2017-09-16 10:47:42 +00:00
<?php
register_module([
"name" => "Parsedown",
"version" => "0.9.9",
"author" => "Emanuil Rusev & Starbeamrainbowlabs",
"description" => "An upgraded (now default!) parser based on Emanuil Rusev's Parsedown Extra PHP library (https://github.com/erusev/parsedown-extra), which is licensed MIT. Please be careful, as this module adds some weight to your installation, and also *requires* write access to the disk on first load.",
"id" => "parser-parsedown",
"code" => function() {
global $settings;
$parser = new PeppermintParsedown();
$parser->setInternalLinkBase("?page=%s");
add_parser("parsedown", function($source) use ($parser) {
global $settings;
if($settings->clean_raw_html)
$parser->setMarkupEscaped(true);
else
$parser->setMarkupEscaped(false);
$result = $parser->text($source);
return $result;
});
// Wanted pages
statistic_add([
"id" => "wanted-pages",
"name" => "Wanted Pages",
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"type" => "page",
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"update" => function($old_stats) {
global $pageindex, $env;
$result = new stdClass(); // completed, value, state
$pages = [];
foreach($pageindex as $pagename => $pagedata) {
if(!file_exists($env->storage_prefix . $pagedata->filename)) {
continue;
}
$page_content = file_get_contents($env->storage_prefix . $pagedata->filename);
preg_match_all("/\[\[([^\]]+)\]\]/", $page_content, $linked_pages);
if(count($linked_pages[1]) === 0)
continue; // No linked pages here
foreach($linked_pages[1] as $linked_page) {
// Strip everything after the | and the #
if(strpos($linked_page, "|") !== false)
$linked_page = substr($linked_page, 0, strpos($linked_page, "|"));
if(strpos($linked_page, "#") !== false)
$linked_page = substr($linked_page, 0, strpos($linked_page, "#"));
if(strlen($linked_page) === 0)
continue;
// Make sure we try really hard to find this page in the
// pageindex
if(!empty($pageindex->{ucfirst($linked_page)}))
$linked_page = ucfirst($linked_page);
else if(!empty($pageindex->{ucwords($linked_page)}))
$linked_page = ucwords($linked_page);
// We're only interested in pages that don't exist
if(!empty($pageindex->$linked_page)) continue;
if(empty($pages[$linked_page]))
$pages[$linked_page] = 0;
$pages[$linked_page]++;
}
}
arsort($pages);
$result->value = $pages;
$result->completed = true;
return $result;
},
"render" => function($stats_data) {
$result = "<h2>$stats_data->name</h2>\n";
$result .= "<table class='wanted-pages'>\n";
$result .= "\t<tr><th>Page Name</th><th>Linking Pages</th></tr>\n";
foreach($stats_data->value as $pagename => $linking_pages) {
$result .= "\t<tr><td>$pagename</td><td>$linking_pages</td></tr>\n";
}
$result .= "</table>\n";
return $result;
}
]);
add_help_section("20-parser-default", "Editor Syntax",
"<p>$settings->sitename's editor uses an extended version of <a href='http://parsedown.org/'>Parsedown</a> to render pages, which is a fantastic open source Github flavoured markdown parser. You can find a quick reference guide on Github flavoured markdown <a href='https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet'>here</a> by <a href='https://github.com/adam-p/'>adam-p</a>, or if you prefer a book <a href='https://www.gitbook.com/book/roachhd/master-markdown/details'>Mastering Markdown</a> by KB is a good read, and free too!</p>
<h3>Tips</h3>
<ul>
<li>Put 2 spaces at the end of a line to add a soft line break. Leave a blank line to add a head line break (i.e. a new paragraph).</li>
<li>You can add an id to a header that you can link to. Put it in curly braces after the heading name like this: <code># Heading Name {#HeadingId}</code>. Then you can link to like like this: <code>[[Page name#HeadingId}]]</code>. You can also link to a heading id on the current page by omitting the page name: <code>[[#HeadingId]]</code>.</li>
</ul>
<h3>Extra Syntax</h3>
<p>$settings->sitename's editor also supports some extra custom syntax, some of which is inspired by <a href='https://mediawiki.org/'>Mediawiki</a>.
