Argument parsing

src/Main.kt

@@ -1,15 +1,45 @@
+import com.sun.org.apache.bcel.internal.util.Args
+import com.xenomachina.argparser.ArgParser
+import com.xenomachina.argparser.mainBody
 import interpreter.FileLoader
+import io.GhentPrologArgParser
 import io.Logger
 import prolog.Program
 import prolog.ast.logic.Clause
 import repl.Repl
 
-fun main() {
-    // TODO Make this a command line argument
-    // Turn on debug mode
-    Logger.level = Logger.Level.DEBUG
+fun main(args: Array<String>) = mainBody {
+    // Parse command line arguments
+    val parsedArgs = ArgParser(args).parseInto(::GhentPrologArgParser)
 
-    FileLoader().load("tests/parser/resources/parent.pl")
+    parsedArgs.run {
+        val loader = FileLoader()
 
-    Repl().start()
+        // Set the verbosity level
+        Logger.level = verbosity
+
+        // Check if script was provided
+        for (file in script) {
+            loader.load(file)
+        }
+
+        // Check if REPL was requested
+        if (repl) {
+            Repl().start()
+        } else {
+            Logger.warn("REPL not started. Use -r or --repl to start the REPL.")
+        }
+    }
+}
+
+fun help() {
+    println("""
+        Ghent Prolog: A Prolog interpreter in Kotlin
+        
+        Options:
+        -s, --source <file>  Specify the source file to load
+        -r, --repl           Start the REPL (default)
+        -v, --verb
+        -h, --help           Show this help message
+    """.trimIndent())
 }