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<?php
namespace WP_Forge\Helpers;
/**
* Class Str
*
* @package WP_Forge\Helpers
*/
class Str {
/**
* The cache of snake-cased words.
*
* @var array
*/
protected static $snakeCache = [];
/**
* The cache of camel-cased words.
*
* @var array
*/
protected static $camelCache = [];
/**
* The cache of studly-cased words.
*
* @var array
*/
protected static $studlyCache = [];
/**
* Return the remainder of a string after the first occurrence of a given value.
*
* @param string $subject
* @param string $search
*
* @return string
*/
public static function after( $subject, $search ) {
return $search === '' ? $subject : array_reverse( explode( $search, $subject, 2 ) )[0];
}
/**
* Return the remainder of a string after the last occurrence of a given value.
*
* @param string $subject
* @param string $search
*
* @return string
*/
public static function afterLast( $subject, $search ) {
if ( $search === '' ) {
return $subject;
}
$position = strrpos( $subject, (string) $search );
if ( $position === false ) {
return $subject;
}
return substr( $subject, $position + strlen( $search ) );
}
/**
* Get the portion of a string before the first occurrence of a given value.
*
* @param string $subject
* @param string $search
*
* @return string
*/
public static function before( $subject, $search ) {
return $search === '' ? $subject : explode( $search, $subject )[0];
}
/**
* Get the portion of a string before the last occurrence of a given value.
*
* @param string $subject
* @param string $search
*
* @return string
*/
public static function beforeLast( $subject, $search ) {
if ( $search === '' ) {
return $subject;
}
$pos = mb_strrpos( $subject, $search );
if ( $pos === false ) {
return $subject;
}
return static::substr( $subject, 0, $pos );
}
/**
* Get the portion of a string between two given values.
*
* @param string $subject
* @param string $from
* @param string $to
*
* @return string
*/
public static function between( $subject, $from, $to ) {
if ( $from === '' || $to === '' ) {
return $subject;
}
return static::beforeLast( static::after( $subject, $from ), $to );
}
/**
* Convert a value to camel case.
*
* @param string $value
*
* @return string
*/
public static function camel( $value ) {
if ( isset( static::$camelCache[ $value ] ) ) {
return static::$camelCache[ $value ];
}
return static::$camelCache[ $value ] = lcfirst( static::studly( $value ) );
}
/**
* Determine if a given string contains a given substring.
*
* @param string $haystack
* @param string|string[] $needles
*
* @return bool
*/
public static function contains( $haystack, $needles ) {
foreach ( (array) $needles as $needle ) {
if ( $needle !== '' && mb_strpos( $haystack, $needle ) !== false ) {
return true;
}
}
return false;
}
/**
* Determine if a given string contains all array values.
*
* @param string $haystack
* @param string[] $needles
*
* @return bool
*/
public static function containsAll( $haystack, array $needles ) {
foreach ( $needles as $needle ) {
if ( ! static::contains( $haystack, $needle ) ) {
return false;
}
}
return true;
}
/**
* Determine if a given string ends with a given substring.
*
* @param string $haystack
* @param string|string[] $needles
*
* @return bool
*/
public static function endsWith( $haystack, $needles ) {
foreach ( (array) $needles as $needle ) {
if ( substr( $haystack, - strlen( $needle ) ) === (string) $needle ) {
return true;
}
}
return false;
}
/**
* Cap a string with a single instance of a given value.
*
* @param string $value
* @param string $cap
*
* @return string
*/
public static function finish( $value, $cap ) {
$quoted = preg_quote( $cap, '/' );
return preg_replace( '/(?:' . $quoted . ')+$/u', '', $value ) . $cap;
}
/**
* Determine if a given string matches a given pattern.
*
* @param string|array $pattern
* @param string $value
*
* @return bool
*/
public static function is( $pattern, $value ) {
$patterns = Arr::wrap( $pattern );
if ( empty( $patterns ) ) {
return false;
}
foreach ( $patterns as $pattern ) {
// If the given value is an exact match we can of course return true right
// from the beginning. Otherwise, we will translate asterisks and do an
// actual pattern match against the two strings to see if they match.
if ( $pattern == $value ) {
return true;
}
$pattern = preg_quote( $pattern, '#' );
// Asterisks are translated into zero-or-more regular expression wildcards
// to make it convenient to check if the strings starts with the given
// pattern such as "library/*", making any string check convenient.
$pattern = str_replace( '\*', '.*', $pattern );
if ( preg_match( '#^' . $pattern . '\z#u', $value ) === 1 ) {
return true;
}
}
return false;
}
/**
* Convert a string to kebab case.
*
* @param string $value
*
* @return string
*/
public static function kebab( $value ) {
return static::snake( $value, '-' );
}
/**
* Return the length of the given string.
*
* @param string $value
* @param string|null $encoding
*
* @return int
*/
public static function length( $value, $encoding = null ) {
if ( $encoding ) {
return mb_strlen( $value, $encoding );
}
return mb_strlen( $value );
}
/**
* Limit the number of characters in a string.
*
* @param string $value
* @param int $limit
* @param string $end
*
* @return string
*/
public static function limit( $value, $limit = 100, $end = '...' ) {
if ( mb_strwidth( $value, 'UTF-8' ) <= $limit ) {
return $value;
}
return rtrim( mb_strimwidth( $value, 0, $limit, '', 'UTF-8' ) ) . $end;
}
/**
* Convert the given string to lower-case.
*
* @param string $value
*
* @return string
*/
public static function lower( $value ) {
return mb_strtolower( $value, 'UTF-8' );
}
/**
* Limit the number of words in a string.
