1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
<?php
if (!defined('ABSPATH')) die('No direct access allowed');
if (!class_exists('WP_Optimize_Minify_Functions')) {
include WP_OPTIMIZE_MINIFY_DIR.'/class-wp-optimize-minify-functions.php';
}
class WP_Optimize_Minify_Print {
/**
* Load the script using loadAsync JavaScript
*
* @param string $href
* @param boolean $print
* @return string|void
*/
public static function async_script($href, $print = true) {
$wpo_minify_options = wp_optimize_minify_config()->get();
$tag = '<script>if (!navigator.userAgent.match(/'.implode('|', $wpo_minify_options['ualist']).'/i)){' . "\n";
$tag .= " loadAsync('$href', null);" . "\n";
$tag .= '}</script>' . "\n";
if ($print) {
echo $tag;
} else {
return $tag;
}
}
/**
* Print a style that will be loaded async using 'preload'
*
* @param string $href
* @param string $media
* @return void
*/
public static function async_style($href, $media = 'all') {
echo '<link rel="preload" href="'.$href.'" as="style" media="'.$media.'" onload="this.onload=null;this.rel=\'stylesheet\'" />' . "\n";
// fix for firefox not supporting preload
echo '<link rel="stylesheet" href="'.$href.'" media="'.$media.'" />' . "\n";
echo '<noscript><link rel="stylesheet" href="'.$href.'" media="'.$media.'" /></noscript>' . "\n";
echo '<!--[if IE]><link rel="stylesheet" href="'.$href.'" media="'.$media.'" /><![endif]-->' . "\n";
}
/**
* Print a style that will be loaded by JS
*
* @param string $href
* @return void
*/
public static function exclude_style($href) {
$wpo_minify_options = wp_optimize_minify_config()->get();
// make a stylesheet, hide from PageSpeedIndex
$cssguid = 'wpo_min'.hash('adler32', $href);
echo '<script>if (!navigator.userAgent.match(/'.implode('|', $wpo_minify_options['ualist']).'/i)){' . "\n";
echo ' var '.$cssguid.'=document.createElement("link");'.$cssguid.'.rel="stylesheet",'.$cssguid.'.type="text/css",'.$cssguid.'.media="async",'.$cssguid.'.href="'.$href.'",'.$cssguid.'.onload=function() {'.$cssguid.'.media="all"},document.getElementsByTagName("head")[0].appendChild('.$cssguid.');' . "\n";
echo '}</script>' . "\n";
}
/**
* Inline a single style
*
* @param string $handle
* @param string $href
* @return boolean
*/
public static function inline_style($handle, $href) {
$wpo_minify_options = wp_optimize_minify_config()->get();
// font awesome processing, inline
// download, minify, cache
$tkey = 'css-'.hash('adler32', $href).'.css';
$json = WP_Optimize_Minify_Cache_Functions::get_transient($tkey);
if (false === $json) {
$json = WP_Optimize_Minify_Functions::download_and_minify($href, null, $wpo_minify_options['enable_css_minification'], 'css', $handle);
if ($wpo_minify_options['debug']) {
echo "<!-- wpo_min DEBUG: Uncached file processing now for $href -->" . "\n";
}
WP_Optimize_Minify_Cache_Functions::set_transient($tkey, $json);
}
// decode
$res = json_decode($json, true);
// add font-display
// https://developers.google.com/web/updates/2016/02/font-display
$res['code'] = str_ireplace('font-style:normal;', 'font-display:block;font-style:normal;', $res['code']);
// inline css or fail
if (false != $res['status']) {
echo '<style type="text/css" media="all">' . "\n";
echo $res['code'] . "\n";
echo '</style>' . "\n";
return true;
} else {
return false;
}
}
/**
* Print a normal style tag pointing the href
*
* @param string $href
* @return void
*/
public static function style($href) {
echo '<link rel="stylesheet" href="'.$href.'" media="all">' . "\n";
}
/**
* Write header
*
* @param string $file
* @param string $headers
* @return void
*/
public static function write_header($file, $headers) {
file_put_contents($file, $headers);
WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file);
}
/**
* Write CSS
*
* @param string $file
* @param string $code
* @param string $log
* @return void
*/
public static function write_combined_asset($file, $code, $log) {
file_put_contents($file.'.json', json_encode($log));
file_put_contents($file, $code);
// permissions
WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.json');
WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file);
if (function_exists('gzencode')) {
file_put_contents($file.'.gz', gzencode(file_get_contents($file), 9));
WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.gz');
}
// brotli static support
if (function_exists('brotli_compress')) {
file_put_contents($file.'.br', brotli_compress(file_get_contents($file), 11));
WP_Optimize_Minify_Cache_Functions::fix_permission_bits($file.'.br');
}
}
/**
* Load async scripts with callback
*
* @return void
*/
public static function add_load_async() {
$min_or_not_internal = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-'. str_replace('.', '-', WPO_VERSION). '.min';
$contents = file_get_contents(trailingslashit(WPO_PLUGIN_MAIN_PATH) . "js/loadAsync$min_or_not_internal.js");
echo "<script>$contents</script>\n";
}
/**
* Defer CSS globally from the header (order matters)
* Dev: https://www.filamentgroup.com/lab/async-css.html
*
* @return void
*/
public static function add_load_css() {
$min_or_not_internal = (defined('SCRIPT_DEBUG') && SCRIPT_DEBUG) ? '' : '-'. str_replace('.', '-', WPO_VERSION). '.min';
$contents = file_get_contents(trailingslashit(WPO_PLUGIN_MAIN_PATH) . "js/loadCSS$min_or_not_internal.js");
echo "<script>$contents</script>" . "\n";
}
}
|