Imported Upstream version 93u+upstream

1 files changed, 51 insertions, 0 deletions

diff --git a/src/lib/libast/comp/memccpy.c b/src/lib/libast/comp/memccpy.c
new file mode 100644
index 0000000..c973a2d
--- /dev/null
+++ b/src/lib/libast/comp/memccpy.c
@@ -0,0 +1,51 @@
+/***********************************************************************
+*                                                                      *
+*               This software is part of the ast package               *
+*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
+*                      and is licensed under the                       *
+*                 Eclipse Public License, Version 1.0                  *
+*                    by AT&T Intellectual Property                     *
+*                                                                      *
+*                A copy of the License is available at                 *
+*          http://www.eclipse.org/org/documents/epl-v10.html           *
+*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
+*                                                                      *
+*              Information and Software Systems Research               *
+*                            AT&T Research                             *
+*                           Florham Park NJ                            *
+*                                                                      *
+*                 Glenn Fowler <gsf@research.att.com>                  *
+*                  David Korn <dgk@research.att.com>                   *
+*                   Phong Vo <kpv@research.att.com>                    *
+*                                                                      *
+***********************************************************************/
+#pragma prototyped
+
+#include <ast.h>
+
+#if _lib_memccpy && !_UWIN
+
+NoN(memccpy)
+
+#else
+
+/*
+ * Copy s2 to s1, stopping if character c is copied. Copy no more than n bytes.
+ * Return a pointer to the byte after character c in the copy,
+ * or 0 if c is not found in the first n bytes.
+ */
+
+void*
+memccpy(void* as1, const void* as2, register int c, size_t n)
+{
+	register char*		s1 = (char*)as1;
+	register const char*	s2 = (char*)as2;
+	register const char*	ep = s2 + n;
+
+	while (s2 < ep)
+		if ((*s1++ = *s2++) == c)
+			return(s1);
+	return(0);
+}
+
+#endif