<table>
<tr><th style='width: 40%'>Type this</th><th style='width: 20%'>To get this</th><th>Comments</th></th>
<tr><td><code>[[Internal link]]</code></td><td><a href='?page=Internal%20link'>Internal Link</a></td><td>An internal link.</td></tr>
<tr><td><code>[[Display Text|Internal link]]</code></td><td><a href='?page=Internal%20link'>Display Text</a></td><td>An internal link with some display text.</td></tr>
<tr><td><code></code></td><td><img src='http://example.com/path/to/image.png' alt='Alt text' style='float: right; max-width: 256px; max-height: 256px;' /></td><td>An image floating to the right of the page that fits inside a 256px x 256px box, preserving aspect ratio.</td></tr>
<tr><td><code></code></td><td><figure><img src='http://example.com/path/to/image.png' alt='Alt text' style='max-width: 256px; max-height: 256px;' /><figcaption>Alt text</figcaption></figure></td><td>An image with a caption that fits inside a 256px x 256px box, preserving aspect ratio. The caption is taken from the alt text.</td></tr>
<tr><td><code></code></td><td><img src='index.php?action=preview&page=Files/Cheese.png' alt='Alt text' style='' /></td><td>An example of the short url syntax for images. Simply enter the page name of an image (or video / audio file), and Pepperminty Wiki will sort out the url for you.</td></tr>
</table>
<p>Note that the all image image syntax above can be mixed and matched to your liking. The <code>caption</code> option in particular must come last or next to last.</p>
<h4>Templating</h4>
<p>$settings->sitename also supports including one page in another page as a <em>template</em>. The syntax is very similar to that of Mediawiki. For example, <code>{{Announcement banner}}</code> will include the contents of the \"Announcement banner\" page, assuming it exists.</p>
<p>You can also use variables. Again, the syntax here is very similar to that of Mediawiki - they can be referenced in the included page by surrrounding the variable name in triple curly braces (e.g. <code>{{{Announcement text}}}</code>), and set when including a page with the bar syntax (e.g. <code>{{Announcement banner | importance = high | text = Maintenance has been planned for tonight.}}</code>). Currently the only restriction in templates and variables is that you may not include a closing curly brace (<code>}</code>) in the page name, variable name, or value.</p>
<h5>Special Variables</h5>
<p>$settings->sitename also supports a number of special built-in variables. Their syntax and function are described below:</p>
<table>
<tr><th>Type this</th><th>To get this</th></tr>
<tr><td><code>{{{@}}}</code></td><td>Lists all variables and their values in a table.</td></tr>
<tr><td><code>{{{#}}}</code></td><td>Shows a 'stack trace', outlining all the parent includes of the current page being parsed.</td></tr>
<tr><td><code>{{{~}}}</code></td><td>Outputs the requested page's name.</td></tr>
<tr><td><code>{{{*}}}</code></td><td>Outputs a comma separated list of all the subpages of the current page.</td></tr>
<tr><td><code>{{{+}}}</code></td><td>Shows a gallery containing all the files that are sub pages of the current page.</td></tr>
</table>");
}
]);
/*** Parsedown versions ***
* Parsedown Core: 1.6.0 *
* Parsedown Extra: 0.7.0 *
**************************/
$env->parsedown_paths = new stdClass();
$env->parsedown_paths->parsedown = "https://cdn.rawgit.com/erusev/parsedown/3ebbd730b5c2cf5ce78bc1bf64071407fc6674b7/Parsedown.php";
$env->parsedown_paths->parsedown_extra = "https://cdn.rawgit.com/erusev/parsedown-extra/11a44e076d02ffcc4021713398a60cd73f78b6f5/ParsedownExtra.php";
// Download parsedown and parsedown extra if they don't already exist
if(!file_exists("./Parsedown.php") || filesize("./Parsedown.php") === 0)
file_put_contents("./Parsedown.php", fopen($env->parsedown_paths->parsedown, "r"));
