d915a14ef0
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
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* Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
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* at Electronni Visti IA, Kiev, Ukraine.
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* All rights reserved.
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*
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* Copyright (c) 2011 The FreeBSD Foundation
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* All rights reserved.
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* Portions of this software were developed by David Chisnall
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <wchar.h>
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#include "collate.h"
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/*
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* In order to properly handle multibyte locales, its easiest to just
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* convert to wide characters and then use wcscoll. However if an
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* error occurs, we gracefully fall back to simple strcmp. Caller
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* should check errno.
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*/
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int
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strcoll_l(const char *s, const char *s2, locale_t locale)
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{
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int ret;
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wchar_t *t1 = NULL, *t2 = NULL;
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wchar_t *w1 = NULL, *w2 = NULL;
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const char *cs1, *cs2;
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mbstate_t mbs1;
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mbstate_t mbs2;
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size_t sz1, sz2;
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memset(&mbs1, 0, sizeof (mbstate_t));
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memset(&mbs2, 0, sizeof (mbstate_t));
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/*
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* The mbsrtowcs_l function can set the src pointer to null upon
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* failure, so it should act on a copy to avoid:
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* - sending null pointer to strcmp
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* - having strcoll/strcoll_l change *s or *s2 to null
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*/
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cs1 = s;
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cs2 = s2;
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FIX_LOCALE(locale);
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struct xlocale_collate *table =
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(struct xlocale_collate*)locale->components[XLC_COLLATE];
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if (table->__collate_load_error)
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goto error;
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sz1 = strlen(s) + 1;
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sz2 = strlen(s2) + 1;
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/*
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* Simple assumption: conversion to wide format is strictly
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* reducing, i.e. a single byte (or multibyte character)
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* cannot result in multiple wide characters.
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*/
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if ((t1 = malloc(sz1 * sizeof (wchar_t))) == NULL)
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goto error;
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w1 = t1;
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if ((t2 = malloc(sz2 * sizeof (wchar_t))) == NULL)
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goto error;
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w2 = t2;
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if ((mbsrtowcs_l(w1, &cs1, sz1, &mbs1, locale)) == (size_t)-1)
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goto error;
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if ((mbsrtowcs_l(w2, &cs2, sz2, &mbs2, locale)) == (size_t)-1)
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goto error;
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ret = wcscoll_l(w1, w2, locale);
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free(t1);
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free(t2);
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return (ret);
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error:
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free(t1);
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free(t2);
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return (strcmp(s, s2));
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}
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int
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strcoll(const char *s, const char *s2)
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{
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return strcoll_l(s, s2, __get_locale());
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}
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