scratch – Blame information for rev 87

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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\XPath\Extension;
13  
14 use Symfony\Component\CssSelector\XPath\Translator;
15 use Symfony\Component\CssSelector\XPath\XPathExpr;
16  
17 /**
18 * XPath expression translator attribute extension.
19 *
20 * This component is a port of the Python cssselect library,
21 * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
22 *
23 * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com>
24 *
25 * @internal
26 */
27 class AttributeMatchingExtension extends AbstractExtension
28 {
29 /**
30 * {@inheritdoc}
31 */
32 public function getAttributeMatchingTranslators()
33 {
34 return array(
35 'exists' => array($this, 'translateExists'),
36 '=' => array($this, 'translateEquals'),
37 '~=' => array($this, 'translateIncludes'),
38 '|=' => array($this, 'translateDashMatch'),
39 '^=' => array($this, 'translatePrefixMatch'),
40 '$=' => array($this, 'translateSuffixMatch'),
41 '*=' => array($this, 'translateSubstringMatch'),
42 '!=' => array($this, 'translateDifferent'),
43 );
44 }
45  
46 /**
47 * @param XPathExpr $xpath
48 * @param string $attribute
49 * @param string $value
50 *
51 * @return XPathExpr
52 */
53 public function translateExists(XPathExpr $xpath, $attribute, $value)
54 {
55 return $xpath->addCondition($attribute);
56 }
57  
58 /**
59 * @param XPathExpr $xpath
60 * @param string $attribute
61 * @param string $value
62 *
63 * @return XPathExpr
64 */
65 public function translateEquals(XPathExpr $xpath, $attribute, $value)
66 {
67 return $xpath->addCondition(sprintf('%s = %s', $attribute, Translator::getXpathLiteral($value)));
68 }
69  
70 /**
71 * @param XPathExpr $xpath
72 * @param string $attribute
73 * @param string $value
74 *
75 * @return XPathExpr
76 */
77 public function translateIncludes(XPathExpr $xpath, $attribute, $value)
78 {
79 return $xpath->addCondition($value ? sprintf(
80 '%1$s and contains(concat(\' \', normalize-space(%1$s), \' \'), %2$s)',
81 $attribute,
82 Translator::getXpathLiteral(' '.$value.' ')
83 ) : '0');
84 }
85  
86 /**
87 * @param XPathExpr $xpath
88 * @param string $attribute
89 * @param string $value
90 *
91 * @return XPathExpr
92 */
93 public function translateDashMatch(XPathExpr $xpath, $attribute, $value)
94 {
95 return $xpath->addCondition(sprintf(
96 '%1$s and (%1$s = %2$s or starts-with(%1$s, %3$s))',
97 $attribute,
98 Translator::getXpathLiteral($value),
99 Translator::getXpathLiteral($value.'-')
100 ));
101 }
102  
103 /**
104 * @param XPathExpr $xpath
105 * @param string $attribute
106 * @param string $value
107 *
108 * @return XPathExpr
109 */
110 public function translatePrefixMatch(XPathExpr $xpath, $attribute, $value)
111 {
112 return $xpath->addCondition($value ? sprintf(
113 '%1$s and starts-with(%1$s, %2$s)',
114 $attribute,
115 Translator::getXpathLiteral($value)
116 ) : '0');
117 }
118  
119 /**
120 * @param XPathExpr $xpath
121 * @param string $attribute
122 * @param string $value
123 *
124 * @return XPathExpr
125 */
126 public function translateSuffixMatch(XPathExpr $xpath, $attribute, $value)
127 {
128 return $xpath->addCondition($value ? sprintf(
129 '%1$s and substring(%1$s, string-length(%1$s)-%2$s) = %3$s',
130 $attribute,
131 strlen($value) - 1,
132 Translator::getXpathLiteral($value)
133 ) : '0');
134 }
135  
136 /**
137 * @param XPathExpr $xpath
138 * @param string $attribute
139 * @param string $value
140 *
141 * @return XPathExpr
142 */
143 public function translateSubstringMatch(XPathExpr $xpath, $attribute, $value)
144 {
145 return $xpath->addCondition($value ? sprintf(
146 '%1$s and contains(%1$s, %2$s)',
147 $attribute,
148 Translator::getXpathLiteral($value)
149 ) : '0');
150 }
151  
152 /**
153 * @param XPathExpr $xpath
154 * @param string $attribute
155 * @param string $value
156 *
157 * @return XPathExpr
158 */
159 public function translateDifferent(XPathExpr $xpath, $attribute, $value)
160 {
161 return $xpath->addCondition(sprintf(
162 $value ? 'not(%1$s) or %1$s != %2$s' : '%s != %s',
163 $attribute,
164 Translator::getXpathLiteral($value)
165 ));
166 }
167  
168 /**
169 * {@inheritdoc}
170 */
171 public function getName()
172 {
173 return 'attribute-matching';
174 }
175 }