| /* Locale dependent, normalization insensitive comparison of Unicode strings. |
| Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| Written by Bruno Haible <bruno@clisp.org>, 2009. |
| |
| This program 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 3 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 |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public License |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| |
| int |
| FUNC (const UNIT *s1, size_t n1, const UNIT *s2, size_t n2, |
| uninorm_t nf, int *resultp) |
| { |
| char buf1[2048]; |
| char buf2[2048]; |
| char *transformed1; |
| size_t transformed1_length; |
| char *transformed2; |
| size_t transformed2_length; |
| int cmp; |
| |
| /* Normalize and transform S1. */ |
| transformed1_length = sizeof (buf1); |
| transformed1 = U_NORMXFRM (s1, n1, nf, buf1, &transformed1_length); |
| if (transformed1 == NULL) |
| /* errno is set here. */ |
| return -1; |
| |
| /* Normalize and transform S2. */ |
| transformed2_length = sizeof (buf2); |
| transformed2 = U_NORMXFRM (s2, n2, nf, buf2, &transformed2_length); |
| if (transformed2 == NULL) |
| { |
| if (transformed1 != buf1) |
| { |
| int saved_errno = errno; |
| free (transformed1); |
| errno = saved_errno; |
| } |
| return -1; |
| } |
| |
| /* Compare the transformed strings. */ |
| cmp = memcmp2 (transformed1, transformed1_length, |
| transformed2, transformed2_length); |
| if (cmp < 0) |
| cmp = -1; |
| else if (cmp > 0) |
| cmp = 1; |
| |
| if (transformed2 != buf2) |
| free (transformed2); |
| if (transformed1 != buf1) |
| free (transformed1); |
| *resultp = cmp; |
| return 0; |
| } |