1 /* mbscasecmp - case-insensitive multibyte string comparison. */
3 /* Copyright (C) 2009 Free Software Foundation, Inc.
5 This file is part of GNU Bash, the Bourne Again SHell.
7 Bash is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 Bash is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Bash. If not, see <http://www.gnu.org/licenses/>.
23 #if !defined (HAVE_MBSCASECMP) && defined (HANDLE_MULTIBYTE)
32 /* Compare MBS1 and MBS2 without regard to case. */
34 mbscasecmp (mbs1, mbs2)
39 wchar_t c1, c2, l1, l2;
42 /* Reset multibyte characters to their initial state. */
43 (void) mblen ((char *) NULL, 0);
47 len1 = mbtowc (&c1, mbs1, MB_CUR_MAX);
48 len2 = mbtowc (&c2, mbs2, MB_CUR_MAX);
51 return len2 == 0 ? 0 : -1;
54 else if (len1 > 0 && len2 < 0)
56 else if (len1 < 0 && len2 > 0)
58 else if (len1 < 0 && len2 < 0)
62 return (len1 == len2 ? memcmp (mbs1, mbs2, len1)
63 : ((len1 < len2) ? (memcmp (mbs1, mbs2, len1) > 0 ? 1 : -1)
64 : (memcmp (mbs1, mbs2, len2) >= 0 ? 1 : -1)));