1 | <?php |
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2 | /** |
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3 | * @link https://www.yiiframework.com/ |
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4 | * @copyright Copyright (c) 2008 Yii Software LLC |
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5 | * @license https://www.yiiframework.com/license/ |
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6 | */ |
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7 | |||||
8 | namespace yii\helpers; |
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9 | |||||
10 | use Yii; |
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11 | |||||
12 | /** |
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13 | * BaseStringHelper provides concrete implementation for [[StringHelper]]. |
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14 | * |
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15 | * Do not use BaseStringHelper. Use [[StringHelper]] instead. |
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16 | * |
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17 | * @author Qiang Xue <[email protected]> |
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18 | * @author Alex Makarov <[email protected]> |
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19 | * @since 2.0 |
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20 | */ |
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21 | class BaseStringHelper |
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22 | { |
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23 | /** |
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24 | * Returns the number of bytes in the given string. |
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25 | * This method ensures the string is treated as a byte array by using `mb_strlen()`. |
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26 | * |
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27 | * @param string $string the string being measured for length |
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28 | * @return int the number of bytes in the given string. |
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29 | */ |
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30 | 423 | public static function byteLength($string) |
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31 | { |
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32 | 423 | return mb_strlen((string)$string, '8bit'); |
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33 | } |
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34 | |||||
35 | /** |
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36 | * Returns the portion of string specified by the start and length parameters. |
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37 | * This method ensures the string is treated as a byte array by using `mb_substr()`. |
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38 | * |
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39 | * @param string $string the input string. Must be one character or longer. |
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40 | * @param int $start the starting position |
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41 | * @param int|null $length the desired portion length. If not specified or `null`, there will be |
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42 | * no limit on length i.e. the output will be until the end of the string. |
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43 | * @return string the extracted part of string, or FALSE on failure or an empty string. |
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44 | * @see https://www.php.net/manual/en/function.substr.php |
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45 | */ |
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46 | 153 | public static function byteSubstr($string, $start, $length = null) |
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47 | { |
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48 | 153 | if ($length === null) { |
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49 | 47 | $length = static::byteLength($string); |
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50 | } |
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51 | |||||
52 | 153 | return mb_substr((string)$string, $start, $length, '8bit'); |
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53 | } |
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54 | |||||
55 | /** |
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56 | * Returns the trailing name component of a path. |
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57 | * This method is similar to the php function `basename()` except that it will |
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58 | * treat both \ and / as directory separators, independent of the operating system. |
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59 | * This method was mainly created to work on php namespaces. When working with real |
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60 | * file paths, php's `basename()` should work fine for you. |
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61 | * Note: this method is not aware of the actual filesystem, or path components such as "..". |
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62 | * |
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63 | * @param string $path A path string. |
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64 | * @param string $suffix If the name component ends in suffix this will also be cut off. |
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65 | * @return string the trailing name component of the given path. |
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66 | * @see https://www.php.net/manual/en/function.basename.php |
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67 | */ |
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68 | 23 | public static function basename($path, $suffix = '') |
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69 | { |
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70 | 23 | $path = (string)$path; |
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71 | |||||
72 | 23 | $len = mb_strlen($suffix); |
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73 | 23 | if ($len > 0 && mb_substr($path, -$len) === $suffix) { |
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74 | 1 | $path = mb_substr($path, 0, -$len); |
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75 | } |
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76 | |||||
77 | 23 | $path = rtrim(str_replace('\\', '/', $path), '/'); |
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78 | 23 | $pos = mb_strrpos($path, '/'); |
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79 | 23 | if ($pos !== false) { |
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80 | 23 | return mb_substr($path, $pos + 1); |
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81 | } |
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82 | |||||
83 | 1 | return $path; |
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84 | } |
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85 | |||||
86 | /** |
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87 | * Returns parent directory's path. |
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88 | * This method is similar to `dirname()` except that it will treat |
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89 | * both \ and / as directory separators, independent of the operating system. |
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90 | * |
