[126] | 1 | <?php |
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| 2 | /** |
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| 3 | * String handling methods. |
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| 4 | * |
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| 5 | * PHP versions 4 and 5 |
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| 6 | * |
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| 7 | * CakePHP(tm) : Rapid Development Framework (http://cakephp.org) |
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| 8 | * Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org) |
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| 9 | * |
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| 10 | * Licensed under The MIT License |
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| 11 | * Redistributions of files must retain the above copyright notice. |
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| 12 | * |
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| 13 | * @copyright Copyright 2005-2011, Cake Software Foundation, Inc. (http://cakefoundation.org) |
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| 14 | * @link http://cakephp.org CakePHP(tm) Project |
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| 15 | * @package cake |
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| 16 | * @subpackage cake.cake.libs |
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| 17 | * @since CakePHP(tm) v 1.2.0.5551 |
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| 18 | * @license MIT License (http://www.opensource.org/licenses/mit-license.php) |
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| 19 | */ |
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| 20 | |
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| 21 | /** |
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| 22 | * String handling methods. |
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| 23 | * |
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| 24 | * |
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| 25 | * @package cake |
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| 26 | * @subpackage cake.cake.libs |
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| 27 | */ |
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| 28 | class String { |
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| 29 | |
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| 30 | /** |
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| 31 | * Generate a random UUID |
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| 32 | * |
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| 33 | * @see http://www.ietf.org/rfc/rfc4122.txt |
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| 34 | * @return RFC 4122 UUID |
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| 35 | * @static |
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| 36 | */ |
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| 37 | function uuid() { |
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| 38 | $node = env('SERVER_ADDR'); |
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| 39 | $pid = null; |
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| 40 | |
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| 41 | if (strpos($node, ':') !== false) { |
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| 42 | if (substr_count($node, '::')) { |
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| 43 | $node = str_replace( |
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| 44 | '::', str_repeat(':0000', 8 - substr_count($node, ':')) . ':', $node |
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| 45 | ); |
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| 46 | } |
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| 47 | $node = explode(':', $node) ; |
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| 48 | $ipv6 = '' ; |
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| 49 | |
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| 50 | foreach ($node as $id) { |
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| 51 | $ipv6 .= str_pad(base_convert($id, 16, 2), 16, 0, STR_PAD_LEFT); |
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| 52 | } |
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| 53 | $node = base_convert($ipv6, 2, 10); |
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| 54 | |
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| 55 | if (strlen($node) < 38) { |
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| 56 | $node = null; |
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| 57 | } else { |
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| 58 | $node = crc32($node); |
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| 59 | } |
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| 60 | } elseif (empty($node)) { |
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| 61 | $host = env('HOSTNAME'); |
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| 62 | |
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| 63 | if (empty($host)) { |
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| 64 | $host = env('HOST'); |
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| 65 | } |
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| 66 | |
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| 67 | if (!empty($host)) { |
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| 68 | $ip = gethostbyname($host); |
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| 69 | |
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| 70 | if ($ip === $host) { |
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| 71 | $node = crc32($host); |
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| 72 | } else { |
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| 73 | $node = ip2long($ip); |
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| 74 | } |
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| 75 | } |
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| 76 | } elseif ($node !== '127.0.0.1') { |
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| 77 | $node = ip2long($node); |
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| 78 | } else { |
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| 79 | $node = null; |
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| 80 | } |
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| 81 | |
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| 82 | if (empty($node)) { |
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| 83 | $node = crc32(Configure::read('Security.salt')); |
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| 84 | } |
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| 85 | |
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| 86 | if (function_exists('zend_thread_id')) { |
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| 87 | $pid = zend_thread_id(); |
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| 88 | } else { |
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| 89 | $pid = getmypid(); |
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| 90 | } |
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| 91 | |
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| 92 | if (!$pid || $pid > 65535) { |
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| 93 | $pid = mt_rand(0, 0xfff) | 0x4000; |
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| 94 | } |
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| 95 | |
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| 96 | list($timeMid, $timeLow) = explode(' ', microtime()); |
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| 97 | $uuid = sprintf( |
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| 98 | "%08x-%04x-%04x-%02x%02x-%04x%08x", (int)$timeLow, (int)substr($timeMid, 2) & 0xffff, |
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| 99 | mt_rand(0, 0xfff) | 0x4000, mt_rand(0, 0x3f) | 0x80, mt_rand(0, 0xff), $pid, $node |
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| 100 | ); |
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| 101 | |
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| 102 | return $uuid; |
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| 103 | } |
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| 104 | |
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| 105 | /** |
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| 106 | * Tokenizes a string using $separator, ignoring any instance of $separator that appears between |
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| 107 | * $leftBound and $rightBound |
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| 108 | * |
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| 109 | * @param string $data The data to tokenize |
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| 110 | * @param string $separator The token to split the data on. |
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| 111 | * @param string $leftBound The left boundary to ignore separators in. |
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| 112 | * @param string $rightBound The right boundary to ignore separators in. |
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| 113 | * @return array Array of tokens in $data. |
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| 114 | * @access public |
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| 115 | * @static |
