|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* This file is part of PHP-Typography. |
|
4
|
|
|
* |
|
5
|
|
|
* Copyright 2017-2019 Peter Putzer. |
|
6
|
|
|
* |
|
7
|
|
|
* This program is free software; you can redistribute it and/or modify modify |
|
8
|
|
|
* it under the terms of the GNU General Public License as published by |
|
9
|
|
|
* the Free Software Foundation; either version 2 of the License, or |
|
10
|
|
|
* (at your option) any later version. |
|
11
|
|
|
* |
|
12
|
|
|
* This program is distributed in the hope that it will be useful, |
|
13
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
14
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
15
|
|
|
* GNU General Public License for more details. |
|
16
|
|
|
* |
|
17
|
|
|
* You should have received a copy of the GNU General Public License along |
|
18
|
|
|
* with this program; if not, write to the Free Software Foundation, Inc., |
|
19
|
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
|
20
|
|
|
* |
|
21
|
|
|
* *** |
|
22
|
|
|
* |
|
23
|
|
|
* @package mundschenk-at/php-typography |
|
24
|
|
|
* @license http://www.gnu.org/licenses/gpl-2.0.html |
|
25
|
|
|
*/ |
|
26
|
|
|
|
|
27
|
|
|
namespace PHP_Typography\Fixes\Node_Fixes; |
|
28
|
|
|
|
|
29
|
|
|
use PHP_Typography\DOM; |
|
30
|
|
|
use PHP_Typography\RE; |
|
31
|
|
|
use PHP_Typography\Settings; |
|
32
|
|
|
use PHP_Typography\U; |
|
33
|
|
|
|
|
34
|
|
|
/** |
|
35
|
|
|
* Applies smart fractions (if enabled). |
|
36
|
|
|
* |
|
37
|
|
|
* Call before style_numbers, but after smart_ordinal_suffix. |
|
38
|
|
|
* Purposefully seperated from smart_math because of HTML code injection. |
|
39
|
|
|
* |
|
40
|
|
|
* @author Peter Putzer <[email protected]> |
|
41
|
|
|
* |
|
42
|
|
|
* @since 5.0.0 |
|
43
|
|
|
*/ |
|
44
|
|
|
class Smart_Fractions_Fix extends Abstract_Node_Fix { |
|
45
|
|
|
|
|
46
|
|
|
const SPACING = '/\b(\d+)\s(\d+\s?\/\s?\d+)\b/'; |
|
47
|
|
|
|
|
48
|
|
|
const FRACTION_MATCHING = '/ |
|
49
|
|
|
# lookbehind assertion: makes sure we are not messing up a url |
|
50
|
|
|
(?<=\A|\s|' . U::NO_BREAK_SPACE . '|' . U::NO_BREAK_NARROW_SPACE . ') |
|
51
|
|
|
|
|
52
|
|
|
(\d+) |
|
53
|
|
|
|
|
54
|
|
|
# strip out any zero-width spaces inserted by wrap_hard_hyphens |
|
55
|
|
|
(?:\s?\/\s?' . U::ZERO_WIDTH_SPACE . '?) |
|
56
|
|
|
|
|
57
|
|
|
( |
|
58
|
|
|
# lookahead assertion: do not make fractions from x:x if x > 1 |
|
59
|
|
|
(?: |
|
60
|
|
|
# ignore x:x where x > 1 |
|
61
|
|
|
(?!\1(?:[^0-9]|\Z)) | |
|
62
|
|
|
|
|
63
|
|
|
# but allow 1:1 |
|
64
|
|
|
(?=\1)(?=1(?:[^0-9]|\Z)) |
|
65
|
|
|
) |
|
66
|
|
|
|
|
67
|
|
|
# Any numbers, except those above |
|
68
|
|
|
\d+ |
|
69
|
|
|
) |
|
70
|
|
|
( |
|
71
|
|
|
# handle fractions followed by prime symbols |
|
72
|
|
|
(?:' . U::SINGLE_PRIME . '|' . U::DOUBLE_PRIME . ')? |
|
73
|
|
|
|
|
74
|
|
|
# handle ordinals after fractions |
|
75
|
|
|
(?:\<sup\>(?:st|nd|rd|th)<\/sup\>)? |
|
76
|
|
|
|
|
77
|
|
|
# makes sure we are not messing up a url |
|
78
|
|
|
(?:\Z|\s|' . U::NO_BREAK_SPACE . '|' . U::NO_BREAK_NARROW_SPACE . '|\.|,|\!|\?|\)|\;|\:|\'|") |
|
79
|
|
|
) |
|
80
|
|
|
/Sxu'; |
|
81
|
|
|
|
|
82
|
|
|
const ESCAPE_DATE_MM_YYYY = '/ |
|
83
|
|
|
# capture valid one- or two-digit months |
|
84
|
|
|
( \b (?: 0?[1-9] | 1[0-2] ) ) |
|
85
|
|
|
|
|
86
|
|
|
# capture any zero-width spaces inserted by wrap_hard_hyphens |
|
87
|
|
|
(\s?\/\s?' . U::ZERO_WIDTH_SPACE . '?) |
|
88
|
|
|
|
|
89
|
|
|
# handle 4-decimal years |
|
90
|
|
|
( [12][0-9]{3}\b ) |
|
91
|
|
|
|
|
92
|
|
|
/Sxu'; |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* Regular expression matching consecutive years in the format YYYY/YYYY+1. |
|
96
|
|
|
* |
|
97
|
|
|
* @var string |
|
98
