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- <?php
- namespace fphammerle\helpers;
- class HtmlHelper
- {
- public static function encode($string)
- {
- return htmlspecialchars($string, ENT_QUOTES | ENT_SUBSTITUTE);
- }
- private static function _renderTagAttributes(array $attributes = [])
- {
- return StringHelper::implode(' ', ArrayHelper::mapIfSet(
- $attributes,
- function($k, $v) {
- if($v === true) {
- return sprintf('%s="%s"', $k, $k);
- } elseif($v === false) {
- return null;
- } else {
- return sprintf('%s="%s"', $k, self::encode($v));
- }
- }
- ));
- }
- public static function voidTag($tag_name, array $attributes = [])
- {
- if($tag_name === null) {
- return null;
- } elseif(!is_string($tag_name)) {
- throw new \TypeError(
- sprintf('expected string or null as tag name, %s given', gettype($tag_name))
- );
- } else {
- return sprintf(
- '<%s%s />',
- $tag_name,
- StringHelper::prepend(' ', self::_renderTagAttributes($attributes))
- );
- }
- }
- public static function startTag($tag_name, array $attributes = [])
- {
- if($tag_name === null) {
- return null;
- } elseif(!is_string($tag_name)) {
- throw new \TypeError(
- sprintf('expected string or null as tag name, %s given', gettype($tag_name))
- );
- } else {
- return sprintf(
- '<%s%s>',
- $tag_name,
- StringHelper::prepend(' ', self::_renderTagAttributes($attributes))
- );
- }
- }
- public static function endTag($name)
- {
- if($name === null) {
- return null;
- } elseif(!is_string($name)) {
- throw new \TypeError(
- sprintf('expected string or null as name, %s given', gettype($name))
- );
- } else {
- return '</' . $name . '>';
- }
- }
- public static function nonVoidTag($tag_name, $content, array $attributes = [])
- {
- // @see https://www.w3.org/TR/html-markup/syntax.html#syntax-elements
- return StringHelper::embed(
- self::startTag($tag_name, $attributes),
- $content,
- self::endTag($tag_name)
- );
- }
- }
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