<?php
/**
 * Orange Management
 *
 * PHP Version 7.0
 *
 * @category   TBD
 * @package    TBD
 * @author     OMS Development Team <dev@oms.com>
 * @author     Dennis Eichhorn <d.eichhorn@oms.com>
 * @copyright  2013 Dennis Eichhorn
 * @license    OMS License 1.0
 * @version    1.0.0
 * @link       http://orange-management.com
 */
namespace phpOMS\Utils;

/**
 * String utils.
 *
 * @category   Framework
 * @package    Utils
 * @author     OMS Development Team <dev@oms.com>
 * @author     Dennis Eichhorn <d.eichhorn@oms.com>
 * @license    OMS License 1.0
 * @link       http://orange-management.com
 * @since      1.0.0
 */
class StringUtils
{

    /**
     * Constructor.
     *
     * @since  1.0.0
     * @author Dennis Eichhorn <d.eichhorn@oms.com>
     */
    private function __construct()
    {
    }

    /**
     * String ends with?
     *
     * @param \string $haystack Haystack
     * @param \string $needle   Needle
     *
     * @return \bool
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function endsWith(\string $haystack, \string $needle) : \bool
    {
        return $needle === '' || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== false);
    }

    /**
     * String starts with?
     *
     * @param \string $haystack Haystack
     * @param \string $needle   Needle
     *
     * @return \bool
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function startsWith(\string $haystack, \string $needle) : \bool
    {
        return $needle === '' || strrpos($haystack, $needle, -strlen($haystack)) !== false;
    }

    /**
     * String starts with?
     *
     * @param \string $haystack Haystack
     * @param \string $needle   Needle
     *
     * @return \bool
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_startsWith(\string $haystack, \string $needle) : \bool
    {
        return $needle === '' || mb_strrpos($haystack, $needle, -mb_strlen($haystack)) !== false;
    }

    /**
     * String ends with?
     *
     * @param \string $haystack Haystack
     * @param \string $needle   Needle
     *
     * @return \bool
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_endsWith(\string $haystack, \string $needle) : \bool
    {
        return $needle === '' || (($temp = mb_strlen($haystack) - mb_strlen($needle)) >= 0 && mb_strpos($haystack, $needle, $temp) !== false);
    }

    /**
     * Uppercase first letter.
     *
     * @param \string $string String to manipulate
     *
     * @return \string
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_ucfirst(\string $string) : \string
    {
        $strlen    = mb_strlen($string);
        $firstChar = mb_substr($string, 0, 1);
        $then      = mb_substr($string, 1, $strlen - 1);

        return mb_strtoupper($firstChar) . $then;
    }

    /**
     * Lowercase first letter.
     *
     * @param \string $string String to manipulate
     *
     * @return \string
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_lcfirst(\string $string) : \string
    {
        $strlen    = mb_strlen($string);
        $firstChar = mb_substr($string, 0, 1);
        $then      = mb_substr($string, 1, $strlen - 1);

        return mb_strtolower($firstChar) . $then;
    }

    /**
     * Trim string.
     *
     * @param \string $string   String to manipulate
     * @param \string $charlist String to trim
     *
     * @return \string
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_trim(\string $string, \string $charlist = ' ') : \string
    {
        if (is_null($charlist)) {
            return trim($string);
        } else {
            $charlist = str_replace('/', '\/', preg_quote($charlist));

            return preg_replace('/(^[' . $charlist . ']+)|([ ' . $charlist . ']+$)/us', '', $string);
        }
    }

    /**
     * Trim right part of string.
     *
     * @param \string $string   String to manipulate
     * @param \string $charlist String to trim
     *
     * @return \string
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_rtrim(\string $string, \string $charlist = ' ') : \string
    {
        if ($charlist === ' ') {
            return rtrim($string);
        } else {
            $charlist = str_replace('/', '\/', preg_quote($charlist));

            return preg_replace('/([' . $charlist . ']+$)/us', '', $string);
        }
    }

    /**
     * Trim left part of string.
     *
     * @param \string $string   String to manipulate
     * @param \string $charlist String to trim
     *
     * @return \string
     *
     * @since  1.0.0
     * @author Dennis Eichhorn
     */
    public static function mb_ltrim(\string $string, \string $charlist = ' ') : \string
    {
        if ($charlist === ' ') {
            return ltrim($string);
        } else {
            $charlist = str_replace('/', '\/', preg_quote($charlist));

            return preg_replace('/(^[' . $charlist . ']+)/us', '', $string);
        }
    }
}