Merge pull request #23 from rsmith72/master

add ability to convert Java files via command line

Author: rzymek

README.md

@@ -83,6 +83,13 @@ Usage
     val javaCode = '//java code'
     val String xtendCode = j2x.toXtend(javaCode);
 
+
+**5.** Or use it on the command line:
+
+    java -jar target/java2xtend-1.0-SNAPSHOT-jar-with-dependencies.jar <path to java file>
+
+The converted XTend code will be output to stdout.
+
 Development
 ===========
 1. Generate Eclipse project: `mvn eclipse:eclipse`

pom.xml

@@ -50,7 +50,6 @@
 			<groupId>commons-io</groupId>
 			<artifactId>commons-io</artifactId>
 			<version>2.4</version>
-			<scope>test</scope>
 		</dependency>
 		<dependency>
 			<groupId>org.eclipse</groupId>
@@ -111,6 +110,20 @@
 					</execution>
 				</executions>
 			</plugin>
+		    <plugin>
+		      <artifactId>maven-assembly-plugin</artifactId>
+		      <configuration>
+		        <archive>
+		          <manifest>
+		            <mainClass>org.eclipse.xtend.java2xtend.Java2Xtend</mainClass>
+		          </manifest>
+		        </archive>
+		        <descriptorRefs>
+		          <descriptorRef>jar-with-dependencies</descriptorRef>
+		        </descriptorRefs>
+		      </configuration>
+		    </plugin>
+
 		</plugins>
 	</build>
 	<repositories>

src/main/java/org/eclipse/xtend/java2xtend/Java2Xtend.xtend

@@ -4,6 +4,8 @@ import org.eclipse.jdt.core.dom.AST
 import org.eclipse.jdt.core.dom.ASTParser
 import org.eclipse.jdt.core.dom.CompilationUnit
 import org.eclipse.jdt.internal.core.dom.XtendASTFlattener
+import org.apache.commons.io.FileUtils
+import java.nio.charset.Charset
 
 class Java2Xtend {
 	def String toXtend(String javaSrc) {
@@ -21,4 +23,16 @@ class Java2Xtend {
 		ast.accept(printer)
 		return printer.result
 	}
+
+	def static void main(String[] args) {
+		val j2x = new org.eclipse.xtend.java2xtend.Java2Xtend
+
+		val file = new java.io.File(args.get(0))
+
+		val javaCode = FileUtils::readFileToString(file, Charset::defaultCharset())
+
+		val String xtendCode = j2x.toXtend(javaCode)
+
+		println(xtendCode)
+	}
 }