mirror of
https://github.com/sbrl/Pepperminty-Wiki.git
synced 2024-11-22 04:23:01 +00:00
608 lines
24 KiB
PHP
608 lines
24 KiB
PHP
<?php
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register_module([
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"name" => "Parsedown",
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"version" => "0.9.8",
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"author" => "Emanuil Rusev & Starbeamrainbowlabs",
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"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.",
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"id" => "parser-parsedown",
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"code" => function() {
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global $settings;
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$parser = new PeppermintParsedown();
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$parser->setInternalLinkBase("?page=%s");
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add_parser("parsedown", function($source) use ($parser) {
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global $settings;
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if($settings->clean_raw_html)
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$parser->setMarkupEscaped(true);
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else
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$parser->setMarkupEscaped(false);
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$result = $parser->text($source);
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return $result;
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});
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add_help_section("20-parser-default", "Editor Syntax",
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"<p>$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>
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<h3>Tips</h3>
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<ul>
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<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>
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<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>
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</ul>
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<h3>Extra Syntax</h3>
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<p>$settings->sitename's editor also supports some extra custom syntax, some of which is inspired by <a href='https://mediawiki.org/'>Mediawiki</a>.
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<table>
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<tr><th style='width: 40%'>Type this</th><th style='width: 20%'>To get this</th><th>Comments</th></th>
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<tr><td><code>[[Internal link]]</code></td><td><a href='?page=Internal%20link'>Internal Link</a></td><td>An internal link.</td></tr>
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<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>
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<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>
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<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>
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<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>
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</table>
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<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>
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<h4>Templating</h4>
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<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>
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<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>
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<h5>Special Variables</h5>
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<p>$settings->sitename also supports a number of special built-in variables. Their syntax and function are described below:</p>
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<table>
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<tr><th>Type this</th><th>To get this</th></tr>
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<tr><td><code>{{{@}}}</code></td><td>Lists all variables and their values in a table.</td></tr>
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<tr><td><code>{{{#}}}</code></td><td>Shows a 'stack trace', outlining all the parent includes of the current page being parsed.</td></tr>
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<tr><td><code>{{{~}}}</code></td><td>Outputs the requested page's name.</td></tr>
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<tr><td><code>{{{*}}}</code></td><td>Outputs a comma separated list of all the subpages of the current page.</td></tr>
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<tr><td><code>{{{+}}}</code></td><td>Shows a gallery containing all the files that are sub pages of the current page.</td></tr>
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</table>");
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}
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]);
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/*** Parsedown versions ***
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* Parsedown Core: 1.6.0 *
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* Parsedown Extra: 0.7.0 *
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**************************/
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$env->parsedown_paths = new stdClass();
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$env->parsedown_paths->parsedown = "https://cdn.rawgit.com/erusev/parsedown/3ebbd730b5c2cf5ce78bc1bf64071407fc6674b7/Parsedown.php";
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$env->parsedown_paths->parsedown_extra = "https://cdn.rawgit.com/erusev/parsedown-extra/11a44e076d02ffcc4021713398a60cd73f78b6f5/ParsedownExtra.php";
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// Download parsedown and parsedown extra if they don't already exist
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if(!file_exists("./Parsedown.php") || filesize("./Parsedown.php") === 0)
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file_put_contents("./Parsedown.php", fopen($env->parsedown_paths->parsedown, "r"));
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if(!file_exists("./ParsedownExtra.php") || filesize("./ParsedownExtra.php") === 0)
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file_put_contents("./ParsedownExtra.php", fopen($env->parsedown_paths->parsedown_extra, "r"));
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require_once("./Parsedown.php");
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require_once("./ParsedownExtra.php");
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/*
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* ██████ █████ ██████ ███████ ███████ ██████ ██████ ██ ██ ███ ██
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██
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* ██████ ███████ ██████ ███████ █████ ██ ██ ██ ██ ██ █ ██ ██ ██ ██
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ███ ██ ██ ██ ██
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* ██ ██ ██ ██ ██ ███████ ███████ ██████ ██████ ███ ███ ██ ████
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*
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* ███████ ██ ██ ████████ ███████ ███ ██ ███████ ██ ██████ ███ ██ ███████
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* ██ ██ ██ ██ ██ ████ ██ ██ ██ ██ ██ ████ ██ ██
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* █████ ███ ██ █████ ██ ██ ██ ███████ ██ ██ ██ ██ ██ ██ ███████
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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* ███████ ██ ██ ██ ███████ ██ ████ ███████ ██ ██████ ██ ████ ███████
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*/
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class PeppermintParsedown extends ParsedownExtra
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{
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private $internalLinkBase = "./%s";
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protected $maxParamDepth = 0;
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protected $paramStack = [];
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function __construct()
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{
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// Prioritise our internal link parsing over the regular link parsing
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array_unshift($this->InlineTypes["["], "InternalLink");
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// Prioritise our image parser over the regular image parser
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array_unshift($this->InlineTypes["!"], "ExtendedImage");
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$this->inlineMarkerList .= "{";
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if(!isset($this->InlineTypes["{"]) or !is_array($this->InlineTypes["{"]))
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$this->InlineTypes["{"] = [];
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$this->InlineTypes["{"][] = "Template";
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}
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/*
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* ████████ ███████ ███ ███ ██████ ██ █████ ████████ ██ ███ ██ ██████
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* ██ ██ ████ ████ ██ ██ ██ ██ ██ ██ ██ ████ ██ ██
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* ██ █████ ██ ████ ██ ██████ ██ ███████ ██ ██ ██ ██ ██ ██ ███
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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* ██ ███████ ██ ██ ██ ███████ ██ ██ ██ ██ ██ ████ ██████
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*/
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protected function inlineTemplate($fragment)