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91 | * @param string $path A path string. |
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92 | * @return string the parent directory's path. |
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93 | * @see https://www.php.net/manual/en/function.basename.php |
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94 | */ |
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95 | 11 | public static function dirname($path) |
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96 | { |
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97 | 11 | $normalizedPath = rtrim( |
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98 | 11 | str_replace('\\', '/', (string)$path), |
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99 | 11 | '/' |
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100 | ); |
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101 | 11 | $separatorPosition = mb_strrpos($normalizedPath, '/'); |
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102 | |||||
103 | 11 | if ($separatorPosition !== false) { |
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104 | 9 | return mb_substr($path, 0, $separatorPosition); |
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105 | } |
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106 | |||||
107 | 2 | return ''; |
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108 | } |
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109 | |||||
110 | /** |
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111 | * Truncates a string to the number of characters specified. |
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112 | * |
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113 | * In order to truncate for an exact length, the $suffix char length must be counted towards the $length. For example |
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114 | * to have a string which is exactly 255 long with $suffix `...` of 3 chars, then `StringHelper::truncate($string, 252, '...')` |
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115 | * must be used to ensure you have 255 long string afterwards. |
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116 | * |
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117 | * @param string $string The string to truncate. |
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118 | * @param int $length How many characters from original string to include into truncated string. |
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119 | * @param string $suffix String to append to the end of truncated string. |
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120 | * @param string|null $encoding The charset to use, defaults to charset currently used by application. |
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121 | * @param bool $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags. |
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122 | * This parameter is available since version 2.0.1. |
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123 | * @return string the truncated string. |
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124 | */ |
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125 | 1 | public static function truncate($string, $length, $suffix = '...', $encoding = null, $asHtml = false) |
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126 | { |
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127 | 1 | $string = (string)$string; |
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128 | |||||
129 | 1 | if ($encoding === null) { |
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130 | 1 | $encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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131 | } |
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132 | 1 | if ($asHtml) { |
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133 | 1 | return static::truncateHtml($string, $length, $suffix, $encoding); |
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134 | } |
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135 | |||||
136 | 1 | if (mb_strlen($string, $encoding) > $length) { |
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137 | 1 | return rtrim(mb_substr($string, 0, $length, $encoding)) . $suffix; |
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138 | } |
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139 | |||||
140 | 1 | return $string; |
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141 | } |
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142 | |||||
143 | /** |
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144 | * Truncates a string to the number of words specified. |
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145 | * |
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146 | * @param string $string The string to truncate. |
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147 | * @param int $count How many words from original string to include into truncated string. |
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148 | * @param string $suffix String to append to the end of truncated string. |
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149 | * @param bool $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags. |
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150 | * This parameter is available since version 2.0.1. |
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151 | * @return string the truncated string. |
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152 | */ |
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153 | 1 | public static function truncateWords($string, $count, $suffix = '...', $asHtml = false) |
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154 | { |
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155 | 1 | if ($asHtml) { |
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156 | 1 | return static::truncateHtml($string, $count, $suffix); |
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157 | } |
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158 | |||||
159 | 1 | $words = preg_split('/(\s+)/u', trim($string), 0, PREG_SPLIT_DELIM_CAPTURE); |
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160 | 1 | if (count($words) / 2 > $count) { |
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161 | 1 | return implode('', array_slice($words, 0, ($count * 2) - 1)) . $suffix; |
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162 | } |
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163 | |||||
164 | 1 | return $string; |
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165 | } |
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166 | |||||
167 | /** |
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168 | * Truncate a string while preserving the HTML. |
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169 | * |
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170 | * @param string $string The string to truncate |
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171 | * @param int $count The counter |
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172 | * @param string $suffix String to append to the end of the truncated string. |
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173 | * @param string|bool $encoding Encoding flag or charset. |
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174 | * @return string |
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175 | * @since 2.0.1 |
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176 | */ |
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177 | 2 | protected static function truncateHtml($string, $count, $suffix, $encoding = false) |
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178 | { |
