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87 office 1 <?php
2  
3 /*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11  
12 namespace Symfony\Component\CssSelector\Parser\Tokenizer;
13  
14 /**
15 * CSS selector tokenizer patterns builder.
16 *
17 * This component is a port of the Python cssselect library,
18 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
19 *
20 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
21 *
22 * @internal
23 */
24 class TokenizerPatterns
25 {
26 /**
27 * @var string
28 */
29 private $unicodeEscapePattern;
30  
31 /**
32 * @var string
33 */
34 private $simpleEscapePattern;
35  
36 /**
37 * @var string
38 */
39 private $newLineEscapePattern;
40  
41 /**
42 * @var string
43 */
44 private $escapePattern;
45  
46 /**
47 * @var string
48 */
49 private $stringEscapePattern;
50  
51 /**
52 * @var string
53 */
54 private $nonAsciiPattern;
55  
56 /**
57 * @var string
58 */
59 private $nmCharPattern;
60  
61 /**
62 * @var string
63 */
64 private $nmStartPattern;
65  
66 /**
67 * @var string
68 */
69 private $identifierPattern;
70  
71 /**
72 * @var string
73 */
74 private $hashPattern;
75  
76 /**
77 * @var string
78 */
79 private $numberPattern;
80  
81 /**
82 * @var string
83 */
84 private $quotedStringPattern;
85  
86 /**
87 * Constructor.
88 */
89 public function __construct()
90 {
91 $this->unicodeEscapePattern = '\\\\([0-9a-f]{1,6})(?:\r\n|[ \n\r\t\f])?';
92 $this->simpleEscapePattern = '\\\\(.)';
93 $this->newLineEscapePattern = '\\\\(?:\n|\r\n|\r|\f)';
94 $this->escapePattern = $this->unicodeEscapePattern.'|\\\\[^\n\r\f0-9a-f]';
95 $this->stringEscapePattern = $this->newLineEscapePattern.'|'.$this->escapePattern;
96 $this->nonAsciiPattern = '[^\x00-\x7F]';
97 $this->nmCharPattern = '[_a-z0-9-]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
98 $this->nmStartPattern = '[_a-z]|'.$this->escapePattern.'|'.$this->nonAsciiPattern;
99 $this->identifierPattern = '(?:'.$this->nmStartPattern.')(?:'.$this->nmCharPattern.')*';
100 $this->hashPattern = '#((?:'.$this->nmCharPattern.')+)';
101 $this->numberPattern = '[+-]?(?:[0-9]*\.[0-9]+|[0-9]+)';
102 $this->quotedStringPattern = '([^\n\r\f%s]|'.$this->stringEscapePattern.')*';
103 }
104  
105 /**
106 * @return string
107 */
108 public function getNewLineEscapePattern()
109 {
110 return '~^'.$this->newLineEscapePattern.'~';
111 }
112  
113 /**
114 * @return string
115 */
116 public function getSimpleEscapePattern()
117 {
118 return '~^'.$this->simpleEscapePattern.'~';
119 }
120  
121 /**
122 * @return string
123 */
124 public function getUnicodeEscapePattern()
125 {
126 return '~^'.$this->unicodeEscapePattern.'~i';
127 }
128  
129 /**
130 * @return string
131 */
132 public function getIdentifierPattern()
133 {
134 return '~^'.$this->identifierPattern.'~i';
135 }
136  
137 /**
138 * @return string
139 */
140 public function getHashPattern()
141 {
142 return '~^'.$this->hashPattern.'~i';
143 }
144  
145 /**
146 * @return string
147 */
148 public function getNumberPattern()
149 {
150 return '~^'.$this->numberPattern.'~';
151 }
152  
153 /**
154 * @param string $quote
155 *
156 * @return string
157 */
158 public function getQuotedStringPattern($quote)
159 {
160 return '~^'.sprintf($this->quotedStringPattern, $quote).'~i';
161 }
162 }