1 files changed, 64 insertions, 0 deletions
diff --git a/src/glib-compat.c b/src/glib-compat.c
index 49edf73..41a7f52 100644
--- a/src/glib-compat.c
+++ b/src/glib-compat.c
@@ -19,11 +19,75 @@
 #include "config.h"
 
 #include <string.h>
+#include <glib/gi18n.h>
 
 #include "glib-compat.h"
 
 #if !GLIB_CHECK_VERSION(2,30,0)
 G_DEFINE_BOXED_TYPE (GMainContext, spice_main_context, g_main_context_ref, g_main_context_unref)
+
+#define KILOBYTE_FACTOR (G_GOFFSET_CONSTANT (1000))
+#define MEGABYTE_FACTOR (KILOBYTE_FACTOR * KILOBYTE_FACTOR)
+#define GIGABYTE_FACTOR (MEGABYTE_FACTOR * KILOBYTE_FACTOR)
+#define TERABYTE_FACTOR (GIGABYTE_FACTOR * KILOBYTE_FACTOR)
+#define PETABYTE_FACTOR (TERABYTE_FACTOR * KILOBYTE_FACTOR)
+#define EXABYTE_FACTOR  (PETABYTE_FACTOR * KILOBYTE_FACTOR)
+
+/**
+ * g_format_size:
+ * @size: a size in bytes
+ *
+ * Formats a size (for example the size of a file) into a human readable
+ * string.  Sizes are rounded to the nearest size prefix (kB, MB, GB)
+ * and are displayed rounded to the nearest tenth. E.g. the file size
+ * 3292528 bytes will be converted into the string "3.2 MB".
+ *
+ * The prefix units base is 1000 (i.e. 1 kB is 1000 bytes).
+ *
+ * This string should be freed with g_free() when not needed any longer.
+ *
+ * See g_format_size_full() for more options about how the size might be
+ * formatted.
+ *
+ * Returns: a newly-allocated formatted string containing a human readable
+ *     file size
+ *
+ * Since: 2.30
+ */
+gchar *
+g_format_size (guint64 size)
+{
+  GString *string;
+
+  string = g_string_new (NULL);
+
+    if (size < KILOBYTE_FACTOR)
+      {
+        g_string_printf (string,
+                         g_dngettext(GETTEXT_PACKAGE, "%u byte", "%u bytes", (guint) size),
+                         (guint) size);
+      }
+
+    else if (size < MEGABYTE_FACTOR)
+      g_string_printf (string, _("%.1f kB"), (gdouble) size / (gdouble) KILOBYTE_FACTOR);
+
+    else if (size < GIGABYTE_FACTOR)
+      g_string_printf (string, _("%.1f MB"), (gdouble) size / (gdouble) MEGABYTE_FACTOR);
+
+    else if (size < TERABYTE_FACTOR)
+      g_string_printf (string, _("%.1f GB"), (gdouble) size / (gdouble) GIGABYTE_FACTOR);
+    else if (size < PETABYTE_FACTOR)
+      g_string_printf (string, _("%.1f TB"), (gdouble) size / (gdouble) TERABYTE_FACTOR);
+
+    else if (size < EXABYTE_FACTOR)
+      g_string_printf (string, _("%.1f PB"), (gdouble) size / (gdouble) PETABYTE_FACTOR);
+
+    else
+      g_string_printf (string, _("%.1f EB"), (gdouble) size / (gdouble) EXABYTE_FACTOR);
+
+  return g_string_free (string, FALSE);
+}
+
 #endif