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179 | 2 | $config = \HTMLPurifier_Config::create(null); |
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180 | 2 | if (Yii::$app !== null) { |
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181 | $config->set('Cache.SerializerPath', Yii::$app->getRuntimePath()); |
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182 | } |
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183 | 2 | $lexer = \HTMLPurifier_Lexer::create($config); |
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184 | 2 | $tokens = $lexer->tokenizeHTML($string, $config, new \HTMLPurifier_Context()); |
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185 | 2 | $openTokens = []; |
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186 | 2 | $totalCount = 0; |
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187 | 2 | $depth = 0; |
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188 | 2 | $truncated = []; |
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189 | 2 | foreach ($tokens as $token) { |
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190 | 2 | if ($token instanceof \HTMLPurifier_Token_Start) { //Tag begins |
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191 | 2 | $openTokens[$depth] = $token->name; |
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192 | 2 | $truncated[] = $token; |
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193 | 2 | ++$depth; |
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194 | 2 | } elseif ($token instanceof \HTMLPurifier_Token_Text && $totalCount <= $count) { //Text |
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195 | 2 | if (false === $encoding) { |
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196 | 1 | preg_match('/^(\s*)/um', $token->data, $prefixSpace) ?: $prefixSpace = ['', '']; |
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197 | 1 | $token->data = $prefixSpace[1] . self::truncateWords(ltrim($token->data), $count - $totalCount, ''); |
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198 | 1 | $currentCount = self::countWords($token->data); |
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199 | } else { |
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200 | 1 | $token->data = self::truncate($token->data, $count - $totalCount, '', $encoding); |
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201 | 1 | $currentCount = mb_strlen($token->data, $encoding); |
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202 | } |
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203 | 2 | $totalCount += $currentCount; |
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204 | 2 | $truncated[] = $token; |
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205 | 2 | } elseif ($token instanceof \HTMLPurifier_Token_End) { //Tag ends |
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206 | 2 | if ($token->name === $openTokens[$depth - 1]) { |
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207 | 2 | --$depth; |
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208 | 2 | unset($openTokens[$depth]); |
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209 | 2 | $truncated[] = $token; |
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210 | } |
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211 | 2 | } elseif ($token instanceof \HTMLPurifier_Token_Empty) { //Self contained tags, i.e. <img/> etc. |
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212 | 2 | $truncated[] = $token; |
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213 | } |
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214 | 2 | if ($totalCount >= $count) { |
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215 | 2 | if (0 < count($openTokens)) { |
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216 | 2 | krsort($openTokens); |
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217 | 2 | foreach ($openTokens as $name) { |
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218 | 2 | $truncated[] = new \HTMLPurifier_Token_End($name); |
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219 | } |
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220 | } |
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221 | 2 | break; |
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222 | } |
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223 | } |
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224 | 2 | $context = new \HTMLPurifier_Context(); |
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225 | 2 | $generator = new \HTMLPurifier_Generator($config, $context); |
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226 | 2 | return $generator->generateFromTokens($truncated) . ($totalCount >= $count ? $suffix : ''); |
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227 | } |
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228 | |||||
229 | /** |
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230 | * Check if given string starts with specified substring. Binary and multibyte safe. |
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231 | * |
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232 | * @param string $string Input string |
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233 | * @param string $with Part to search inside the $string |
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234 | * @param bool $caseSensitive Case sensitive search. Default is true. When case sensitive is enabled, `$with` must |
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235 | * exactly match the starting of the string in order to get a true value. |
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236 | * @return bool Returns true if first input starts with second input, false otherwise |
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237 | */ |
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238 | 20 | public static function startsWith($string, $with, $caseSensitive = true) |
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239 | { |
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240 | 20 | $string = (string)$string; |
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241 | 20 | $with = (string)$with; |
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242 | |||||
243 | 20 | if (!$bytes = static::byteLength($with)) { |
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244 | 3 | return true; |
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245 | } |
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246 | 17 | if ($caseSensitive) { |
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247 | 16 | return strncmp($string, $with, $bytes) === 0; |
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248 | } |
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249 | |||||
250 | 15 | $encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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251 | 15 | $string = static::byteSubstr($string, 0, $bytes); |
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252 | |||||
253 | 15 | return mb_strtolower($string, $encoding) === mb_strtolower($with, $encoding); |
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254 | } |
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255 | |||||
256 | /** |
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257 | * Check if given string ends with specified substring. Binary and multibyte safe. |
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258 | * |
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259 | * @param string $string Input string to check |
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260 | * @param string $with Part to search inside of the `$string`. |
