. Supports the
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* following elements (and can be extended via Slimdown::add_rule()):
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*
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* - Headers
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* - Links
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* - Bold
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* - Emphasis
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* - Deletions
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* - Quotes
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* - Inline code
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* - Blockquotes
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* - Ordered/unordered lists
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* - Horizontal rules
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*
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* Author: Johnny Broadway <johnny@johnnybroadway.com>
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* Website: https://gist.github.com/jbroadway/2836900
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* License: MIT
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*/
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/**
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* Modified by Starbeamrainbowlabs (starbeamrainbowlabs)
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*
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* Changed bold to use single asterisks
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* Changed italics to use single underscores
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* Added one to add the heading levels (no <h1> tags allowed)
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* Added wiki style internal link parsing
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* Added wiki style internal link parsing with display text
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* Added image support
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*/
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class Slimdown {
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public static $rules = array (
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'/\r\n/' => "\n", // new line normalisation
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'/(#+)(.*)/' => 'self::header', // headers
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'/(\*)(.*?)\1/' => '<strong>\2</strong>', // bold
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'/(_)(.*?)\1/' => '<em>\2</em>', // emphasis
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// todo test these
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'/!\[(.*)\]\(([^\s]+)\s(\d+.+)\s(left|right)\)/' => '<img src="\2" alt="\1" style="max-width: \3; float: \4;" />', // images with size
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'/!\[(.*)\]\(([^\s]+)\s(\d+.+)\)/' => '<img src="\2" alt="\1" style="max-width: \3;" />', // images with size
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'/!\[(.*)\]\((.*)\)/' => '<img src="\2" alt="\1" />', // basic images
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// todo end
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'/\[\[([a-zA-Z0-9\_\- ]+)\|([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\2</a>', //internal links with display text
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'/\[\[([a-zA-Z0-9\_\- ]+)\]\]/' => '<a href=\'index.php?page=\1\'>\1</a>', //internal links
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'/\[([^\[]+)\]\(([^\)]+)\)/' => '<a href=\'\2\' target=\'_blank\'>\1</a>', // links
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'/\~\~(.*?)\~\~/' => '<del>\1</del>', // del
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'/\:\"(.*?)\"\:/' => '<q>\1</q>', // quote
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'/`(.*?)`/' => '<code>\1</code>', // inline code
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'/\n\s*(\*|-)(.*)/' => 'self::ul_list', // ul lists
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'/\n[0-9]+\.(.*)/' => 'self::ol_list', // ol lists
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'/\n(>|\>)(.*)/' => 'self::blockquote', // blockquotes
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'/\n-{3,}/' => "\n<hr />", // horizontal rule
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'/\n([^\n]+)\n\n/' => 'self::para', // add paragraphs
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'/<\/ul>\s?<ul>/' => '', // fix extra ul
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'/<\/ol>\s?<ol>/' => '', // fix extra ol
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'/<\/blockquote><blockquote>/' => "\n" // fix extra blockquote
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);
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private static function para ($regs) {
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$line = $regs[1];
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$trimmed = trim ($line);
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if (preg_match ('/^<\/?(ul|ol|li|h|p|bl)/', $trimmed)) {
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return "\n" . $line . "\n";
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}
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return sprintf ("\n<p>%s</p>\n", $trimmed);
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}
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private static function ul_list ($regs) {
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$item = $regs[2];
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return sprintf ("\n<ul>\n\t<li>%s</li>\n</ul>", trim($item));
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}
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private static function ol_list ($regs) {
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$item = $regs[1];
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return sprintf ("\n<ol>\n\t<li>%s</li>\n</ol>", trim($item));
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}
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private static function blockquote ($regs) {
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$item = $regs[2];
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return sprintf ("\n<blockquote>%s</blockquote>", trim($item));
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}
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private static function header ($regs) {
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list ($tmp, $chars, $header) = $regs;
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$level = strlen ($chars);
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return sprintf ('<h%d>%s</h%d>', $level + 1, trim($header), $level + 1);
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}
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/**
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* Add a rule.
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*/
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public static function add_rule ($regex, $replacement) {
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self::$rules[$regex] = $replacement;
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}
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/**
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* Render some Markdown into HTML.
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*/
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public static function render ($text) {
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foreach (self::$rules as $regex => $replacement) {
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if (is_callable ( $replacement)) {
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$text = preg_replace_callback ($regex, $replacement, $text);
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} else {
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$text = preg_replace ($regex, $replacement, $text);
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}
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}
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return trim ($text);
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////
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?>
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