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<?php |
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/** |
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* @link https://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license https://www.yiiframework.com/license/ |
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*/ |
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namespace yii\helpers; |
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use Yii; |
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/** |
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* BaseStringHelper provides concrete implementation for [[StringHelper]]. |
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* |
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* Do not use BaseStringHelper. Use [[StringHelper]] instead. |
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* |
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* @author Qiang Xue <[email protected]> |
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* @author Alex Makarov <[email protected]> |
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* @since 2.0 |
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*/ |
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class BaseStringHelper |
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{ |
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/** |
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* Returns the number of bytes in the given string. |
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* This method ensures the string is treated as a byte array by using `mb_strlen()`. |
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* |
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* @param string $string the string being measured for length |
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* @return int the number of bytes in the given string. |
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*/ |
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public static function byteLength($string) |
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{ |
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return mb_strlen((string)$string, '8bit'); |
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} |
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/** |
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* Returns the portion of string specified by the start and length parameters. |
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* This method ensures the string is treated as a byte array by using `mb_substr()`. |
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* |
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* @param string $string the input string. Must be one character or longer. |
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* @param int $start the starting position |
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* @param int|null $length the desired portion length. If not specified or `null`, there will be |
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* no limit on length i.e. the output will be until the end of the string. |
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* @return string the extracted part of string, or FALSE on failure or an empty string. |
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* @see https://www.php.net/manual/en/function.substr.php |
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*/ |
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public static function byteSubstr($string, $start, $length = null) |
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{ |
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if ($length === null) { |
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$length = static::byteLength($string); |
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} |
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return mb_substr((string)$string, $start, $length, '8bit'); |
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} |
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/** |
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* Returns the trailing name component of a path. |
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* This method is similar to the php function `basename()` except that it will |
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* treat both \ and / as directory separators, independent of the operating system. |
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* This method was mainly created to work on php namespaces. When working with real |
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* file paths, php's `basename()` should work fine for you. |
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* Note: this method is not aware of the actual filesystem, or path components such as "..". |
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* |
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* @param string $path A path string. |
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* @param string $suffix If the name component ends in suffix this will also be cut off. |
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* @return string the trailing name component of the given path. |
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* @see https://www.php.net/manual/en/function.basename.php |
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*/ |
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public static function basename($path, $suffix = '') |
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{ |
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$path = (string)$path; |
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$len = mb_strlen($suffix); |
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if ($len > 0 && mb_substr($path, -$len) === $suffix) { |
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$path = mb_substr($path, 0, -$len); |
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} |
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$path = rtrim(str_replace('\\', '/', $path), '/'); |
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$pos = mb_strrpos($path, '/'); |
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if ($pos !== false) { |
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return mb_substr($path, $pos + 1); |
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} |
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return $path; |
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} |
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/** |
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* Returns parent directory's path. |
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* This method is similar to `dirname()` except that it will treat |
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* both \ and / as directory separators, independent of the operating system. |
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* |
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* @param string $path A path string. |
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* @return string the parent directory's path. |
