Yiisoft\Validator\Rule\HasLength

Complexity

Total Complexity

13

Size/Duplication

Total Lines	112
Duplicated Lines	0 %

Test Coverage

Coverage

90.91%

Importance

Changes

0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	validateValue()	0	19	6
A	encoding()	0	5	1
A	rule()	0	3	1
A	tooShortMessage()	0	5	1
A	min()	0	5	1
A	tooLongMessage()	0	5	1
A	max()	0	5	1
A	getOptions()	0	15	1

<?php

declare(strict_types=1);

namespace Yiisoft\Validator\Rule;

use Yiisoft\Validator\HasValidationErrorMessage;
use Yiisoft\Validator\Result;
use Yiisoft\Validator\Rule;
use Yiisoft\Validator\ValidationContext;

use function is_string;

/**
 * StringValidator validates that the attribute value is of certain length.
 *
 * Note, this validator should only be used with string-typed attributes.
 */
final class HasLength extends Rule
{
    use HasValidationErrorMessage;

    /**
     * @var int|null maximum length. null means no maximum length limit.
     *
     * @see tooLongMessage for the customized message for a too long string.
     */
    private ?int $max = null;
    /**
     * @var int|null minimum length. null means no minimum length limit.
     *
     * @see tooShortMessage for the customized message for a too short string.
     */
    private ?int $min = null;
    /**
     * @var string user-defined error message used when the value is not a string.
     */
    private string $message = 'This value must be a string.';
    /**
     * @var string user-defined error message used when the length of the value is smaller than {@see $min}.
     */
    private string $tooShortMessage = 'This value should contain at least {min} characters or more, currently has ' .
        '{length} characters.';
    /**
     * @var string user-defined error message used when the length of the value is greater than {@see $max}.
     */
    private string $tooLongMessage = 'This value must contain at most {max} characters or less, currently has ' .
        '{length} characters.';
    /**
     * @var string the encoding of the string value to be validated (e.g. 'UTF-8').
     * If this property is not set, application wide encoding will be used.
     */
    protected string $encoding = 'UTF-8';

    public static function rule(): self
    {
        return new self();
    }

    protected function validateValue($value, ValidationContext $context = null): Result
    {
        $result = new Result();

        if (!is_string($value)) {
            $result->addError($this->formatMessage($this->message));
            return $result;
        }

        $length = mb_strlen($value, $this->encoding);

        if ($this->min !== null && $length < $this->min) {
            $result->addError($this->formatMessage($this->tooShortMessage, ['min' => $this->min, 'length' => $length]));
        }
        if ($this->max !== null && $length > $this->max) {
            $result->addError($this->formatMessage($this->tooLongMessage, ['max' => $this->max, 'length' => $length]));
        }

        return $result;
    }

    public function min(int $value): self
    {
        $new = clone $this;
        $new->min = $value;
        return $new;
    }

    public function max(int $value): self
    {
        $new = clone $this;
        $new->max = $value;
        return $new;
    }

    public function encoding(string $encoding): self
    {
        $new = clone $this;
        $new->encoding = $encoding;
        return $new;
    }

    public function tooShortMessage(string $message): self
    {
        $new = clone $this;
        $new->tooShortMessage = $message;
        return $new;
    }

    public function tooLongMessage(string $message): self
    {
        $new = clone $this;
        $new->tooLongMessage = $message;
        return $new;
    }

    public function getOptions(): array
    {
        return array_merge(
            parent::getOptions(),
            [
                'message' => $this->formatMessage($this->message),
                'min' => $this->min,
                'tooShortMessage' => $this->formatMessage(
                    $this->tooShortMessage, ['min' => $this->min, 'length' => strlen($this->message)]
                ),
                'max' => $this->max,
                'tooLongMessage' => $this->formatMessage(
                    $this->tooLongMessage, ['max' => $this->max, 'length' => strlen($this->message)]
                ),
                'encoding' => $this->encoding,
            ],
        );
    }
}