if(!file_exists("./ParsedownExtra.php") || filesize("./ParsedownExtra.php") === 0)
file_put_contents("./ParsedownExtra.php", fopen($env->parsedown_paths->parsedown_extra, "r"));
require_once("./Parsedown.php");
require_once("./ParsedownExtra.php");
/*
* ██████ █████ ██████ ███████ ███████ ██████ ██████ ██ ██ ███ ██
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██
* ██████ ███████ ██████ ███████ █████ ██ ██ ██ ██ ██ █ ██ ██ ██ ██
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ███ ██ ██ ██ ██
* ██ ██ ██ ██ ██ ███████ ███████ ██████ ██████ ███ ███ ██ ████
*
* ███████ ██ ██ ████████ ███████ ███ ██ ███████ ██ ██████ ███ ██ ███████
* ██ ██ ██ ██ ██ ████ ██ ██ ██ ██ ██ ████ ██ ██
* █████ ███ ██ █████ ██ ██ ██ ███████ ██ ██ ██ ██ ██ ██ ███████
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
* ███████ ██ ██ ██ ███████ ██ ████ ███████ ██ ██████ ██ ████ ███████
*/
class PeppermintParsedown extends ParsedownExtra
{
private $internalLinkBase = "./%s";
protected $maxParamDepth = 0;
protected $paramStack = [];
function __construct()
{
// Prioritise our internal link parsing over the regular link parsing
array_unshift($this->InlineTypes["["], "InternalLink");
// Prioritise our image parser over the regular image parser
array_unshift($this->InlineTypes["!"], "ExtendedImage");
$this->inlineMarkerList .= "{";
if(!isset($this->InlineTypes["{"]) or !is_array($this->InlineTypes["{"]))
$this->InlineTypes["{"] = [];
$this->InlineTypes["{"][] = "Template";
}
/*
* ████████ ███████ ███ ███ ██████ ██ █████ ████████ ██ ███ ██ ██████
* ██ ██ ████ ████ ██ ██ ██ ██ ██ ██ ██ ████ ██ ██
* ██ █████ ██ ████ ██ ██████ ██ ███████ ██ ██ ██ ██ ██ ██ ███
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
* ██ ███████ ██ ██ ██ ███████ ██ ██ ██ ██ ██ ████ ██████
*/
protected function inlineTemplate($fragment)
{
global $env, $pageindex;
// Variable parsing
if(preg_match("/\{\{\{([^}]+)\}\}\}/", $fragment["text"], $matches))
{
$params = [];
if(!empty($this->paramStack))
{
$stackEntry = array_slice($this->paramStack, -1)[0];
$params = !empty($stackEntry) ? $stackEntry["params"] : false;
}
$variableKey = trim($matches[1]);
$variableValue = false;
switch ($variableKey)
{
case "@": // Lists all variables and their values
if(!empty($params))
{
$variableValue = "<table>
<tr><th>Key</th><th>Value</th></tr>\n";
foreach($params as $key => $value)
{
$variableValue .= "\t<tr><td>" . $this->escapeText($key) . "</td><td>" . $this->escapeText($value) . "</td></tr>\n";
}
$variableValue .= "</table>";
}
break;
case "#": // Shows a stack trace
$variableValue = "<ol start=\"0\">\n";
$variableValue .= "\t<li>$env->page</li>\n";
foreach($this->paramStack as $curStackEntry)
{
$variableValue .= "\t<li>" . $curStackEntry["pagename"] . "</li>\n";
}
$variableValue .= "</ol>\n";
break;
case "~": // Show requested page's name
if(!empty($this->paramStack))
$variableValue = $this->escapeText($env->page);
break;
case "*": // Lists subpages
$subpages = get_subpages($pageindex, $env->page);
$variableValue = [];
foreach($subpages as $pagename => $depth)
{
$variableValue[] = $pagename;
}
$variableValue = implode(", ", $variableValue);
if(strlen($variableValue) === 0)
$variableValue = "<em>(none yet!)</em>";
break;
case "+": // Shows a file gallery for subpages with files
// If the upload module isn't present, then there's no point
// in checking for uploaded files
if(!module_exists("feature-upload"))
break;
$variableValue = [];
$subpages = get_subpages($pageindex, $env->page);
foreach($subpages as $pagename => $depth)
{
// Make sure that this is an uploaded file
if(!$pageindex->$pagename->uploadedfile)
continue;
$mime_type = $pageindex->$pagename->uploadedfilemime;
$previewSize = 300;
$previewUrl = "?action=preview&size=$previewSize&page=" . rawurlencode($pagename);
$previewHtml = "";
switch(substr($mime_type, 0, strpos($mime_type, "/")))
{
case "video":