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* @see https://www.php.net/manual/en/function.basename.php |
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*/ |
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public static function dirname($path) |
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{ |
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$normalizedPath = rtrim( |
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str_replace('\\', '/', (string)$path), |
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'/' |
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); |
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$separatorPosition = mb_strrpos($normalizedPath, '/'); |
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if ($separatorPosition !== false) { |
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return mb_substr($path, 0, $separatorPosition); |
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} |
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return ''; |
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} |
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/** |
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* Truncates a string to the number of characters specified. |
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* |
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* In order to truncate for an exact length, the $suffix char length must be counted towards the $length. For example |
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* to have a string which is exactly 255 long with $suffix `...` of 3 chars, then `StringHelper::truncate($string, 252, '...')` |
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* must be used to ensure you have 255 long string afterwards. |
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* |
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* @param string $string The string to truncate. |
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* @param int $length How many characters from original string to include into truncated string. |
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* @param string $suffix String to append to the end of truncated string. |
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* @param string|null $encoding The charset to use, defaults to charset currently used by application. |
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* @param bool $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags. |
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* This parameter is available since version 2.0.1. |
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* @return string the truncated string. |
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*/ |
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public static function truncate($string, $length, $suffix = '...', $encoding = null, $asHtml = false) |
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{ |
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$string = (string)$string; |
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if ($encoding === null) { |
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$encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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} |
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if ($asHtml) { |
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return static::truncateHtml($string, $length, $suffix, $encoding); |
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} |
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if (mb_strlen($string, $encoding) > $length) { |
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return rtrim(mb_substr($string, 0, $length, $encoding)) . $suffix; |
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} |
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return $string; |
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} |
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/** |
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* Truncates a string to the number of words specified. |
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* |
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* @param string $string The string to truncate. |
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* @param int $count How many words from original string to include into truncated string. |
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* @param string $suffix String to append to the end of truncated string. |
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* @param bool $asHtml Whether to treat the string being truncated as HTML and preserve proper HTML tags. |
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* This parameter is available since version 2.0.1. |
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* @return string the truncated string. |
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*/ |
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public static function truncateWords($string, $count, $suffix = '...', $asHtml = false) |
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{ |
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if ($asHtml) { |
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return static::truncateHtml($string, $count, $suffix); |
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} |
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$words = preg_split('/(\s+)/u', trim($string), 0, PREG_SPLIT_DELIM_CAPTURE); |
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if (count($words) / 2 > $count) { |
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return implode('', array_slice($words, 0, ($count * 2) - 1)) . $suffix; |
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} |
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return $string; |
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} |
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/** |
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* Truncate a string while preserving the HTML. |
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* |
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* @param string $string The string to truncate |
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* @param int $count The counter |
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* @param string $suffix String to append to the end of the truncated string. |
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* @param string|bool $encoding Encoding flag or charset. |
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* @return string |
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* @since 2.0.1 |
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*/ |
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protected static function truncateHtml($string, $count, $suffix, $encoding = false) |
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{ |
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$config = \HTMLPurifier_Config::create(null); |
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if (Yii::$app !== null) { |
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$config->set('Cache.SerializerPath', Yii::$app->getRuntimePath()); |
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} |
