* @link http://getkirby.com * @copyright Bastian Allgeier * @license http://www.opensource.org/licenses/mit-license.php MIT License */ class Html { /** * An internal store for a html entities translation table * * @return array */ public static $entities = array( ' ' => ' ', '¡' => '¡', '¢' => '¢', '£' => '£', '¤' => '¤', '¥' => '¥', '¦' => '¦', '§' => '§', '¨' => '¨', '©' => '©', 'ª' => 'ª', '«' => '«', '¬' => '¬', '­' => '­', '®' => '®', '¯' => '¯', '°' => '°', '±' => '±', '²' => '²', '³' => '³', '´' => '´', 'µ' => 'µ', '¶' => '¶', '·' => '·', '¸' => '¸', '¹' => '¹', 'º' => 'º', '»' => '»', '¼' => '¼', '½' => '½', '¾' => '¾', '¿' => '¿', 'À' => 'À', 'Á' => 'Á', 'Â' => 'Â', 'Ã' => 'Ã', 'Ä' => 'Ä', 'Å' => 'Å', 'Æ' => 'Æ', 'Ç' => 'Ç', 'È' => 'È', 'É' => 'É', 'Ê' => 'Ê', 'Ë' => 'Ë', 'Ì' => 'Ì', 'Í' => 'Í', 'Î' => 'Î', 'Ï' => 'Ï', 'Ð' => 'Ð', 'Ñ' => 'Ñ', 'Ò' => 'Ò', 'Ó' => 'Ó', 'Ô' => 'Ô', 'Õ' => 'Õ', 'Ö' => 'Ö', '×' => '×', 'Ø' => 'Ø', 'Ù' => 'Ù', 'Ú' => 'Ú', 'Û' => 'Û', 'Ü' => 'Ü', 'Ý' => 'Ý', 'Þ' => 'Þ', 'ß' => 'ß', 'à' => 'à', 'á' => 'á', 'â' => 'â', 'ã' => 'ã', 'ä' => 'ä', 'å' => 'å', 'æ' => 'æ', 'ç' => 'ç', 'è' => 'è', 'é' => 'é', 'ê' => 'ê', 'ë' => 'ë', 'ì' => 'ì', 'í' => 'í', 'î' => 'î', 'ï' => 'ï', 'ð' => 'ð', 'ñ' => 'ñ', 'ò' => 'ò', 'ó' => 'ó', 'ô' => 'ô', 'õ' => 'õ', 'ö' => 'ö', '÷' => '÷', 'ø' => 'ø', 'ù' => 'ù', 'ú' => 'ú', 'û' => 'û', 'ü' => 'ü', 'ý' => 'ý', 'þ' => 'þ', 'ÿ' => 'ÿ', 'ƒ' => 'ƒ', 'Α' => 'Α', 'Β' => 'Β', 'Γ' => 'Γ', 'Δ' => 'Δ', 'Ε' => 'Ε', 'Ζ' => 'Ζ', 'Η' => 'Η', 'Θ' => 'Θ', 'Ι' => 'Ι', 'Κ' => 'Κ', 'Λ' => 'Λ', 'Μ' => 'Μ', 'Ν' => 'Ν', 'Ξ' => 'Ξ', 'Ο' => 'Ο', 'Π' => 'Π', 'Ρ' => 'Ρ', 'Σ' => 'Σ', 'Τ' => 'Τ', 'Υ' => 'Υ', 'Φ' => 'Φ', 'Χ' => 'Χ', 'Ψ' => 'Ψ', 'Ω' => 'Ω', 'α' => 'α', 'β' => 'β', 'γ' => 'γ', 'δ' => 'δ', 'ε' => 'ε', 'ζ' => 'ζ', 'η' => 'η', 'θ' => 'θ', 'ι' => 'ι', 'κ' => 'κ', 'λ' => 'λ', 'μ' => 'μ', 'ν' => 'ν', 'ξ' => 'ξ', 'ο' => 'ο', 'π' => 'π', 'ρ' => 'ρ', 'ς' => 'ς', 'σ' => 'σ', 'τ' => 'τ', 'υ' => 'υ', 'φ' => 'φ', 'χ' => 'χ', 'ψ' => 'ψ', 'ω' => 'ω', 'ϑ' => 'ϑ', 'ϒ' => 'ϒ', 'ϖ' => 'ϖ', '•' => '•', '…' => '…', '′' => '′', '″' => '″', '‾' => '‾', '⁄' => '⁄', '℘' => '℘', 'ℑ' => 'ℑ', 'ℜ' => 'ℜ', '™' => '™', 'ℵ' => 'ℵ', '←' => '←', '↑' => '↑', '→' => '→', '↓' => '↓', '↔' => '↔', '↵' => '↵', '⇐' => '⇐', '⇑' => '⇑', '⇒' => '⇒', '⇓' => '⇓', '⇔' => '⇔', '∀' => '∀', '∂' => '∂', '∃' => '∃', '∅' => '∅', '∇' => '∇', '∈' => '∈', '∉' => '∉', '∋' => '∋', '∏' => '∏', '∑' => '∑', '−' => '−', '∗' => '∗', '√' => '√', '∝' => '∝', '∞' => '∞', '∠' => '∠', '∧' => '∧', '∨' => '∨', '∩' => '∩', '∪' => '∪', '∫' => '∫', '∴' => '∴', '∼' => '∼', '≅' => '≅', '≈' => '≈', '≠' => '≠', '≡' => '≡', '≤' => '≤', '≥' => '≥', '⊂' => '⊂', '⊃' => '⊃', '⊄' => '⊄', '⊆' => '⊆', '⊇' => '⊇', '⊕' => '⊕', '⊗' => '⊗', '⊥' => '⊥', '⋅' => '⋅', '⌈' => '⌈', '⌉' => '⌉', '⌊' => '⌊', '⌋' => '⌋', '⟨' => '〈', '⟩' => '〉', '◊' => '◊', '♠' => '♠', '♣' => '♣', '♥' => '♥', '♦' => '♦', '"' => '"', '&' => '&', '<' => '<', '>' => '>', 'Œ' => 'Œ', 'œ' => 'œ', 'Š' => 'Š', 'š' => 'š', 'Ÿ' => 'Ÿ', 'ˆ' => 'ˆ', '˜' => '˜', ' ' => ' ', ' ' => ' ', ' ' => ' ', '‌' => '‌', '‍' => '‍', '‎' => '‎', '‏' => '‏', '–' => '–', '—' => '—', '‘' => '‘', '’' => '’', '‚' => '‚', '“' => '“', '”' => '”', '„' => '„', '†' => '†', '‡' => '‡', '‰' => '‰', '‹' => '‹', '›' => '›', '€' => '€' ); /** * Checks if a tag is self-closing * * @param string $tag * @return param */ public static function isVoid($tag) { $void = array( 'area', 'base', 'br', 'col', 'command', 'embed', 'hr', 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr', ); return in_array(strtolower($tag), $void); } /** * Returns the full array with all HTML entities * * @return array */ public static function entities() { return static::$entities; } /** * Converts a string to a html-safe string * * @param string $string * @param boolean $keepTags True: lets stuff inside html tags untouched. * @return string The html string */ public static function encode($string, $keepTags = true) { if($keepTags) { return stripslashes(implode('', preg_replace_callback('/^([^<].