d65714fa47
Adds <link> elements for each additional output format in the <head> of HTML format output to allow RSS readers to find the actual feeds directly from the HTML page.
148 lines
3.8 KiB
PHP
148 lines
3.8 KiB
PHP
<?php
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class HtmlFormat extends FormatAbstract {
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const MIME_TYPE = 'text/html';
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public function stringify(){
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$extraInfos = $this->getExtraInfos();
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$title = htmlspecialchars($extraInfos['name']);
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$uri = htmlspecialchars($extraInfos['uri']);
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// Dynamically build buttons for all formats (except HTML)
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$formatFac = new FormatFactory();
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$formatFac->setWorkingDir(PATH_LIB_FORMATS);
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$buttons = '';
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$links = '';
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foreach($formatFac->getFormatNames() as $format) {
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if(strcasecmp($format, 'HTML') === 0) {
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continue;
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}
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$query = str_replace('format=Html', 'format=' . $format, htmlentities($_SERVER['QUERY_STRING']));
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$buttons .= $this->buildButton($format, $query) . PHP_EOL;
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$mime = $formatFac->create($format)->getMimeType();
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$links .= $this->buildLink($format, $query, $mime) . PHP_EOL;
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}
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$entries = '';
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foreach($this->getItems() as $item) {
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$entryAuthor = $item->getAuthor() ? '<br /><p class="author">by: ' . $item->getAuthor() . '</p>' : '';
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$entryTitle = $this->sanitizeHtml(strip_tags($item->getTitle()));
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$entryUri = $item->getURI() ?: $uri;
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$entryTimestamp = '';
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if($item->getTimestamp()) {
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$entryTimestamp = '<time datetime="'
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. date(DATE_ATOM, $item->getTimestamp())
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. '">'
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. date(DATE_ATOM, $item->getTimestamp())
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. '</time>';
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}
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$entryContent = '';
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if($item->getContent()) {
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$entryContent = '<div class="content">'
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. $this->sanitizeHtml($item->getContent())
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. '</div>';
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}
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$entryEnclosures = '';
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if(!empty($item->getEnclosures())) {
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$entryEnclosures = '<div class="attachments"><p>Attachments:</p>';
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foreach($item->getEnclosures() as $enclosure) {
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$url = $this->sanitizeHtml($enclosure);
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$entryEnclosures .= '<li class="enclosure"><a href="'
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. $url
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. '">'
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. substr($url, strrpos($url, '/') + 1)
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. '</a></li>';
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}
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$entryEnclosures .= '</div>';
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}
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$entryCategories = '';
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if(!empty($item->getCategories())) {
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$entryCategories = '<div class="categories"><p>Categories:</p>';
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foreach($item->getCategories() as $category) {
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$entryCategories .= '<li class="category">'
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. $this->sanitizeHtml($category)
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. '</li>';
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}
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$entryCategories .= '</div>';
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}
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$entries .= <<<EOD
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<section class="feeditem">
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<h2><a class="itemtitle" href="{$entryUri}">{$entryTitle}</a></h2>
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{$entryTimestamp}
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{$entryAuthor}
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{$entryContent}
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{$entryEnclosures}
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{$entryCategories}
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</section>
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EOD;
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}
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$charset = $this->getCharset();
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/* Data are prepared, now let's begin the "MAGIE !!!" */
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$toReturn = <<<EOD
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="{$charset}">
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>{$title}</title>
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<link href="static/HtmlFormat.css" rel="stylesheet">
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<link rel="icon" type="image/png" href="static/favicon.png">
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{$links}
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<meta name="robots" content="noindex, follow">
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</head>
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<body>
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<h1 class="pagetitle"><a href="{$uri}" target="_blank">{$title}</a></h1>
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<div class="buttons">
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<a href="./#bridge-{$_GET['bridge']}"><button class="backbutton">← back to rss-bridge</button></a>
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{$buttons}
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</div>
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{$entries}
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</body>
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</html>
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EOD;
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// Remove invalid characters
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ini_set('mbstring.substitute_character', 'none');
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$toReturn = mb_convert_encoding($toReturn, $this->getCharset(), 'UTF-8');
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return $toReturn;
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}
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public function display() {
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$this
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->setContentType(self::MIME_TYPE . '; charset=' . $this->getCharset())
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->callContentType();
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return parent::display();
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}
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private function buildButton($format, $query) {
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return <<<EOD
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<a href="./?{$query}"><button class="rss-feed">{$format}</button></a>
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EOD;
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}
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private function buildLink($format, $query, $mime) {
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return <<<EOD
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<link href="./?{$query}" title="{$format}" rel="alternate" type="{$mime}">
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EOD;
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}
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}
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