rename jadx-cli, update build scripts

jadx-cli/src/main/java/jadx/cli/JadxArgs.java

@@ -80,6 +80,7 @@ public class JadxArgs implements IJadxArgs {
 			processArgs();
 		} catch (JadxException e) {
 			LOG.error(e.getMessage());
+			printUsage();
 			System.exit(1);
 		}
 	}
@@ -103,10 +104,13 @@ public class JadxArgs implements IJadxArgs {
 
 		if (input.isEmpty()) {
 			if (inputRequired)
-				throw new JadxException("Please specify at least one input file");
+				throw new JadxException("Please specify input file");
 			else
 				return;
 		}
+		if (input.size() > 1) {
+			throw new JadxException("Only one input file is supported");
+		}
 
 		if (outDirName == null) {
 			File file = new File(files.get(0));
@@ -129,6 +133,7 @@ public class JadxArgs implements IJadxArgs {
 		JCommander jc = new JCommander(this);
 		// print usage in not sorted fields order (by default its sorted by description)
 		PrintStream out = System.out;
+		out.println();
 		out.println("jadx - dex to java decompiler, version: " + Consts.JADX_VERSION);
 		out.println();
 		out.println("usage: jadx [options] " + jc.getMainParameterDescription());

jadx-cli/src/main/java/jadx/cli/JadxCLI.java

@@ -2,11 +2,7 @@ package jadx.cli;
 
 import jadx.api.Decompiler;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 public class JadxCLI {
-	private static final Logger LOG = LoggerFactory.getLogger(JadxCLI.class);
 
 	public static void main(String[] args) {
 		JadxArgs jadxArgs = new JadxArgs(args, true);