136 lines
3.1 KiB
PHP
136 lines
3.1 KiB
PHP
<?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 Countable as CountableInterface;
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use Respect\Validation\Exceptions\ComponentException;
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use function count;
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use function get_object_vars;
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use function is_array;
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use function is_int;
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use function is_object;
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use function is_string;
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use function mb_detect_encoding;
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use function mb_strlen;
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use function sprintf;
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/**
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* Validates the length of the given input.
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*
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* @author Alexandre Gomes Gaigalas <alexandre@gaigalas.net>
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* @author Blake Hair <blake.hair@gmail.com>
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* @author Danilo Correa <danilosilva87@gmail.com>
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* @author Henrique Moody <henriquemoody@gmail.com>
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* @author Hugo Hamon <hugo.hamon@sensiolabs.com>
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* @author João Torquato <joao.otl@gmail.com>
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* @author Marcelo Araujo <msaraujo@php.net>
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*/
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final class Length extends AbstractRule
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{
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/**
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* @var int|null
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*/
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private $minValue;
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/**
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* @var int|null
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*/
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private $maxValue;
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/**
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* @var bool
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*/
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private $inclusive;
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/**
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* Creates the rule with a minimum and maximum value.
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*
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* @throws ComponentException
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*/
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public function __construct(?int $min = null, ?int $max = null, bool $inclusive = true)
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{
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$this->minValue = $min;
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$this->maxValue = $max;
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$this->inclusive = $inclusive;
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if ($max !== null && $min > $max) {
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throw new ComponentException(sprintf('%d cannot be less than %d for validation', $min, $max));
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}
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}
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/**
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* {@inheritDoc}
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*/
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public function validate($input): bool
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{
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$length = $this->extractLength($input);
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if ($length === null) {
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return false;
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}
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return $this->validateMin($length) && $this->validateMax($length);
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}
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/**
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* @param mixed $input
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*/
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private function extractLength($input): ?int
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{
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if (is_string($input)) {
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return (int) mb_strlen($input, (string) mb_detect_encoding($input));
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}
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if (is_array($input) || $input instanceof CountableInterface) {
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return count($input);
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}
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if (is_object($input)) {
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return $this->extractLength(get_object_vars($input));
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}
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if (is_int($input)) {
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return $this->extractLength((string) $input);
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}
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return null;
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}
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private function validateMin(int $length): bool
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{
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if ($this->minValue === null) {
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return true;
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}
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if ($this->inclusive) {
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return $length >= $this->minValue;
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}
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return $length > $this->minValue;
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}
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private function validateMax(int $length): bool
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{
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if ($this->maxValue === null) {
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return true;
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}
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if ($this->inclusive) {
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return $length <= $this->maxValue;
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}
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return $length < $this->maxValue;
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}
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}
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