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: /mnt/lmsestudio-instance-vol002/lms_702fba0946d4/vendor/danielstjules/stringy/src/ [ drwxr-xr-x ]
name : Stringy.php <?php namespace Stringy; class Stringy implements \Countable, \IteratorAggregate, \ArrayAccess { /** * An instance's string. * * @var string */ protected $str; /** * The string's encoding, which should be one of the mbstring module's * supported encodings. * * @var string */ protected $encoding; /** * Initializes a Stringy object and assigns both str and encoding properties * the supplied values. $str is cast to a string prior to assignment, and if * $encoding is not specified, it defaults to mb_internal_encoding(). Throws * an InvalidArgumentException if the first argument is an array or object * without a __toString method. * * @param mixed $str Value to modify, after being cast to string * @param string $encoding The character encoding * @throws \InvalidArgumentException if an array or object without a * __toString method is passed as the first argument */ public function __construct($str, $encoding = null) { if (is_array($str)) { throw new \InvalidArgumentException( 'Passed value cannot be an array' ); } elseif (is_object($str) && !method_exists($str, '__toString')) { throw new \InvalidArgumentException( 'Passed object must have a __toString method' ); } $this->str = (string) $str; $this->encoding = $encoding ?: mb_internal_encoding(); } /** * Creates a Stringy object and assigns both str and encoding properties * the supplied values. $str is cast to a string prior to assignment, and if * $encoding is not specified, it defaults to mb_internal_encoding(). It * then returns the initialized object. Throws an InvalidArgumentException * if the first argument is an array or object without a __toString method. * * @param mixed $str Value to modify, after being cast to string * @param string $encoding The character encoding * @return Stringy A Stringy object * @throws \InvalidArgumentException if an array or object without a * __toString method is passed as the first argument */ public static function create($str, $encoding = null) { return new static($str, $encoding); } /** * Returns the value in $str. * * @return string The current value of the $str property */ public function __toString() { return $this->str; } /** * Returns the encoding used by the Stringy object. * * @return string The current value of the $encoding property */ public function getEncoding() { return $this->encoding; } /** * Returns the length of the string, implementing the countable interface. * * @return int The number of characters in the string, given the encoding */ public function count() { return $this->length(); } /** * Returns a new ArrayIterator, thus implementing the IteratorAggregate * interface. The ArrayIterator's constructor is passed an array of chars * in the multibyte string. This enables the use of foreach with instances * of Stringy\Stringy. * * @return \ArrayIterator An iterator for the characters in the string */ public function getIterator() { return new \ArrayIterator($this->chars()); } /** * Returns whether or not a character exists at an index. Offsets may be * negative to count from the last character in the string. Implements * part of the ArrayAccess interface. * * @param mixed $offset The index to check * @return boolean Whether or not the index exists */ public function offsetExists($offset) { $length = $this->length(); $offset = (int) $offset; if ($offset >= 0) { return ($length > $offset); } return ($length >= abs($offset)); } /** * Returns the character at the given index. Offsets may be negative to * count from the last character in the string. Implements part of the * ArrayAccess interface, and throws an OutOfBoundsException if the index * does not exist. * * @param mixed $offset The index from which to retrieve the char * @return mixed The character at the specified index * @throws \OutOfBoundsException If the positive or negative offset does * not exist */ public function offsetGet($offset) { $offset = (int) $offset; $length = $this->length(); if (($offset >= 0 && $length <= $offset) || $length < abs($offset)) { throw new \OutOfBoundsException('No character exists at the index'); } return mb_substr($this->str, $offset, 1, $this->encoding); } /** * Implements part of the ArrayAccess interface, but throws an exception * when called. This maintains the immutability of Stringy objects. * * @param mixed $offset The index of the character * @param mixed $value Value to set * @throws \Exception When called */ public function offsetSet($offset, $value) { // Stringy is immutable, cannot directly set char throw new \Exception('Stringy object is immutable, cannot modify char'); } /** * Implements part of the ArrayAccess interface, but throws an exception * when called. This maintains the immutability of Stringy objects. * * @param mixed $offset The index of the character * @throws \Exception When called */ public function offsetUnset($offset) { // Don't allow directly modifying the string throw new \Exception('Stringy object is immutable, cannot unset char'); } /** * Returns an array consisting of the characters in the string. * * @return array An array of string chars */ public function chars() { $chars = array(); for ($i = 0, $l = $this->length(); $i < $l; $i++) { $chars[] = $this->at($i)->str; } return $chars; } /** * Converts the first character