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<?php declare(strict_types=1); namespace Dotenv; use Dotenv\Exception\ValidationException; use Dotenv\Repository\RepositoryInterface; use Dotenv\Util\Regex; use Dotenv\Util\Str; class Validator { /** * The environment repository instance. * * @var \Dotenv\Repository\RepositoryInterface / private $repository; /* * The variables to validate. * * @var string[] / private $variables; /* * Create a new validator instance. * * @param \Dotenv\Repository\RepositoryInterface $repository * @param string[] $variables * * @throws \Dotenv\Exception\ValidationException * * @return void / public function __construct(RepositoryInterface $repository, array $variables) { $this->repository = $repository; $this->variables = $variables; } /* * Assert that each variable is present. * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function required() { return $this->assert( static function (?string $value) { return $value !== null; }, 'is missing' ); } /* * Assert that each variable is not empty. * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function notEmpty() { return $this->assertNullable( static function (string $value) { return Str::len(\trim($value)) > 0; }, 'is empty' ); } /* * Assert that each specified variable is an integer. * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function isInteger() { return $this->assertNullable( static function (string $value) { return \ctype_digit($value); }, 'is not an integer' ); } /* * Assert that each specified variable is a boolean. * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function isBoolean() { return $this->assertNullable( static function (string $value) { if ($value === '') { return false; } return \filter_var($value, \FILTER_VALIDATE_BOOLEAN, \FILTER_NULL_ON_FAILURE) !== null; }, 'is not a boolean' ); } /* * Assert that each variable is amongst the given choices. * * @param string[] $choices * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function allowedValues(array $choices) { return $this->assertNullable( static function (string $value) use ($choices) { return \in_array($value, $choices, true); }, \sprintf('is not one of [%s]', \implode(', ', $choices)) ); } /* * Assert that each variable matches the given regular expression. * * @param string $regex * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function allowedRegexValues(string $regex) { return $this->assertNullable( static function (string $value) use ($regex) { return Regex::matches($regex, $value)->success()->getOrElse(false); }, \sprintf('does not match "%s"', $regex) ); } /* * Assert that the callback returns true for each variable. * * @param callable(?string):bool $callback * @param string $message * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator / public function assert(callable $callback, string $message) { $failing = []; foreach ($this->variables as $variable) { if ($callback($this->repository->get($variable)) === false) { $failing[] = \sprintf('%s %s', $variable, $message); } } if (\count($failing) > 0) { throw new ValidationException(\sprintf( 'One or more environment variables failed assertions: %s.', \implode(', ', $failing) )); } return $this; } /* * Assert that the callback returns true for each variable. * * Skip checking null variable values. * * @param callable(string):bool $callback * @param string $message * * @throws \Dotenv\Exception\ValidationException * * @return \Dotenv\Validator */ public function assertNullable(callable $callback, string $message) { return $this->assert( static function (?string $value) use ($callback) { if ($value === null) { return true; } return $callback($value); }, $message ); } }

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