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-rw-r--r--lib/uninorm/u-normcoll.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/lib/uninorm/u-normcoll.h b/lib/uninorm/u-normcoll.h
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+/* Locale dependent, normalization insensitive comparison of Unicode strings.
+ Copyright (C) 2009 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 <http://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;
+}