of the supplied string to upper case. * * @return Stringy Object with the first character of $str being upper case */ public function upperCaseFirst() { $first = mb_substr($this->str, 0, 1, $this->encoding); $rest = mb_substr($this->str, 1, $this->length() - 1, $this->encoding); $str = mb_strtoupper($first, $this->encoding) . $rest; return static::create($str, $this->encoding); } /** * Converts the first character of the string to lower case. * * @return Stringy Object with the first character of $str being lower case */ public function lowerCaseFirst() { $first = mb_substr($this->str, 0, 1, $this->encoding); $rest = mb_substr($this->str, 1, $this->length() - 1, $this->encoding); $str = mb_strtolower($first, $this->encoding) . $rest; return static::create($str, $this->encoding); } /** * Returns a camelCase version of the string. Trims surrounding spaces, * capitalizes letters following digits, spaces, dashes and underscores, * and removes spaces, dashes, as well as underscores. * * @return Stringy Object with $str in camelCase */ public function camelize() { $encoding = $this->encoding; $stringy = $this->trim()->lowerCaseFirst(); $camelCase = preg_replace_callback( '/[-_\s]+(.)?/u', function ($match) use ($encoding) { return $match[1] ? mb_strtoupper($match[1], $encoding) : ''; }, $stringy->str ); $stringy->str = preg_replace_callback( '/[\d]+(.)?/u', function ($match) use ($encoding) { return mb_strtoupper($match[0], $encoding); }, $camelCase ); return $stringy; } /** * Returns an UpperCamelCase version of the supplied string. It trims * surrounding spaces, capitalizes letters following digits, spaces, dashes * and underscores, and removes spaces, dashes, underscores. * * @return Stringy Object with $str in UpperCamelCase */ public function upperCamelize() { return $this->camelize()->upperCaseFirst(); } /** * Returns a lowercase and trimmed string separated by dashes. Dashes are * inserted before uppercase characters (with the exception of the first * character of the string), and in place of spaces as well as underscores. * * @return Stringy Object with a dasherized $str */ public function dasherize() { return $this->delimit('-'); } /** * Returns a lowercase and trimmed string separated by underscores. * Underscores are inserted before uppercase characters (with the exception * of the first character of the string), and in place of spaces as well as * dashes. * * @return Stringy Object with an underscored $str */ public function underscored() { return $this->delimit('_'); } /** * Returns a lowercase and trimmed string separated by the given delimiter. * Delimiters are inserted before uppercase characters (with the exception * of the first character of the string), and in place of spaces, dashes, * and underscores. Alpha delimiters are not converted to lowercase. * * @param string $delimiter Sequence used to separate parts of the string * @return Stringy Object with a delimited $str */ public function delimit($delimiter) { // Save current regex encoding so we can reset it after $regexEncoding = mb_regex_encoding(); mb_regex_encoding($this->encoding); $str = mb_ereg_replace('\B([A-Z])', '-\1', $this->trim()); $str = mb_strtolower($str, $this->encoding); $str = mb_ereg_replace('[-_\s]+', $delimiter, $str); mb_regex_encoding($regexEncoding); return static::create($str, $this->encoding); } /** * Returns a case swapped version of the string. * * @return Stringy Object whose $str has each character's case swapped */ public function swapCase() { $stringy = static::create($this->str, $this->encoding); $encoding = $stringy->encoding; $stringy->str = preg_replace_callback( '/[\S]/u', function ($match) use ($encoding) { if ($match[0] == mb_strtoupper($match[0], $encoding)) { return mb_strtolower($match[0], $encoding); } else { return mb_strtoupper($match[0], $encoding); } }, $stringy->str ); return $stringy; } /** * Returns a trimmed string with the first letter of each word capitalized. * Ignores the case of other letters, preserving any acronyms. Also accepts * an array, $ignore, allowing you to list words not to be capitalized. * * @param array $ignore An array of words not to capitalize * @return Stringy Object with a titleized $str */ public function titleize($ignore = null) { $buffer = $this->trim(); $encoding = $this->encoding; $buffer = preg_replace_callback( '/([\S]+)/u', function ($match) use ($encoding, $ignore) { if ($ignore && in_array($match[0], $ignore)) { return $match[0]; } else { $stringy = new Stringy($match[0], $encoding); return (string) $stringy->upperCaseFirst(); } }, $buffer ); return new Stringy($buffer, $encoding); } /** * Capitalizes the first word of the string, replaces underscores with * spaces, and strips '_id'. * * @return Stringy Object with a humanized $str */ public function humanize() { $str = str_replace(array('_id', '_'), array('', ' '), $this->str); return static::create($str, $this->encoding)->trim()->upperCaseFirst(); } /** * Returns a string with smart quotes, ellipsis characters, and dashes from * Windows-1252 (commonly used in Word documents) replaced by their ASCII * equivalents. * * @return Stringy Object whose $str has those characters removed */ public function tidy() { $str = preg_replace(array( '/\x{2026}/u', '/[\x{201C}\x{201D}]/u', '/[\x{2018}\x{2019}]/u', '/[\x{2013}\x{2014}]/u', ), array( '...', '"', "'", '-', ), $this->str); return static::create($str, $this->encoding); } /** * Trims