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261 | * @param bool $caseSensitive Case sensitive search. Default is true. When case sensitive is enabled, `$with` must |
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262 | * exactly match the ending of the string in order to get a true value. |
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263 | * @return bool Returns true if first input ends with second input, false otherwise |
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264 | */ |
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265 | 30 | public static function endsWith($string, $with, $caseSensitive = true) |
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266 | { |
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267 | 30 | $string = (string)$string; |
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268 | 30 | $with = (string)$with; |
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269 | |||||
270 | 30 | if (!$bytes = static::byteLength($with)) { |
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271 | 3 | return true; |
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272 | } |
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273 | 27 | if ($caseSensitive) { |
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274 | // Warning check, see https://php.net/substr-compare#refsect1-function.substr-compare-returnvalues |
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275 | 16 | if (static::byteLength($string) < $bytes) { |
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276 | 3 | return false; |
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277 | } |
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278 | |||||
279 | 13 | return substr_compare($string, $with, -$bytes, $bytes) === 0; |
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280 | } |
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281 | |||||
282 | 25 | $encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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283 | 25 | $string = static::byteSubstr($string, -$bytes); |
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284 | |||||
285 | 25 | return mb_strtolower($string, $encoding) === mb_strtolower($with, $encoding); |
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286 | } |
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287 | |||||
288 | /** |
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289 | * Explodes string into array, optionally trims values and skips empty ones. |
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290 | * |
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291 | * @param string $string String to be exploded. |
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292 | * @param string $delimiter Delimiter. Default is ','. |
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293 | * @param mixed $trim Whether to trim each element. Can be: |
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294 | * - boolean - to trim normally; |
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295 | * - string - custom characters to trim. Will be passed as a second argument to `trim()` function. |
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296 | * - callable - will be called for each value instead of trim. Takes the only argument - value. |
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297 | * @param bool $skipEmpty Whether to skip empty strings between delimiters. Default is false. |
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298 | * @return array |
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299 | * @since 2.0.4 |
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300 | */ |
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301 | 1 | public static function explode($string, $delimiter = ',', $trim = true, $skipEmpty = false) |
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302 | { |
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303 | 1 | $result = explode($delimiter, $string); |
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304 | 1 | if ($trim !== false) { |
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305 | 1 | if ($trim === true) { |
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306 | 1 | $trim = 'trim'; |
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307 | 1 | } elseif (!is_callable($trim)) { |
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308 | $trim = function ($v) use ($trim) { |
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309 | 1 | return trim($v, $trim); |
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310 | 1 | }; |
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311 | } |
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312 | 1 | $result = array_map($trim, $result); |
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313 | } |
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314 | 1 | if ($skipEmpty) { |
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315 | // Wrapped with array_values to make array keys sequential after empty values removing |
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316 | 1 | $result = array_values(array_filter($result, function ($value) { |
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317 | 1 | return $value !== ''; |
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318 | 1 | })); |
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319 | } |
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320 | |||||
321 | 1 | return $result; |
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322 | } |
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323 | |||||
324 | /** |
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325 | * Counts words in a string. |
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326 | * |
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327 | * @param string $string the text to calculate |
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328 | * @return int |
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329 | * @since 2.0.8 |
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330 | */ |
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331 | 2 | public static function countWords($string) |
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332 | { |
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333 | 2 | return count(preg_split('/\s+/u', $string, 0, PREG_SPLIT_NO_EMPTY)); |
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334 | } |
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335 | |||||
336 | /** |
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337 | * Returns string representation of number value with replaced commas to dots, if decimal point |
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338 | * of current locale is comma. |
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339 | * |
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340 | * @param int|float|string $value the value to normalize. |
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341 | * @return string |
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342 | * @since 2.0.11 |
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343 | */ |
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344 | 34 | public static function normalizeNumber($value) |
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345 | { |
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346 | 34 | $value = (string) $value; |
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347 | |||||
348 | 34 | $localeInfo = localeconv(); |
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349 | 34 | $decimalSeparator = isset($localeInfo['decimal_point']) ? $localeInfo['decimal_point'] : null; |
