Add support for decompressing rar files

Author: tomas-sexenian

gxcompress/pom.xml

@@ -23,6 +23,11 @@
             <artifactId>xz</artifactId>
             <version>1.9</version>
         </dependency>
+        <dependency>
+            <groupId>com.github.junrar</groupId>
+            <artifactId>junrar</artifactId>
+            <version>7.5.5</version>
+        </dependency>
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>

gxcompress/src/main/java/com/genexus/compression/GXCompressor.java

@@ -12,6 +12,8 @@
 import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
 import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
 import org.apache.commons.io.IOUtils;
+import com.github.junrar.Junrar;
+import com.github.junrar.exception.RarException;
 
 import java.io.*;
 import java.nio.file.Files;
@@ -112,6 +114,9 @@ public static int decompress(String file, String path) {
 				case "jar":
 					decompressJar(toCompress, path);
 					return 0;
+				case "rar":
+					decompressRar(toCompress, path);
+					return 0;
 				default:
 					log.error("Unsupported compression format for decompression: {}", extension);
 					return -3;
@@ -421,6 +426,10 @@ public static void decompressJar(File jarFile, String outputPath) throws IOExcep
 		}
 	}
 
+	public static void decompressRar(File rarFile, String destinationPath) throws RarException, IOException{
+		Junrar.extract(rarFile, new File(destinationPath));
+	}
+
 	private static CompressionFormat getCompressionFormat(String format) {
 		try {
 			return CompressionFormat.valueOf(format.toUpperCase());