The Value Generator plugin is used to generate hashes for strings, to calculate base64 encodings, escape and encode URLs/URIs and to generate GUIDs versions 1, 3, 4 and 5.
- Supports the hashing algorithms from System.Security.Cryptography:
- MD5
- SHA1
- SHA256
- SHA384
- SHA512
- If other algorithms are added to System.Security.Cryptography, they can be added to the `_algorithms` dictionary. [`InputParser.ParseInput()`](#inputparser) will need to return a `HashRequest` for the algorithm in the query
- Utility class for generating or calculating GUIDs
- Generating GUID versions 1 and 4 is done using builtin APIs. [`UuidCreateSequential`](https://learn.microsoft.com/en-us/windows/win32/api/rpcdce/nf-rpcdce-uuidcreatesequential) for version 1 and `System.Guid.NewGuid()` for version 4
- Versions 3 and 5 take two parameters, a namespace and a name
- The namespace must be a valid GUID or one of the [predefined ones](https://datatracker.ietf.org/doc/html/rfc4122#appendix-C)
- The `PredefinedNamespaces` dictionary contains aliases for the predefined namespaces
- It is responsible only for parsing the query from the user
- Based on the user query, the `ParseInput()` method must return an object that implements the `IComputeRequest` interface or it must throw one of `FormatException` or `ArgumentException`
- Throwing an `ArgumentException` should signal the fact the query contains a mistake that the user can fix (eg. an unsupported hash function, an invalid GUID version, an invalid namespace, etc)
> The error message will be shown to the user and no log message will be created
- Throwing a `FormatException` should signal either:
- that the query may become valid, and so it does not make sense to show an error just yet (eg. the query does not contain a request yet, a hash request without a string to hash)
- that the query is completely invalid
> The error message will not be shown to the user but a log message will be created
1. To add a new value generator, create a folder under `/src/modules/launcher/Plugins/Community.PowerToys.Run.Plugin.ValueGenerator/Generators/` and inside it add a class that implements `IComputeRequest`.