|
|
|
*/ |
|
99
|
|
|
protected $escape_consecutive_years; |
|
100
|
|
|
|
|
101
|
|
|
/** |
|
102
|
|
|
* Replacement expression including optional CSS classes. |
|
103
|
|
|
* |
|
104
|
|
|
* @var string |
|
105
|
|
|
*/ |
|
106
|
|
|
protected $replacement; |
|
107
|
|
|
|
|
108
|
|
|
/** |
|
109
|
|
|
* Creates a new fix instance. |
|
110
|
|
|
* |
|
111
|
|
|
* @param string $css_numerator CSS class applied to the numerator part. |
|
112
|
|
|
* @param string $css_denominator CSS class applied to the denominator part. |
|
113
|
|
|
* @param bool $feed_compatible Optional. Default false. |
|
114
|
|
|
*/ |
|
115
|
1 |
|
public function __construct( $css_numerator, $css_denominator, $feed_compatible = false ) { |
|
116
|
1 |
|
parent::__construct( $feed_compatible ); |
|
117
|
|
|
|
|
118
|
|
|
// Escape consecutive years. |
|
119
|
1 |
|
$year_regex = []; |
|
120
|
1 |
|
for ( $year = 1900; $year < 2100; ++$year ) { |
|
121
|
1 |
|
$year_regex[] = "(?: ( $year ) (\s?\/\s?" . U::ZERO_WIDTH_SPACE . '?) ( ' . ( $year + 1 ) . ' ) )'; |
|
122
|
|
|
} |
|
123
|
1 |
|
$this->escape_consecutive_years = '/\b (?| ' . implode( '|', $year_regex ) . ' ) \b/Sxu'; |
|
124
|
|
|
|
|
125
|
|
|
// Replace fractions. |
|
126
|
1 |
|
$numerator_css = empty( $css_numerator ) ? '' : ' class="' . $css_numerator . '"'; |
|
127
|
1 |
|
$denominator_css = empty( $css_denominator ) ? '' : ' class="' . $css_denominator . '"'; |
|
128
|
1 |
|
$this->replacement = RE::escape_tags( "<sup{$numerator_css}>\$1</sup>" . U::FRACTION_SLASH . "<sub{$denominator_css}>\$2</sub>\$3" ); |
|
129
|
1 |
|
} |
|
130
|
|
|
|
|
131
|
|
|
/** |
|
132
|
|
|
* Apply the fix to a given textnode. |
|
133
|
|
|
* |
|
134
|
|
|
* @param \DOMText $textnode Required. |
|
135
|
|
|
* @param Settings $settings Required. |
|
136
|
|
|
* @param bool $is_title Optional. Default false. |
|
137
|
|
|
*/ |
|
138
|
33 |
|
public function apply( \DOMText $textnode, Settings $settings, $is_title = false ) { |
|
139
|
33 |
|
if ( empty( $settings[ Settings::SMART_FRACTIONS ] ) && empty( $settings[ Settings::FRACTION_SPACING ] ) ) { |
|
140
|
12 |
|
return; |
|
141
|
|
|
} |
|
142
|
|
|
|
|
143
|
|
|
// Cache textnode content. |
|
144
|
21 |
|
$node_data = $textnode->data; |
|
145
|
|
|
|
|
146
|
21 |
|
if ( ! empty( $settings[ Settings::FRACTION_SPACING ] ) && ! empty( $settings[ Settings::SMART_FRACTIONS ] ) ) { |
|
147
|
5 |
|
$node_data = \preg_replace( self::SPACING, '$1' . U::NO_BREAK_NARROW_SPACE . '$2', $node_data ); |
|
148
|
16 |
|
} elseif ( ! empty( $settings[ Settings::FRACTION_SPACING ] ) && empty( $settings[ Settings::SMART_FRACTIONS ] ) ) { |
|
149
|
4 |
|
$node_data = \preg_replace( self::SPACING, '$1' . U::NO_BREAK_SPACE . '$2', $node_data ); |
|
150
|
|
|
} |
|
151
|
|
|
|
|
152
|
21 |
|
if ( ! empty( $settings[ Settings::SMART_FRACTIONS ] ) ) { |
|
153
|
17 |
|
$node_data = \preg_replace( |
|
154
|
|
|
[ |
|
155
|
|
|
// Escape sequences we don't want fractionified. |
|
156
|
17 |
|
$this->escape_consecutive_years, |
|
157
|
17 |
|
self::ESCAPE_DATE_MM_YYYY, |
|
158
|
|
|
|
|
159
|
|
|
// Replace fractions. |
|
160
|
17 |
|
self::FRACTION_MATCHING, |
|
161
|
|
|
], |
|
162
|
|
|
[ |
|
163
|
17 |
|
'$1' . RE::ESCAPE_MARKER . '$2$3', |
|
164
|
|
|
'$1' . RE::ESCAPE_MARKER . '$2$3', |
|
165
|
|
|
|
|
166
|
17 |
|
$this->replacement, |
|
167
|
|
|
], |
|
168
|
17 |
|
$node_data |
|
169
|
|
|
); |
|
170
|
|
|
|
|
171
|
|
|
// Unescape escaped sequences. |
|
172
|
17 |
|
$node_data = \str_replace( RE::ESCAPE_MARKER, '', $node_data ); |
|
173
|
|
|
} |
|
174
|
|
|
|
|
175
|
|
|
// Restore textnode content. |
|
176
|
21 |
|
$textnode->data = $node_data; |
|
177
|
21 |
|
} |
|
178
|
|
|
} |
|
179
|
|
|
|
mundschenk-at /
php-typography