the string and replaces consecutive whitespace characters with a * single space. This includes tabs and newline characters, as well as * multibyte whitespace such as the thin space and ideographic space. * * @return Stringy Object with a trimmed $str and condensed whitespace */ public function collapseWhitespace() { return $this->regexReplace('[[:space:]]+', ' ')->trim(); } /** * Returns an ASCII version of the string. A set of non-ASCII characters are * replaced with their closest ASCII counterparts, and the rest are removed * unless instructed otherwise. * * @param bool $removeUnsupported Whether or not to remove the * unsupported characters * @return Stringy Object whose $str contains only ASCII characters */ public function toAscii($removeUnsupported = true) { $str = $this->str; foreach ($this->charsArray() as $key => $value) { $str = str_replace($value, $key, $str); } if ($removeUnsupported) { $str = preg_replace('/[^\x20-\x7E]/u', '', $str); } return static::create($str, $this->encoding); } /** * Returns the replacements for the toAscii() method. * * @return array An array of replacements. */ protected function charsArray() { static $charsArray; if (isset($charsArray)) return $charsArray; return $charsArray = array( 'a' => array( 'à', 'á', 'ả', 'ã', 'ạ', 'ă', 'ắ', 'ằ', 'ẳ', 'ẵ', 'ặ', 'â', 'ấ', 'ầ', 'ẩ', 'ẫ', 'ậ', 'ä', 'ā', 'ą', 'å', 'α', 'ά', 'ἀ', 'ἁ', 'ἂ', 'ἃ', 'ἄ', 'ἅ', 'ἆ', 'ἇ', 'ᾀ', 'ᾁ', 'ᾂ', 'ᾃ', 'ᾄ', 'ᾅ', 'ᾆ', 'ᾇ', 'ὰ', 'ά', 'ᾰ', 'ᾱ', 'ᾲ', 'ᾳ', 'ᾴ', 'ᾶ', 'ᾷ', 'а', 'أ'), 'b' => array('б', 'β', 'Ъ', 'Ь', 'ب'), 'c' => array('ç', 'ć', 'č', 'ĉ', 'ċ'), 'd' => array('ď', 'ð', 'đ', 'ƌ', 'ȡ', 'ɖ', 'ɗ', 'ᵭ', 'ᶁ', 'ᶑ', 'д', 'δ', 'د', 'ض'), 'e' => array('é', 'è', 'ẻ', 'ẽ', 'ẹ', 'ê', 'ế', 'ề', 'ể', 'ễ', 'ệ', 'ë', 'ē', 'ę', 'ě', 'ĕ', 'ė', 'ε', 'έ', 'ἐ', 'ἑ', 'ἒ', 'ἓ', 'ἔ', 'ἕ', 'ὲ', 'έ', 'е', 'ё', 'э', 'є', 'ə'), 'f' => array('ф', 'φ', 'ف'), 'g' => array('ĝ', 'ğ', 'ġ', 'ģ', 'г', 'ґ', 'γ', 'ج'), 'h' => array('ĥ', 'ħ', 'η', 'ή', 'ح', 'ه'), 'i' => array('í', 'ì', 'ỉ', 'ĩ', 'ị', 'î', 'ï', 'ī', 'ĭ', 'į', 'ı', 'ι', 'ί', 'ϊ', 'ΐ', 'ἰ', 'ἱ', 'ἲ', 'ἳ', 'ἴ', 'ἵ', 'ἶ', 'ἷ', 'ὶ', 'ί', 'ῐ', 'ῑ', 'ῒ', 'ΐ', 'ῖ', 'ῗ', 'і', 'ї', 'и'), 'j' => array('ĵ', 'ј', 'Ј'), 'k' => array('ķ', 'ĸ', 'к', 'κ', 'Ķ', 'ق', 'ك'), 'l' => array('ł', 'ľ', 'ĺ', 'ļ', 'ŀ', 'л', 'λ', 'ل'), 'm' => array('м', 'μ', 'م'), 'n' => array('ñ', 'ń', 'ň', 'ņ', 'ʼn', 'ŋ', 'ν', 'н', 'ن'), 'o' => array('ó', 'ò', 'ỏ', 'õ', 'ọ', 'ô', 'ố', 'ồ', 'ổ', 'ỗ', 'ộ', 'ơ', 'ớ', 'ờ', 'ở', 'ỡ', 'ợ', 'ø', 'ō', 'ő', 'ŏ', 'ο', 'ὀ', 'ὁ', 'ὂ', 'ὃ', 'ὄ', 'ὅ', 'ὸ', 'ό', 'ö', 'о', 'و', 'θ'), 'p' => array('п', 'π'), 'r' => array('ŕ', 'ř', 'ŗ', 'р', 'ρ', 'ر'), 's' => array('ś', 'š', 'ş', 'с', 'σ', 'ș', 'ς', 'س', 'ص'), 't' => array('ť', 'ţ', 'т', 'τ', 'ț', 'ت', 'ط'), 'u' => array('ú', 'ù', 'ủ', 'ũ', 'ụ', 'ư', 'ứ', 'ừ', 'ử', 'ữ', 'ự', 'ü', 'û', 'ū', 'ů', 'ű', 'ŭ', 'ų', 'µ', 'у'), 'v' => array('в'), 'w' => array('ŵ', 'ω', 'ώ'), 'x' => array('χ'), 'y' => array('ý', 'ỳ', 'ỷ', 'ỹ', 'ỵ', 'ÿ', 'ŷ', 'й', 'ы', 'υ', 'ϋ', 'ύ', 'ΰ', 'ي'), 'z' => array('ź', 'ž', 'ż', 'з', 'ζ', 'ز'), 'aa' => array('ع'), 'ae' => array('æ'), 'ch' => array('ч'), 'dj' => array('ђ', 'đ'), 'dz' => array('џ'), 'gh' => array('غ'), 'kh' => array('х', 'خ'), 'lj' => array('љ'), 'nj' => array('њ'), 'oe' => array('œ'), 'ps' => array('ψ'), 'sh' => array('ш'), 'shch' => array('щ'), 'ss' => array('ß'), 'th' => array('þ', 'ث', 'ذ', 'ظ'), 'ts' => array('ц'), 'ya' => array('я'), 'yu' => array('ю'), 'zh' => array('ж'), '(c)' => array('©'), 'A' => array('Á', 'À', 'Ả', 'Ã', 'Ạ', 'Ă', 'Ắ', 'Ằ', 'Ẳ', 'Ẵ', 'Ặ', 'Â', 'Ấ', 'Ầ', 'Ẩ', 'Ẫ', 'Ậ', 'Ä', 'Å', 'Ā', 'Ą', 'Α', 'Ά', 'Ἀ', 'Ἁ', 'Ἂ', 'Ἃ', 'Ἄ', 'Ἅ', 'Ἆ', 'Ἇ', 'ᾈ', 'ᾉ', 'ᾊ', 'ᾋ', 'ᾌ', 'ᾍ', 'ᾎ', 'ᾏ', 'Ᾰ', 'Ᾱ', 'Ὰ', 'Ά', 'ᾼ', 'А'), 'B' => array('Б', 'Β'), 'C' => array('Ç','Ć', 'Č', 'Ĉ', 'Ċ'), 'D' => array('Ď', 'Ð', 'Đ', 'Ɖ', 'Ɗ', 'Ƌ', 'ᴅ', 'ᴆ', 'Д', 'Δ'), 'E' => array('É', 'È', 'Ẻ', 'Ẽ', 'Ẹ', 'Ê', 'Ế', 'Ề', 'Ể', 'Ễ', 'Ệ', 'Ë', 'Ē', 'Ę', 'Ě', 'Ĕ', 'Ė', 'Ε', 'Έ', 'Ἐ', 'Ἑ', 'Ἒ', 'Ἓ', 'Ἔ', 'Ἕ', 'Έ', 'Ὲ', 'Е', 'Ё', 'Э', 'Є', 'Ə'), 'F' => array('Ф', 'Φ'), 'G' => array('Ğ', 'Ġ', 'Ģ', 'Г', 'Ґ', 'Γ'), 'H' => array('Η', 'Ή'), 'I' => array('Í', 'Ì', 'Ỉ', 'Ĩ', 'Ị', 'Î', 'Ï', 'Ī', 'Ĭ', 'Į', 'İ', 'Ι', 'Ί', 'Ϊ', 'Ἰ', 'Ἱ', 'Ἳ', 'Ἴ', 'Ἵ', 'Ἶ', 'Ἷ', 'Ῐ', 'Ῑ', 'Ὶ', 'Ί', 'И', 'І', 'Ї'), 'K' => array('К', 'Κ'), 'L' => array('Ĺ', 'Ł', 'Л', 'Λ', 'Ļ'), 'M' => array('М', 'Μ'), 'N' => array('Ń', 'Ñ', 'Ň', 'Ņ', 'Ŋ', 'Н', 'Ν'), 'O' => array('Ó', 'Ò', 'Ỏ', 'Õ', 'Ọ', 'Ô', 'Ố', 'Ồ', 'Ổ', 'Ỗ', 'Ộ', 'Ơ', 'Ớ', 'Ờ', 'Ở', 'Ỡ', 'Ợ', 'Ö', 'Ø', 'Ō', 'Ő', 'Ŏ', 'Ο', 'Ό', 'Ὀ', 'Ὁ', 'Ὂ', 'Ὃ', 'Ὄ', 'Ὅ', 'Ὸ', 'Ό', 'О', 'Θ', 'Ө'), 'P' => array('П', 'Π'), 'R' => array('Ř', 'Ŕ', 'Р', 'Ρ'), 'S' => array('Ş', 'Ŝ', 'Ș', 'Š', 'Ś', 'С', 'Σ'), 'T' => array('Ť', 'Ţ', 'Ŧ', 'Ț', 'Т', 'Τ'), 'U' => array('Ú', 'Ù', 'Ủ', 'Ũ', 'Ụ', 'Ư', 'Ứ', 'Ừ', 'Ử', 'Ữ', 'Ự', 'Û', 'Ü', 'Ū', 'Ů', 'Ű', 'Ŭ', 'Ų', 'У'), 'V' => array('В'), 'W' => array('Ω', 'Ώ'), 'X' => array('Χ'), 'Y' => array('Ý', 'Ỳ', 'Ỷ', 'Ỹ', 'Ỵ', 'Ÿ', 'Ῠ', 'Ῡ', 'Ὺ', 'Ύ', 'Ы', 'Й', 'Υ', 'Ϋ'), 'Z' => array('Ź', 'Ž', 'Ż', 'З', 'Ζ'), 'AE' => array('Æ'), 'CH' => array('Ч'), 'DJ' => array('Ђ'), 'DZ' => array('Џ'), 'KH' => array('Х'), 'LJ' => array('Љ'), 'NJ' => array('Њ'), 'PS' => array('Ψ'), 'SH' => array('Ш'), 'SHCH' => array('Щ'), 'SS' => array('ẞ'), 'TH' => array('Þ'), 'TS' => array('Ц'), 'YA' => array('Я'), 'YU' => array('Ю'), 