[PATCH 4/4] Importing wcstoumax inttypes method from FreeBSD.

[PATCH 4/4] Importing wcstoumax inttypes method from FreeBSD.

[Aditya Upadhyay]

---
 newlib/libc/include/inttypes.h |   2 +
 newlib/libc/stdlib/Makefile.am |   1 +
 newlib/libc/stdlib/wcstoumax.c | 155 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 158 insertions(+)
 create mode 100644 newlib/libc/stdlib/wcstoumax.c

diff --git a/newlib/libc/include/inttypes.h b/newlib/libc/include/inttypes.h
index 8ec05fb..694ba8f 100644
--- a/newlib/libc/include/inttypes.h
+++ b/newlib/libc/include/inttypes.h
@@ -329,11 +329,13 @@ extern uintmax_t _strtoumax_r(struct _reent *, const char *__restrict, char **__
 extern intmax_t  wcstoimax(const wchar_t *__restrict, wchar_t **__restrict, int);
 extern intmax_t  _wcstoimax_r(struct _reent *, const wchar_t *__restrict, wchar_t **__restrict, int);
 extern uintmax_t wcstoumax(const wchar_t *__restrict, wchar_t **__restrict, int);
+extern uintmax_t _wcstoumax_r(struct _reent *, const wchar_t *__restrict, wchar_t **__restrict, int);
 
 #if __BSD_VISIBLE
 extern intmax_t  strtoimax_l(const char *__restrict, char **_restrict, int, locale_t);
 extern uintmax_t strtoumax_l(const char *__restrict, char **_restrict, int, locale_t);
 extern intmax_t  wcstoimax_l(const wchar_t *__restrict, wchar_t **_restrict, int, locale_t);
+extern uintmax_t wcstoumax_l(const wchar_t *__restrict, wchar_t **_restrict, int, locale_t);
 #endif
 
 #ifdef __cplusplus
diff --git a/newlib/libc/stdlib/Makefile.am b/newlib/libc/stdlib/Makefile.am
index b687c0f..f9bab0b 100644
--- a/newlib/libc/stdlib/Makefile.am
+++ b/newlib/libc/stdlib/Makefile.am
@@ -69,6 +69,7 @@ GENERAL_SOURCES = \
 	wcstoimax.c	\
 	wcstol.c	\
 	wcstoul.c	\
+	wcstoumax.c	\
 	wcstombs.c	\
 	wcstombs_r.c	\
 	wctomb.c	\
diff --git a/newlib/libc/stdlib/wcstoumax.c b/newlib/libc/stdlib/wcstoumax.c
new file mode 100644
index 0000000..d797c9c
--- /dev/null
+++ b/newlib/libc/stdlib/wcstoumax.c
@@ -0,0 +1,155 @@
+/*-
+ * 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
-- 
2.7.4