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1 <?php |
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2 |
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3 /* |
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4 * This file is part of the Symfony package. |
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5 * |
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6 * (c) Fabien Potencier <fabien@symfony.com> |
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7 * |
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8 * For the full copyright and license information, please view the LICENSE |
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9 * file that was distributed with this source code. |
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10 */ |
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11 |
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12 namespace Symfony\Component\DomCrawler; |
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13 |
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14 /** |
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15 * Link represents an HTML link (an HTML a tag). |
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16 * |
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17 * @author Fabien Potencier <fabien@symfony.com> |
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18 * |
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19 * @api |
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20 */ |
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21 class Link |
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22 { |
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23 protected $node; |
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24 protected $method; |
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25 protected $currentUri; |
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26 |
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27 /** |
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28 * Constructor. |
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29 * |
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30 * @param \DOMNode $node A \DOMNode instance |
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31 * @param string $currentUri The URI of the page where the link is embedded (or the base href) |
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32 * @param string $method The method to use for the link (get by default) |
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33 * |
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34 * @throws \LogicException if the node is not a link |
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35 * |
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36 * @api |
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37 */ |
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38 public function __construct(\DOMNode $node, $currentUri, $method = 'GET') |
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39 { |
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40 if (!in_array(substr($currentUri, 0, 4), array('http', 'file'))) { |
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41 throw new \InvalidArgumentException(sprintf('Current URI must be an absolute URL ("%s").', $currentUri)); |
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42 } |
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43 |
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44 $this->setNode($node); |
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45 $this->method = $method ? strtoupper($method) : null; |
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46 $this->currentUri = $currentUri; |
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47 } |
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48 |
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49 /** |
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50 * Gets the node associated with this link. |
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51 * |
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52 * @return \DOMNode A \DOMNode instance |
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53 */ |
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54 public function getNode() |
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55 { |
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56 return $this->node; |
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57 } |
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58 |
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59 /** |
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60 * Gets the method associated with this link. |
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61 * |
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62 * @return string The method |
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63 * |
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64 * @api |
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65 */ |
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66 public function getMethod() |
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67 { |
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68 return $this->method; |
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69 } |
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70 |
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71 /** |
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72 * Gets the URI associated with this link. |
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73 * |
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74 * @return string The URI |
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75 * |
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76 * @api |
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77 */ |
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78 public function getUri() |
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79 { |
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80 $uri = $this->getRawUri(); |
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81 |
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82 // absolute URL? |
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83 if ('http' === substr($uri, 0, 4)) { |
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84 return $uri; |
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85 } |
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86 |
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87 // empty URI |
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88 if (!$uri) { |
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89 return $this->currentUri; |
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90 } |
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91 |
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92 // only an anchor |
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93 if ('#' === $uri[0]) { |
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94 $baseUri = $this->currentUri; |
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95 if (false !== $pos = strpos($baseUri, '#')) { |
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96 $baseUri = substr($baseUri, 0, $pos); |
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97 } |
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98 |
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99 return $baseUri.$uri; |
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100 } |
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101 |
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102 // only a query string |
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103 if ('?' === $uri[0]) { |
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104 $baseUri = $this->currentUri; |
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105 |
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106 // remove the query string from the current uri |
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107 if (false !== $pos = strpos($baseUri, '?')) { |
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108 $baseUri = substr($baseUri, 0, $pos); |
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109 } |
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110 |
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111 return $baseUri.$uri; |
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112 } |
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113 |
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114 // absolute path |
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115 if ('/' === $uri[0]) { |
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116 return preg_replace('#^(.*?//[^/]+)(?:\/.*)?$#', '$1', $this->currentUri).$uri; |
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117 } |
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118 |
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119 // relative path |
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120 return substr($this->currentUri, 0, strrpos($this->currentUri, '/') + 1).$uri; |
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121 } |
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122 |
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123 protected function getRawUri() |
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124 { |
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125 return $this->node->getAttribute('href'); |
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126 } |
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127 |
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128 protected function setNode(\DOMNode $node) |
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129 { |
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130 if ('a' != $node->nodeName) { |
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131 throw new \LogicException(sprintf('Unable to click on a "%s" tag.', $node->nodeName)); |
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132 } |
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133 |
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134 $this->node = $node; |
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135 } |
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136 } |