Store version number in manifest

build.gradle

@@ -7,9 +7,10 @@ apply plugin: 'idea'
 sourceCompatibility = 1.6
 targetCompatibility = 1.6
 
-version = 'dev'
+version = file('version').readLines().get(0)
 
 mainClassName = "jadx.Main"
+manifest.mainAttributes("jadx-version" : version)
 
 project.ext {
     mainSamplesClass = "jadx.samples.RunTests"  

src/main/java/jadx/Consts.java

@@ -1,7 +1,9 @@
 package jadx;
 
+import jadx.utils.Utils;
+
 public class Consts {
-	public static final String JADX_VERSION = "dev";
+	public static final String JADX_VERSION = Utils.getJadxVersion();
 
 	public static final boolean DEBUG = false;
 

src/main/java/jadx/JadxArgs.java

@@ -110,7 +110,7 @@ public class JadxArgs {
 		JCommander jc = new JCommander(this);
 		// print usage in not sorted fields order (by default its sorted by description)
 		PrintStream out = System.out;
-		out.println("jadx - dex to java decompiler, version: '" + Consts.JADX_VERSION + "'");
+		out.println("jadx - dex to java decompiler, version: " + Consts.JADX_VERSION);
 		out.println();
 		out.println("usage: jadx [options] " + jc.getMainParameterDescription());
 		out.println("options:");

src/main/java/jadx/utils/Utils.java

@@ -1,11 +1,19 @@
 package jadx.utils;
 
+import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringWriter;
+import java.net.URL;
+import java.util.Enumeration;
 import java.util.Iterator;
 import java.util.List;
+import java.util.jar.Manifest;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class Utils {
+	private static final Logger LOG = LoggerFactory.getLogger(Utils.class);
 
 	public static String cleanObjectName(String obj) {
 		int last = obj.length() - 1;
@@ -52,4 +60,20 @@ public class Utils {
 		}
 		return sb.toString();
 	}
+
+	public static String getJadxVersion() {
+		try {
+			Enumeration<URL> resources =
+					new Utils().getClass().getClassLoader().getResources("META-INF/MANIFEST.MF");
+			while (resources.hasMoreElements()) {
+				Manifest manifest = new Manifest(resources.nextElement().openStream());
+				String ver = manifest.getMainAttributes().getValue("jadx-version");
+				if (ver != null)
+					return ver;
+			}
+		} catch (IOException e) {
+			LOG.error("Can't get manifest file", e);
+		}
+		return "dev";
+	}
 }

version

@@ -0,0 +1 @@
+0.4