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350 | |||||
351 | 34 | if ($decimalSeparator !== null && $decimalSeparator !== '.') { |
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352 | 4 | $value = str_replace($decimalSeparator, '.', $value); |
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353 | } |
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354 | |||||
355 | 34 | return $value; |
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356 | } |
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357 | |||||
358 | /** |
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359 | * Encodes string into "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648). |
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360 | * |
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361 | * > Note: Base 64 padding `=` may be at the end of the returned string. |
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362 | * > `=` is not transparent to URL encoding. |
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363 | * |
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364 | * @param string $input the string to encode. |
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365 | * @return string encoded string. |
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366 | * @see https://tools.ietf.org/html/rfc4648#page-7 |
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367 | * @since 2.0.12 |
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368 | */ |
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369 | 111 | public static function base64UrlEncode($input) |
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370 | { |
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371 | 111 | return strtr(base64_encode($input), '+/', '-_'); |
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372 | } |
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373 | |||||
374 | /** |
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375 | * Decodes "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648). |
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376 | * |
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377 | * @param string $input encoded string. |
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378 | * @return string decoded string. |
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379 | * @see https://tools.ietf.org/html/rfc4648#page-7 |
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380 | * @since 2.0.12 |
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381 | */ |
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382 | 13 | public static function base64UrlDecode($input) |
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383 | { |
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384 | 13 | return base64_decode(strtr($input, '-_', '+/')); |
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385 | } |
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386 | |||||
387 | /** |
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388 | * Safely casts a float to string independent of the current locale. |
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389 | * The decimal separator will always be `.`. |
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390 | * |
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391 | * @param float|int $number a floating point number or integer. |
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392 | * @return string the string representation of the number. |
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393 | * @since 2.0.13 |
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394 | */ |
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395 | 10 | public static function floatToString($number) |
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396 | { |
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397 | // . and , are the only decimal separators known in ICU data, |
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398 | // so its safe to call str_replace here |
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399 | 10 | return str_replace(',', '.', (string) $number); |
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400 | } |
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401 | |||||
402 | /** |
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403 | * Checks if the passed string would match the given shell wildcard pattern. |
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404 | * This function emulates [[fnmatch()]], which may be unavailable at certain environment, using PCRE. |
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405 | * |
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406 | * @param string $pattern the shell wildcard pattern. |
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407 | * @param string $string the tested string. |
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408 | * @param array $options options for matching. Valid options are: |
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409 | * |
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410 | * - caseSensitive: bool, whether pattern should be case sensitive. Defaults to `true`. |
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411 | * - escape: bool, whether backslash escaping is enabled. Defaults to `true`. |
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412 | * - filePath: bool, whether slashes in string only matches slashes in the given pattern. Defaults to `false`. |
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413 | * |
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414 | * @return bool whether the string matches pattern or not. |
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415 | * @since 2.0.14 |
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416 | */ |
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417 | 243 | public static function matchWildcard($pattern, $string, $options = []) |
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418 | { |
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419 | 243 | if ($pattern === '*' && empty($options['filePath'])) { |
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420 | 5 | return true; |
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421 | } |
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422 | |||||
423 | $replacements = [ |
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424 | 239 | '\\\\\\\\' => '\\\\', |
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425 | '\\\\\\*' => '[*]', |
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426 | '\\\\\\?' => '[?]', |
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427 | '\*' => '.*', |
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428 | '\?' => '.', |
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429 | '\[\!' => '[^', |
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430 | '\[' => '[', |
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431 | '\]' => ']', |
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432 | '\-' => '-', |
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433 | ]; |
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434 | |||||
435 | 239 | if (isset($options['escape']) && !$options['escape']) { |
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436 | 9 | unset($replacements['\\\\\\\\']); |
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437 | 9 | unset($replacements['\\\\\\*']); |
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438 | 9 | unset($replacements['\\\\\\?']); |
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439 | } |
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440 | |||||
441 | 239 | if (!empty($options['filePath'])) { |
