Rewrite virt-resize in OCaml.

[libguestfs.git] / resize / progress.ml

diff --git a/resize/progress.ml b/resize/progress.ml
new file mode 100644 (file)
index 0000000..a4eff0f
--- /dev/null
+++ b/resize/progress.ml
@@ -0,0 +1,49 @@
+(* virt-resize
+ * Copyright (C) 2010-2011 Red Hat Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *)
+
+open Printf
+
+open Utils
+
+module G = Guestfs
+
+let set_up_progress_bar (g : Guestfs.guestfs) =
+  let progress_callback g event evh buf array =
+    if event = G.EVENT_PROGRESS && Array.length array >= 4 then (
+      (*let proc_nr = array.(0)
+      and serial = array.(1)*)
+      let position = array.(2)
+      and total = array.(3) in
+
+      let ratio =
+        if total <> 0L then Int64.to_float position /. Int64.to_float total
+        else 0. in
+      let ratio =
+        if ratio < 0. then 0. else if ratio > 1. then 1. else ratio in
+
+      let dots = int_of_float (ratio *. 72.) in
+
+      print_string "[";
+      for i = 0 to dots-1 do print_char '#' done;
+      for i = dots to 71 do print_char '-' done;
+      print_string "]\r";
+      if ratio = 1. then print_string "\n";
+      flush stdout
+    )
+  in
+  ignore (g#set_event_callback progress_callback [G.EVENT_PROGRESS])