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| 116 | */ |
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| 117 | function tokenize($data, $separator = ',', $leftBound = '(', $rightBound = ')') { |
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| 118 | if (empty($data) || is_array($data)) { |
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| 119 | return $data; |
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| 120 | } |
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| 121 | |
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| 122 | $depth = 0; |
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| 123 | $offset = 0; |
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| 124 | $buffer = ''; |
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| 125 | $results = array(); |
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| 126 | $length = strlen($data); |
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| 127 | $open = false; |
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| 128 | |
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| 129 | while ($offset <= $length) { |
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| 130 | $tmpOffset = -1; |
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| 131 | $offsets = array( |
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| 132 | strpos($data, $separator, $offset), |
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| 133 | strpos($data, $leftBound, $offset), |
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| 134 | strpos($data, $rightBound, $offset) |
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| 135 | ); |
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| 136 | for ($i = 0; $i < 3; $i++) { |
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| 137 | if ($offsets[$i] !== false && ($offsets[$i] < $tmpOffset || $tmpOffset == -1)) { |
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| 138 | $tmpOffset = $offsets[$i]; |
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| 139 | } |
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| 140 | } |
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| 141 | if ($tmpOffset !== -1) { |
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| 142 | $buffer .= substr($data, $offset, ($tmpOffset - $offset)); |
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| 143 | if ($data{$tmpOffset} == $separator && $depth == 0) { |
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| 144 | $results[] = $buffer; |
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| 145 | $buffer = ''; |
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| 146 | } else { |
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| 147 | $buffer .= $data{$tmpOffset}; |
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| 148 | } |
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| 149 | if ($leftBound != $rightBound) { |
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| 150 | if ($data{$tmpOffset} == $leftBound) { |
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| 151 | $depth++; |
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| 152 | } |
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| 153 | if ($data{$tmpOffset} == $rightBound) { |
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| 154 | $depth--; |
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| 155 | } |
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| 156 | } else { |
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| 157 | if ($data{$tmpOffset} == $leftBound) { |
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| 158 | if (!$open) { |
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| 159 | $depth++; |
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| 160 | $open = true; |
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| 161 | } else { |
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| 162 | $depth--; |
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| 163 | $open = false; |
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| 164 | } |
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| 165 | } |
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| 166 | } |
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| 167 | $offset = ++$tmpOffset; |
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| 168 | } else { |
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| 169 | $results[] = $buffer . substr($data, $offset); |
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| 170 | $offset = $length + 1; |
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| 171 | } |
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| 172 | } |
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| 173 | if (empty($results) && !empty($buffer)) { |
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| 174 | $results[] = $buffer; |
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| 175 | } |
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| 176 | |
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| 177 | if (!empty($results)) { |
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| 178 | $data = array_map('trim', $results); |
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| 179 | } else { |
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| 180 | $data = array(); |
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| 181 | } |
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| 182 | return $data; |
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| 183 | } |
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| 184 | |
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| 185 | /** |
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| 186 | * Replaces variable placeholders inside a $str with any given $data. Each key in the $data array |
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| 187 | * corresponds to a variable placeholder name in $str. |
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| 188 | * Example: `String::insert(':name is :age years old.', array('name' => 'Bob', '65'));` |
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| 189 | * Returns: Bob is 65 years old. |
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| 190 | * |
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| 191 | * Available $options are: |
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| 192 | * |
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| 193 | * - before: The character or string in front of the name of the variable placeholder (Defaults to `:`) |
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| 194 | * - after: The character or string after the name of the variable placeholder (Defaults to null) |
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| 195 | * - escape: The character or string used to escape the before character / string (Defaults to `\`) |
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| 196 | * - format: A regex to use for matching variable placeholders. Default is: `/(?<!\\)\:%s/` |
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| 197 | * (Overwrites before, after, breaks escape / clean) |
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| 198 | * - clean: A boolean or array with instructions for String::cleanInsert |
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| 199 | * |
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| 200 | * @param string $str A string containing variable placeholders |
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| 201 | * @param string $data A key => val array where each key stands for a placeholder variable name |
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| 202 | * to be replaced with val |
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| 203 | * @param string $options An array of options, see description above |
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| 204 | * @return string |
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| 205 | * @access public |
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| 206 | * @static |
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| 207 | */ |
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| 208 | function insert($str, $data, $options = array()) { |
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| 209 | $defaults = array( |
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| 210 | 'before' => ':', 'after' => null, 'escape' => '\\', 'format' => null, 'clean' => false |
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| 211 | ); |
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| 212 | $options += $defaults; |
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| 213 | $format = $options['format']; |
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| 214 | $data = (array)$data; |
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| 215 | if (empty($data)) { |
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| 216 | return ($options['clean']) ? String::cleanInsert($str, $options) : $str; |
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| 217 | } |
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| 218 | |
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| 219 | if (!isset($format)) { |
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| 220 | $format = sprintf( |
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| 221 | '/(?<!%s)%s%%s%s/', |
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| 222 | preg_quote($options['escape'], '/'), |
