Subreality\Dilmun\Anshar\Utils\StringHelper

Complexity

Total Complexity

4

Size/Duplication

Total Lines	50
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	0

Test Coverage

Coverage

100%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	8	2
A	affectChunks()	0	20	2

<?php
namespace Subreality\Dilmun\Anshar\Utils;

class StringHelper
{
    protected $string;

    /**
     * StringHelper constructor. Accepts and stores a string.
     *
     * @throws \InvalidArgumentException if not initialized with a string
     *
     * @param string $string    The string needing help
     */
    public function __construct($string)
    {
        if (!is_string($string)) {
            throw new \InvalidArgumentException("Supplied string is not a string");
        }

        $this->string = $string;
    }

    /**
     * Given a delimited string, returns a copy of the string with chunks defined by the delimiter affected by a given
     * function.
     *
     * @param callable $function    The function to be called against the delimited chunks
     * @param string[] $delimiters  One or more strings delimiting the chunks

Should the type for parameter $delimiters not be string[][]?

     *
     * @return string               A delimited string with chunks affected by the supplied function
     */
    public function affectChunks(callable $function, ...$delimiters)
    {
        $delimiter_string = "";
        $replace_callback = function ($matches) use ($function) {

            $callback_string = $function($matches[0]);

            return $callback_string;
        };

        foreach ($delimiters as $delimiter) {
            $delimiter_string .= preg_quote($delimiter, "/");
        }

        $pattern = "/[^{$delimiter_string}]+/";

        $affected_string = preg_replace_callback($pattern, $replace_callback, $this->string);

        return $affected_string;
    }
}