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$lexer = \HTMLPurifier_Lexer::create($config); |
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$tokens = $lexer->tokenizeHTML($string, $config, new \HTMLPurifier_Context()); |
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$openTokens = []; |
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$totalCount = 0; |
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$depth = 0; |
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$truncated = []; |
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foreach ($tokens as $token) { |
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if ($token instanceof \HTMLPurifier_Token_Start) { //Tag begins |
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$openTokens[$depth] = $token->name; |
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$truncated[] = $token; |
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++$depth; |
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} elseif ($token instanceof \HTMLPurifier_Token_Text && $totalCount <= $count) { //Text |
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if (false === $encoding) { |
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preg_match('/^(\s*)/um', $token->data, $prefixSpace) ?: $prefixSpace = ['', '']; |
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$token->data = $prefixSpace[1] . self::truncateWords(ltrim($token->data), $count - $totalCount, ''); |
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$currentCount = self::countWords($token->data); |
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} else { |
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$token->data = self::truncate($token->data, $count - $totalCount, '', $encoding); |
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$currentCount = mb_strlen($token->data, $encoding); |
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} |
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$totalCount += $currentCount; |
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$truncated[] = $token; |
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} elseif ($token instanceof \HTMLPurifier_Token_End) { //Tag ends |
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if ($token->name === $openTokens[$depth - 1]) { |
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--$depth; |
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unset($openTokens[$depth]); |
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$truncated[] = $token; |
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} |
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} elseif ($token instanceof \HTMLPurifier_Token_Empty) { //Self contained tags, i.e. <img/> etc. |
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$truncated[] = $token; |
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} |
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if ($totalCount >= $count) { |
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if (0 < count($openTokens)) { |
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krsort($openTokens); |
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foreach ($openTokens as $name) { |
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$truncated[] = new \HTMLPurifier_Token_End($name); |
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} |
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} |
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break; |
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} |
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} |
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$context = new \HTMLPurifier_Context(); |
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$generator = new \HTMLPurifier_Generator($config, $context); |
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return $generator->generateFromTokens($truncated) . ($totalCount >= $count ? $suffix : ''); |
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} |
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/** |
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* Check if given string starts with specified substring. Binary and multibyte safe. |
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* |
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* @param string $string Input string |
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* @param string $with Part to search inside the $string |
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* @param bool $caseSensitive Case sensitive search. Default is true. When case sensitive is enabled, `$with` must |
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* exactly match the starting of the string in order to get a true value. |
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* @return bool Returns true if first input starts with second input, false otherwise |
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*/ |
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public static function startsWith($string, $with, $caseSensitive = true) |
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{ |
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$string = (string)$string; |
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$with = (string)$with; |
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if (!$bytes = static::byteLength($with)) { |
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return true; |
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} |
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if ($caseSensitive) { |
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return strncmp($string, $with, $bytes) === 0; |
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} |
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$encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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$string = static::byteSubstr($string, 0, $bytes); |
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return mb_strtolower($string, $encoding) === mb_strtolower($with, $encoding); |
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} |
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/** |
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* Check if given string ends with specified substring. Binary and multibyte safe. |
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* |
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* @param string $string Input string to check |
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* @param string $with Part to search inside of the `$string`. |
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* @param bool $caseSensitive Case sensitive search. Default is true. When case sensitive is enabled, `$with` must |
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* exactly match the ending of the string in order to get a true value. |
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* @return bool Returns true if first input ends with second input, false otherwise |
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*/ |
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public static function endsWith($string, $with, $caseSensitive = true) |
