autoptimize / classes / autoptimizeHTML.php

autoptimizeHTML.php in Autoptimize 2.9.3, 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	/**
20	* Whether to force xhtml compatibility.
21	*
22	* @var bool
23	*/
24	private $forcexhtml = false;
25
26	/**
27	* Things to exclude from being minifed.
28	*
29	* @var array
30	*/
31	private $exclude = array(
32	'<!-- ngg_resource_manager_marker -->',
33	'<!--noindex-->',
34	'<!--/noindex-->',
35	);
36
37	public function read( $options )
38	{
39	// Remove the HTML comments?
40	$this->keepcomments = (bool) $options['keepcomments'];
41
42	// Filter to force xhtml.
43	$this->forcexhtml = (bool) apply_filters( 'autoptimize_filter_html_forcexhtml', false );
44
45	// Filterable strings to be excluded from HTML minification.
46	$exclude = apply_filters( 'autoptimize_filter_html_exclude', '' );
47	if ( '' !== $exclude ) {
48	$exclude_arr = array_filter( array_map( 'trim', explode( ',', $exclude ) ) );
49	$this->exclude = array_merge( $exclude_arr, $this->exclude );
50	}
51
52	// Nothing else for HTML!
53	return true;
54	}
55
56	/**
57	* Minifies HTML.
58	*
59	* @return bool
60	*/
61	public function minify()
62	{
63	$noptimize = apply_filters( 'autoptimize_filter_html_noptimize', false, $this->content );
64	if ( $noptimize ) {
65	return false;
66	}
67
68	// Wrap the to-be-excluded strings in noptimize tags.
69	foreach ( $this->exclude as $str ) {
70	if ( false !== strpos( $this->content, $str ) ) {
71	$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
72	$this->content = str_replace( $str, $replacement, $this->content );
73	}
74	}
75
76	// Noptimize.
77	$this->content = $this->hide_noptimize( $this->content );
78
79	// Preparing options for Minify_HTML.
80	$options = array( 'keepComments' => $this->keepcomments );
81	if ( $this->forcexhtml ) {
82	$options['xhtml'] = true;
83	}
84
85	// Optionally (filter-based, GUI later) minify inline JS & CSS.
86	if ( apply_filters( 'autoptimize_html_minify_inline_js_css', false ) ) {
87	$options['jsMinifier'] = 'JSMin::minify';
88	$options['cssMinifier'] = 'autoptimizeCSSmin::minify';
89	}
90
91	$tmp_content = AO_Minify_HTML::minify( $this->content, $options );
92	if ( ! empty( $tmp_content ) ) {
93	$this->content = $tmp_content;
94	unset( $tmp_content );
95	}
96
97	// Restore noptimize.
98	$this->content = $this->restore_noptimize( $this->content );
99
100	// Remove the noptimize-wrapper from around the excluded strings.
101	foreach ( $this->exclude as $str ) {
102	$replacement = '<!--noptimize-->' . $str . '<!--/noptimize-->';
103	if ( false !== strpos( $this->content, $replacement ) ) {
104	$this->content = str_replace( $replacement, $str, $this->content );
105	}
106	}
107
108	// Revslider data attribs somehow suffer from HTML optimization, this fixes that!
109	if ( class_exists( 'RevSlider' ) && apply_filters( 'autoptimize_filter_html_dataattrib_cleanup', false ) ) {
110	$this->content = preg_replace( '#\n(data-.*$)\n#Um', ' $1 ', $this->content );
111	$this->content = preg_replace( '#<[^>](=\"[^"\'<>\s]\")(\w)#', '$1 $2', $this->content );
112	}
113
114	return true;
115	}
116
117	/**
118	* Doesn't do much in case of HTML (no cache in css/js sense there)
119	*
120	* @return true
121	*/
122	public function cache()
123	{
124	return true;
125	}
126
127	/**
128	* Returns the HTML markup.
129	*
130	* @return string
131	*/
132	public function getcontent()
133	{
134	return $this->content;
135	}
136	}
137