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| 1 | +<?php |
| 2 | +/** |
| 3 | + * Squiz_Sniffs_CSS_ShorthandSizeSniff. |
| 4 | + * |
| 5 | + * PHP version 5 |
| 6 | + * |
| 7 | + * @category PHP |
| 8 | + * @package PHP_CodeSniffer |
| 9 | + * @author Greg Sherwood <[email protected]> |
| 10 | + * @copyright 2006-2012 Squiz Pty Ltd (ABN 77 084 670 600) |
| 11 | + * @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence |
| 12 | + * @link http://pear.php.net/package/PHP_CodeSniffer |
| 13 | + */ |
| 14 | + |
| 15 | +/** |
| 16 | + * Squiz_Sniffs_CSS_ShorthandSizeSniff. |
| 17 | + * |
| 18 | + * Ensure sizes are defined using shorthand notation where possible, except in the |
| 19 | + * case where shorthand becomes 3 values. |
| 20 | + * |
| 21 | + * @category PHP |
| 22 | + * @package PHP_CodeSniffer |
| 23 | + * @author Greg Sherwood <[email protected]> |
| 24 | + * @copyright 2006-2012 Squiz Pty Ltd (ABN 77 084 670 600) |
| 25 | + * @license https://github.com/squizlabs/PHP_CodeSniffer/blob/master/licence.txt BSD Licence |
| 26 | + * @version Release: @package_version@ |
| 27 | + * @link http://pear.php.net/package/PHP_CodeSniffer |
| 28 | + */ |
| 29 | +class Squiz_Sniffs_CSS_ShorthandSizeSniff implements PHP_CodeSniffer_Sniff |
| 30 | +{ |
| 31 | + |
| 32 | + /** |
| 33 | + * A list of tokenizers this sniff supports. |
| 34 | + * |
| 35 | + * @var array |
| 36 | + */ |
| 37 | + public $supportedTokenizers = array('CSS'); |
| 38 | + |
| 39 | + /** |
| 40 | + * A list of styles that we shouldn't check. |
| 41 | + * |
| 42 | + * These have values that looks like sizes, but are not. |
| 43 | + * |
| 44 | + * @var array |
| 45 | + */ |
| 46 | + public $excludeStyles = array( |
| 47 | + 'background-position', |
| 48 | + 'box-shadow', |
| 49 | + 'transform-origin', |
| 50 | + '-webkit-transform-origin', |
| 51 | + '-ms-transform-origin', |
| 52 | + ); |
| 53 | + |
| 54 | + |
| 55 | + /** |
| 56 | + * Returns the token types that this sniff is interested in. |
| 57 | + * |
| 58 | + * @return array(int) |
| 59 | + */ |
| 60 | + public function register() |
| 61 | + { |
| 62 | + return array(T_STYLE); |
| 63 | + |
| 64 | + }//end register() |
| 65 | + |
| 66 | + |
| 67 | + /** |
| 68 | + * Processes the tokens that this sniff is interested in. |
| 69 | + * |
| 70 | + * @param PHP_CodeSniffer_File $phpcsFile The file where the token was found. |
| 71 | + * @param int $stackPtr The position in the stack where |
| 72 | + * the token was found. |
| 73 | + * |
| 74 | + * @return void |
| 75 | + */ |
| 76 | + public function process(PHP_CodeSniffer_File $phpcsFile, $stackPtr) |
| 77 | + { |
| 78 | + $tokens = $phpcsFile->getTokens(); |
| 79 | + |
| 80 | + // Some styles look like shorthand but are not actually a set of 4 sizes. |
| 81 | + $style = strtolower($tokens[$stackPtr]['content']); |
| 82 | + if (in_array($style, $this->excludeStyles) === true) { |
| 83 | + return; |
| 84 | + } |
| 85 | + |
| 86 | + // Get the whole style content. |
| 87 | + $end = $phpcsFile->findNext(T_SEMICOLON, ($stackPtr + 1)); |
| 88 | + $content = $phpcsFile->getTokensAsString(($stackPtr + 1), ($end - $stackPtr - 1)); |
| 89 | + $content = trim($content, ': '); |
| 90 | + |
| 91 | + // Account for a !important annotation. |
| 92 | + if (substr($content, -10) === '!important') { |
| 93 | + $content = substr($content, 0, -10); |
| 94 | + $content = trim($content); |
| 95 | + } |
| 96 | + |
| 97 | + // Check if this style value is a set of numbers with optional prefixes. |
| 98 | + $content = preg_replace('/\s+/', ' ', $content); |
| 99 | + $values = array(); |
| 100 | + $num = preg_match_all( |
| 101 | + '/([0-9]+)([a-zA-Z]{2}\s+|%\s+|\s+)/', |
| 102 | + $content.' ', |
| 103 | + $values, |
| 104 | + PREG_SET_ORDER |
| 105 | + ); |
| 106 | + |
| 107 | + // Only interested in styles that have multiple sizes defined. |
| 108 | + if ($num < 2) { |
| 109 | + return; |
| 110 | + } |
| 111 | + |
| 112 | + // Rebuild the content we matched to ensure we got everything. |
| 113 | + $matched = ''; |
| 114 | + foreach ($values as $value) { |
| 115 | + $matched .= $value[0]; |
| 116 | + } |
| 117 | + |
| 118 | + if ($content !== trim($matched)) { |
| 119 | + return; |
| 120 | + } |
| 121 | + |
| 122 | + if ($num === 3) { |
| 123 | + $expected = trim($content.' '.$values[1][1].$values[1][2]); |
| 124 | + $error = 'Shorthand syntax not allowed here; use %s instead'; |
| 125 | + $data = array($expected); |
| 126 | + $phpcsFile->addError($error, $stackPtr, 'NotAllowed', $data); |
| 127 | + return; |
| 128 | + } |
| 129 | + |
| 130 | + if ($num === 2) { |
| 131 | + if ($values[0][0] !== $values[1][0]) { |
| 132 | + // Both values are different, so it is already shorthand. |
| 133 | + return; |
| 134 | + } |
| 135 | + } else if ($values[0][0] !== $values[2][0] || $values[1][0] !== $values[3][0]) { |
| 136 | + // Can't shorthand this. |
| 137 | + return; |
| 138 | + } |
| 139 | + |
| 140 | + if ($values[0][0] === $values[1][0]) { |
| 141 | + // All values are the same. |
| 142 | + $expected = $values[0][0]; |
| 143 | + } else { |
| 144 | + $expected = $values[0][0].' '.$values[1][0]; |
| 145 | + } |
| 146 | + |
| 147 | + $expected = preg_replace('/\s+/', ' ', trim($expected)); |
| 148 | + |
| 149 | + $error = 'Size definitions must use shorthand if available; expected "%s" but found "%s"'; |
| 150 | + $data = array( |
| 151 | + $expected, |
| 152 | + $content, |
| 153 | + ); |
| 154 | + |
| 155 | + $phpcsFile->addError($error, $stackPtr, 'NotUsed', $data); |
| 156 | + |
| 157 | + }//end process() |
| 158 | + |
| 159 | + |
| 160 | +}//end class |
| 161 | +?> |
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