82 lines
3.3 KiB
PHP
82 lines
3.3 KiB
PHP
<?php
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require_once 'lib/ext/MyParsedown.php';
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require_once 'lib/posts.php';
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class markup {
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public static function markdownToHtml(string $md,
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bool $use_image_previews = true,
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?PostLanguage $lang = null,
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bool $no_paragraph = false): string {
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$pd = new MyParsedown(useImagePreviews: $use_image_previews, lang: $lang);
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$html = $pd->text($md);
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if ($no_paragraph)
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$html = preg_replace('/<p>(.*?)<\/p>/', '$1', $html);
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else {
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// collect references
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$re = '/^<p>(\[([io]?\d{1,2})]) (.*?)<\/p>/ms';
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$result = preg_match_all($re, $html, $matches);
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if (pcre_no_error($result)) {
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$reftitles_map = [];
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foreach ($matches[2] as $i => $refname) {
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$reftitles_map[$refname] = trim(htmlspecialchars_decode(strip_tags($matches[3][$i])));
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}
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$span_opening_tag = '<span class="blog-footnote-ref">';
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$html = preg_replace($re, '<p class="blog-footnote-line" id="footnote_$2">'.$span_opening_tag.'$1</span> $3</p>', $html);
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$re = '/'.implode('|', array_map(fn($m) => '(?:'.$span_opening_tag.')?'.preg_quote($m, '/'), $matches[1])).'/';
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$html = preg_replace_callback($re,
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function($match) use ($span_opening_tag, $reftitles_map) {
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if (str_starts_with($match[0], $span_opening_tag))
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return $match[0];
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if (!preg_match('/\[([io]?\d{1,2})]/', $match[0], $refmatch))
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return $match[0];
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$refname = $refmatch[1];
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$reftitle = $reftitles_map[$refname];
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return '<a href="#footnote_'.$refname.'" class="blog-ref" title="'.htmlescape($reftitle).'">'.$match[0].'</a>';
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}, $html);
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}
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}
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return $html;
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}
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public static function toc(string $md): string {
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$pd = new MyParsedown([
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'toc' => [
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'lowercase' => true,
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'transliterate' => true,
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'urlencode' => false,
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'headings' => ['h1', 'h2', 'h3']
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]
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]);
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$pd->text($md);
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return $pd->contentsList();
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}
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public static function htmlToText(string $html): string {
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$text = html_entity_decode(strip_tags($html));
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$lines = explode("\n", $text);
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$lines = array_map('trim', $lines);
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$text = implode("\n", $lines);
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$text = preg_replace("/(\r?\n){2,}/", "\n\n", $text);
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return $text;
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}
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public static function htmlImagesFix(string $html, bool $is_retina, string $user_theme): string {
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global $config;
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$is_dark_theme = $user_theme === 'dark';
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return preg_replace_callback(
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'/('.preg_quote($config['uploads_path'], '/').'\/\w{8}\/)([ap])(\d+)x(\d+)(\.jpg)/',
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function($match) use ($is_retina, $is_dark_theme) {
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$mult = $is_retina ? 2 : 1;
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$is_alpha = $match[2] == 'a';
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return $match[1].$match[2].(intval($match[3])*$mult).'x'.(intval($match[4])*$mult).($is_alpha && $is_dark_theme ? '_dark' : '').$match[5];
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},
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$html
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);
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}
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} |