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{ |
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$string = (string)$string; |
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$with = (string)$with; |
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if (!$bytes = static::byteLength($with)) { |
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return true; |
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} |
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if ($caseSensitive) { |
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// Warning check, see https://php.net/substr-compare#refsect1-function.substr-compare-returnvalues |
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if (static::byteLength($string) < $bytes) { |
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return false; |
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} |
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return substr_compare($string, $with, -$bytes, $bytes) === 0; |
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} |
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$encoding = Yii::$app ? Yii::$app->charset : 'UTF-8'; |
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$string = static::byteSubstr($string, -$bytes); |
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return mb_strtolower($string, $encoding) === mb_strtolower($with, $encoding); |
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} |
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/** |
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* Explodes string into array, optionally trims values and skips empty ones. |
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* |
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* @param string $string String to be exploded. |
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* @param string $delimiter Delimiter. Default is ','. |
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* @param mixed $trim Whether to trim each element. Can be: |
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* - boolean - to trim normally; |
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* - string - custom characters to trim. Will be passed as a second argument to `trim()` function. |
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* - callable - will be called for each value instead of trim. Takes the only argument - value. |
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* @param bool $skipEmpty Whether to skip empty strings between delimiters. Default is false. |
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* @return array |
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* @since 2.0.4 |
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*/ |
301
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1 |
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public static function explode($string, $delimiter = ',', $trim = true, $skipEmpty = false) |
302
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{ |
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1 |
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$result = explode($delimiter, $string); |
304
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1 |
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if ($trim !== false) { |
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1 |
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if ($trim === true) { |
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1 |
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$trim = 'trim'; |
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1 |
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} elseif (!is_callable($trim)) { |
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$trim = function ($v) use ($trim) { |
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1 |
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return trim($v, $trim); |
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1 |
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}; |
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} |
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1 |
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$result = array_map($trim, $result); |
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} |
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1 |
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if ($skipEmpty) { |
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// Wrapped with array_values to make array keys sequential after empty values removing |
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1 |
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$result = array_values(array_filter($result, function ($value) { |
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1 |
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return $value !== ''; |
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1 |
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})); |
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} |
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1 |
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return $result; |
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} |
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/** |
325
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* Counts words in a string. |
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* |
327
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* @param string $string the text to calculate |
328
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* @return int |
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* @since 2.0.8 |
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*/ |
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2 |
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public static function countWords($string) |
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{ |
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2 |
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return count(preg_split('/\s+/u', $string, 0, PREG_SPLIT_NO_EMPTY)); |
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} |
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336
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/** |
337
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* Returns string representation of number value with replaced commas to dots, if decimal point |
338
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|
|
* of current locale is comma. |
339
|
|
|
* |
340
|
|
|
* @param int|float|string $value the value to normalize. |
341
|
|
|
* @return string |
342
|
|
|
* @since 2.0.11 |
343
|
|
|
*/ |
344
|
34 |
|
public static function normalizeNumber($value) |
345
|
|
|
{ |
346
|
34 |
|
$value = (string) $value; |
347
|
|
|
|
348
|
34 |
|
$localeInfo = localeconv(); |
349
|
34 |
|
$decimalSeparator = isset($localeInfo['decimal_point']) ? $localeInfo['decimal_point'] : null; |
350
|
|
|
|
351
|
34 |
|
if ($decimalSeparator !== null && $decimalSeparator !== '.') { |
352
|
4 |
|
$value = str_replace($decimalSeparator, '.', $value); |
353
|
|
|
} |
354
|
|
|
|
355
|
34 |
|
return $value; |
356
|
|
|
} |
357
|
|
|
|
358
|
|
|
/** |
359
|
|
|
