Combine.php
3.27 KB
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
<?php
declare(strict_types=1);
namespace WP_Rocket\Engine\Optimization\GoogleFonts;
use WP_Rocket\Engine\Optimization\RegexTrait;
use WP_Rocket\Logger\Logger;
/**
* Combine Google Fonts
*
* @since 3.1
*/
class Combine extends AbstractGFOptimization {
use RegexTrait;
/**
* Found fonts
*
* @since 3.1
*
* @var string
*/
protected $fonts = '';
/**
* Found subsets
*
* @since 3.1
*
* @var string
*/
protected $subsets = '';
/**
* Combines multiple Google Fonts links into one
*
* @since 3.1
*
* @param string $html HTML content.
*
* @return string
*/
public function optimize( $html ): string {
Logger::info( 'GOOGLE FONTS COMBINE PROCESS STARTED.', [ 'GF combine process' ] );
$html_nocomments = $this->hide_comments( $html );
$fonts = $this->find( '<link(?:\s+(?:(?!href\s*=\s*)[^>])+)?(?:\s+href\s*=\s*([\'"])(?<url>(?:https?:)?\/\/fonts\.googleapis\.com\/css[^\d](?:(?!\1).)+)\1)(?:\s+[^>]*)?>', $html_nocomments );
if ( ! $fonts ) {
Logger::debug( 'No Google Fonts found.', [ 'GF combine process' ] );
$this->has_google_fonts = false;
return $html;
}
$this->has_google_fonts = true;
$num_fonts = count( $fonts );
Logger::debug(
"Found {$num_fonts} Google Fonts.",
[
'GF combine process',
'tags' => $fonts,
]
);
$this->parse( $fonts );
if ( empty( $this->fonts ) ) {
Logger::debug( 'No Google Fonts left to combine.', [ 'GF combine process' ] );
return $html;
}
$html = preg_replace( '@<\/title>@i', '$0' . $this->get_optimized_markup( $this->get_combined_url() ), $html, 1 );
foreach ( $fonts as $font ) {
$html = str_replace( $font[0], '', $html );
}
Logger::info(
'Google Fonts successfully combined.',
[
'GF combine process',
'url' => $this->fonts . $this->subsets,
]
);
return $html;
}
/**
* Parses found matches to extract fonts and subsets.
*
* @since 3.1
*
* @param array $matches Found matches for the pattern.
*
* @return void
*/
private function parse( array $matches ) {
$fonts_array = [];
$subsets_array = [];
foreach ( $matches as $match ) {
$url = html_entity_decode( $match[2] );
$query = wp_parse_url( $url, PHP_URL_QUERY );
if ( empty( $query ) ) {
return;
}
$font = wp_parse_args( $query );
if ( isset( $font['family'] ) ) {
$font_family = $font['family'];
$font_family = rtrim( $font_family, '%7C' );
$font_family = rtrim( $font_family, '|' );
// Add font to the collection.
$fonts_array[] = rawurlencode( htmlentities( $font_family ) );
}
// Add subset to collection.
if ( isset( $font['subset'] ) ) {
$subsets_array[] = rawurlencode( htmlentities( $font['subset'] ) );
}
}
// Concatenate fonts tag.
$this->subsets = ! empty( $subsets_array ) ? '&subset=' . implode( ',', array_filter( array_unique( $subsets_array ) ) ) : '';
$this->fonts = ! empty( $fonts_array ) ? implode( '%7C', array_filter( array_unique( $fonts_array ) ) ) : '';
}
/**
* Returns the combined Google fonts URL
*
* @since 3.9.1
*
* @return string
*/
private function get_combined_url(): string {
$display = $this->get_font_display_value();
return esc_url( "https://fonts.googleapis.com/css?family={$this->fonts}{$this->subsets}&display={$display}" );
}
}