Add version to CLI output

Author: Stefan Kapferer

build.gradle

@@ -35,6 +35,15 @@ application {
 startScripts {
     applicationName = 'cm'
 }
+jar {
+    manifest {
+        attributes (
+                'Implementation-Title': 'Context Mapper Command Line Interface (CLI)',
+                'Implementation-Version': project.version,
+                'Main-Class': 'org.contextmapper.cli.ContextMapperCLI'
+        )
+    }
+}
 
 if (!project.hasProperty('signing.secretKeyRingFile')) {
     project.ext.'signing.secretKeyRingFile' = "${rootDir}/secret-key.gpg"

src/main/java/org/contextmapper/cli/ContextMapperCLI.java

@@ -39,7 +39,7 @@ public static void main(String[] args) {
     }
 
     protected void run(String[] args) {
-        System.out.println("Context Mapper CLI");
+        System.out.println("Context Mapper CLI " + getVersion());
 
         if (args == null || args.length == 0) {
             printUsages();
@@ -54,4 +54,9 @@ private void printUsages() {
         System.out.println("Usage: cm " + COMPILE_COMMAND + "|" + GENERATE_COMMAND + " [options]");
     }
 
+    private String getVersion() {
+        String implVersion = ContextMapperCLI.class.getPackage().getImplementationVersion();
+        return implVersion != null ? "v" + implVersion : "DEVELOPMENT VERSION";
+    }
+
 }

src/test/java/org/contextmapper/cli/ContextMapperCLITest.java

@@ -69,7 +69,7 @@ void main_WhenCalledWithoutCommand_ThenPrintUsage() {
         ContextMapperCLI.main(params);
 
         // then
-        assertThat(outContent.toString()).isEqualTo("Context Mapper CLI" + System.lineSeparator() +
+        assertThat(outContent.toString()).isEqualTo("Context Mapper CLI DEVELOPMENT VERSION" + System.lineSeparator() +
                 "Usage: cm compile|generate [options]" + System.lineSeparator());
     }
 
@@ -82,7 +82,7 @@ void run_WhenCalledWithoutCommand_ThenPrintUsage() {
         contextMapperCLI.run(params);
 
         // then
-        assertThat(outContent.toString()).isEqualTo("Context Mapper CLI" + System.lineSeparator() +
+        assertThat(outContent.toString()).isEqualTo("Context Mapper CLI DEVELOPMENT VERSION" + System.lineSeparator() +
                 "Usage: cm compile|generate [options]" + System.lineSeparator());
     }