updated build scripts to sbt 1.0

added service returning a tar archive with all the requested packages

src/main/java/com/oggio88/jpacrepo/service/PacmanWebService.java

@@ -9,7 +9,8 @@ import com.oggio88.jpacrepo.model.PkgName;
 import com.oggio88.jpacrepo.model.StringList;
 import com.oggio88.jpacrepo.pacbase.Parser;
 import com.oggio88.jpacrepo.persistence.QueryEngine;
-import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
+import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
+import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
 
 import javax.annotation.Resource;
 import javax.ejb.*;
@@ -354,9 +355,54 @@ public class PacmanWebService
     }
 
     @POST
-    public Response foo()
+    @Path("/downloadTar")
+    @Produces("application/x-tar")
+    public Response downloadTar(List<String> files)
     {
-        TarArchiveouputStream tais = new TarArchiveOutputStream();
+        for(String fname : files)
+        {
+            if(!ctx.getFile(fname).exists()) throw new NotFoundException(String.format("Package file '%s' does not exist", fname));
+        }
+        StreamingOutput stream = new StreamingOutput()
+        {
+            @Override
+            public void write(OutputStream output) throws IOException, WebApplicationException
+            {
+                TarArchiveOutputStream taos = new TarArchiveOutputStream(output);
+                try
+                {
+                    for (String fname : files)
+                    {
+                        File file = ctx.getFile(fname);
+                        FileInputStream input = new FileInputStream(file);
+
+                        TarArchiveEntry entry = new TarArchiveEntry(fname);
+                        entry.setSize(file.length());
+                        taos.putArchiveEntry(entry);
+                        byte[] bytes = new byte[1024];
+                        while (true)
+                        {
+                            int size = input.read(bytes);
+                            if (size < 0) break;
+                            else taos.write(bytes, 0, size);
+                        }
+                        taos.closeArchiveEntry();
+                    }
+                    taos.close();
+                    output.close();
+                }
+                catch (Exception e)
+                {
+                    throw new WebApplicationException(e);
+                }
+                finally
+                {
+                    taos.close();
+                    output.close();
+                }
+            }
+        };
+        return Response.ok(stream).build();
     }
 
     private Response manageQueryResult(List<PkgData> list)