'ZH' => array('Ж'), ' ' => array("\xC2\xA0", "\xE2\x80\x80", "\xE2\x80\x81", "\xE2\x80\x82", "\xE2\x80\x83", "\xE2\x80\x84", "\xE2\x80\x85", "\xE2\x80\x86", "\xE2\x80\x87", "\xE2\x80\x88", "\xE2\x80\x89", "\xE2\x80\x8A", "\xE2\x80\xAF", "\xE2\x81\x9F", "\xE3\x80\x80"), ); } /** * Pads the string to a given length with $padStr. If length is less than * or equal to the length of the string, no padding takes places. The * default string used for padding is a space, and the default type (one of * 'left', 'right', 'both') is 'right'. Throws an InvalidArgumentException * if $padType isn't one of those 3 values. * * @param int $length Desired string length after padding * @param string $padStr String used to pad, defaults to space * @param string $padType One of 'left', 'right', 'both' * @return Stringy Object with a padded $str * @throws InvalidArgumentException If $padType isn't one of 'right', * 'left' or 'both' */ public function pad($length, $padStr = ' ', $padType = 'right') { if (!in_array($padType, array('left', 'right', 'both'))) { throw new \InvalidArgumentException('Pad expects $padType ' . "to be one of 'left', 'right' or 'both'"); } switch ($padType) { case 'left': return $this->padLeft($length, $padStr); case 'right': return $this->padRight($length, $padStr); default: return $this->padBoth($length, $padStr); } } /** * Returns a new string of a given length such that the beginning of the * string is padded. Alias for pad() with a $padType of 'left'. * * @param int $length Desired string length after padding * @param string $padStr String used to pad, defaults to space * @return Stringy String with left padding */ public function padLeft($length, $padStr = ' ') { return $this->applyPadding($length - $this->length(), 0, $padStr); } /** * Returns a new string of a given length such that the end of the string * is padded. Alias for pad() with a $padType of 'right'. * * @param int $length Desired string length after padding * @param string $padStr String used to pad, defaults to space * @return Stringy String with right padding */ public function padRight($length, $padStr = ' ') { return $this->applyPadding(0, $length - $this->length(), $padStr); } /** * Returns a new string of a given length such that both sides of the * string are padded. Alias for pad() with a $padType of 'both'. * * @param int $length Desired string length after padding * @param string $padStr String used to pad, defaults to space * @return Stringy String with padding applied */ public function padBoth($length, $padStr = ' ') { $padding = $length - $this->length(); return $this->applyPadding(floor($padding / 2), ceil($padding / 2), $padStr); } /** * Adds the specified amount of left and right padding to the given string. * The default character used is a space. * * @param int $left Length of left padding * @param int $right Length of right padding * @param string $padStr String used to pad * @return Stringy String with padding applied */ private function applyPadding($left = 0, $right = 0, $padStr = ' ') { $stringy = static::create($this->str, $this->encoding); $length = mb_strlen($padStr, $stringy->encoding); $strLength = $stringy->length(); $paddedLength = $strLength + $left + $right; if (!$length || $paddedLength <= $strLength) { return $stringy; } $leftPadding = mb_substr(str_repeat($padStr, ceil($left / $length)), 0, $left, $stringy->encoding); $rightPadding = mb_substr(str_repeat($padStr, ceil($right / $length)), 0, $right, $stringy->encoding); $stringy->str = $leftPadding . $stringy->str . $rightPadding; return $stringy; } /** * Returns true if the string begins with $substring, false otherwise. By * default, the comparison is case-sensitive, but can be made insensitive * by setting $caseSensitive to false. * * @param string $substring The substring to look for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return bool Whether or not $str starts with $substring */ public function startsWith($substring, $caseSensitive = true) { $substringLength = mb_strlen($substring, $this->encoding); $startOfStr = mb_substr($this->str, 0, $substringLength, $this->encoding); if (!$caseSensitive) { $substring = mb_strtolower($substring, $this->encoding); $startOfStr = mb_strtolower($startOfStr, $this->encoding); } return (string) $substring === $startOfStr; } /** * Returns true if the string ends with $substring, false otherwise. By * default, the comparison is case-sensitive, but can be made insensitive * by setting $caseSensitive to false. * * @param string $substring The substring to look for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return bool Whether or not $str ends with $substring */ public function endsWith($substring, $caseSensitive = true) { $substringLength = mb_strlen($substring, $this->encoding); $strLength = $this->length(); $endOfStr = mb_substr($this->str, $strLength - $substringLength, $substringLength, $this->encoding); if (!