86 lines
1.8 KiB
PHP
86 lines
1.8 KiB
PHP
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<?php
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/*
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* This file is part of Respect/Validation.
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*
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* (c) Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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*
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* For the full copyright and license information, please view the LICENSE file
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* that was distributed with this source code.
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*/
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declare(strict_types=1);
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namespace Respect\Validation\Rules;
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use function is_array;
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use function mb_detect_encoding;
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use function mb_stripos;
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use function mb_strpos;
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use function reset;
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/**
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* Validates whether the input starts with a given value.
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*
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* @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Marcelo Araujo <msaraujo@php.net>
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*/
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final class StartsWith extends AbstractRule
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{
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/**
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* @var mixed
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*/
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private $startValue;
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/**
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* @var bool
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*/
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private $identical;
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/**
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* @param mixed $startValue
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*/
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public function __construct($startValue, bool $identical = false)
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{
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$this->startValue = $startValue;
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$this->identical = $identical;
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}
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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if ($this->identical) {
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return $this->validateIdentical($input);
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}
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return $this->validateEquals($input);
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}
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/**
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* @param mixed $input
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*/
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protected function validateEquals($input): bool
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{
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if (is_array($input)) {
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return reset($input) == $this->startValue;
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}
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return mb_stripos($input, $this->startValue, 0, (string) mb_detect_encoding($input)) === 0;
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}
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/**
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* @param mixed $input
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*/
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protected function validateIdentical($input): bool
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{
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if (is_array($input)) {
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return reset($input) === $this->startValue;
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}
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return mb_strpos($input, $this->startValue, 0, (string) mb_detect_encoding($input)) === 0;
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}
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}
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