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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Console; |
| 6 | |
| 7 | use Attribute; |
| 8 | use ReflectionAttribute; |
| 9 | use ReflectionClass; |
| 10 | use ValueError; |
| 11 | |
| 12 | /** |
| 13 | * Describes one option of a command in its help output. |
| 14 | * |
| 15 | * Give the flag names and, for value-taking options, a `value` label; the |
| 16 | * `--opt=<value>` notation is rendered by the runner so it cannot drift from |
| 17 | * the `=`-only parser. Omit `value` for a boolean flag; set `optionalValue` |
| 18 | * for a flag whose value is optional (`--opt[=<value>]`). A `default` |
| 19 | * renders as `[default: ...]` after the description. |
| 20 | * |
| 21 | * @api |
| 22 | */ |
| 23 | #[Attribute(Attribute::TARGET_CLASS | Attribute::IS_REPEATABLE)] |
| 24 | final class Opt |
| 25 | { |
| 26 | // Attribute parameters are passed as named arguments; a parameter |
| 27 | // object would defeat the attribute syntax. |
| 28 | // @mago-expect lint:excessive-parameter-list |
| 29 | public function __construct( |
| 30 | public readonly string $long, |
| 31 | public readonly string $description, |
| 32 | public readonly string $short = '', |
| 33 | public readonly string $value = '', |
| 34 | public readonly bool $optionalValue = false, |
| 35 | public readonly string $default = '', |
| 36 | ) { |
| 37 | if (preg_match('/^--[^-=\s][^=\s]*$/', $long) !== 1) { |
| 38 | throw new ValueError("Invalid option name '{$long}'"); |
| 39 | } |
| 40 | |
| 41 | if ($short !== '' && preg_match('/^-[^-=\s][^=\s]*$/', $short) !== 1) { |
| 42 | throw new ValueError("Invalid short option name '{$short}'"); |
| 43 | } |
| 44 | |
| 45 | if ($optionalValue && $value === '') { |
| 46 | throw new ValueError("Option '{$long}' declares an optional value without a value label"); |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Reads all option attributes off a command instance or class. |
| 52 | * |
| 53 | * @param class-string|object $command |
| 54 | * @return list<self> |
| 55 | */ |
| 56 | public static function of(object|string $command): array |
| 57 | { |
| 58 | $class = is_object($command) ? $command::class : $command; |
| 59 | |
| 60 | return array_map( |
| 61 | static fn(ReflectionAttribute $attribute): self => $attribute->newInstance(), |
| 62 | new ReflectionClass($class)->getAttributes(self::class), |
| 63 | ); |
| 64 | } |
| 65 | } |