$caseSensitive) { $substring = mb_strtolower($substring, $this->encoding); $endOfStr = mb_strtolower($endOfStr, $this->encoding); } return (string) $substring === $endOfStr; } /** * Converts each tab in the string to some number of spaces, as defined by * $tabLength. By default, each tab is converted to 4 consecutive spaces. * * @param int $tabLength Number of spaces to replace each tab with * @return Stringy Object whose $str has had tabs switched to spaces */ public function toSpaces($tabLength = 4) { $spaces = str_repeat(' ', $tabLength); $str = str_replace("\t", $spaces, $this->str); return static::create($str, $this->encoding); } /** * Converts each occurrence of some consecutive number of spaces, as * defined by $tabLength, to a tab. By default, each 4 consecutive spaces * are converted to a tab. * * @param int $tabLength Number of spaces to replace with a tab * @return Stringy Object whose $str has had spaces switched to tabs */ public function toTabs($tabLength = 4) { $spaces = str_repeat(' ', $tabLength); $str = str_replace($spaces, "\t", $this->str); return static::create($str, $this->encoding); } /** * Converts the first character of each word in the string to uppercase. * * @return Stringy Object with all characters of $str being title-cased */ public function toTitleCase() { $str = mb_convert_case($this->str, MB_CASE_TITLE, $this->encoding); return static::create($str, $this->encoding); } /** * Converts all characters in the string to lowercase. An alias for PHP's * mb_strtolower(). * * @return Stringy Object with all characters of $str being lowercase */ public function toLowerCase() { $str = mb_strtolower($this->str, $this->encoding); return static::create($str, $this->encoding); } /** * Converts all characters in the string to uppercase. An alias for PHP's * mb_strtoupper(). * * @return Stringy Object with all characters of $str being uppercase */ public function toUpperCase() { $str = mb_strtoupper($this->str, $this->encoding); return static::create($str, $this->encoding); } /** * Converts the string into an URL slug. This includes replacing non-ASCII * characters with their closest ASCII equivalents, removing remaining * non-ASCII and non-alphanumeric characters, and replacing whitespace with * $replacement. The replacement defaults to a single dash, and the string * is also converted to lowercase. * * @param string $replacement The string used to replace whitespace * @return Stringy Object whose $str has been converted to an URL slug */ public function slugify($replacement = '-') { $stringy = $this->toAscii(); $quotedReplacement = preg_quote($replacement); $pattern = "/[^a-zA-Z\d\s-_$quotedReplacement]/u"; $stringy->str = preg_replace($pattern, '', $stringy); return $stringy->toLowerCase()->delimit($replacement) ->removeLeft($replacement)->removeRight($replacement); } /** * Returns true if the string contains $needle, false otherwise. By default * the comparison is case-sensitive, but can be made insensitive by setting * $caseSensitive to false. * * @param string $needle Substring to look for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return bool Whether or not $str contains $needle */ public function contains($needle, $caseSensitive = true) { $encoding = $this->encoding; if ($caseSensitive) { return (mb_strpos($this->str, $needle, 0, $encoding) !== false); } else { return (mb_stripos($this->str, $needle, 0, $encoding) !== false); } } /** * Returns true if the string contains any $needles, false otherwise. By * default the comparison is case-sensitive, but can be made insensitive by * setting $caseSensitive to false. * * @param array $needles Substrings to look for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return bool Whether or not $str contains $needle */ public function containsAny($needles, $caseSensitive = true) { if (empty($needles)) { return false; } foreach ($needles as $needle) { if ($this->contains($needle, $caseSensitive)) { return true; } } return false; } /** * Returns true if the string contains all $needles, false otherwise. By * default the comparison is case-sensitive, but can be made insensitive by * setting $caseSensitive to false. * * @param array $needles Substrings to look for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return bool Whether or not $str contains $needle */ public function containsAll($needles, $caseSensitive = true) { if (empty($needles)) { return false; } foreach ($needles as $needle) { if (!$this->contains($needle, $caseSensitive)) { return false; } } return true; } /** * Returns the index of the first occurrence of $needle in the string, * and false if not found. Accepts an optional offset from which to begin * the search. * * @param string $needle Substring to look for * @param int $offset Offset from which to search * @return int|bool The occurrence's index if found, otherwise false */ public function indexOf($needle, $offset = 0) { return mb_strpos($this->str, (string) $needle, (int) $offset, $this->encoding); } /** * Returns the index of the last occurrence of $needle in the string, * and false if not found. Accepts an optional offset from which to begin * the search. * * @param string $needle Substring to look for * @param int $offset Offset from which to search * @return int|bool The last occurrence's index if found, otherwise false */ public function indexOfLast($needle, $offset = 0) { return mb_strrpos($this->str, (string) $needle, (int) $offset, $this->encoding); } /** * Surrounds $str with the given substring. * * @param string $substring The substring to add to both sides * @return Stringy Object whose $str had the substring both prepended and * appended */ public function surround($substring) { $str = implode('', array($substring, $this->str, $substring)); return static::create($str, $this->encoding); } /** * Inserts $substring into the string at the $index provided. * * @param string $substring String to be inserted * @param int $index The index at which to insert the