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batDigest.ml
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batDigest.ml
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(*
* ExtDigest - Additional functions for message digests
* Copyright (C) 1996 Xavier Leroy, INRIA Rocquencourt
* Copyright (C) 2009 David Teller, LIFO, Universite d'Orleans
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version,
* with the special exception on linking described in file LICENSE.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
open BatIO
(*Imported from [Digest.input] -- the functions used take advantage of
[BatIO.input] rather than [in_channel]*)
let input inp =
let digest = String.create 16 in
let _ = really_input inp digest 0 16 in
digest
let output = BatIO.nwrite
let channel inp len = (*TODO: Make efficient*)
if len >= 0 then
let buf = String.create len in
let _ = BatIO.really_input inp buf 0 len in
Digest.string buf
else Digest.channel (BatIO.to_input_channel inp) len