tableberg / includes / Utils / HtmlUtils.php

HtmlUtils.php in Tableberg – Simple Gutenberg Table Block 0.4.1, at includes/Utils/HtmlUtils.php

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1	<?php
2
3	namespace Tableberg\Utils;
4
5	class HtmlUtils
6	{
7
8	/**
9	* Insert code in the beginning of the offset'th specified tag
10	*
11	* @param string $content
12	* @param string $tag
13	* @param string $code
14	* @param int $offset
15	* @return string new content with added attributes
16	*/
17	public static function insert_inside_tag($content, $tag, $code, $offset = 0)
18	{
19	$tag = '<' . $tag;
20	$idx = strpos($content, $tag, $offset);
21	if ($idx === false) {
22	return $content;
23	}
24	$lidx = strpos($content, '>', $idx + 1);
25	if ($lidx === false) {
26	return $content;
27	}
28	return substr_replace($content, $code, $lidx + 1, 0);
29	}
30	/**
31	* Add attributes to the offset'th specified tag
32	*
33	* @param string $content
34	* @param string $tag
35	* @param string $attr_str
36	* @param int $offset
37	* @return string new content with added attributes
38	*/
39	public static function add_attrs_to_tag($content, $tag, $attr_str, $offset = 0)
40	{
41	$tag = '<' . $tag;
42	$idx = strpos($content, $tag, $offset);
43	if ($idx === false) {
44	return $content;
45	}
46	return substr_replace($content, $tag . " " . $attr_str." ", $idx, strlen($tag) + 1);
47	}
48
49	/**
50	* Replace attributes of the offset'th specified tag
51	*
52	* @param string $content
53	* @param string $tag
54	* @param string $attr_str
55	* @param int $offset
56	* @return string new content with added attributes
57	*/
58	public static function replace_attrs_of_tag($content, $tag, $attr_str, $offset = 0)
59	{
60	$tag = '<' . $tag;
61	$fidx = strpos($content, $tag, $offset);
62	if ($fidx === false) {
63	return $content;
64	}
65	$lidx = strpos($content, '>', $fidx);
66	if ($lidx === false) {
67	return $content;
68	}
69	return substr_replace($content, $tag . " " . $attr_str . ">", $fidx, $lidx - $fidx + 1);
70	}
71
72	/**
73	* Replace closing of the offset'th specified tag
74	*
75	* @param string $content
76	* @param string $tag
77	* @param string $replacement
78	* @param int $offset
79	* @return string new content with added attributes
80	*/
81	public static function replace_closing_tag($content, $tag, $replacement, $offset = -1)
82	{
83	$tag = '</' . $tag . '>';
84	$idx = strrpos($content, $tag, $offset);
85	if ($idx === false) {
86	return $content;
87	}
88
89	return substr_replace($content, $replacement, $idx, strlen($tag));
90	}
91
92	/**
93	* Append attribute value to the offset'th specified tag
94	* <div class"abc"></div> -> <div class"abc newclass"></div>
95	*
96	* @param string $content
97	* @param string $tag
98	* @param string $add
99	* @param string $attr
100	* @param int $offset
101	* @return string new content with added classes
102	*/
103	public static function append_attr_value($content, $tag, $add, $attr, $offset = 0, &$cursor = false)
104	{
105	$idx = strpos($content, '<' . $tag, $offset);
106	if ($idx === false) {
107	return $content;
108	}
109	$lidx = strpos($content, '>', $idx + 1);
110	if ($lidx === false) {
111	return $content;
112	}
113	$cursor = $lidx;
114	$tagDes = substr($content, $idx, $lidx - $idx);
115	$count = 0;
116	$tagDes = preg_replace("/$attr=\"(.*)\"/", "$attr=\"$1" . $add . "\"", $tagDes, -1, $count);
117	if ($count == 0) {
118	$tagDes = substr_replace($tagDes, " $attr=\"$add\"", strlen($tag) + 1, 0);
119	}
120	return substr_replace($content, $tagDes, $idx, $lidx - $idx);
121	}
122
123	}