* Encodes string into "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648). |
360
|
|
|
* |
361
|
|
|
* > Note: Base 64 padding `=` may be at the end of the returned string. |
362
|
|
|
* > `=` is not transparent to URL encoding. |
363
|
|
|
* |
364
|
|
|
* @param string $input the string to encode. |
365
|
|
|
* @return string encoded string. |
366
|
|
|
* @see https://tools.ietf.org/html/rfc4648#page-7 |
367
|
|
|
* @since 2.0.12 |
368
|
|
|
*/ |
369
|
111 |
|
public static function base64UrlEncode($input) |
370
|
|
|
{ |
371
|
111 |
|
return strtr(base64_encode($input), '+/', '-_'); |
372
|
|
|
} |
373
|
|
|
|
374
|
|
|
/** |
375
|
|
|
* Decodes "Base 64 Encoding with URL and Filename Safe Alphabet" (RFC 4648). |
376
|
|
|
* |
377
|
|
|
* @param string $input encoded string. |
378
|
|
|
* @return string decoded string. |
379
|
|
|
* @see https://tools.ietf.org/html/rfc4648#page-7 |
380
|
|
|
* @since 2.0.12 |
381
|
|
|
*/ |
382
|
13 |
|
public static function base64UrlDecode($input) |
383
|
|
|
{ |
384
|
13 |
|
return base64_decode(strtr($input, '-_', '+/')); |
385
|
|
|
} |
386
|
|
|
|
387
|
|
|
/** |
388
|
|
|
* Safely casts a float to string independent of the current locale. |
389
|
|
|
* The decimal separator will always be `.`. |
390
|
|
|
* |
391
|
|
|
* @param float|int $number a floating point number or integer. |
392
|
|
|
* @return string the string representation of the number. |
393
|
|
|
* @since 2.0.13 |
394
|
|
|
*/ |
395
|
10 |
|
public static function floatToString($number) |
396
|
|
|
{ |
397
|
|
|
// . and , are the only decimal separators known in ICU data, |
398
|
|
|
// so its safe to call str_replace here |
399
|
10 |
|
return str_replace(',', '.', (string) $number); |
400
|
|
|
} |
401
|
|
|
|
402
|
|
|
/** |
403
|
|
|
* Checks if the passed string would match the given shell wildcard pattern. |
404
|
|
|
* This function emulates [[fnmatch()]], which may be unavailable at certain environment, using PCRE. |
405
|
|
|
* |
406
|
|
|
* @param string $pattern the shell wildcard pattern. |
407
|
|
|
* @param string $string the tested string. |
408
|
|
|
* @param array $options options for matching. Valid options are: |
409
|
|
|
* |
410
|
|
|
* - caseSensitive: bool, whether pattern should be case sensitive. Defaults to `true`. |
411
|
|
|
* - escape: bool, whether backslash escaping is enabled. Defaults to `true`. |
412
|
|
|
* - filePath: bool, whether slashes in string only matches slashes in the given pattern. Defaults to `false`. |
413
|
|
|
* |
414
|
|
|
* @return bool whether the string matches pattern or not. |
415
|
|
|
* @since 2.0.14 |
416
|
|
|
*/ |
417
|
243 |
|
public static function matchWildcard($pattern, $string, $options = []) |
418
|
|
|
{ |
419
|
243 |
|
if ($pattern === '*' && empty($options['filePath'])) { |
420
|
5 |
|
return true; |
421
|
|
|
} |
422
|
|
|
|
423
|
|
|
$replacements = [ |
424
|
239 |
|
'\\\\\\\\' => '\\\\', |
425
|
|
|
'\\\\\\*' => '[*]', |
426
|
|
|
'\\\\\\?' => '[?]', |
427
|
|
|
'\*' => '.*', |
428
|
|
|
'\?' => '.', |
429
|
|
|
'\[\!' => '[^', |
430
|
|
|
'\[' => '[', |
431
|
|
|
'\]' => ']', |
432
|
|
|
'\-' => '-', |
433
|
|
|
]; |
434
|
|
|
|
435
|
239 |
|
if (isset($options['escape']) && !$options['escape']) { |
436
|
9 |
|
unset($replacements['\\\\\\\\']); |
437
|
9 |
|
unset($replacements['\\\\\\*']); |
438
|
9 |
|
unset($replacements['\\\\\\?']); |
439
|
|
|
} |
440
|
|
|
|
441
|
239 |
|
if (!empty($options['filePath'])) { |
442
|
12 |
|
$replacements['\*'] = '[^/\\\\]*'; |
443
|
12 |
|
$replacements['\?'] = '[^/\\\\]'; |
444
|
|
|
} |
445
|
|
|
|
446
|
239 |
|
$pattern = strtr(preg_quote($pattern, '#'), $replacements); |
447
|
239 |
|
$pattern = '#^' . $pattern . '$#us'; |
448
|
|
|
|
449
|
239 |
|
if (isset($options['caseSensitive']) && !$options['caseSensitive']) { |
450
|
2 |
|
$pattern .= 'i'; |
451
|
|
|
} |
452
|
|
|
|
453
|
239 |
|
return preg_match($pattern, (string)$string) === 1; |
454
|
|
|
} |
455
|
|
|
|
456
|
|
|
/** |
457
|
|
|
* This method provides a unicode-safe implementation of built-in PHP function `ucfirst()`. |
458
|
|
|
* |
459
|
|
|
* @param string $string the string to be proceeded |
460
|
|
|
* @param string $encoding Optional, defaults to "UTF-8" |
461
|
|
|
* @return string |
462
|
|
|
* @see https://www.php.net/manual/en/function.ucfirst.php |
463
|
|
|
* @since 2.0.16 |
464
|
|
|
*/ |
465
|
227 |
|
public static function mb_ucfirst($string, $encoding = 'UTF-8') |
466
|
|
|
{ |
467
|
227 |
|
$firstChar = mb_substr((string)$string, 0, 1, $encoding); |
468
|
227 |
|
$rest = mb_substr((string)$string, 1, null, $encoding); |
469
|
|
|
|
470
|
227 |
|
return mb_strtoupper($firstChar, $encoding) . $rest; |
471
|
|
|
} |
472
|
|
|
|
473
|
|
|
/** |
474
|
|
|
* This method provides a unicode-safe implementation of built-in PHP function `ucwords()`. |
475
|
|
|
* |
476
|
|
|
* @param string $string the string to be proceeded |
477
|
|
|
* @param string $encoding Optional, defaults to "UTF-8" |
478
|
|
|
* @return string |
479
|
|
|
* @see https://www.php.net/manual/en/function.ucwords |
480
|
|
|
* @since 2.0.16 |
481
|
|
|
*/ |
482
|
224 |
|
public static function mb_ucwords($string, $encoding = 'UTF-8') |
483
|
|
|
{ |
484
|
224 |
|
$string = (string) $string; |
485
|
224 |
|
if (empty($string)) { |
486
|
3 |
|
return $string; |
487
|
|
|
} |
488
|
|
|
|
489
|
221 |
|
$parts = preg_split('/(\s+\W+\s+|^\W+\s+|\s+)/u', $string, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE); |
490
|
221 |
|
$ucfirstEven = trim(mb_substr($parts[0], -1, 1, $encoding)) === ''; |
491
|
221 |
|
foreach ($parts as $key => $value) { |
492
|
221 |
|
$isEven = (bool)($key % 2); |
493
|
221 |
|
if ($ucfirstEven === $isEven) { |
494
|
221 |
|
$parts[$key] = static::mb_ucfirst($value, $encoding); |
495
|
|
|
} |
496
|
|
|
} |
497
|
|
|
|
498
|
221 |
|
return implode('', $parts); |
499
|
|
|
} |
500
|
|
|
|
501
|
|
|
/** |
502
|
|
|
* Masks a portion of a string with a repeated character. |
503
|
|
|
* This method is multibyte-safe. |
504
|
|
|
* |
505
|
|
|
* @param string $string The input string. |
506
|
|
|
* @param int $start The starting position from where to begin masking. |
507
|
|
|
* This can be a positive or negative integer. |
508
|
|
|
* Positive values count from the beginning, |
509
|
|
|
* negative values count from the end of the string. |
510
|
|
|
* @param int $length The length of the section to be masked. |
511
|
|
|
* The masking will start from the $start position |
512
|
|
|
* and continue for $length characters. |
513
|
|
|
* @param string $mask The character to use for masking. The default is '*'. |
514
|
|
|
* @return string The masked string. |
515
|
|
|
*/ |
516
|
1 |
|
public static function mask($string, $start, $length, $mask = '*') { |
517
|
1 |
|
$strLength = mb_strlen($string, 'UTF-8'); |
518
|
|
|
|
519
|
|
|
// Return original string if start position is out of bounds |
520
|
1 |
|
if ($start >= $strLength || $start < -$strLength) { |
521
|
1 |
|
return $string; |
522
|
|
|
} |
523
|
|
|
|
524
|
1 |
|
$masked = mb_substr($string, 0, $start, 'UTF-8'); |
525
|
1 |
|
$masked .= str_repeat($mask, abs($length)); |
|
|
|
|
526
|
1 |
|
$masked .= mb_substr($string, $start + abs($length), null, 'UTF-8'); |
|
|
|
|
527
|
|
|
|
528
|
1 |
|
return $masked; |
529
|
|
|
} |
530
|
|
|
} |
531
|
|
|
|