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File / Folder	Size	Action
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ArrayHash.php	1.894KB	edt ren
ArrayList.php	2.645KB	edt ren
Arrays.php	13.781KB	edt ren
Callback.php	3.64KB	edt ren
DateTime.php	4.765KB	edt ren
FileInfo.php	1.3KB	edt ren
FileSystem.php	9.793KB	edt ren
Finder.php	13.421KB	edt ren
Floats.php	2.118KB	edt ren
Helpers.php	2.98KB	edt ren
Html.php	19.341KB	edt ren
Image.php	23.771KB	edt ren
ImageColor.php	1.654KB	edt ren
ImageType.php	0.497KB	edt ren
Iterables.php	6.234KB	edt ren
Json.php	2.535KB	edt ren
ObjectHelpers.php	7.074KB	edt ren
Paginator.php	4.384KB	edt ren
Random.php	1.246KB	edt ren
Reflection.php	8.691KB	edt ren
ReflectionMethod.php	0.84KB	edt ren
Strings.php	21.582KB	edt ren
Type.php	7.389KB	edt ren
Validators.php	10.678KB	edt ren
exceptions.php	0.742KB	edt ren

<?php

/**
 * This file is part of the Nette Framework (https://nette.org)
 * Copyright (c) 2004 David Grudl (https://davidgrudl.com)
 */

declare(strict_types=1);

namespace Nette\Utils;

use Nette;
use function array_key_exists, class_exists, explode, gettype, interface_exists, is_callable, is_float, is_int, is_iterable, is_numeric, is_object, is_string, preg_match, str_ends_with, str_replace, str_starts_with, strlen, strtolower, substr, trait_exists, var_export;

/**
 * Validation utilities.
 */
class Validators
{
	use Nette\StaticClass;

private const BuiltinTypes = [
		'string' => 1, 'int' => 1, 'float' => 1, 'bool' => 1, 'array' => 1, 'object' => 1,
		'callable' => 1, 'iterable' => 1, 'void' => 1, 'null' => 1, 'mixed' => 1, 'false' => 1,
		'never' => 1, 'true' => 1,
	];

/** @var array<string,?callable> */
	protected static $validators = [
		// PHP types
		'array' => 'is_array',
		'bool' => 'is_bool',
		'boolean' => 'is_bool',
		'float' => 'is_float',
		'int' => 'is_int',
		'integer' => 'is_int',
		'null' => 'is_null',
		'object' => 'is_object',
		'resource' => 'is_resource',
		'scalar' => 'is_scalar',
		'string' => 'is_string',

// pseudo-types
		'callable' => [self::class, 'isCallable'],
		'iterable' => 'is_iterable',
		'list' => [Arrays::class, 'isList'],
		'mixed' => [self::class, 'isMixed'],
		'none' => [self::class, 'isNone'],
		'number' => [self::class, 'isNumber'],
		'numeric' => [self::class, 'isNumeric'],
		'numericint' => [self::class, 'isNumericInt'],

// string patterns
		'alnum' => 'ctype_alnum',
		'alpha' => 'ctype_alpha',
		'digit' => 'ctype_digit',
		'lower' => 'ctype_lower',
		'pattern' => null,
		'space' => 'ctype_space',
		'unicode' => [self::class, 'isUnicode'],
		'upper' => 'ctype_upper',
		'xdigit' => 'ctype_xdigit',

// syntax validation
		'email' => [self::class, 'isEmail'],
		'identifier' => [self::class, 'isPhpIdentifier'],
		'uri' => [self::class, 'isUri'],
		'url' => [self::class, 'isUrl'],

// environment validation
		'class' => 'class_exists',
		'interface' => 'interface_exists',
		'directory' => 'is_dir',
		'file' => 'is_file',
		'type' => [self::class, 'isType'],
	];

/** @var array<string,callable> */
	protected static $counters = [
		'string' => 'strlen',
		'unicode' => [Strings::class, 'length'],
		'array' => 'count',
		'list' => 'count',
		'alnum' => 'strlen',
		'alpha' => 'strlen',
		'digit' => 'strlen',
		'lower' => 'strlen',
		'space' => 'strlen',
		'upper' => 'strlen',
		'xdigit' => 'strlen',
	];

