Add "usm manifest package" command

src/cli/Manifest.vala

@@ -12,7 +12,7 @@ public static int manifest_main(string[] args) {
 
     var verb = args[1];
 
-    if(verb != "remove" && verb != "acquire" && verb != "install") {
+    if(verb != "remove" && verb != "acquire" && verb != "install" && verb != "package") {
         if(args.length < 3) {
             manifest_usage();
             return 255;
@@ -61,6 +61,10 @@ public static int manifest_main(string[] args) {
         return uininstall();
     }
 
+    if(verb == "package") {
+        return package();
+    }
+
 
     manifest_usage();
     return 255;
@@ -285,5 +289,73 @@ private int uininstall() {
         }
     }
 
+    return 0;
+}
+
+private int package() {
+    if(manifest.executables.acquire != null) {
+        printerr("Running Acquire...\n");
+        var result = acquire();
+        if(result != 0) {
+            printerr(@"Acquire failed, code: $(result)\n");
+            return result;
+        }
+    }
+    else {
+        printerr("Manifest does not specify an acquire script, assuming we have everything we need already and packaging.\n");
+    }
+
+    var proc = new Subprocess.newv(new string[] { "tar", "-cJf", @"../$(manifest.name)-$(manifest.version).usmc", "."}, SubprocessFlags.INHERIT_FDS);
+    return proc.wait_check() ? 0 : 254;
+
+    //  var parent_working_dir = GLib.File.new_for_path (".");
+
+    //  // Create the tar.gz archive named according the the first argument.
+    //  Archive.Write archive = new Archive.Write ();
+    //  archive.add_filter_xz();
+    //  archive.set_format_pax_restricted ();
+    //  archive.open_filename (@"../$(manifest.name)-$(manifest.version).usmc");
+
+    //  var files = new Invercargill.Fifo<string>();
+    //  Invercargill.directory(".").iterate(d => files.push(d));
+
+    //  // Add all the other arguments into the archive
+    //  foreach (var path in files) {
+    //      var file = GLib.File.new_for_path (path);
+    //      try {
+    //          GLib.FileInfo file_info = file.query_info (GLib.FileAttribute.STANDARD_SIZE, GLib.FileQueryInfoFlags.NONE);
+    //          FileInputStream input_stream = file.read ();
+    //          DataInputStream data_input_stream = new DataInputStream (input_stream);
+
+    //          // Add an entry to the archive
+    //          Archive.Entry entry = new Archive.Entry ();
+    //          entry.set_pathname (parent_working_dir.get_relative_path (file));
+    //          entry.set_size ((Archive.int64_t)file_info.get_size ());
+    //          entry.set_filetype ((uint)Posix.S_IFREG);
+    //          entry.set_perm (0644);
+    //          if (archive.write_header (entry) != Archive.Result.OK) {
+    //              critical ("Error writing '%s': %s (%d)", file.get_path (), archive.error_string (), archive.errno ());
+    //              continue;
+    //          }
+
+    //          // Add the actual content of the file
+    //          size_t bytes_read;
+    //          uint8[] buffer = new uint8[64];
+    //          while (data_input_stream.read_all (buffer, out bytes_read)) {
+    //              if (bytes_read <= 0) {
+    //                  break;
+    //              }
+
+    //              archive.write_data(buffer[:bytes_read]);
+    //          }
+    //      } catch (Error e) {
+    //          critical (e.message);
+    //      }
+    //  }
+
+    //  if (archive.close () != Archive.Result.OK) {
+    //      error ("Error : %s (%d)", archive.error_string (), archive.errno ());
+    //  }
+
     return 0;
 }