([^<]*)<\/a><\/p>/',
'$2
',
$html,
);
$styles = [
'h1' => 'margin:0 0 14px;font-size:20px;font-weight:700;letter-spacing:-.02em',
'h2' => 'margin:0 0 12px;font-size:17px;font-weight:700;letter-spacing:-.02em',
'h3' => 'margin:0 0 10px;font-size:15px;font-weight:700',
'p' => 'margin:0 0 14px',
'ul' => 'margin:0 0 14px;padding-left:22px',
'ol' => 'margin:0 0 14px;padding-left:22px',
'blockquote' => 'margin:0 0 14px;padding:14px 16px;border-left:3px solid '.$line.';background:#f2f6fb;border-radius:0 10px 10px 0',
'a' => 'color:'.$accent,
'code' => 'font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;background:#f2f6fb;padding:1px 5px;border-radius:5px',
'hr' => 'border:0;border-top:1px solid #e8edf4;margin:18px 0',
];
foreach ($styles as $tag => $style) {
// Only bare tags: the button above already carries its own style.
$html = preg_replace('/<'.$tag.'(?=[\s>\/])(?![^>]*\bstyle=)/', '<'.$tag.' style="'.$style.'"', $html);
}
return $html;
}
/** The plain-text alternative. Links go out raw: an & here breaks them in a text-only client. */
public static function text(string $html): string
{
$text = preg_replace_callback('/]*href="([^"]*)"[^>]*>(.*?)<\/a>/is', function ($m) {
$label = trim(strip_tags($m[2]));
return $label === '' || $label === $m[1] ? $m[1] : $label.': '.$m[1];
}, $html);
$text = preg_replace('/\n?/i', "\n", $text);
$text = preg_replace('/\n?/i', "---\n\n", $text);
$text = preg_replace('/]*>/i', '- ', $text);
$text = preg_replace('/<\/li>\n?/i', "\n", $text);
$text = preg_replace('/<\/(?:p|h[1-6]|blockquote|ul|ol|pre|div)>\n?/i', "\n\n", $text);
$text = html_entity_decode(strip_tags($text), ENT_QUOTES | ENT_HTML5, 'UTF-8');
$text = preg_replace('/[ \t]+\n/', "\n", $text);
$text = preg_replace('/\n{3,}/', "\n\n", $text);
return trim($text);
}
}