diff options
Diffstat (limited to 'lib/libc/string/strcoll.c')
| -rw-r--r-- | lib/libc/string/strcoll.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/lib/libc/string/strcoll.c b/lib/libc/string/strcoll.c new file mode 100644 index 0000000..8add885 --- /dev/null +++ b/lib/libc/string/strcoll.c @@ -0,0 +1,102 @@ +/*- + * 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" + +#include <stdio.h> + +int +strcoll_l(const char *s1, const char *s2, locale_t locale) +{ + int len, len2, prim, prim2, sec, sec2, ret, ret2; + const char *t, *t2; + char *tt, *tt2; + FIX_LOCALE(locale); + struct xlocale_collate *table = + (struct xlocale_collate*)locale->components[XLC_COLLATE]; + + if (table->__collate_load_error) + return strcmp(s1, s2); + + len = len2 = 1; + ret = ret2 = 0; + if (table->__collate_substitute_nontrivial) { + t = tt = __collate_substitute(table, s1); + t2 = tt2 = __collate_substitute(table, s2); + } else { + tt = tt2 = NULL; + t = s1; + t2 = s2; + } + while(*t && *t2) { + prim = prim2 = 0; + while(*t && !prim) { + __collate_lookup(table, t, &len, &prim, &sec); + t += len; + } + while(*t2 && !prim2) { + __collate_lookup(table, t2, &len2, &prim2, &sec2); + t2 += len2; + } + if(!prim || !prim2) + break; + if(prim != prim2) { + ret = prim - prim2; + goto end; + } + if(!ret2) + ret2 = sec - sec2; + } + if(!*t && *t2) + ret = -(int)((u_char)*t2); + else if(*t && !*t2) + ret = (u_char)*t; + else if(!*t && !*t2) + ret = ret2; + end: + free(tt); + free(tt2); + + return ret; +} + +int +strcoll(const char *s1, const char *s2) +{ + return strcoll_l(s1, s2, __get_locale()); +} + |
