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Diffstat (limited to 'newlib/libc/stdlib/wcstoumax.c')
| -rw-r--r-- | newlib/libc/stdlib/wcstoumax.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/newlib/libc/stdlib/wcstoumax.c b/newlib/libc/stdlib/wcstoumax.c new file mode 100644 index 000000000..17b5275fa --- /dev/null +++ b/newlib/libc/stdlib/wcstoumax.c @@ -0,0 +1,157 @@ +/*- + * Copyright (c) 1992, 1993 + * The Regents of the University of California. 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. + * 3. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. + */ + +#include <sys/cdefs.h> +#if 0 +#if defined(LIBC_SCCS) && !defined(lint) +static char sccsid[] = "from @(#)strtoul.c 8.1 (Berkeley) 6/4/93"; +#endif /* LIBC_SCCS and not lint */ +__FBSDID("FreeBSD: src/lib/libc/stdlib/strtoumax.c,v 1.8 2002/09/06 11:23:59 tjr Exp "); +#endif +__FBSDID("$FreeBSD: head/lib/libc/locale/wcstoumax.c 314436 2017-02-28 23:42:47Z imp $"); + +#include <errno.h> +#include <inttypes.h> +#include <stdlib.h> +#include <wchar.h> +#include <wctype.h> +#include <stdint.h> +#include <reent.h> +#include "../locale/setlocale.h" + +/* + * Convert a wide character string to a uintmax_t integer. + */ + +/* + *Reentrant version of wcstoumax. + */ +static uintmax_t +_wcstoumax_l(struct _reent *rptr,const wchar_t * __restrict nptr, + wchar_t ** __restrict endptr, int base, locale_t loc) +{ + const wchar_t *s = nptr; + uintmax_t acc; + wchar_t c; + uintmax_t cutoff; + int neg = 0, any, cutlim; + + /* + * See strtoimax for comments as to the logic used. + */ + do { + c = *s++; + } while (iswspace_l(c, loc)); + if (c == L'-') { + neg = 1; + c = *s++; + } else { + neg = 0; + if (c == L'+') + c = *s++; + } + if ((base == 0 || base == 16) && + c == L'0' && (*s == L'x' || *s == L'X')) { + c = s[1]; + s += 2; + base = 16; + } + if (base == 0) + base = c == L'0' ? 8 : 10; + acc = any = 0; + if (base < 2 || base > 36) + goto noconv; + + cutoff = UINTMAX_MAX / base; + cutlim = UINTMAX_MAX % base; + for ( ; ; c = *s++) { +#ifdef notyet + if (iswdigit_l(c, loc)) + c = digittoint_l(c, loc); + else +#endif + if (c >= L'0' && c <= L'9') + c -= L'0'; + else if (c >= L'A' && c <= L'Z') + c -= L'A' - 10; + else if (c >= L'a' && c <= L'z') + c -= L'a' - 10; + else + break; + if (c >= base) + break; + if (any < 0 || acc > cutoff || (acc == cutoff && c > cutlim)) + any = -1; + else { + any = 1; + acc *= base; + acc += c; + } + } + if (any < 0) { + acc = UINTMAX_MAX; + rptr->_errno = ERANGE; + } else if (!any) { +noconv: + rptr->_errno = EINVAL; + } else if (neg) + acc = -acc; + if (endptr != NULL) + *endptr = (wchar_t *)(any ? s - 1 : nptr); + return (acc); +} + +uintmax_t +_wcstoumax_r(struct _reent *rptr, const wchar_t *__restrict nptr, + wchar_t **__restrict endptr, int base) +{ + return _wcstoumax_l(rptr, nptr, endptr, base, __get_current_locale()); +} + +#ifndef _REENT_ONLY + +uintmax_t +wcstoumax_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, + int base, locale_t loc) +{ + return _wcstoumax_l(_REENT, nptr, endptr, base, loc); +} + +uintmax_t +wcstoumax(const wchar_t* __restrict nptr, wchar_t** __restrict endptr, int base) +{ + return _wcstoumax_l(_REENT, nptr, endptr, base, __get_current_locale()); +} + +#endif |