$previewHtml .= "<video src='$previewUrl' controls preload='metadata'>$pagename</video>\n";
break;
case "audio":
$previewHtml .= "<audio src='$previewUrl' controls preload='metadata'>$pagename</audio>\n";
break;
case "application":
case "image":
default:
$previewHtml .= "<img src='$previewUrl' />\n";
break;
}
$previewHtml = "<a href='?page=" . rawurlencode($pagename) . "'>$previewHtml$pagename</a>";
$variableValue[$pagename] = "<li style='min-width: $previewSize" . "px; min-height: $previewSize" . "px;'>$previewHtml</li>";
}
if(count($variableValue) === 0)
$variableValue["default"] = "<li><em>(No files found)</em></li>\n";
$variableValue = implode("\n", $variableValue);
$variableValue = "<ul class='file-gallery'>$variableValue</ul>";
break;
}
if(isset($params[$variableKey]))
{
$variableValue = $params[$variableKey];
$variableValue = $this->escapeText($variableValue);
}
if($variableValue !== false)
{
return [
"extent" => strlen($matches[0]),
"markup" => $variableValue
];
}
}
else if(preg_match("/\{\{([^}]+)\}\}/", $fragment["text"], $matches))
{
$templateElement = $this->templateHandler($matches[1]);
if(!empty($templateElement))
{
return [
"extent" => strlen($matches[0]),
"element" => $templateElement
];
}
}
}
protected function templateHandler($source)
{
global $pageindex, $env;
$parts = preg_split("/\\||¦/", trim($source, "{}"));
$parts = array_map("trim", $parts);
// Extract the name of the template page
$templatePagename = array_shift($parts);
// If the page that we are supposed to use as the tempalte doesn't
// exist, then there's no point in continuing.
if(empty($pageindex->$templatePagename))
return false;
// Parse the parameters
$this->maxParamDepth++;
$params = [];
$i = 0;
foreach($parts as $part)
{
if(strpos($part, "=") !== false)
{
// This param contains an equals sign, so it's a named parameter
$keyValuePair = explode("=", $part, 2);
$keyValuePair = array_map("trim", $keyValuePair);
$params[$keyValuePair[0]] = $keyValuePair[1];
}
else
{
// This isn't a named parameter
$params["$i"] = trim($part);
$i++;
}
}
// Add the parsed parameters to the parameter stack
$this->paramStack[] = [
"pagename" => $templatePagename,
"params" => $params
];
$templateFilePath = $env->storage_prefix . $pageindex->$templatePagename->filename;
$parsedTemplateSource = $this->text(file_get_contents($templateFilePath));
// Remove the parsed parameters from the stack
array_pop($this->paramStack);
return [
"name" => "div",
"text" => $parsedTemplateSource,
"attributes" => [
"class" => "template"
]
];
}
/*
* ██ ███ ██ ████████ ███████ ██████ ███ ██ █████ ██
* ██ ████ ██ ██ ██ ██ ██ ████ ██ ██ ██ ██
* ██ ██ ██ ██ ██ █████ ██████ ██ ██ ██ ███████ ██
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
* ██ ██ ████ ██ ███████ ██ ██ ██ ████ ██ ██ ███████
*
* ██ ██ ███ ██ ██ ██ ███████
* ██ ██ ████ ██ ██ ██ ██
* ██ ██ ██ ██ ██ █████ ███████
* ██ ██ ██ ██ ██ ██ ██ ██
* ███████ ██ ██ ████ ██ ██ ███████
*/
protected function inlineInternalLink($fragment)
{
global $pageindex, $env;
if(preg_match('/^\[\[([^\]]*)\]\]([^\s!?",.()\[\]{}*=+\/]*)/u', $fragment["text"], $matches))
{
$linkPage = trim($matches[1]);
$display = $linkPage . trim($matches[2]);
if(strpos($matches[1], "|") !== false || strpos($matches[1], "¦") !== false)
{
// We have a bar character
$parts = preg_split("/\\||¦/", $matches[1], 2);
$linkPage = trim($parts[0]); // The page to link to
$display = trim($parts[1]); // The text to display
}
$hashCode = "";
if(strpos($linkPage, "#") !== false)
{
// We want to link to a subsection of a page
$hashCode = substr($linkPage, strpos($linkPage, "#") + 1);
$linkPage = substr($linkPage, 0, strpos($linkPage, "#"));
// If $linkPage is empty then we want to link to the current page
if(strlen($linkPage) === 0)
$linkPage = $env->page;
}
// If the page doesn't exist, check varying different
// capitalisations to see if it exists under some variant.
