comparison vendor/symfony/css-selector/XPath/XPathExpr.php @ 0:4c8ae668cc8c

Initial import (non-working)
author Chris Cannam
date Wed, 29 Nov 2017 16:09:58 +0000
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children 1fec387a4317
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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;
13
14 /**
15 * XPath expression translator interface.
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 XPathExpr
25 {
26 /**
27 * @var string
28 */
29 private $path;
30
31 /**
32 * @var string
33 */
34 private $element;
35
36 /**
37 * @var string
38 */
39 private $condition;
40
41 /**
42 * @param string $path
43 * @param string $element
44 * @param string $condition
45 * @param bool $starPrefix
46 */
47 public function __construct($path = '', $element = '*', $condition = '', $starPrefix = false)
48 {
49 $this->path = $path;
50 $this->element = $element;
51 $this->condition = $condition;
52
53 if ($starPrefix) {
54 $this->addStarPrefix();
55 }
56 }
57
58 /**
59 * @return string
60 */
61 public function getElement()
62 {
63 return $this->element;
64 }
65
66 /**
67 * @param $condition
68 *
69 * @return $this
70 */
71 public function addCondition($condition)
72 {
73 $this->condition = $this->condition ? sprintf('%s and (%s)', $this->condition, $condition) : $condition;
74
75 return $this;
76 }
77
78 /**
79 * @return string
80 */
81 public function getCondition()
82 {
83 return $this->condition;
84 }
85
86 /**
87 * @return $this
88 */
89 public function addNameTest()
90 {
91 if ('*' !== $this->element) {
92 $this->addCondition('name() = '.Translator::getXpathLiteral($this->element));
93 $this->element = '*';
94 }
95
96 return $this;
97 }
98
99 /**
100 * @return $this
101 */
102 public function addStarPrefix()
103 {
104 $this->path .= '*/';
105
106 return $this;
107 }
108
109 /**
110 * Joins another XPathExpr with a combiner.
111 *
112 * @param string $combiner
113 * @param XPathExpr $expr
114 *
115 * @return $this
116 */
117 public function join($combiner, XPathExpr $expr)
118 {
119 $path = $this->__toString().$combiner;
120
121 if ('*/' !== $expr->path) {
122 $path .= $expr->path;
123 }
124
125 $this->path = $path;
126 $this->element = $expr->element;
127 $this->condition = $expr->condition;
128
129 return $this;
130 }
131
132 /**
133 * @return string
134 */
135 public function __toString()
136 {
137 $path = $this->path.$this->element;
138 $condition = null === $this->condition || '' === $this->condition ? '' : '['.$this->condition.']';
139
140 return $path.$condition;
141 }
142 }