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.
119 lines
3.7 KiB
C
119 lines
3.7 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2002 Tim J. Robbins
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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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <wchar.h>
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#include <wctype.h>
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#include "xlocale_private.h"
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/*
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* Convert a string to a double-precision number.
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*
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* This is the wide-character counterpart of strtod(). So that we do not
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* have to duplicate the code of strtod() here, we convert the supplied
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* wide character string to multibyte and call strtod() on the result.
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* This assumes that the multibyte encoding is compatible with ASCII
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* for at least the digits, radix character and letters.
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*/
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double
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wcstod_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
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locale_t locale)
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{
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static const mbstate_t initial;
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mbstate_t mbs;
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double val;
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char *buf, *end;
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const wchar_t *wcp;
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size_t len;
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size_t spaces;
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FIX_LOCALE(locale);
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wcp = nptr;
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spaces = 0;
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while (iswspace_l(*wcp, locale)) {
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wcp++;
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spaces++;
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}
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/*
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* Convert the supplied numeric wide char. string to multibyte.
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*
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* We could attempt to find the end of the numeric portion of the
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* wide char. string to avoid converting unneeded characters but
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* choose not to bother; optimising the uncommon case where
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* the input string contains a lot of text after the number
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* duplicates a lot of strtod()'s functionality and slows down the
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* most common cases.
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*/
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mbs = initial;
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if ((len = wcsrtombs_l(NULL, &wcp, 0, &mbs, locale)) == (size_t)-1) {
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if (endptr != NULL)
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*endptr = (wchar_t *)nptr;
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return (0.0);
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}
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if ((buf = malloc(len + 1)) == NULL) {
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if (endptr != NULL)
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*endptr = (wchar_t *)nptr;
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return (0.0);
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}
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mbs = initial;
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wcsrtombs_l(buf, &wcp, len + 1, &mbs, locale);
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/* Let strtod() do most of the work for us. */
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val = strtod_l(buf, &end, locale);
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/*
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* We only know where the number ended in the _multibyte_
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* representation of the string. If the caller wants to know
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* where it ended, count multibyte characters to find the
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* corresponding position in the wide char string.
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*/
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if (endptr != NULL) {
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*endptr = (wchar_t *)nptr + (end - buf);
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if (buf != end)
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*endptr += spaces;
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}
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free(buf);
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return (val);
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}
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double
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wcstod(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr)
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{
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return wcstod_l(nptr, endptr, __get_locale());
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}
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