From 341cee15f6be494491855948b60f9eed4b9cf125 Mon Sep 17 00:00:00 2001
From: Tim Kientzle <kientzle@FreeBSD.org>
Date: Mon, 18 Feb 2013 01:55:53 +0000
Subject: [PATCH] Add strtoul() to libstand by copying from libc and clipping
out locale code.
---
lib/libstand/Makefile | 2 +-
lib/libstand/stand.h | 1 +
lib/libstand/strtoul.c | 123 +++++++++++++++++++++++++++++++++++++++++
3 files changed, 125 insertions(+), 1 deletion(-)
create mode 100644 lib/libstand/strtoul.c
diff --git a/lib/libstand/Makefile b/lib/libstand/Makefile
index 807136d116dc..cfc39e918549 100644
--- a/lib/libstand/Makefile
+++ b/lib/libstand/Makefile
@@ -39,7 +39,7 @@ CFLAGS+= -msoft-float -D_STANDALONE
# standalone components and stuff we have modified locally
SRCS+= gzguts.h zutil.h __main.c assert.c bcd.c bswap.c environment.c getopt.c gets.c \
- globals.c pager.c printf.c strdup.c strerror.c strtol.c random.c \
+ globals.c pager.c printf.c strdup.c strerror.c strtol.c strtoul.c random.c \
sbrk.c twiddle.c zalloc.c zalloc_malloc.c
# private (pruned) versions of libc string functions
diff --git a/lib/libstand/stand.h b/lib/libstand/stand.h
index 10bb829c4ced..2a1e9a993276 100644
--- a/lib/libstand/stand.h
+++ b/lib/libstand/stand.h
@@ -261,6 +261,7 @@ extern u_long random(void);
/* imports from stdlib, locally modified */
extern long strtol(const char *, char **, int);
+extern unsigned long strtoul(const char *, char **, int);
extern char *optarg; /* getopt(3) external variables */
extern int optind, opterr, optopt, optreset;
extern int getopt(int, char * const [], const char *);
diff --git a/lib/libstand/strtoul.c b/lib/libstand/strtoul.c
new file mode 100644
index 000000000000..c1609fb3d203
--- /dev/null
+++ b/lib/libstand/strtoul.c
@@ -0,0 +1,123 @@
+/*
+ * Copyright (c) 1990, 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.
+ * 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.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strtoul.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <limits.h>
+#include <ctype.h>
+#include <errno.h>
+#include <stdlib.h>
+
+/*
+ * Convert a string to an unsigned long integer.
+ *
+ * Assumes that the upper and lower case
+ * alphabets and digits are each contiguous.
+ */
+unsigned long
+strtoul(const char * __restrict nptr, char ** __restrict endptr, int base)
+{
+ const char *s;
+ unsigned long acc;
+ char c;
+ unsigned long cutoff;
+ int neg, any, cutlim;
+
+ /*
+ * See strtol for comments as to the logic used.
+ */
+ s = nptr;
+ do {
+ c = *s++;
+ } while (isspace((unsigned char)c));
+ if (c == '-') {
+ neg = 1;
+ c = *s++;
+ } else {
+ neg = 0;
+ if (c == '+')
+ c = *s++;
+ }
+ if ((base == 0 || base == 16) &&
+ c == '0' && (*s == 'x' || *s == 'X') &&
+ ((s[1] >= '0' && s[1] <= '9') ||
+ (s[1] >= 'A' && s[1] <= 'F') ||
+ (s[1] >= 'a' && s[1] <= 'f'))) {
+ c = s[1];
+ s += 2;
+ base = 16;
+ }
+ if (base == 0)
+ base = c == '0' ? 8 : 10;
+ acc = any = 0;
+ if (base < 2 || base > 36)
+ goto noconv;
+
+ cutoff = ULONG_MAX / base;
+ cutlim = ULONG_MAX % base;
+ for ( ; ; c = *s++) {
+ if (c >= '0' && c <= '9')
+ c -= '0';
+ else if (c >= 'A' && c <= 'Z')
+ c -= 'A' - 10;
+ else if (c >= 'a' && c <= 'z')
+ c -= '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 = ULONG_MAX;
+ errno = ERANGE;
+ } else if (!any) {
+noconv:
+ errno = EINVAL;
+ } else if (neg)
+ acc = -acc;
+ if (endptr != NULL)
+ *endptr = (char *)(any ? s - 1 : nptr);
+ return (acc);
+}