feat: extended cli options

orchestrator/rdfc-cli/src/main/kotlin/Help.kt

@@ -5,5 +5,12 @@ import kotlin.system.exitProcess
 /** Prints a help message to the console and exits the process with exit code 1. */
 internal fun help(): Nothing {
   println("Usage: rdf-connect <mode> <path>")
+  println("\nModes:")
+  println("  install         Download and prepare dependencies")
+  println("  exec            Execute a pipeline")
+  println("  validate        Validate a configuration file")
+  println("\nOptions:")
+  println("  -h, --help      Print this help message")
+  println("  -v, --version   Show the version number")
   exitProcess(1)
 }

orchestrator/rdfc-cli/src/main/kotlin/Main.kt

@@ -4,17 +4,27 @@ import kotlinx.coroutines.runBlocking
 
 /** The main entry point for the RDF-Connect orchestrator. */
 fun main(args: Array<String>) = runBlocking {
-  // No arguments provided.
   if (args.isEmpty()) {
     help()
   }
 
+  if (args.any { it in listOf("-h", "--help") }) {
+    help()
+  }
+
+  if (args.any { it in listOf("-v", "--version") }) {
+    version()
+  }
+
+  if (args.size != 2) {
+    help()
+  }
+
   // Execute the chosen command.
   when (args[0]) {
     "exec" -> exec(args[1])
-    "check" -> validate(args[1])
+    "validate" -> validate(args[1])
     "install" -> install(args[1])
-    "help" -> help()
     else -> help()
   }
 }

orchestrator/rdfc-cli/src/main/kotlin/Version.kt

@@ -0,0 +1,8 @@
+package technology.idlab.rdfc.cli
+
+import kotlin.system.exitProcess
+
+internal fun version(): Nothing {
+  println("RDF-Connect version 0.0.1")
+  exitProcess(0)
+}