New tool: virt-sparsify to make disk images sparse.

[libguestfs.git] / sparsify / progress_c.c

diff --git a/sparsify/progress_c.c b/sparsify/progress_c.c
new file mode 100644 (file)
index 0000000..046ed34
--- /dev/null
+++ b/sparsify/progress_c.c
@@ -0,0 +1,105 @@
+/* virt-sparsify - interface to progress bar mini library
+ * Copyright (C) 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <locale.h>
+
+#include <caml/alloc.h>
+#include <caml/custom.h>
+#include <caml/fail.h>
+#include <caml/memory.h>
+#include <caml/mlvalues.h>
+
+#include "progress.h"
+
+#define Bar_val(v) (*((struct progress_bar **)Data_custom_val(v)))
+
+static void
+progress_bar_finalize (value barv)
+{
+  struct progress_bar *bar = Bar_val (barv);
+
+  if (bar)
+    progress_bar_free (bar);
+}
+
+static struct custom_operations progress_bar_custom_operations = {
+  (char *) "progress_bar_custom_operations",
+  progress_bar_finalize,
+  custom_compare_default,
+  custom_hash_default,
+  custom_serialize_default,
+  custom_deserialize_default
+};
+
+value
+virt_sparsify_progress_bar_init (value machine_readablev)
+{
+  CAMLparam1 (machine_readablev);
+  CAMLlocal1 (barv);
+  struct progress_bar *bar;
+  int machine_readable = Bool_val (machine_readablev);
+  unsigned flags = 0;
+
+  /* XXX Have to do this to get nl_langinfo to work properly.  However
+   * we should really only call this from main.
+   */
+  setlocale (LC_ALL, "");
+
+  if (machine_readable)
+    flags |= PROGRESS_BAR_MACHINE_READABLE;
+  bar = progress_bar_init (flags);
+  if (bar == NULL)
+    caml_raise_out_of_memory ();
+
+  barv = caml_alloc_custom (&progress_bar_custom_operations,
+                            sizeof (struct progress_bar *), 0, 1);
+  Bar_val (barv) = bar;
+
+  CAMLreturn (barv);
+}
+
+value
+virt_sparsify_progress_bar_reset (value barv)
+{
+  CAMLparam1 (barv);
+  struct progress_bar *bar = Bar_val (barv);
+
+  progress_bar_reset (bar);
+
+  CAMLreturn (Val_unit);
+}
+
+value
+virt_sparsify_progress_bar_set (value barv,
+                                value positionv, value totalv)
+{
+  CAMLparam3 (barv, positionv, totalv);
+  struct progress_bar *bar = Bar_val (barv);
+  uint64_t position = Int64_val (positionv);
+  uint64_t total = Int64_val (totalv);
+
+  progress_bar_set (bar, position, total);
+
+  CAMLreturn (Val_unit);
+}