Removed bitmap object - don't need to build a bitmap.

[virt-df.git] / diskzip / diskzip_bitmap.ml

diff --git a/diskzip/diskzip_bitmap.ml b/diskzip/diskzip_bitmap.ml
deleted file mode 100644 (file)
index 982c46f..0000000
--- a/diskzip/diskzip_bitmap.ml
+++ /dev/null
@@ -1,108 +0,0 @@
-(* 'diskzip' command for intelligently compressing disk images.
-   (C) Copyright 2007 Richard W.M. Jones, Red Hat Inc.
-   http://libvirt.org/
-
-   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.
- *)
-
-open Int63.Operators
-
-type t = int63 * string array
-
-(* NB: Sys.max_string_length is by no means a 'round' number. *)
-let maxlen = Int63.of_int Sys.max_string_length
-
-let create size =
-  (* Get the size in bytes & round up. *)
-  let sizebytes = (size +^ ~^7) >^> 3 in
-
-  let n = Int63.to_int (sizebytes /^ maxlen) in
-  let overflow = Int63.to_int (sizebytes %^ maxlen) in
-  let zerochar = Char.chr 0 in
-  let array =
-    if overflow <> 0 then
-      Array.init (n+1)
-       (function
-        | i when i = n -> String.make overflow zerochar
-        | _ -> String.make Sys.max_string_length zerochar)
-    else
-      Array.init n (fun _ -> String.make Sys.max_string_length zerochar) in
-  size, array
-
-let mask7 = ~^7
-
-let set (size, t) offset =
-  if offset < Int63.zero || offset >= size then invalid_arg "bitmap";
-  let offset_bytes, offset_bits =
-    offset >^> 3,
-    Int63.to_int (offset &^ mask7) in
-  let offset_strs, offset_in_str =
-    Int63.to_int (offset_bytes /^ maxlen),
-    Int63.to_int (offset_bytes %^ maxlen) in
-  let c = Char.code t.(offset_strs).[offset_in_str] in
-  t.(offset_strs).[offset_in_str] <- Char.chr (c lor (1 lsl offset_bits))
-
-let clear (size, t) offset =
-  if offset < Int63.zero || offset >= size then invalid_arg "bitmap";
-  let offset_bytes, offset_bits =
-    offset >^> 3,
-    Int63.to_int (offset &^ mask7) in
-  let offset_strs, offset_in_str =
-    Int63.to_int (offset_bytes /^ maxlen),
-    Int63.to_int (offset_bytes %^ maxlen) in
-  let c = Char.code t.(offset_strs).[offset_in_str] in
-  t.(offset_strs).[offset_in_str] <-
-    Char.chr (c land (lnot (1 lsl offset_bits)))
-
-let get (size, t) offset =
-  if offset < Int63.zero || offset >= size then invalid_arg "bitmap";
-  let offset_bytes, offset_bits =
-    offset >^> 3,
-    Int63.to_int (offset &^ mask7) in
-  let offset_strs, offset_in_str =
-    Int63.to_int (offset_bytes /^ maxlen),
-    Int63.to_int (offset_bytes %^ maxlen) in
-  let c = Char.code t.(offset_strs).[offset_in_str] in
-  c land (1 lsl offset_bits) <> 0
-
-let set_bool t offset v =
-  (if v then set else clear) t offset
-
-let set_int t offset v =
-  (if v <> 0 then set else clear) t offset
-
-let iter_set f (size, t) =
-  let n = ref Int63.zero in
-  Array.iter (
-    fun str ->
-      let m = ref 0x80 in
-      for i = 0 to String.length str - 1 do
-       let c = Char.code str.[i] in
-       for j = 0 to 7 do
-         let n' = !n in
-         if n' < size then (
-           let b = c land !m <> 0 in
-           let b = f n' b in
-           str.[i] <- Char.chr (if b then c lor !m else c land lnot !m)
-         );
-         n := Int63.succ n';
-         m := !m lsr 1
-       done
-      done
-  ) t
-
-let iter f t =
-  let f i b = f i b; b in
-  iter_set f t