autoptimize / classes / autoptimizeHTML.php

autoptimizeHTML.php in Autoptimize 2.6.2, at classes/autoptimizeHTML.php

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1	<?php
2	/**
3	* Handles minifying HTML markup.
4	*/
5
6	if ( ! defined( 'ABSPATH' ) ) {
7	exit;
8	}
9
10	class autoptimizeHTML extends autoptimizeBase
11	{
12	/**
13	* Whether HTML comments are kept.
14	*
15	* @var bool
16	*/
17	private $keepcomments = false;
18
19	/** @var bool */
20	private $forcexhtml = false;
21
22	/**
23	* Things to exclude from being minifed.
24	*
25	* @var array
26	*/
27	private $exclude = array(
28	'<!-- ngg_resource_manager_marker -->',
29	'<!--noindex-->',
30	'<!--/noindex-->',
31	);
32
33	public function read( $options )
34	{
35	// Remove the HTML comments?
36	$this->keepcomments = (bool) $options['keepcomments'];
37
38	// Filter to force xhtml.
39	$this->forcexhtml = (bool) apply_filters( 'autoptimize_filter_html_forcexhtml', false );
40
41	// Filterable strings to be excluded from HTML minification.
42	$exclude = apply_filters( 'autoptimize_filter_html_exclude', '' );
43	if ( '' !== $exclude ) {
44	$exclude_arr = array_filter( array_map( 'trim', explode( ',', $exclude ) ) );
45	$this->exclude = array_merge( $exclude_arr, $this->exclude );
46	}
47
48	// Nothing else for HTML!
49	return true;
50	}
51
52	/**
53	* Minifies HTML.
54	*
55	* @return bool
56	*/
57	public function minify()
58	{
59	$noptimize = apply_filters( 'autoptimize_filter_html_noptimize', false, $this->content );
60	if ( $noptimize ) {
61	return false;
62	}
63
64	// Wrap the to-be-excluded strings in noptimize tags.
65	foreach ( $this->exclude as $str ) {
66	if ( false !== strpos( $this->content, $str ) ) {
67	$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
68	$this->content = str_replace( $str, $replacement, $this->content );
69	}
70	}
71
72	// Noptimize.
73	$this->content = $this->hide_noptimize( $this->content );
74
75	// Preparing options for Minify_HTML.
76	$options = array( 'keepComments' => $this->keepcomments );
77	if ( $this->forcexhtml ) {
78	$options['xhtml'] = true;
79	}
80
81	$tmp_content = Minify_HTML::minify( $this->content, $options );
82	if ( ! empty( $tmp_content ) ) {
83	$this->content = $tmp_content;
84	unset( $tmp_content );
85	}
86
87	// Restore noptimize.
88	$this->content = $this->restore_noptimize( $this->content );
89
90	// Remove the noptimize-wrapper from around the excluded strings.
91	foreach ( $this->exclude as $str ) {
92	$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
93	if ( false !== strpos( $this->content, $replacement ) ) {
94	$this->content = str_replace( $replacement, $str, $this->content );
95	}
96	}
97
98	// Revslider data attribs somehow suffer from HTML optimization, this fixes that!
99	if ( class_exists( 'RevSlider' ) && apply_filters( 'autoptimize_filter_html_dataattrib_cleanup', false ) ) {
100	$this->content = preg_replace( '#\n(data-.*$)\n#Um', ' $1 ', $this->content );
101	$this->content = preg_replace( '#<[^>](=\"[^"\'<>\s]\")(\w)#', '$1 $2', $this->content );
102	}
103
104	return true;
105	}
106
107	/**
108	* Doesn't do much in case of HTML (no cache in css/js sense there)
109	*
110	* @return true
111	*/
112	public function cache()
113	{
114	return true;
115	}
116
117	/**
118	* Returns the HTML markup.
119	*
120	* @return string
121	*/
122	public function getcontent()
123	{
124	return $this->content;
125	}
126	}
127