Convert Decompiler to Kotlin

decompiler/src/main/java/dev/openrs2/decompiler/Decompiler.java

@@ -1,76 +0,0 @@
-package dev.openrs2.decompiler;
-
-import java.io.Closeable;
-import java.io.IOException;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import kotlin.jvm.functions.Function1;
-import org.jetbrains.java.decompiler.main.Fernflower;
-import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences;
-
-public final class Decompiler implements Closeable {
-	private static final ImmutableMap<String, Object> OPTIONS = ImmutableMap.of(
-		IFernflowerPreferences.ASCII_STRING_CHARACTERS, "1",
-		IFernflowerPreferences.INDENT_STRING, "\t",
-		IFernflowerPreferences.SYNTHETIC_NOT_SET, "1"
-	);
-
-	private static Path getDestination(String archive) {
-		archive = archive.replaceAll("(?:_gl)?[.]jar$", "");
-		switch (archive) {
-		case "runescape":
-			archive = "client";
-			break;
-		case "jaggl":
-			archive = "gl";
-			break;
-		case "jaggl_dri":
-			archive = "gl-dri";
-			break;
-		}
-		return Paths.get("nonfree").resolve(archive).resolve("src/main/java");
-	}
-
-	public static void main(String[] args) throws IOException {
-		var deobOutput = Paths.get("nonfree/code/deob");
-		var sources = ImmutableList.of(
-			deobOutput.resolve("runescape_gl.jar"),
-			deobOutput.resolve("jaggl.jar"),
-			deobOutput.resolve("jaggl_dri.jar"),
-			deobOutput.resolve("loader_gl.jar"),
-			deobOutput.resolve("signlink_gl.jar"),
-			deobOutput.resolve("unpack_gl.jar"),
-			deobOutput.resolve("unpacker_gl.jar")
-		);
-
-		try (var decompiler = new Decompiler(sources, Decompiler::getDestination)) {
-			decompiler.run();
-		}
-	}
-
-	private final DecompilerIo io;
-	private final Fernflower fernflower;
-	private final ImmutableList<Path> sources;
-
-	public Decompiler(ImmutableList<Path> sources, Function1<String, Path> destination) {
-		this.io = new DecompilerIo(destination);
-		this.fernflower = new Fernflower(io, io, OPTIONS, Slf4jFernflowerLogger.INSTANCE);
-		this.sources = sources;
-	}
-
-	public void run() {
-		for (var source : sources) {
-			fernflower.addSource(source.toFile());
-		}
-
-		fernflower.decompileContext();
-	}
-
-	@Override
-	public void close() throws IOException {
-		io.close();
-	}
-}

decompiler/src/main/java/dev/openrs2/decompiler/Decompiler.kt

@@ -0,0 +1,61 @@
+package dev.openrs2.decompiler
+
+import org.jetbrains.java.decompiler.main.Fernflower
+import org.jetbrains.java.decompiler.main.extern.IFernflowerPreferences
+import java.io.Closeable
+import java.nio.file.Path
+import java.nio.file.Paths
+
+class Decompiler(
+    private val sources: List<Path>,
+    destination: (String) -> Path
+) : Closeable {
+    private val io = DecompilerIo(destination)
+    private val fernflower = Fernflower(io, io, OPTIONS, Slf4jFernflowerLogger)
+
+    fun run() {
+        for (source in sources) {
+            fernflower.addSource(source.toFile())
+        }
+        fernflower.decompileContext()
+    }
+
+    override fun close() {
+        io.close()
+    }
+
+    companion object {
+        private val OPTIONS = mapOf(
+            IFernflowerPreferences.ASCII_STRING_CHARACTERS to "1",
+            IFernflowerPreferences.INDENT_STRING to "\t",
+            IFernflowerPreferences.SYNTHETIC_NOT_SET to "1"
+        )
+
+        private fun getDestination(archive: String): Path {
+            var dir = archive.replace(Regex("(?:_gl)?[.]jar$"), "")
+            when (dir) {
+                "runescape" -> dir = "client"
+                "jaggl" -> dir = "gl"
+                "jaggl_dri" -> dir = "gl-dri"
+            }
+            return Paths.get("nonfree").resolve(dir).resolve("src/main/java")
+        }
+
+        @JvmStatic
+        fun main(args: Array<String>) {
+            val deobOutput = Paths.get("nonfree/code/deob")
+            val sources = listOf(
+                deobOutput.resolve("runescape_gl.jar"),
+                deobOutput.resolve("jaggl.jar"),
+                deobOutput.resolve("jaggl_dri.jar"),
+                deobOutput.resolve("loader_gl.jar"),
+                deobOutput.resolve("signlink_gl.jar"),
+                deobOutput.resolve("unpack_gl.jar"),
+                deobOutput.resolve("unpacker_gl.jar")
+            )
+            Decompiler(sources, this::getDestination).use {
+                it.run()
+            }
+        }
+    }
+}