clp

A flexible and easy-to-use command-line parser for Scala programs.

This project provides a powerful way to parse command-line arguments into Scala case classes, supporting various data types such as String, Int, List[_], and even JSON-encoded strings.

Installation

To include this library in your project, clone this repository and install it locally.

For Maven users, add the following dependency to your pom.xml:

<dependency>
   <groupId>github.avinoamn</groupId>
   <artifactId>clp_${scala.major.version}</artifactId>
   <version>1.0.0</version>
   <scope>compile</scope>
</dependency>

Basic program args example

case class Args(a: String, b: Int, c: List[String])

val args: Array = Array("--a", "asd", "--b", "123", "--c", "a,s,d")

CommandLineParser.parse[Args](args)

Case class program arg example (from json string)

import github.avinoamn.clp.types.JsonString
import io.circe.generic.JsonCodec

@JsonCodec case class Arg(a: String) extends JsonString
case class Args(a: Arg)

val args: Array = Array("--a", "{\"a\": \"asd\"}")

CommandLineParser.parse[Args](args)

Case class program arg example (from base64 encoded json string)

import github.avinoamn.clp.types.Base64EncodedJsonString
import io.circe.generic.JsonCodec

@JsonCodec case class Arg(a: String) extends Base64EncodedJsonString
case class Args(a: Arg)

val args: Array = Array("--a", "eyJhIjogImFzZCJ9")

CommandLineParser.parse[Args](args)

Supported Types:

• String
• Boolean
• Int
• Long
• Float
• Double
• List[_]: _ can be of any supported type
• case class: must have the @JsonCodec annotation and extend either JsonString or Base64EncodedJsonString traits for the decoding to succeed