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{
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global $env, $pageindex;
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// Variable parsing
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if(preg_match("/\{\{\{([^}]+)\}\}\}/", $fragment["text"], $matches))
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{
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$params = [];
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if(!empty($this->paramStack))
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{
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$stackEntry = array_slice($this->paramStack, -1)[0];
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$params = !empty($stackEntry) ? $stackEntry["params"] : false;
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}
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$variableKey = trim($matches[1]);
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$variableValue = false;
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switch ($variableKey)
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{
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case "@": // Lists all variables and their values
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if(!empty($params))
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{
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$variableValue = "<table>
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<tr><th>Key</th><th>Value</th></tr>\n";
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foreach($params as $key => $value)
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{
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$variableValue .= "\t<tr><td>" . $this->escapeText($key) . "</td><td>" . $this->escapeText($value) . "</td></tr>\n";
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}
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$variableValue .= "</table>";
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}
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break;
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case "#": // Shows a stack trace
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$variableValue = "<ol start=\"0\">\n";
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$variableValue .= "\t<li>$env->page</li>\n";
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foreach($this->paramStack as $curStackEntry)
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{
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$variableValue .= "\t<li>" . $curStackEntry["pagename"] . "</li>\n";
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}
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$variableValue .= "</ol>\n";
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break;
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case "~": // Show requested page's name
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if(!empty($this->paramStack))
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$variableValue = $this->escapeText($env->page);
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break;
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case "*": // Lists subpages
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$subpages = get_subpages($pageindex, $env->page);
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$variableValue = [];
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foreach($subpages as $pagename => $depth)
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{
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$variableValue[] = $pagename;
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}
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$variableValue = implode(", ", $variableValue);
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if(strlen($variableValue) === 0)
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$variableValue = "<em>(none yet!)</em>";
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break;
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case "+": // Shows a file gallery for subpages with files
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// If the upload module isn't present, then there's no point
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// in checking for uploaded files
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if(!module_exists("feature-upload"))
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break;
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$variableValue = [];
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$subpages = get_subpages($pageindex, $env->page);
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foreach($subpages as $pagename => $depth)
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{
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// Make sure that this is an uploaded file
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if(!$pageindex->$pagename->uploadedfile)
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continue;
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$mime_type = $pageindex->$pagename->uploadedfilemime;
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$previewSize = 300;
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$previewUrl = "?action=preview&size=$previewSize&page=" . rawurlencode($pagename);
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$previewHtml = "";
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switch(substr($mime_type, 0, strpos($mime_type, "/")))
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{
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case "video":
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$previewHtml .= "<video src='$previewUrl' controls preload='metadata'>$pagename</video>\n";
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break;
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case "audio":
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$previewHtml .= "<audio src='$previewUrl' controls preload='metadata'>$pagename</audio>\n";
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break;
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case "application":
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case "image":
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default:
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$previewHtml .= "<img src='$previewUrl' />\n";
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break;
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}
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$previewHtml = "<a href='?page=" . rawurlencode($pagename) . "'>$previewHtml$pagename</a>";
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$variableValue[$pagename] = "<li style='min-width: $previewSize" . "px; min-height: $previewSize" . "px;'>$previewHtml</li>";
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}
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if(count($variableValue) === 0)
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$variableValue["default"] = "<li><em>(No files found)</em></li>\n";
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$variableValue = implode("\n", $variableValue);
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$variableValue = "<ul class='file-gallery'>$variableValue</ul>";
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break;
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}
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if(isset($params[$variableKey]))
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{
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$variableValue = $params[$variableKey];
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$variableValue = $this->escapeText($variableValue);
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}
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if($variableValue !== false)
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{
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return [
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"extent" => strlen($matches[0]),
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"markup" => $variableValue
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];
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}
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}
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else if(preg_match("/\{\{([^}]+)\}\}/", $fragment["text"], $matches))
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{
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$templateElement = $this->templateHandler($matches[1]);
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if(!empty($templateElement))
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{
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return [
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"extent" => strlen($matches[0]),
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"element" => $templateElement
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];
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}
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}
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}
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protected function templateHandler($source)
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{
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global $pageindex, $env;
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$parts = preg_split("/\\||¦/", trim($source, "{}"));
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$parts = array_map("trim", $parts);
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// Extract the name of the template page
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$templatePagename = array_shift($parts);
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// If the page that we are supposed to use as the tempalte doesn't
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// exist, then there's no point in continuing.