substring * @return Stringy Object with the resulting $str after the insertion */ public function insert($substring, $index) { $stringy = static::create($this->str, $this->encoding); if ($index > $stringy->length()) { return $stringy; } $start = mb_substr($stringy->str, 0, $index, $stringy->encoding); $end = mb_substr($stringy->str, $index, $stringy->length(), $stringy->encoding); $stringy->str = $start . $substring . $end; return $stringy; } /** * Truncates the string to a given length. If $substring is provided, and * truncating occurs, the string is further truncated so that the substring * may be appended without exceeding the desired length. * * @param int $length Desired length of the truncated string * @param string $substring The substring to append if it can fit * @return Stringy Object with the resulting $str after truncating */ public function truncate($length, $substring = '') { $stringy = static::create($this->str, $this->encoding); if ($length >= $stringy->length()) { return $stringy; } // Need to further trim the string so we can append the substring $substringLength = mb_strlen($substring, $stringy->encoding); $length = $length - $substringLength; $truncated = mb_substr($stringy->str, 0, $length, $stringy->encoding); $stringy->str = $truncated . $substring; return $stringy; } /** * Truncates the string to a given length, while ensuring that it does not * split words. If $substring is provided, and truncating occurs, the * string is further truncated so that the substring may be appended without * exceeding the desired length. * * @param int $length Desired length of the truncated string * @param string $substring The substring to append if it can fit * @return Stringy Object with the resulting $str after truncating */ public function safeTruncate($length, $substring = '') { $stringy = static::create($this->str, $this->encoding); if ($length >= $stringy->length()) { return $stringy; } // Need to further trim the string so we can append the substring $encoding = $stringy->encoding; $substringLength = mb_strlen($substring, $encoding); $length = $length - $substringLength; $truncated = mb_substr($stringy->str, 0, $length, $encoding); // If the last word was truncated if (mb_strpos($stringy->str, ' ', $length - 1, $encoding) != $length) { // Find pos of the last occurrence of a space, get up to that $lastPos = mb_strrpos($truncated, ' ', 0, $encoding); $truncated = mb_substr($truncated, 0, $lastPos, $encoding); } $stringy->str = $truncated . $substring; return $stringy; } /** * Returns a reversed string. A multibyte version of strrev(). * * @return Stringy Object with a reversed $str */ public function reverse() { $strLength = $this->length(); $reversed = ''; // Loop from last index of string to first for ($i = $strLength - 1; $i >= 0; $i--) { $reversed .= mb_substr($this->str, $i, 1, $this->encoding); } return static::create($reversed, $this->encoding); } /** * A multibyte str_shuffle() function. It returns a string with its * characters in random order. * * @return Stringy Object with a shuffled $str */ public function shuffle() { $indexes = range(0, $this->length() - 1); shuffle($indexes); $shuffledStr = ''; foreach ($indexes as $i) { $shuffledStr .= mb_substr($this->str, $i, 1, $this->encoding); } return static::create($shuffledStr, $this->encoding); } /** * Returns a string with whitespace removed from the start and end of the * string. Supports the removal of unicode whitespace. Accepts an optional * string of characters to strip instead of the defaults. * * @param string $chars Optional string of characters to strip * @return Stringy Object with a trimmed $str */ public function trim($chars = null) { $chars = ($chars) ? preg_quote($chars) : '[:space:]'; return $this->regexReplace("^[$chars]+|[$chars]+\$", ''); } /** * Returns a string with whitespace removed from the start of the string. * Supports the removal of unicode whitespace. Accepts an optional * string of characters to strip instead of the defaults. * * @param string $chars Optional string of characters to strip * @return Stringy Object with a trimmed $str */ public function trimLeft($chars = null) { $chars = ($chars) ? preg_quote($chars) : '[:space:]'; return $this->regexReplace("^[$chars]+", ''); } /** * Returns a string with whitespace removed from the end of the string. * Supports the removal of unicode whitespace. Accepts an optional * string of characters to strip instead of the defaults. * * @param string $chars Optional string of characters to strip * @return Stringy Object with a trimmed $str */ public function trimRight($chars = null) { $chars = ($chars) ? preg_quote($chars) : '[:space:]'; return $this->regexReplace("[$chars]+\$", ''); } /** * Returns the longest common prefix between the string and $otherStr. * * @param string $otherStr Second string for comparison * @return Stringy Object with its $str being the longest common prefix */ public function longestCommonPrefix($otherStr) { $encoding = $this->encoding; $maxLength = min($this->length(), mb_strlen($otherStr, $encoding)); $longestCommonPrefix = ''; for ($i = 0; $i < $maxLength; $i++) { $char = mb_substr($this->str, $i, 1, $encoding); if ($char == mb_substr($otherStr, $i, 1, $encoding)) { $longestCommonPrefix .