/**
	 * Verifies that the value is of expected types separated by pipe.
	 * @throws AssertionException
	 */
	public static function assert(mixed $value, string $expected, string $label = 'variable'): void
	{
		if (!static::is($value, $expected)) {
			$expected = str_replace(['|', ':'], [' or ', ' in range '], $expected);
			$translate = ['boolean' => 'bool', 'integer' => 'int', 'double' => 'float', 'NULL' => 'null'];
			$type = $translate[gettype($value)] ?? gettype($value);
			if (is_int($value) || is_float($value) || (is_string($value) && strlen($value) < 40)) {
				$type .= ' ' . var_export($value, return: true);
			} elseif (is_object($value)) {
				$type .= ' ' . $value::class;
			}

throw new AssertionException("The $label expects to be $expected, $type given.");
		}
	}

/**
	 * Verifies that element $key in array is of expected types separated by pipe.
	 * @param  mixed[]  $array
	 * @throws AssertionException
	 */
	public static function assertField(
		array $array,
		$key,
		?string $expected = null,
		string $label = "item '%' in array",
	): void
	{
		if (!array_key_exists($key, $array)) {
			throw new AssertionException('Missing ' . str_replace('%', $key, $label) . '.');

} elseif ($expected) {
			static::assert($array[$key], $expected, str_replace('%', $key, $label));
		}
	}

/**
	 * Verifies that the value is of expected types separated by pipe.
	 */
	public static function is(mixed $value, string $expected): bool
	{
		foreach (explode('|', $expected) as $item) {
			if (str_ends_with($item, '[]')) {
				if (is_iterable($value) && self::everyIs($value, substr($item, 0, -2))) {
					return true;
				}

continue;
			} elseif (str_starts_with($item, '?')) {
				$item = substr($item, 1);
				if ($value === null) {
					return true;
				}
			}

[$type] = $item = explode(':', $item, 2);
			if (isset(static::$validators[$type])) {
				try {
					if (!static::$validators[$type]($value)) {
						continue;
					}
				} catch (\TypeError $e) {
					continue;
				}
			} elseif ($type === 'pattern') {
				if (Strings::match($value, '|^' . ($item[1] ?? '') . '$|D')) {
					return true;
				}

continue;
			} elseif (!$value instanceof $type) {
				continue;
			}

if (isset($item[1])) {
				$length = $value;
				if (isset(static::$counters[$type])) {
					$length = static::$counters[$type]($value);
				}

$range = explode('..', $item[1]);
				if (!isset($range[1])) {
					$range[1] = $range[0];
				}

if (($range[0] !== '' && $length < $range[0]) || ($range[1] !== '' && $length > $range[1])) {
					continue;
				}
			}

return true;
		}

return false;
	}

/**
	 * Finds whether all values are of expected types separated by pipe.
	 * @param  mixed[]  $values
	 */
	public static function everyIs(iterable $values, string $expected): bool
	{
		foreach ($values as $value) {
			if (!static::is($value, $expected)) {
				return false;
			}
		}

return true;
	}

/**
	 * Checks if the value is an integer or a float.
	 * @return ($value is int|float ? true : false)
	 */
	public static function isNumber(mixed $value): bool
	{
		return is_int($value) || is_float($value);
	}

/**
	 * Checks if the value is an integer or a integer written in a string.
	 * @return ($value is non-empty-string ? bool : ($value is int ? true : false))
	 */
	public static function isNumericInt(mixed $value): bool
	{
		return is_int($value) || (is_string($value) && preg_match('#^[+-]?[0-9]+$#D', $value));
	}

/**
	 * Checks if the value is a number or a number written in a string.
	 * @return ($value is non-empty-string ? bool : ($value is int|float ? true : false))
	 */
	public static function isNumeric(mixed $value): bool
	{
		return is_float($value) || is_int($value) || (is_string($value) && preg_match('#^[+-]?([0-9]++\.?[0-9]*|\.[0-9]+)$#D', $value));
	}

/**
	 * Checks if the value is a syntactically correct callback.
	 */
	public static function isCallable(mixed $value): bool
	{
		return $value && is_callable($value, syntax_only: true);
	}

/**
	 * Checks if the value is a valid UTF-8 string.
	 */
	public static function isUnicode(mixed $value): bool
	{
		return is_string($value) && preg_match('##u', $value);
	}

/**
	 * Checks if the value is 0, '', false or null.
	 * @return ($value is 0|''|false|null ? true : false)
	 */
	public static function isNone(mixed $value): bool
	{
		return $value == null; // intentionally ==
	}