if(empty($pageindex->$linkPage))
{
if(!empty($pageindex->{ucfirst($linkPage)}))
$linkPage = ucfirst($linkPage);
else if(!empty($pageindex->{ucwords($linkPage)}))
$linkPage = ucwords($linkPage);
}
// Construct the full url
$linkUrl = str_replace(
"%s", rawurlencode($linkPage),
$this->internalLinkBase
);
if(strlen($hashCode) > 0)
$linkUrl .= "#$hashCode";
$result = [
"extent" => strlen($matches[0]),
"element" => [
"name" => "a",
"text" => $display,
"attributes" => [
"href" => $linkUrl
]
]
];
if(empty($pageindex->{makepathsafe($linkPage)}))
$result["element"]["attributes"]["class"] = "redlink";
return $result;
}
return;
}
/*
* ███████ ██ ██ ████████ ███████ ███ ██ ██████ ███████ ██████
* ██ ██ ██ ██ ██ ████ ██ ██ ██ ██ ██ ██
* █████ ███ ██ █████ ██ ██ ██ ██ ██ █████ ██ ██
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
* ███████ ██ ██ ██ ███████ ██ ████ ██████ ███████ ██████
*
* ██ ███ ███ █████ ██████ ███████ ███████
* ██ ████ ████ ██ ██ ██ ██ ██
* ██ ██ ████ ██ ███████ ██ ███ █████ ███████
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
* ██ ██ ██ ██ ██ ██████ ███████ ███████
*/
protected function inlineExtendedImage($fragment)
{
global $pageindex;
if(preg_match('/^!\[(.*)\]\(([^|¦)]+)\s*(?:(?:\||¦)([^|¦)]*))?(?:(?:\||¦)([^|¦)]*))?(?:(?:\||¦)([^)]*))?\)/', $fragment["text"], $matches))
{
/*
* 0 - Everything
* 1 - Alt text
* 2 - Url
* 3 - First param (optional)
* 4 - Second param (optional)
* 5 - Third param (optional)
*/
$altText = $matches[1];
$imageUrl = trim(str_replace("&", "&", $matches[2])); // Decode & to allow it in preview urls
$param1 = empty($matches[3]) ? false : strtolower(trim($matches[3]));
$param2 = empty($matches[4]) ? false : strtolower(trim($matches[4]));
$param3 = empty($matches[5]) ? false : strtolower(trim($matches[5]));
$floatDirection = false;
$imageSize = false;
$imageCaption = false;
$shortImageUrl = false;
if($this->isFloatValue($param1))
{
// Param 1 is a valid css float: ... value
$floatDirection = $param1;
$imageSize = $this->parseSizeSpec($param2);
}
else if($this->isFloatValue($param2))
{
// Param 2 is a valid css float: ... value
$floatDirection = $param2;
$imageSize = $this->parseSizeSpec($param1);
}
else if($this->isFloatValue($param3))
{
$floatDirection = $param3;
$imageSize = $this->parseSizeSpec($param1);
}
else if($param1 === false and $param2 === false)
{
// Neither params were specified
$floatDirection = false;
$imageSize = false;
}
else
{
// Neither of them are floats, but at least one is specified
// This must mean that the first param is a size spec like
// 250x128.
