newlib: wide char support

git-svn-id: svn://kolibrios.org@6607 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/newlib/libc/stdlib/wcstoull_r.c

@@ -0,0 +1,130 @@
+/*
+  This code is based on wcstoul.c which has the following copyright.
+  It is used to convert a wide string into an unsigned long long.
+  
+  unsigned long long _wcstoull_r (struct _reent *rptr, const wchar_t *s,
+                                  wchar_t **ptr, int base);
+
+*/
+
+/*
+ * Copyright (c) 1990 Regents of the University of California.
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifdef __GNUC__
+
+#define _GNU_SOURCE
+#include <_ansi.h>
+#include <limits.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <errno.h>
+#include <reent.h>
+
+/* Make up for older non-compliant limits.h.  (This is a C99/POSIX function,
+ * and both require ULLONG_MAX in limits.h.)  */
+#if !defined(ULLONG_MAX)
+# define ULLONG_MAX	ULONG_LONG_MAX
+#endif
+
+/*
+ * Convert a wide string to an unsigned long long integer.
+ *
+ * Ignores `locale' stuff.  Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+unsigned long long
+_DEFUN (_wcstoull_r, (rptr, nptr, endptr, base),
+	struct _reent *rptr _AND
+	_CONST wchar_t *nptr _AND
+	wchar_t **endptr _AND
+	int base)
+{
+	register const wchar_t *s = nptr;
+	register unsigned long long acc;
+	register int c;
+	register unsigned long long cutoff;
+	register int neg = 0, any, cutlim;
+
+	if(base < 0  ||  base == 1  ||  base > 36)  {
+		rptr->_errno = EINVAL;
+		return(0ULL);
+	}
+	/*
+	 * See strtol for comments as to the logic used.
+	 */
+	do {
+		c = *s++;
+	} while (iswspace(c));
+	if (c == L'-') {
+		neg = 1;
+		c = *s++;
+	} else 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;
+	cutoff = (unsigned long long)ULLONG_MAX / (unsigned long long)base;
+	cutlim = (unsigned long long)ULLONG_MAX % (unsigned long long)base;
+	for (acc = 0, any = 0;; c = *s++) {
+		if (iswdigit(c))
+			c -= L'0';
+		else if (iswalpha(c))
+			c -= iswupper(c) ? L'A' - 10 : 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 = ULLONG_MAX;
+		rptr->_errno = ERANGE;
+	} else if (neg)
+		acc = -acc;
+	if (endptr != 0)
+		*endptr = (wchar_t *) (any ? s - 1 : nptr);
+	return (acc);
+}
+
+#endif /* __GNUC__ */