1 /* Compare two wide strings using the current locale.
2 Copyright (C) 2011 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2011.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 wcscoll (const wchar_t *s1, const wchar_t *s2)
27 int saved_errno = errno;
29 /* Convert s1 to a multibyte string, trying to avoid malloc(). */
33 ret = wcstombs (mbbuf1, s1, sizeof (mbbuf1));
34 if (ret == (size_t)-1)
36 if (ret < sizeof (mbbuf1))
40 size_t need = wcstombs (NULL, s1, 0);
41 if (need == (size_t)-1)
43 mbs1 = (char *) malloc (need + 1);
46 ret = wcstombs (mbs1, s1, need + 1);
52 /* Convert s2 to a multibyte string, trying to avoid malloc(). */
56 ret = wcstombs (mbbuf2, s2, sizeof (mbbuf2));
57 if (ret == (size_t)-1)
59 if (ret < sizeof (mbbuf2))
63 size_t need = wcstombs (NULL, s2, 0);
64 if (need == (size_t)-1)
66 mbs2 = (char *) malloc (need + 1);
69 ret = wcstombs (mbs2, s2, need + 1);
75 /* No error so far. */
79 /* Compare the two multibyte strings. */
81 int result = strcoll (mbs1, mbs2);
85 int saved_errno = errno;
91 int saved_errno = errno;