1 files changed, 113 insertions, 0 deletions
diff --git a/lib/sh/strtoumax.c b/lib/sh/strtoumax.c
new file mode 100644
index 0000000..2e26efc
--- /dev/null
+++ b/lib/sh/strtoumax.c
@@ -0,0 +1,113 @@
+/* strtoumax - convert string representation of a number into an uintmax_t value. */
+
+/* Copyright 1999-2020 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   Bash is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/* Written by Paul Eggert.  Modified by Chet Ramey for Bash. */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#if HAVE_INTTYPES_H
+#  include <inttypes.h>
+#endif
+
+#if HAVE_STDINT_H
+#  include <stdint.h>
+#endif
+
+#if HAVE_STDLIB_H
+#  include <stdlib.h>
+#endif
+
+#include <stdc.h>
+
+/* Verify a requirement at compile-time (unlike assert, which is runtime).  */
+#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
+
+#ifndef HAVE_DECL_STRTOUL
+"this configure-time declaration test was not run"
+#endif
+#if !HAVE_DECL_STRTOUL
+extern unsigned long strtoul PARAMS((const char *, char **, int));
+#endif
+
+#ifndef HAVE_DECL_STRTOULL
+"this configure-time declaration test was not run"
+#endif
+#if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG_INT
+extern unsigned long long strtoull PARAMS((const char *, char **, int));
+#endif
+
+#ifdef strtoumax
+#undef strtoumax
+#endif
+
+uintmax_t
+strtoumax (ptr, endptr, base)
+     const char *ptr;
+     char **endptr;
+     int base;
+{
+#if HAVE_UNSIGNED_LONG_LONG_INT
+  verify (size_is_that_of_unsigned_long_or_unsigned_long_long,
+	  (sizeof (uintmax_t) == sizeof (unsigned long) ||
+	   sizeof (uintmax_t) == sizeof (unsigned long long)));
+
+  if (sizeof (uintmax_t) != sizeof (unsigned long))
+    return (strtoull (ptr, endptr, base));
+#else
+  verify (size_is_that_of_unsigned_long, sizeof (uintmax_t) == sizeof (unsigned long));
+#endif
+
+  return (strtoul (ptr, endptr, base));
+}
+
+#ifdef TESTING
+# include <stdio.h>
+int
+main ()
+{
+  char *p, *endptr;
+  uintmax_t x;
+#if HAVE_UNSIGNED_LONG_LONG_INT
+  unsigned long long y;
+#endif
+  unsigned long z;
+
+  printf ("sizeof uintmax_t: %d\n", sizeof (uintmax_t));
+
+#if HAVE_UNSIGNED_LONG_LONG_INT
+  printf ("sizeof unsigned long long: %d\n", sizeof (unsigned long long));
+#endif
+  printf ("sizeof unsigned long: %d\n", sizeof (unsigned long));
+
+  x = strtoumax("42", &endptr, 10);
+#if HAVE_LONG_LONG_INT
+  y = strtoull("42", &endptr, 10);
+#else
+  y = 0;
+#endif
+  z = strtoul("42", &endptr, 10);
+
+  printf ("%llu %llu %lu\n", x, y, z);
+
+  exit (0);
+}
+#endif