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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(*i $Id: alpha.ml 5920 2004-07-16 20:01:26Z herbelin $ i*)
let norm_char c = match Char.uppercase c with
| '\192'..'\198' -> 'A'
| '\199' -> 'C'
| '\200'..'\203' -> 'E'
| '\204'..'\207' -> 'I'
| '\209' -> 'N'
| '\210'..'\214' -> 'O'
| '\217'..'\220' -> 'U'
| '\221' -> 'Y'
| c -> c
let norm_string s =
let u = String.copy s in
for i = 0 to String.length s - 1 do
u.[i] <- norm_char s.[i]
done;
u
let compare_char c1 c2 = match norm_char c1, norm_char c2 with
| ('A'..'Z' as c1), ('A'..'Z' as c2) -> compare c1 c2
| 'A'..'Z', _ -> -1
| _, 'A'..'Z' -> 1
| c1, c2 -> compare c1 c2
let compare_string s1 s2 =
let n1 = String.length s1 in
let n2 = String.length s2 in
let rec cmp i =
if i == n1 || i == n2 then
n1 - n2
else
let c = compare_char s1.[i] s2.[i] in
if c == 0 then cmp (succ i) else c
in
cmp 0
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