$imageSize = $this->parseSizeSpec($param1);
}
if($param1 !== false && strtolower(trim($param1)) == "caption")
$imageCaption = true;
if($param2 !== false && strtolower(trim($param2)) == "caption")
$imageCaption = true;
if($param3 !== false && strtolower(trim($param3)) == "caption")
$imageCaption = true;
//echo("Image url: $imageUrl, Pageindex entry: " . var_export(isset($pageindex->$imageUrl), true) . "\n");
if(isset($pageindex->$imageUrl) and $pageindex->$imageUrl->uploadedfile)
{
// We have a short url! Expand it.
$shortImageUrl = $imageUrl;
$imageUrl = "index.php?action=preview&size=" . max($imageSize["x"], $imageSize["y"]) ."&page=" . rawurlencode($imageUrl);
}
$style = "";
if($imageSize !== false)
$style .= " max-width: " . $imageSize["x"] . "px; max-height: " . $imageSize["y"] . "px;";
if($floatDirection)
$style .= " float: $floatDirection;";
$urlExtension = pathinfo($imageUrl, PATHINFO_EXTENSION);
$urlType = system_extension_mime_type($urlExtension);
$result = [];
switch(substr($urlType, 0, strpos($urlType, "/")))
{
case "audio":
$result = [
"extent" => strlen($matches[0]),
"element" => [
"name" => "audio",
"text" => $altText,
"attributes" => [
"src" => $imageUrl,
"controls" => "controls",
"preload" => "metadata",
"style" => trim($style)
]
]
];
break;
case "video":
$result = [
"extent" => strlen($matches[0]),
"element" => [
"name" => "video",
"text" => $altText,
"attributes" => [
"src" => $imageUrl,
"controls" => "controls",
"preload" => "metadata",
"style" => trim($style)
]
]
];
break;
case "image":
default:
// If we can't work out what it is, then assume it's an image
$result = [
"extent" => strlen($matches[0]),
"element" => [
"name" => "img",
"attributes" => [
"src" => $imageUrl,
"alt" => $altText,
"title" => $altText,
"style" => trim($style)
]
]
];
break;
}
// ~ Image linker ~
$imageHref = $shortImageUrl !== false ? "?page=" . rawurlencode($shortImageUrl) : $imageUrl;
$result["element"] = [
"name" => "a",
"attributes" => [
"href" => $imageHref
],
"text" => [$result["element"]],
"handler" => "elements"
];
// ~
if($imageCaption)
{
$rawStyle = $result["element"]["attributes"]["style"];
$containerStyle = preg_replace('/^.*float/', "float", $rawStyle);
$mediaStyle = preg_replace('/\s*float.*;/', "", $rawStyle);
$result["element"] = [
"name" => "figure",
"attributes" => [
"style" => $containerStyle
],
"text" => [
$result["element"],
[
"name" => "figcaption",
"text" => $altText
],
],
"handler" => "elements"
];
$result["element"]["text"][0]["attributes"]["style"] = $mediaStyle;
}
return $result;
}
}
# ~
# Utility Methods
# ~
private function isFloatValue($value)
{
return in_array(strtolower($value), [ "left", "right" ]);
}
private function parseSizeSpec($text)
{
if(strpos($text, "x") === false)
return false;
$parts = explode("x", $text, 2);
if(count($parts) != 2)
return false;
array_map("trim", $parts);
array_map("intval", $parts);
if(in_array(0, $parts))
return false;
return [
"x" => $parts[0],
"y" => $parts[1]
];
}
protected function escapeText($text)
{
return htmlentities($text, ENT_COMPAT | ENT_HTML5);
}
/**
* Sets the base url to be used for internal links. '%s' will be replaced
* with a URL encoded version of the page name.
* @param string $url The url to use when parsing internal links.
*/
public function setInternalLinkBase($url)
{
$this->internalLinkBase = $url;
}
}
?>