/** @internal */
	public static function isMixed(): bool
	{
		return true;
	}

/**
	 * Checks if a variable is a zero-based integer indexed array.
	 * @deprecated  use Nette\Utils\Arrays::isList
	 * @return ($value is list ? true : false)
	 */
	public static function isList(mixed $value): bool
	{
		return Arrays::isList($value);
	}

/**
	 * Checks if the value is in the given range [min, max], where the upper or lower limit can be omitted (null).
	 * Numbers, strings and DateTime objects can be compared.
	 */
	public static function isInRange(mixed $value, array $range): bool
	{
		if ($value === null || !(isset($range[0]) || isset($range[1]))) {
			return false;
		}

$limit = $range[0] ?? $range[1];
		if (is_string($limit)) {
			$value = (string) $value;
		} elseif ($limit instanceof \DateTimeInterface) {
			if (!$value instanceof \DateTimeInterface) {
				return false;
			}
		} elseif (is_numeric($value)) {
			$value *= 1;
		} else {
			return false;
		}

return (!isset($range[0]) || ($value >= $range[0])) && (!isset($range[1]) || ($value <= $range[1]));
	}

/**
	 * Checks if the value is a valid email address. It does not verify that the domain actually exists, only the syntax is verified.
	 */
	public static function isEmail(string $value): bool
	{
		$atom = "[-a-z0-9!#$%&'*+/=?^_`{|}~]"; // RFC 5322 unquoted characters in local-part
		$alpha = "a-z\x80-\xFF"; // superset of IDN
		return (bool) preg_match(<<<XX
			(^(?n)
				("([ !#-[\\]-~]*|\\\\[ -~])+"|$atom+(\\.$atom+)*)  # quoted or unquoted
				@
				([0-9$alpha]([-0-9$alpha]{0,61}[0-9$alpha])?\\.)+  # domain - RFC 1034
				[$alpha]([-0-9$alpha]{0,17}[$alpha])?              # top domain
			$)Dix
			XX, $value);
	}

/**
	 * Checks if the value is a valid URL address.
	 */
	public static function isUrl(string $value): bool
	{
		$alpha = "a-z\x80-\xFF";
		return (bool) preg_match(<<<XX
			(^(?n)
				https?://(
					(([-_0-9$alpha]+\\.)*                       # subdomain
						[0-9$alpha]([-0-9$alpha]{0,61}[0-9$alpha])?\\.)?  # domain
						[$alpha]([-0-9$alpha]{0,17}[$alpha])?   # top domain
					|\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}  # IPv4
					|\\[[0-9a-f:]{3,39}\\]                      # IPv6
				)(:\\d{1,5})?                                   # port
				(/\\S*)?                                        # path
				(\\?\\S*)?                                      # query
				(\\#\\S*)?                                      # fragment
			$)Dix
			XX, $value);
	}

/**
	 * Checks if the value is a valid URI address, that is, actually a string beginning with a syntactically valid schema.
	 */
	public static function isUri(string $value): bool
	{
		return (bool) preg_match('#^[a-z\d+\.-]+:\S+$#Di', $value);
	}

/**
	 * Checks whether the input is a class, interface or trait.
	 * @deprecated
	 */
	public static function isType(string $type): bool
	{
		return class_exists($type) || interface_exists($type) || trait_exists($type);
	}

/**
	 * Checks whether the input is a valid PHP identifier.
	 */
	public static function isPhpIdentifier(string $value): bool
	{
		return preg_match('#^[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*$#D', $value) === 1;
	}

/**
	 * Determines if type is PHP built-in type. Otherwise, it is the class name.
	 */
	public static function isBuiltinType(string $type): bool
	{
		return isset(self::BuiltinTypes[strtolower($type)]);
	}

/**
	 * Determines if type is special class name self/parent/static.
	 */
	public static function isClassKeyword(string $name): bool
	{
		return (bool) preg_match('#^(self|parent|static)$#Di', $name);
	}

/**
	 * Checks whether the given type declaration is syntactically valid.
	 */
	public static function isTypeDeclaration(string $type): bool
	{
		return (bool) preg_match(<<<'XX'
			~((?n)
				\?? (?<type> \\? (?<name> [a-zA-Z_\x7f-\xff][\w\x7f-\xff]*) (\\ (?&name))* ) |
				(?<intersection> (?&type) (& (?&type))+ ) |
				(?<upart> (?&type) | $ (?&intersection) $ )  (\| (?&upart))+
			)$~xAD
			XX, $type);
	}
}

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