scratch – Blame information for rev 87
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Rev | Author | Line No. | Line |
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87 | office | 1 | <?php |
2 | |||
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 | |||
12 | namespace Symfony\Component\CssSelector\Parser; |
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13 | |||
14 | /** |
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15 | * CSS selector reader. |
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16 | * |
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17 | * This component is a port of the Python cssselect library, |
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18 | * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect. |
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19 | * |
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20 | * @author Jean-François Simon <jeanfrancois.simon@sensiolabs.com> |
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21 | * |
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22 | * @internal |
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23 | */ |
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24 | class Reader |
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25 | { |
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26 | /** |
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27 | * @var string |
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28 | */ |
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29 | private $source; |
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30 | |||
31 | /** |
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32 | * @var int |
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33 | */ |
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34 | private $length; |
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35 | |||
36 | /** |
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37 | * @var int |
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38 | */ |
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39 | private $position = 0; |
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40 | |||
41 | /** |
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42 | * @param string $source |
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43 | */ |
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44 | public function __construct($source) |
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45 | { |
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46 | $this->source = $source; |
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47 | $this->length = strlen($source); |
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48 | } |
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49 | |||
50 | /** |
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51 | * @return bool |
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52 | */ |
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53 | public function isEOF() |
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54 | { |
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55 | return $this->position >= $this->length; |
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56 | } |
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57 | |||
58 | /** |
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59 | * @return int |
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60 | */ |
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61 | public function getPosition() |
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62 | { |
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63 | return $this->position; |
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64 | } |
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65 | |||
66 | /** |
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67 | * @return int |
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68 | */ |
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69 | public function getRemainingLength() |
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70 | { |
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71 | return $this->length - $this->position; |
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72 | } |
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73 | |||
74 | /** |
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75 | * @param int $length |
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76 | * @param int $offset |
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77 | * |
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78 | * @return string |
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79 | */ |
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80 | public function getSubstring($length, $offset = 0) |
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81 | { |
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82 | return substr($this->source, $this->position + $offset, $length); |
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83 | } |
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84 | |||
85 | /** |
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86 | * @param string $string |
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87 | * |
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88 | * @return int |
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89 | */ |
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90 | public function getOffset($string) |
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91 | { |
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92 | $position = strpos($this->source, $string, $this->position); |
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93 | |||
94 | return false === $position ? false : $position - $this->position; |
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95 | } |
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96 | |||
97 | /** |
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98 | * @param string $pattern |
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99 | * |
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100 | * @return bool |
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101 | */ |
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102 | public function findPattern($pattern) |
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103 | { |
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104 | $source = substr($this->source, $this->position); |
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105 | |||
106 | if (preg_match($pattern, $source, $matches)) { |
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107 | return $matches; |
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108 | } |
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109 | |||
110 | return false; |
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111 | } |
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112 | |||
113 | /** |
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114 | * @param int $length |
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115 | */ |
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116 | public function moveForward($length) |
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117 | { |
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118 | $this->position += $length; |
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119 | } |
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120 | |||
121 | public function moveToEnd() |
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122 | { |
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123 | $this->position = $this->length; |
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124 | } |
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125 | } |