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<?php |
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declare(strict_types=1); |
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namespace EdifactParser\Segments; |
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use function class_implements; |
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use function in_array; |
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use InvalidArgumentException; |
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use Webmozart\Assert\Assert; |
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/** @psalm-immutable */ |
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final class SegmentFactory implements SegmentFactoryInterface |
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{ |
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public const DEFAULT_SEGMENTS = [ |
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'UNH' => UNHMessageHeader::class, |
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'DTM' => DTMDateTimePeriod::class, |
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'NAD' => NADNameAddress::class, |
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'MEA' => MEADimensions::class, |
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'CNT' => CNTControl::class, |
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'PCI' => PCIPackageId::class, |
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'BGM' => BGMBeginningOfMessage::class, |
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'UNT' => UNTMessageFooter::class, |
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]; |
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private const TAG_LENGTH = 3; |
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/** |
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* The list of "segment class names" for every segment that might be created. |
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* |
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* @var array<string,string> |
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*/ |
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private array $segments; |
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/** |
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* @psalm-pure |
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* |
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* @param array<string,string> $segments |
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* The key: The 'Segment Tag' -> A three-character (alphanumeric) that identifies the segment. |
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* The value: The class that will be created once that 'Segment Tag' is found. It must implement |
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* the `SegmentInterface` in order to be able to work with the factory, otherwise it will be ignored. |
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*/ |
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public static function withSegments(array $segments): self |
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{ |
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return new self($segments); |
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} |
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/** @psalm-pure */ |
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public static function withDefaultSegments(): self |
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{ |
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return new self(self::DEFAULT_SEGMENTS); |
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} |
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/** @param array<string,string> $segments */ |
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private function __construct(array $segments) |
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{ |
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Assert::allLength(array_keys($segments), self::TAG_LENGTH); |
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array_map(function (string $class): void { |
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if (!$this->classImplements($class, SegmentInterface::class)) { |
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throw new InvalidArgumentException("'{$class}' must implements 'SegmentInterface'"); |
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} |
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}, $segments); |
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$this->segments = $segments; |
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} |
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public function segmentFromArray(array $rawArray): SegmentInterface |
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{ |
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$tag = (string) $rawArray[0]; |
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Assert::length($tag, self::TAG_LENGTH); |
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$className = $this->segments[$tag] ?? ''; |
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if (!empty($className)) { |
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$segment = new $className($rawArray); |
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Assert::isInstanceOf($segment, SegmentInterface::class); |
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return $segment; |
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} |
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return new UnknownSegment($rawArray); |
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} |
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private function classImplements(string $className, string $interface): bool |
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{ |
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$interfaces = class_implements($className); |
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return $interfaces && in_array($interface, class_implements($className)); |
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} |
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} |
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Chemaclass /
EdifactParser
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.