diff options
Diffstat (limited to 'lib/libc/string/strxfrm.c')
-rw-r--r-- | lib/libc/string/strxfrm.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/libc/string/strxfrm.c b/lib/libc/string/strxfrm.c new file mode 100644 index 0000000..b758b0c --- /dev/null +++ b/lib/libc/string/strxfrm.c @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua> + * at Electronni Visti IA, Kiev, Ukraine. + * All rights reserved. + * + * Copyright (c) 2011 The FreeBSD Foundation + * All rights reserved. + * Portions of this software were developed by David Chisnall + * under sponsorship from the FreeBSD Foundation. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <stdlib.h> +#include <string.h> +#include "collate.h" + +size_t +strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t loc); +size_t +strxfrm(char * __restrict dest, const char * __restrict src, size_t len) +{ + return strxfrm_l(dest, src, len, __get_locale()); +} + +size_t +strxfrm_l(char * __restrict dest, const char * __restrict src, size_t len, locale_t locale) +{ + int prim, sec, l; + size_t slen; + char *s, *ss; + FIX_LOCALE(locale); + struct xlocale_collate *table = + (struct xlocale_collate*)locale->components[XLC_COLLATE]; + + if (!*src) { + if (len > 0) + *dest = '\0'; + return 0; + } + + if (table->__collate_load_error) + return strlcpy(dest, src, len); + + slen = 0; + prim = sec = 0; + ss = s = __collate_substitute(table, src); + while (*s) { + while (*s && !prim) { + __collate_lookup(table, s, &l, &prim, &sec); + s += l; + } + if (prim) { + if (len > 1) { + *dest++ = (char)prim; + len--; + } + slen++; + prim = 0; + } + } + free(ss); + if (len > 0) + *dest = '\0'; + + return slen; +} |