*
* @param string $value
* @param int $words
* @param string $end
*
* @return string
*/
public static function words( $value, $words = 100, $end = '...' ) {
preg_match( '/^\s*+(?:\S++\s*+){1,' . $words . '}/u', $value, $matches );
if ( ! isset( $matches[0] ) || static::length( $value ) === static::length( $matches[0] ) ) {
return $value;
}
return rtrim( $matches[0] ) . $end;
}
/**
* Parse a Class[@]method style callback into class and method.
*
* @param string $callback
* @param string|null $default
*
* @return array<int, string|null>
*/
public static function parseCallback( $callback, $default = null ) {
return static::contains( $callback, '@' ) ? explode( '@', $callback, 2 ) : [ $callback, $default ];
}
/**
* Get the plural form of an English word.
*
* @param string $value
* @param int $count
*
* @return string
*/
public static function plural( $value, $count = 2 ) {
return Pluralizer::plural( $value, $count );
}
/**
* Pluralize the last word of an English, studly caps case string.
*
* @param string $value
* @param int $count
*
* @return string
*/
public static function pluralStudly( $value, $count = 2 ) {
$parts = preg_split( '/(.)(?=[A-Z])/u', $value, - 1, PREG_SPLIT_DELIM_CAPTURE );
$lastWord = array_pop( $parts );
return implode( '', $parts ) . self::plural( $lastWord, $count );
}
/**
* Generate a more truly "random" alpha-numeric string.
*
* @param int $length
*
* @return string
* @throws \Exception if it was not possible to gather sufficient entropy.
*/
public static function random( $length = 16 ) {
$string = '';
while ( ( $len = strlen( $string ) ) < $length ) {
$size = $length - $len;
$bytes = random_bytes( $size );
$string .= substr( str_replace( [ '/', '+', '=' ], '', base64_encode( $bytes ) ), 0, $size );
}
return $string;
}
/**
* Replace a given value in the string sequentially with an array.
*
* @param string $search
* @param array<int|string, string> $replace
* @param string $subject
*
* @return string
*/
public static function replaceArray( $search, array $replace, $subject ) {
$segments = explode( $search, $subject );
$result = array_shift( $segments );
foreach ( $segments as $segment ) {
$result .= ( array_shift( $replace ) ?? $search ) . $segment;
}
return $result;
}
/**
* Replace the first occurrence of a given value in the string.
*
* @param string $search
* @param string $replace
* @param string $subject
*
* @return string
*/
public static function replaceFirst( $search, $replace, $subject ) {
if ( $search == '' ) {
return $subject;
}
$position = strpos( $subject, $search );
if ( $position !== false ) {
return substr_replace( $subject, $replace, $position, strlen( $search ) );
}
return $subject;
}
/**
* Replace the last occurrence of a given value in the string.
*
* @param string $search
* @param string $replace
* @param string $subject
*
* @return string
*/
public static function replaceLast( $search, $replace, $subject ) {
$position = strrpos( $subject, $search );
if ( $position !== false ) {
return substr_replace( $subject, $replace, $position, strlen( $search ) );
}
return $subject;
}
/**
* Begin a string with a single instance of a given value.
*
* @param string $value
* @param string $prefix
*
* @return string
*/
public static function start( $value, $prefix ) {
$quoted = preg_quote( $prefix, '/' );
return $prefix . preg_replace( '/^(?:' . $quoted . ')+/u', '', $value );
}
/**
* Convert the given string to upper-case.
*
* @param string $value
*
* @return string
*/
public static function upper( $value ) {
return mb_strtoupper( $value, 'UTF-8' );
}
/**
* Convert the given string to title case.
*
* @param string $value
*
* @return string
*/
public static function title( $value ) {
return mb_convert_case( $value, MB_CASE_TITLE, 'UTF-8' );
}
/**
* Get the singular form of an English word.
*
* @param string $value
*
* @return string
*/
public static function singular( $value ) {
return Pluralizer::singular( $value );
}
/**
* Convert a string to snake case.
*
* @param string $value
* @param string $delimiter
*
* @return string
*/
public static function snake( $value, $delimiter = '_' ) {
$key = $value;
if ( isset( static::$snakeCache[ $key ][ $delimiter ] ) ) {
return static::$snakeCache[ $key ][ $delimiter ];
}
if ( ! ctype_lower( $value ) ) {
$value = preg_replace( '/\s+/u', '', ucwords( $value ) );
$value = static::lower( preg_replace( '/(.)(?=[A-Z])/u', '$1' . $delimiter, $value ) );
}
return static::$snakeCache[ $key ][ $delimiter ] = $value;
}
/**
* Determine if a given string starts with a given substring.
*
* @param string $haystack
* @param string|string[] $needles
*
* @return bool
*/
public static function startsWith( $haystack, $needles ) {
foreach ( (array) $needles as $needle ) {
if ( (string) $needle !== '' && substr( $haystack, 0, strlen( $needle ) ) === (string) $needle ) {
return true;
}
}
return false;
}
/**
* Convert a value to studly caps case.
*
* @param string $value
*
* @return string
*/
public static function studly( $value ) {
$key = $value;
if ( isset( static::$studlyCache[ $key ] ) ) {
return static::$studlyCache[ $key ];
}
$value = ucwords( str_replace( [ '-', '_' ], ' ', $value ) );
return static::$studlyCache[ $key ] = str_replace( ' ', '', $value );
}
/**
* Returns the portion of string specified by the start and length parameters.
*
* @param string $string
* @param int $start
* @param int|null $length
*
* @return string
*/
public static function substr( $string, $start, $length = null ) {
return mb_substr( $string, $start, $length, 'UTF-8' );
}
/**
* Make a string's first character uppercase.
*
* @param string $string
*
* @return string
*/
public static function ucfirst( $string ) {
return static::upper( static::substr( $string, 0, 1 ) ) . static::substr( $string, 1 );
}
}