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<?php |
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namespace Subreality\Dilmun\Anshar\Utils; |
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class StringHelper |
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{ |
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protected $string; |
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/** |
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* StringHelper constructor. Accepts and stores a string. |
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* |
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* @throws \InvalidArgumentException if not initialized with a string |
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* |
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* @param string $string The string needing help |
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*/ |
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public function __construct($string) |
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{ |
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if (!is_string($string)) { |
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throw new \InvalidArgumentException("Supplied string is not a string"); |
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} |
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$this->string = $string; |
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} |
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/** |
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* Given a delimited string, returns a copy of the string with chunks defined by the delimiter affected by a given |
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* function. |
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* |
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* The supplied function must be callable and must accept a string as its only required parameter |
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* |
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* @param callable $function The function to be called against the delimited chunks; must be callable and must |
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* accept a string as its only parameter |
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* @param string[] $delimiters One or more strings delimiting the chunks |
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* |
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* @return string A delimited string with chunks affected by the supplied function |
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*/ |
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public function affectChunks(callable $function, ...$delimiters) |
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{ |
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$delimiter_string = ""; |
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$replace_callback = function ($matches) use ($function) { |
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$callback_string = $function($matches[0]); |
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return $callback_string; |
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}; |
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foreach ($delimiters as $delimiter) { |
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$delimiter_string .= preg_quote($delimiter, "/"); |
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} |
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$pattern = "/[^{$delimiter_string}]+/"; |
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$affected_string = preg_replace_callback($pattern, $replace_callback, $this->string); |
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return $affected_string; |
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} |
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/** |
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* Determines whether the string starts with a given string. |
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* |
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* @param string $string A string the string may or may not start with |
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* |
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* @return bool Returns true if the string starts with the given string |
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* Returns false if the string does not start with the given string |
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*/ |
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public function startsWith($string) |
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{ |
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$pattern = "/^" . preg_quote($string, "/") . "/"; |
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$starts_with_string = preg_match($pattern, $this->string); |
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return (bool) $starts_with_string; |
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} |
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/** |
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* Given a string, collapses any repetition at the start of the string into a single instance of the given string. |
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* |
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* For example, if the StringHelper was constructed with "ffoo", StringHelper::collapseStartingRepetition("f") will |
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* return "foo". |
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* |
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* @param string $string A string the string may or may not start with, with or without repetition |
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* |
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* @return bool|string Returns a potentially modified string with a repeating, starting string collapsed into |
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* a single instance of the string |
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* Returns false if the string does not start with any quantity of the given string |
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*/ |
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public function collapseStartingRepetition($string) |
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{ |
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$matches = array(); |
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$pattern = "/^[" . preg_quote($string, "/") . "]+(?P<remainder>.*)/"; |
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$starts_with_string = preg_match($pattern, $this->string, $matches); |
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if ($starts_with_string) { |
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$collapsed_string = $string . $matches["remainder"]; |
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return $collapsed_string; |
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} else { |
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return false; |
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} |
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} |
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} |
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twistofreality /
dilmun
Loading history...
This check looks for
@paramannotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.