= $char; } else { break; } } return static::create($longestCommonPrefix, $encoding); } /** * Returns the longest common suffix between the string and $otherStr. * * @param string $otherStr Second string for comparison * @return Stringy Object with its $str being the longest common suffix */ public function longestCommonSuffix($otherStr) { $encoding = $this->encoding; $maxLength = min($this->length(), mb_strlen($otherStr, $encoding)); $longestCommonSuffix = ''; for ($i = 1; $i <= $maxLength; $i++) { $char = mb_substr($this->str, -$i, 1, $encoding); if ($char == mb_substr($otherStr, -$i, 1, $encoding)) { $longestCommonSuffix = $char . $longestCommonSuffix; } else { break; } } return static::create($longestCommonSuffix, $encoding); } /** * Returns the longest common substring between the string and $otherStr. * In the case of ties, it returns that which occurs first. * * @param string $otherStr Second string for comparison * @return Stringy Object with its $str being the longest common substring */ public function longestCommonSubstring($otherStr) { // Uses dynamic programming to solve // http://en.wikipedia.org/wiki/Longest_common_substring_problem $encoding = $this->encoding; $stringy = static::create($this->str, $encoding); $strLength = $stringy->length(); $otherLength = mb_strlen($otherStr, $encoding); // Return if either string is empty if ($strLength == 0 || $otherLength == 0) { $stringy->str = ''; return $stringy; } $len = 0; $end = 0; $table = array_fill(0, $strLength + 1, array_fill(0, $otherLength + 1, 0)); for ($i = 1; $i <= $strLength; $i++) { for ($j = 1; $j <= $otherLength; $j++) { $strChar = mb_substr($stringy->str, $i - 1, 1, $encoding); $otherChar = mb_substr($otherStr, $j - 1, 1, $encoding); if ($strChar == $otherChar) { $table[$i][$j] = $table[$i - 1][$j - 1] + 1; if ($table[$i][$j] > $len) { $len = $table[$i][$j]; $end = $i; } } else { $table[$i][$j] = 0; } } } $stringy->str = mb_substr($stringy->str, $end - $len, $len, $encoding); return $stringy; } /** * Returns the length of the string. An alias for PHP's mb_strlen() function. * * @return int The number of characters in $str given the encoding */ public function length() { return mb_strlen($this->str, $this->encoding); } /** * Returns the substring beginning at $start with the specified $length. * It differs from the mb_substr() function in that providing a $length of * null will return the rest of the string, rather than an empty string. * * @param int $start Position of the first character to use * @param int $length Maximum number of characters used * @return Stringy Object with its $str being the substring */ public function substr($start, $length = null) { $length = $length === null ? $this->length() : $length; $str = mb_substr($this->str, $start, $length, $this->encoding); return static::create($str, $this->encoding); } /** * Returns the character at $index, with indexes starting at 0. * * @param int $index Position of the character * @return Stringy The character at $index */ public function at($index) { return $this->substr($index, 1); } /** * Returns the first $n characters of the string. * * @param int $n Number of characters to retrieve from the start * @return Stringy Object with its $str being the first $n chars */ public function first($n) { $stringy = static::create($this->str, $this->encoding); if ($n < 0) { $stringy->str = ''; } else { return $stringy->substr(0, $n); } return $stringy; } /** * Returns the last $n characters of the string. * * @param int $n Number of characters to retrieve from the end * @return Stringy Object with its $str being the last $n chars */ public function last($n) { $stringy = static::create($this->str, $this->encoding); if ($n <= 0) { $stringy->str = ''; } else { return $stringy->substr(-$n); } return $stringy; } /** * Ensures that the string begins with $substring. If it doesn't, it's * prepended. * * @param string $substring The substring to add if not present * @return Stringy Object with its $str prefixed by the $substring */ public function ensureLeft($substring) { $stringy = static::create($this->str, $this->encoding); if (!$stringy->startsWith($substring)) { $stringy->str = $substring . $stringy->str; } return $stringy; } /** * Ensures that the string begins with $substring. If it doesn't, it's * appended. * * @param string $substring The substring to add if not present * @return Stringy Object with its $str suffixed by the $substring */ public function ensureRight($substring) { $stringy = static::create($this->str, $this->encoding); if (!$stringy->endsWith($substring)) { $stringy->str .= $substring; } return $stringy; } /** * Returns a new string with the prefix $substring removed, if present. * * @param string $substring The prefix to remove * @return Stringy Object having a $str without the prefix $substring */ public function removeLeft($substring) { $stringy = static::create($this->str, $this->encoding); if ($stringy->startsWith($substring)) { $substringLength = mb_strlen($substring, $stringy->encoding); return $stringy->substr($substringLength); } return $stringy; } /** * Returns a new string with the suffix $substring removed, if present. * * @param string $substring The suffix to remove * @return Stringy Object having a $str without the suffix $substring */ public function removeRight($substring) { $stringy = static::create($this->str, $this->encoding); if ($stringy->endsWith($substring)) { $substringLength = mb_strlen($substring, $stringy->encoding); return $stringy->substr(0, $stringy->length() - $substringLength); } return $stringy; } /** * Returns true if $str matches the supplied pattern, false otherwise. * * @param string $pattern Regex pattern to match against * @return bool Whether or not $str matches the pattern */ private function matchesPattern($pattern) { $regexEncoding = mb_regex_encoding(); mb_regex_encoding($this->encoding); $match = mb_ereg_match($pattern, $this->str); mb_regex_encoding($regexEncoding); return $match; } /** * Returns true if the string contains a lower case char, false * otherwise. * * @return bool Whether or not the string contains a lower case character. */ public function hasLowerCase() { return $this->matchesPattern('.