<?php
/*
Plugin Name: Markdown-WB
Plugin URI:
Description: Call PHP Markdown Library from WordPress.
Author:
Donate link:
Version: 1.0.0
Author URI:
*/
define('MDLIB_PHP', 101);
define('MDLIB_CEBE', 102);
define('MDLIB_PD', 103);
define('MDTYPE_MD', 201);
define('MDTYPE_EX', 202);
define('MDTYPE_GIT', 203);
function markdownWb($content) {
// select library and markdown type
/*
$lib = MDLIB_PHP;
$lib = MDLIB_CEBE;
*/
$lib = MDLIB_PD;
/*
$type = MDTYPE_MD;
$type = MDTYPE_EX;
*/
$type = MDTYPE_GIT;
//$use_nbsp = true;
$use_nbsp = false;
return markdownWbBranch($content, $lib, $type, $use_nbsp);
}
function markdownWbBranch($content, $lib = MDLIB_PD, $type = MDTYPE_EX, $use_nbsp = true) {
if ($use_nbsp) {
$content = leadingSpaceToNbsp($content);
}
if ($lib == MDLIB_PHP) {
if ($type == MDTYPE_MD) {
require_once 'Michelf/Markdown.inc.php';
$parser = new Michelf\Markdown;
} else if ($type == MDTYPE_EX) {
require_once 'Michelf/MarkdownExtra.inc.php';
$parser = new Michelf\MarkdownExtra;
}
$content = $parser->transform($content);
} else if ($lib == MDLIB_CEBE) {
require_once 'cebe/Parser.php';
require_once 'cebe/block/CodeTrait.php';
require_once 'cebe/block/HeadlineTrait.php';
require_once 'cebe/block/HtmlTrait.php';
require_once 'cebe/block/ListTrait.php';
require_once 'cebe/block/QuoteTrait.php';
require_once 'cebe/block/RuleTrait.php';
require_once 'cebe/inline/CodeTrait.php';
require_once 'cebe/inline/EmphStrongTrait.php';
require_once 'cebe/inline/LinkTrait.php';
require_once 'cebe/block/TableTrait.php';
require_once 'cebe/block/FencedCodeTrait.php';
require_once 'cebe/inline/StrikeoutTrait.php';
require_once 'cebe/inline/UrlLinkTrait.php';
require_once 'cebe/Markdown.php';
if ($type == MDTYPE_MD) {
$parser = new cebe\markdown\Markdown;
} else if ($type == MDTYPE_EX) {
require_once 'cebe/MarkdownExtra.php';
$parser = new cebe\markdown\MarkdownExtra;
} else if ($type == MDTYPE_GIT) {
require_once 'cebe/GithubMarkdown.php';
$parser = new cebe\markdown\GithubMarkdown;
}
$content = $parser->parse($content);
} else if ($lib == MDLIB_PD) {
require_once 'Parsedown/Parsedown.php';
$parser = new Parsedown;
$content = $parser->text($content);
}
return $content;
}
function leadingSpaceToNbsp($content) {
preg_match_all('/^\s+/um', $content, $matches, PREG_OFFSET_CAPTURE);
if ($matches) {
$matches0 = $matches[0];
$len = count($matches0) - 1;
for ($i = $len; $i >= 0; $i--) {
$match = $matches0[$i];
$content = substr_replace($content, str_replace(' ', "\xc2\xa0", $match[0]), $match[1], strlen($match[0])); // replace leading spaces to
}
}
return $content;
}
add_filter('the_content', 'markdownWb', 2);
add_filter('get_the_excerpt', 'markdownWb', 2); // if you need?
