3d7a0d9b08
This replaces a partial set of non-functional functions with a complete set of functions, all of which actually work. This requires us to implement mbsnrtowcs and wcsnrtombs which completes the set of what we need for libc++. The mbsnrtowcs is basically a copy & paste of wcsnrtombs, but I'm going to go straight to looking at using the OpenBSD UTF-8 implementation rather than keep polishing our home-grown turd. (This patch also opportunistically switches us over to upstream btowc, mbrlen, and wctob, since they're all trivially expressed in terms of other functions.) Change-Id: I0f81443840de0f1aa73b96f0b51988976793a323
154 lines
3.7 KiB
C
154 lines
3.7 KiB
C
/* $OpenBSD: _wcstod.h,v 1.2 2013/06/02 15:22:20 matthew Exp $ */
|
|
/* $NetBSD: wcstod.c,v 1.4 2001/10/28 12:08:43 yamt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c)1999, 2000, 2001 Citrus Project,
|
|
* All rights reserved.
|
|
*
|
|
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
|
|
*
|
|
* $Citrus: xpg4dl/FreeBSD/lib/libc/locale/wcstod.c,v 1.2 2001/09/27 16:23:57 yamt Exp $
|
|
*/
|
|
|
|
/*
|
|
* function template for wcstof, wcstod and wcstold.
|
|
*
|
|
* parameters:
|
|
* FUNCNAME : function name
|
|
* float_type : return type
|
|
* STRTOD_FUNC : conversion function
|
|
*/
|
|
|
|
float_type
|
|
FUNCNAME(const wchar_t *nptr, wchar_t **endptr)
|
|
{
|
|
const wchar_t *src;
|
|
size_t size;
|
|
const wchar_t *start;
|
|
const wchar_t *aftersign;
|
|
|
|
/*
|
|
* check length of string and call strtod
|
|
*/
|
|
src = nptr;
|
|
|
|
/* skip space first */
|
|
while (iswspace(*src)) {
|
|
src++;
|
|
}
|
|
|
|
/* get length of string */
|
|
start = src;
|
|
if (*src && wcschr(L"+-", *src))
|
|
src++;
|
|
aftersign = src;
|
|
if (wcsncasecmp(src, L"inf", 3) == 0) {
|
|
src += 3;
|
|
if (wcsncasecmp(src, L"inity", 5) == 0)
|
|
src += 5;
|
|
goto match;
|
|
}
|
|
if (wcsncasecmp(src, L"nan", 3) == 0) {
|
|
src += 3;
|
|
if (*src == L'(') {
|
|
size = 1;
|
|
while (src[size] != L'\0' && src[size] != L')')
|
|
size++;
|
|
if (src[size] == L')')
|
|
src += size + 1;
|
|
}
|
|
goto match;
|
|
}
|
|
size = wcsspn(src, L"0123456789");
|
|
src += size;
|
|
if (*src == L'.') {/* XXX use localeconv */
|
|
src++;
|
|
size = wcsspn(src, L"0123456789");
|
|
src += size;
|
|
}
|
|
if (*src && wcschr(L"Ee", *src)) {
|
|
src++;
|
|
if (*src && wcschr(L"+-", *src))
|
|
src++;
|
|
size = wcsspn(src, L"0123456789");
|
|
src += size;
|
|
}
|
|
match:
|
|
size = src - start;
|
|
|
|
/*
|
|
* convert to a char-string and pass it to strtod.
|
|
*/
|
|
if (src > aftersign) {
|
|
mbstate_t st;
|
|
char *buf;
|
|
char *end;
|
|
const wchar_t *s;
|
|
size_t size_converted;
|
|
float_type result;
|
|
size_t bufsize;
|
|
|
|
s = start;
|
|
memset(&st, 0, sizeof(st));
|
|
bufsize = wcsnrtombs(NULL, &s, size, 0, &st);
|
|
|
|
buf = malloc(bufsize + 1);
|
|
if (!buf) {
|
|
errno = ENOMEM; /* XXX */
|
|
goto fail;
|
|
}
|
|
|
|
s = start;
|
|
memset(&st, 0, sizeof(st));
|
|
size_converted = wcsnrtombs(buf, &s, size, bufsize, &st);
|
|
if (size_converted != bufsize) {
|
|
/* XXX should not happen */
|
|
free(buf);
|
|
errno = EILSEQ;
|
|
goto fail;
|
|
}
|
|
|
|
buf[bufsize] = 0;
|
|
result = STRTOD_FUNC(buf, &end);
|
|
|
|
if (endptr) {
|
|
const char *s = buf;
|
|
memset(&st, 0, sizeof(st));
|
|
size = mbsnrtowcs(NULL, &s, end - buf, 0, &st);
|
|
|
|
/* LINTED bad interface */
|
|
*endptr = (wchar_t*)start + size;
|
|
}
|
|
|
|
free(buf);
|
|
|
|
return result;
|
|
}
|
|
|
|
fail:
|
|
if (endptr)
|
|
/* LINTED bad interface */
|
|
*endptr = (wchar_t*)nptr;
|
|
|
|
return 0;
|
|
}
|