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Diffstat (limited to 'lib/unicase/ulc-casecmp.c')
-rw-r--r-- | lib/unicase/ulc-casecmp.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/unicase/ulc-casecmp.c b/lib/unicase/ulc-casecmp.c new file mode 100644 index 0000000..e071021 --- /dev/null +++ b/lib/unicase/ulc-casecmp.c @@ -0,0 +1,74 @@ +/* Case and normalization insensitive comparison of 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/>. */ + +#include <config.h> + +/* Specification. */ +#include "unicase.h" + +#include <errno.h> +#include <stdlib.h> + +#include "minmax.h" +#include "uninorm.h" +#include "uniconv.h" +#include "unistr.h" + +static uint8_t * +ulc_u8_casefold (const char *s, size_t n, const char *iso639_language, + uninorm_t nf, + uint8_t *resultbuf, size_t *lengthp) +{ + uint8_t convbuf[2048 / sizeof (uint8_t)]; + uint8_t *conv; + size_t conv_length; + uint8_t *result; + + /* Convert the string to UTF-8. */ + conv_length = sizeof (convbuf) / sizeof (uint8_t); + conv = + u8_conv_from_encoding (locale_charset (), iconveh_error, s, n, NULL, + convbuf, &conv_length); + if (conv == NULL) + /* errno is set here. */ + return NULL; + + /* Case-fold and normalize. */ + result = u8_casefold (conv, conv_length, iso639_language, nf, + resultbuf, lengthp); + if (result == NULL) + { + if (conv != convbuf) + { + int saved_errno = errno; + free (conv); + errno = saved_errno; + } + return NULL; + } + + if (conv != convbuf) + free (conv); + return result; +} + +#define FUNC ulc_casecmp +#define UNIT uint8_t +#define SRC_UNIT char +#define U_CASEFOLD ulc_u8_casefold +#define U_CMP2 u8_cmp2 +#include "u-casecmp.h" |