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442 | 12 | $replacements['\*'] = '[^/\\\\]*'; |
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443 | 12 | $replacements['\?'] = '[^/\\\\]'; |
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444 | } |
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445 | |||||
446 | 239 | $pattern = strtr(preg_quote($pattern, '#'), $replacements); |
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447 | 239 | $pattern = '#^' . $pattern . '$#us'; |
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448 | |||||
449 | 239 | if (isset($options['caseSensitive']) && !$options['caseSensitive']) { |
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450 | 2 | $pattern .= 'i'; |
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451 | } |
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452 | |||||
453 | 239 | return preg_match($pattern, (string)$string) === 1; |
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454 | } |
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455 | |||||
456 | /** |
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457 | * This method provides a unicode-safe implementation of built-in PHP function `ucfirst()`. |
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458 | * |
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459 | * @param string $string the string to be proceeded |
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460 | * @param string $encoding Optional, defaults to "UTF-8" |
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461 | * @return string |
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462 | * @see https://www.php.net/manual/en/function.ucfirst.php |
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463 | * @since 2.0.16 |
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464 | */ |
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465 | 227 | public static function mb_ucfirst($string, $encoding = 'UTF-8') |
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466 | { |
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467 | 227 | $firstChar = mb_substr((string)$string, 0, 1, $encoding); |
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468 | 227 | $rest = mb_substr((string)$string, 1, null, $encoding); |
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469 | |||||
470 | 227 | return mb_strtoupper($firstChar, $encoding) . $rest; |
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471 | } |
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472 | |||||
473 | /** |
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474 | * This method provides a unicode-safe implementation of built-in PHP function `ucwords()`. |
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475 | * |
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476 | * @param string $string the string to be proceeded |
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477 | * @param string $encoding Optional, defaults to "UTF-8" |
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478 | * @return string |
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479 | * @see https://www.php.net/manual/en/function.ucwords |
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480 | * @since 2.0.16 |
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481 | */ |
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482 | 224 | public static function mb_ucwords($string, $encoding = 'UTF-8') |
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483 | { |
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484 | 224 | $string = (string) $string; |
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485 | 224 | if (empty($string)) { |
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486 | 3 | return $string; |
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487 | } |
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488 | |||||
489 | 221 | $parts = preg_split('/(\s+\W+\s+|^\W+\s+|\s+)/u', $string, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); |
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490 | 221 | $ucfirstEven = trim(mb_substr($parts[0], -1, 1, $encoding)) === ''; |
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491 | 221 | foreach ($parts as $key => $value) { |
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492 | 221 | $isEven = (bool)($key % 2); |
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493 | 221 | if ($ucfirstEven === $isEven) { |
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494 | 221 | $parts[$key] = static::mb_ucfirst($value, $encoding); |
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495 | } |
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496 | } |
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497 | |||||
498 | 221 | return implode('', $parts); |
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499 | } |
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500 | |||||
501 | /** |
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502 | * Masks a portion of a string with a repeated character. |
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503 | * This method is multibyte-safe. |
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504 | * |
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505 | * @param string $string The input string. |
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506 | * @param int $start The starting position from where to begin masking. |
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507 | * This can be a positive or negative integer. |
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508 | * Positive values count from the beginning, |
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509 | * negative values count from the end of the string. |
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510 | * @param int $length The length of the section to be masked. |
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511 | * The masking will start from the $start position |
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512 | * and continue for $length characters. |
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513 | * @param string $mask The character to use for masking. The default is '*'. |
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514 | * @return string The masked string. |
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515 | */ |
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516 | 1 | public static function mask($string, $start, $length, $mask = '*') { |
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517 | 1 | $strLength = mb_strlen($string, 'UTF-8'); |
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518 | |||||
519 | // Return original string if start position is out of bounds |
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520 | 1 | if ($start >= $strLength || $start < -$strLength) { |
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521 | 1 | return $string; |
|||
522 | } |
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523 | |||||
524 | 1 | $masked = mb_substr($string, 0, $start, 'UTF-8'); |
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525 | 1 | $masked .= str_repeat($mask, abs($length)); |
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526 | 1 | $masked .= mb_substr($string, $start + abs($length), null, 'UTF-8'); |
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$start + abs($length) of type double is incompatible with the type integer expected by parameter $start of mb_substr() .
(
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527 | |||||
528 | 1 | return $masked; |
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529 | } |
||||
530 | } |
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531 |