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| 223 | str_replace('%', '%%', preg_quote($options['before'], '/')), |
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| 224 | str_replace('%', '%%', preg_quote($options['after'], '/')) |
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| 225 | ); |
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| 226 | } |
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| 227 | |
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| 228 | if (strpos($str, '?') !== false && is_numeric(key($data))) { |
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| 229 | $offset = 0; |
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| 230 | while (($pos = strpos($str, '?', $offset)) !== false) { |
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| 231 | $val = array_shift($data); |
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| 232 | $offset = $pos + strlen($val); |
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| 233 | $str = substr_replace($str, $val, $pos, 1); |
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| 234 | } |
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| 235 | return ($options['clean']) ? String::cleanInsert($str, $options) : $str; |
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| 236 | } else { |
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| 237 | asort($data); |
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| 238 | |
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| 239 | $hashKeys = array(); |
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| 240 | foreach ($data as $key => $value) { |
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| 241 | $hashKeys[] = crc32($key); |
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| 242 | } |
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| 243 | |
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| 244 | $tempData = array_combine(array_keys($data), array_values($hashKeys)); |
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| 245 | krsort($tempData); |
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| 246 | foreach ($tempData as $key => $hashVal) { |
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| 247 | $key = sprintf($format, preg_quote($key, '/')); |
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| 248 | $str = preg_replace($key, $hashVal, $str); |
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| 249 | } |
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| 250 | $dataReplacements = array_combine($hashKeys, array_values($data)); |
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| 251 | foreach ($dataReplacements as $tmpHash => $tmpValue) { |
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| 252 | $tmpValue = (is_array($tmpValue)) ? '' : $tmpValue; |
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| 253 | $str = str_replace($tmpHash, $tmpValue, $str); |
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| 254 | } |
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| 255 | } |
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| 256 | |
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| 257 | if (!isset($options['format']) && isset($options['before'])) { |
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| 258 | $str = str_replace($options['escape'].$options['before'], $options['before'], $str); |
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| 259 | } |
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| 260 | return ($options['clean']) ? String::cleanInsert($str, $options) : $str; |
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| 261 | } |
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| 262 | |
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| 263 | /** |
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| 264 | * Cleans up a String::insert() formated string with given $options depending on the 'clean' key in |
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| 265 | * $options. The default method used is text but html is also available. The goal of this function |
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| 266 | * is to replace all whitespace and uneeded markup around placeholders that did not get replaced |
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| 267 | * by String::insert(). |
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| 268 | * |
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| 269 | * @param string $str |
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| 270 | * @param string $options |
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| 271 | * @return string |
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| 272 | * @access public |
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| 273 | * @static |
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| 274 | * @see String::insert() |
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| 275 | */ |
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| 276 | function cleanInsert($str, $options) { |
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| 277 | $clean = $options['clean']; |
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| 278 | if (!$clean) { |
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| 279 | return $str; |
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| 280 | } |
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| 281 | if ($clean === true) { |
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| 282 | $clean = array('method' => 'text'); |
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| 283 | } |
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| 284 | if (!is_array($clean)) { |
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| 285 | $clean = array('method' => $options['clean']); |
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| 286 | } |
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| 287 | switch ($clean['method']) { |
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| 288 | case 'html': |
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| 289 | $clean = array_merge(array( |
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| 290 | 'word' => '[\w,.]+', |
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| 291 | 'andText' => true, |
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| 292 | 'replacement' => '', |
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| 293 | ), $clean); |
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| 294 | $kleenex = sprintf( |
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| 295 | '/[\s]*[a-z]+=(")(%s%s%s[\s]*)+\\1/i', |
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| 296 | preg_quote($options['before'], '/'), |
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| 297 | $clean['word'], |
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| 298 | preg_quote($options['after'], '/') |
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| 299 | ); |
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| 300 | $str = preg_replace($kleenex, $clean['replacement'], $str); |
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| 301 | if ($clean['andText']) { |
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| 302 | $options['clean'] = array('method' => 'text'); |
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| 303 | $str = String::cleanInsert($str, $options); |
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| 304 | } |
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| 305 | break; |
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| 306 | case 'text': |
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| 307 | $clean = array_merge(array( |
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| 308 | 'word' => '[\w,.]+', |
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| 309 | 'gap' => '[\s]*(?:(?:and|or)[\s]*)?', |
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| 310 | 'replacement' => '', |
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| 311 | ), $clean); |
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| 312 | |
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| 313 | $kleenex = sprintf( |
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| 314 | '/(%s%s%s%s|%s%s%s%s)/', |
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| 315 | preg_quote($options['before'], '/'), |
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| 316 | $clean['word'], |
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| 317 | preg_quote($options['after'], '/'), |
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| 318 | $clean['gap'], |
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| 319 | $clean['gap'], |
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| 320 | preg_quote($options['before'], '/'), |
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| 321 | $clean['word'], |
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| 322 | preg_quote($options['after'], '/') |
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| 323 | ); |
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| 324 | $str = preg_replace($kleenex, $clean['replacement'], $str); |
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| 325 | break; |
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| 326 | } |
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| 327 | return $str; |
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| 328 | } |
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| 329 | } |
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