111 lines
3.3 KiB
PHP
111 lines
3.3 KiB
PHP
<?php
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// {{{ License
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// This file is part of GNU social - https://www.gnu.org/software/social
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//
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// GNU social is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// GNU social is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with GNU social. If not, see <http://www.gnu.org/licenses/>.
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// }}}
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/**
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* HTML Abstraction
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*
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* @author Hugo Sales <hugo@fc.up.pt>
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* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
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* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
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*/
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namespace App\Util;
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use Functional as F;
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abstract class HTML
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{
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/**
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* Creates an HTML tag without attributes
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*
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* @param string $tag
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* @param array|string $content
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* @param bool $empty_tag
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*
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* @return array
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*/
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private static function tag(string $tag, $content = '', bool $empty_tag = false): array
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{
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return self::attr_tag($tag, '', $content);
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}
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/**
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* Create tag, possibly with attributes and indentation
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*
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* @param string $tag
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* @param array|string $attrs - element attributes
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* @param array|string $content - what goes inside the tag
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* @param bool $empty_tag
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*
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* @return array
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*/
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private static function attr_tag(string $tag, $attrs, $content = '', bool $empty_tag = false): array
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{
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$html = '<' . $tag . (is_string($attrs) ? ($attrs ? ' ' : '') . $attrs : self::attr($attrs));
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if (empty($content) || $empty_tag) {
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$html .= '>';
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} else {
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$html .= ">\n" . Common::indent($content) . "\n" . Common::indent("</{$tag}>");
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}
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return explode("\n", $html);
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}
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/**
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* Attribute with given optional value
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*
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* @param array $attrs
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*
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* @return string
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*/
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private static function attr(array $attrs): string
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{
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return ' ' . implode(' ', F\map($attrs, function ($val, $key, $_) {
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return "{$key} = '{$val}'";
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}));
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}
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/**
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* @param $html
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*
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* @return string
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*/
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public static function html($html): string
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{
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if (is_string($html)) {
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return $html;
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} elseif (is_array($html)) {
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$out = '';
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foreach ($html as $tag => $contents) {
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if (isset($contents['empty'])) {
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$out .= "<{$tag}>";
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} else {
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$attrs = isset($contents['attrs']) ? self::attr(array_shift($contents)) : '';
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$is_tag = preg_match('/[A-Za-z][A-Za-z0-9]*/', $tag);
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$inner = self::html($contents);
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$inner = $is_tag ? Common::indent($inner) : $inner;
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$out .= $is_tag ? "<{$tag}{$attrs}>\n{$inner}\n</{$tag}>\n" : $inner;
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}
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}
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return $out;
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} else {
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return '';
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}
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}
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}
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