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if(empty($pageindex->$templatePagename))
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return false;
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// Parse the parameters
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$this->maxParamDepth++;
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$params = [];
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$i = 0;
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foreach($parts as $part)
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{
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if(strpos($part, "=") !== false)
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{
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// This param contains an equals sign, so it's a named parameter
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$keyValuePair = explode("=", $part, 2);
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$keyValuePair = array_map("trim", $keyValuePair);
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$params[$keyValuePair[0]] = $keyValuePair[1];
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}
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else
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{
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// This isn't a named parameter
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$params["$i"] = trim($part);
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$i++;
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}
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}
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// Add the parsed parameters to the parameter stack
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$this->paramStack[] = [
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"pagename" => $templatePagename,
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"params" => $params
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];
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$templateFilePath = $env->storage_prefix . $pageindex->$templatePagename->filename;
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$parsedTemplateSource = $this->text(file_get_contents($templateFilePath));
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// Remove the parsed parameters from the stack
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array_pop($this->paramStack);
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return [
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"name" => "div",
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"text" => $parsedTemplateSource,
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"attributes" => [
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"class" => "template"
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]
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];
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}
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/*
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* ██ ███ ██ ████████ ███████ ██████ ███ ██ █████ ██
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* ██ ████ ██ ██ ██ ██ ██ ████ ██ ██ ██ ██
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* ██ ██ ██ ██ ██ █████ ██████ ██ ██ ██ ███████ ██
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
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* ██ ██ ████ ██ ███████ ██ ██ ██ ████ ██ ██ ███████
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*
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* ██ ██ ███ ██ ██ ██ ███████
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* ██ ██ ████ ██ ██ ██ ██
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* ██ ██ ██ ██ ██ █████ ███████
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* ██ ██ ██ ██ ██ ██ ██ ██
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* ███████ ██ ██ ████ ██ ██ ███████
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*/
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protected function inlineInternalLink($fragment)
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{
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global $pageindex, $env;
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if(preg_match('/^\[\[([^\]]*)\]\]([^\s!?",.()\[\]{}*=+\/]*)/u', $fragment["text"], $matches))
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{
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$display = $linkPage = trim($matches[1]) . trim($matches[2]);
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if(strpos($matches[1], "|") !== false || strpos($matches[1], "¦") !== false)
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{
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// We have a bar character
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$parts = preg_split("/\\||¦/", $matches[1], 2);
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$linkPage = trim($parts[0]); // The page to link to
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$display = trim($parts[1]); // The text to display
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}
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$hashCode = "";
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if(strpos($linkPage, "#") !== false)
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{
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// We want to link to a subsection of a page
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$hashCode = substr($linkPage, strpos($linkPage, "#") + 1);
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$linkPage = substr($linkPage, 0, strpos($linkPage, "#"));
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// If $linkPage is empty then we want to link to the current page
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if(strlen($linkPage) === 0)
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$linkPage = $env->page;
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}
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// If the page doesn't exist, check varying different
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// capitalisations to see if it exists under some variant.
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if(empty($pageindex->$linkPage))
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{
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if(!empty($pageindex->{ucfirst($linkPage)}))
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$linkPage = ucfirst($linkPage);
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else if(!empty($pageindex->{ucwords($linkPage)}))
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$linkPage = ucwords($linkPage);
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}
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// Construct the full url
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$linkUrl = str_replace(
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"%s", rawurlencode($linkPage),
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$this->internalLinkBase
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);
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if(strlen($hashCode) > 0)
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$linkUrl .= "#$hashCode";
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$result = [
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"extent" => strlen($matches[0]),
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"element" => [
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"name" => "a",
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"text" => $display,
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"attributes" => [
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"href" => $linkUrl
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]
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]
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];
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if(empty($pageindex->{makepathsafe($linkPage)}))
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$result["element"]["attributes"]["class"] = "redlink";
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return $result;
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}
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return;
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}
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/*
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* ███████ ██ ██ ████████ ███████ ███ ██ ██████ ███████ ██████
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* ██ ██ ██ ██ ██ ████ ██ ██ ██ ██ ██ ██
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* █████ ███ ██ █████ ██ ██ ██ ██ ██ █████ ██ ██
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* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
* ███████ ██ ██ ██ ███████ ██ ████ ██████ ███████ ██████
|
|
*
|
|
* ██ ███ ███ █████ ██████ ███████ ███████
|
|
* ██ ████ ████ ██ ██ ██ ██ ██
|
|
* ██ ██ ████ ██ ███████ ██ ███ █████ ███████
|
|
* ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
|
|
* ██ ██ ██ ██ ██ ██████ ███████ ███████
|
|
*/
|
|
protected function inlineExtendedImage($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;
|
|
}
|
|
}
|
|
|
|
?>
|