1 files changed, 54 insertions, 0 deletions
diff --git a/sparsify/progress.ml b/sparsify/progress.ml
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+(* virt-sparsify
+ * 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
+
+type progress_bar
+external progress_bar_init : machine_readable:bool -> progress_bar
+  = "virt_sparsify_progress_bar_init"
+external progress_bar_reset : progress_bar -> unit
+  = "virt_sparsify_progress_bar_reset"
+external progress_bar_set : progress_bar -> int64 -> int64 -> unit
+  = "virt_sparsify_progress_bar_set"
+
+let set_up_progress_bar ?(machine_readable = false) (g : Guestfs.guestfs) =
+  (* Initialize the C mini library. *)
+  let bar = progress_bar_init ~machine_readable in
+
+  (* Reset the progress bar before every libguestfs function. *)
+  let enter_callback g event evh buf array =
+    if event = G.EVENT_ENTER then
+      progress_bar_reset bar
+  in
+
+  (* A progress event: move the progress bar. *)
+  let progress_callback g event evh buf array =
+    if event = G.EVENT_PROGRESS && Array.length array >= 4 then (
+      let position = array.(2)
+      and total = array.(3) in
+
+      progress_bar_set bar position total
+    )
+  in
+
+  ignore (g#set_event_callback enter_callback [G.EVENT_ENTER]);
+  ignore (g#set_event_callback progress_callback [G.EVENT_PROGRESS])