X-Git-Url: http://git.annexia.org/?a=blobdiff_plain;ds=inline;f=utils.ml;h=a3eca86bc72b2a461b9825d3e1951c0b25bae9ab;hb=b07102fda0034da5840a9f33bd6d404a195b8cc9;hp=8f7ce3a87bf6ddf56668a42ab4d1e4ce6333ce43;hpb=bbfe03c47f1d7f03c3e6c0cab9e4f500f588c80a;p=guestfs-browser.git

diff --git a/utils.ml b/utils.ml
index 8f7ce3a..a3eca86 100644
--- a/utils.ml
+++ b/utils.ml
@@ -16,17 +16,47 @@
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *)
 
-type ('a, 'b) choice = Either of 'a | Or of 'b
+open Printf
 
-let verbose = ref true (* XXX settable *)
+let (+^) = Int64.add
+let (-^) = Int64.sub
+let ( *^ ) = Int64.mul
+let (/^) = Int64.div
+
+type ('a, 'b) either = Left of 'a | Right of 'b
+
+let verbose = ref false
+let set_verbose_flag () = verbose := true
+let verbose () = !verbose
+
+let write_flag = ref false
+let set_write_flag () = write_flag := true
+let write_flag () = !write_flag
 
 let debug fs =
-  let f str = if !verbose then (prerr_string str; prerr_newline ()) in
+  let f str =
+    if verbose () then (
+      prerr_string Config.package;
+      prerr_string ": ";
+      prerr_string str;
+      prerr_newline ()
+    )
+  in
   ksprintf f fs
 
 let failwith fs =
   let f str =
-    if !verbose then (prerr_string str; prerr_newline ());
+    if verbose () then (prerr_string str; prerr_newline ());
     raise (Failure str)
   in
   ksprintf f fs
+
+let utf8_rarrow = "\xe2\x86\x92"
+
+let human_size_1k i =
+  if i < 1024L then
+    sprintf "%LdK" i
+  else if i < 1024L *^ 1024L then
+    sprintf "%.1fM" (Int64.to_float i /. 1024.)
+  else
+    sprintf "%.1fG" (Int64.to_float i /. 1024. /. 1024.)