Imported Upstream version 93u+upstream

1 files changed, 76 insertions, 0 deletions

diff --git a/src/lib/libast/comp/strstr.c b/src/lib/libast/comp/strstr.c
new file mode 100644
index 0000000..aa50058
--- /dev/null
+++ b/src/lib/libast/comp/strstr.c
@@ -0,0 +1,76 @@
+/***********************************************************************
+*                                                                      *
+*               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
+
+#if defined(__STDPP__directive) && defined(__STDPP__hide)
+__STDPP__directive pragma pp:hide strstr
+#else
+#define strstr		______strstr
+#endif
+
+#include <ast.h>
+
+#if defined(__STDPP__directive) && defined(__STDPP__hide)
+__STDPP__directive pragma pp:nohide strstr
+#else
+#undef	strstr
+#endif
+
+#if _lib_strstr
+
+NoN(strstr)
+
+#else
+
+#if defined(__EXPORT__)
+#define extern	__EXPORT__
+#endif
+
+extern char*
+strstr(register const char* s1, register const char* s2)
+{
+	register int		c1;
+	register int		c2;
+	register const char*	t1;
+	register const char*	t2;
+	
+	if (s2)
+	{
+		if (!*s2)
+			return (char*)s1;
+		c2 = *s2++;
+		while (c1 = *s1++)
+			if (c1 == c2)
+			{
+				t1 = s1;
+				t2 = s2;
+				do
+				{
+					if (!*t2)
+						return (char*)s1 - 1;
+				} while (*t1++ == *t2++);
+			}
+	}
+	return 0;
+}
+
+#endif