*[[:lower:]]'); } /** * Returns true if the string contains an upper case char, false * otherwise. * * @return bool Whether or not the string contains an upper case character. */ public function hasUpperCase() { return $this->matchesPattern('.*[[:upper:]]'); } /** * Returns true if the string contains only alphabetic chars, false * otherwise. * * @return bool Whether or not $str contains only alphabetic chars */ public function isAlpha() { return $this->matchesPattern('^[[:alpha:]]*$'); } /** * Returns true if the string contains only alphabetic and numeric chars, * false otherwise. * * @return bool Whether or not $str contains only alphanumeric chars */ public function isAlphanumeric() { return $this->matchesPattern('^[[:alnum:]]*$'); } /** * Returns true if the string contains only hexadecimal chars, false * otherwise. * * @return bool Whether or not $str contains only hexadecimal chars */ public function isHexadecimal() { return $this->matchesPattern('^[[:xdigit:]]*$'); } /** * Returns true if the string contains only whitespace chars, false * otherwise. * * @return bool Whether or not $str contains only whitespace characters */ public function isBlank() { return $this->matchesPattern('^[[:space:]]*$'); } /** * Returns true if the string is JSON, false otherwise. * * @return bool Whether or not $str is JSON */ public function isJson() { json_decode($this->str); return (json_last_error() === JSON_ERROR_NONE); } /** * Returns true if the string contains only lower case chars, false * otherwise. * * @return bool Whether or not $str contains only lower case characters */ public function isLowerCase() { return $this->matchesPattern('^[[:lower:]]*$'); } /** * Returns true if the string contains only lower case chars, false * otherwise. * * @return bool Whether or not $str contains only lower case characters */ public function isUpperCase() { return $this->matchesPattern('^[[:upper:]]*$'); } /** * Returns true if the string is serialized, false otherwise. * * @return bool Whether or not $str is serialized */ public function isSerialized() { return $this->str === 'b:0;' || @unserialize($this->str) !== false; } /** * Returns the number of occurrences of $substring in the given string. * By default, the comparison is case-sensitive, but can be made insensitive * by setting $caseSensitive to false. * * @param string $substring The substring to search for * @param bool $caseSensitive Whether or not to enforce case-sensitivity * @return int The number of $substring occurrences */ public function countSubstr($substring, $caseSensitive = true) { if ($caseSensitive) { return mb_substr_count($this->str, $substring, $this->encoding); } $str = mb_strtoupper($this->str, $this->encoding); $substring = mb_strtoupper($substring, $this->encoding); return mb_substr_count($str, $substring, $this->encoding); } /** * Replaces all occurrences of $search in $str by $replacement. * * @param string $search The needle to search for * @param string $replacement The string to replace with * @return Stringy Object with the resulting $str after the replacements */ public function replace($search, $replacement) { return $this->regexReplace(preg_quote($search), $replacement); } /** * Replaces all occurrences of $pattern in $str by $replacement. An alias * for mb_ereg_replace(). Note that the 'i' option with multibyte patterns * in mb_ereg_replace() requires PHP 5.4+. This is due to a lack of support * in the bundled version of Oniguruma in PHP 5.3. * * @param string $pattern The regular expression pattern * @param string $replacement The string to replace with * @param string $options Matching conditions to be used * @return Stringy Object with the resulting $str after the replacements */ public function regexReplace($pattern, $replacement, $options = 'msr') { $regexEncoding = mb_regex_encoding(); mb_regex_encoding($this->encoding); $str = mb_ereg_replace($pattern, $replacement, $this->str, $options); mb_regex_encoding($regexEncoding); return static::create($str, $this->encoding); } /** * Convert all applicable characters to HTML entities. * * @param int|null $flags See http://php.net/manual/en/function.htmlentities.php * @return Stringy Object with the resulting $str after being html encoded. */ public function htmlEncode($flags = ENT_COMPAT) { $str = htmlentities($this->str, $flags, $this->encoding); return static::create($str, $this->encoding); } /** * Convert all HTML entities to their applicable characters. * * @param int|null $flags See http://php.net/manual/en/function.html-entity-decode.php * @return Stringy Object with the resulting $str after being html decoded. */ public function htmlDecode($flags = ENT_COMPAT) { $str = html_entity_decode($this->str, $flags, $this->encoding); return static::create($str, $this->encoding); } }