+[^>])$/', function($match) { return htmlentities($match[1], ENT_COMPAT, 'utf-8'); }, preg_split('/(<.+?>)/', $string, -1, PREG_SPLIT_DELIM_CAPTURE)))); } else { return htmlentities($string, ENT_COMPAT, 'utf-8'); } } /** * Removes all html tags and encoded chars from a string * * * * echo html::decode('some crazy stuff'); * // output: some uber crazy stuff * * * * @param string $string * @return string The html string */ public static function decode($string) { $string = strip_tags($string); return html_entity_decode($string, ENT_COMPAT, 'utf-8'); } /** * Converts lines in a string into html breaks * * @param string $string * @return string */ public static function breaks($string) { return nl2br($string); } /** * Generates an Html tag with optional content and attributes * * @param string $name The name of the tag, i.e. "a" * @param mixed $content The content if availble. Pass null to generate a self-closing tag, Pass an empty string to generate empty content * @param array $attr An associative array with additional attributes for the tag * @return string The generated Html */ public static function tag($name, $content = null, $attr = array()) { if(is_array($content)) { $attr = $content; $content = null; } $html = '<' . $name; $attr = static::attr($attr); if(!empty($attr)) $html .= ' ' . $attr; if(static::isVoid($name)) { $html .= '>'; } else { $html .= '>' . $content . ''; } return $html; } /** * Generates a single attribute or a list of attributes * * @param string $name mixed string: a single attribute with that name will be generated. array: a list of attributes will be generated. Don't pass a second argument in that case. * @param string $value if used for a single attribute, pass the content for the attribute here * @return string the generated html */ public static function attr($name, $value = null) { if(is_array($name)) { $attributes = array(); foreach($name as $key => $val) { $a = static::attr($key, $val); if($a) $attributes[] = $a; } return implode(' ', $attributes); } if(empty($value) && $value !== '0' && $value !== 0) { return false; } else if($value === ' ') { return strtolower($name) . '=""'; } else if(is_bool($value)) { return $value === true ? strtolower($name) : ''; } else { return strtolower($name) . '="' . ( is_array($value) ? implode(' ', $value) : $value ) . '"'; } } /** * Generates an a tag * * @param string $href The url for the a tag * @param mixed $text The optional text. If null, the url will be used as text * @param array $attr Additional attributes for the tag * @return string the generated html */ public static function a($href, $text = null, $attr = array()) { $attr = array_merge(array('href' => $href), $attr); if(empty($text)) $text = $href; return static::tag('a', $text, $attr); } /** * Generates an "a mailto" tag * * @param string $email The url for the a tag * @param mixed $text The optional text. If null, the url will be used as text * @param array $attr Additional attributes for the tag * @return string the generated html */ public static function email($email, $text = null, $attr = array()) { if(empty($text)) { // show only the eMail address without additional parameters (if the 'text' argument is empty) $text = str::encode(a::first(str::split($email, '?'))); } $email = str::encode($email); $attr = array_merge(array('href' => 'mailto:' . $email), $attr); return static::tag('a', $text, $attr); } /** * Generates an img tag * * @param string $src The url of the image * @param array $attr Additional attributes for the image tag * @return string the generated html */ public static function img($src, $attr = array()) { $attr = array_merge(array('src' => $src, 'alt' => pathinfo($src, PATHINFO_FILENAME)), $attr); return static::tag('img', null, $attr); } /** * Generates a HTML5 shiv script tag with additional comments for older IEs * * @return string the generated html */ public static function shiv() { return '' . PHP_EOL; } }