1 files changed, 102 insertions, 0 deletions
diff --git a/gnu/usr.bin/rcs/lib/rcskeys.c b/gnu/usr.bin/rcs/lib/rcskeys.c
new file mode 100644
index 0000000..82850a7
--- /dev/null
+++ b/gnu/usr.bin/rcs/lib/rcskeys.c
@@ -0,0 +1,102 @@
+/*
+ *                     RCS keyword table and match operation
+ */
+
+/* Copyright (C) 1982, 1988, 1989 Walter Tichy
+   Copyright 1990, 1991 by Paul Eggert
+   Distributed under license by the Free Software Foundation, Inc.
+
+This file is part of RCS.
+
+RCS 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 2, or (at your option)
+any later version.
+
+RCS 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 RCS; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Report problems and direct all questions to:
+
+    rcs-bugs@cs.purdue.edu
+
+*/
+
+
+
+/* $Log: rcskeys.c,v $
+ * Revision 5.2  1991/08/19  03:13:55  eggert
+ * Say `T const' instead of `const T'; it's less confusing for pointer types.
+ * (This change was made in other source files too.)
+ *
+ * Revision 5.1  1991/04/21  11:58:25  eggert
+ * Don't put , just before } in initializer.
+ *
+ * Revision 5.0  1990/08/22  08:12:54  eggert
+ * Add -k.  Ansify and Posixate.
+ *
+ * Revision 4.3  89/05/01  15:13:02  narten
+ * changed copyright header to reflect current distribution rules
+ * 
+ * Revision 4.2  87/10/18  10:36:33  narten
+ * Updating version numbers. Changes relative to 1.1 actuallyt
+ * relative to 4.1
+ * 
+ * Revision 1.2  87/09/24  14:00:10  narten
+ * Sources now pass through lint (if you ignore printf/sprintf/fprintf 
+ * warnings)
+ * 
+ * Revision 4.1  83/05/04  10:06:53  wft
+ * Initial revision.
+ * 
+ */
+
+
+#include "rcsbase.h"
+
+libId(keysId, "$Id: rcskeys.c,v 5.2 1991/08/19 03:13:55 eggert Exp $")
+
+
+char const *const Keyword[] = {
+    /* This must be in the same order as rcsbase.h's enum markers type. */
+	nil,
+	AUTHOR, DATE, HEADER, IDH,
+	LOCKER, LOG, RCSFILE, REVISION, SOURCE, STATE
+};
+
+
+
+	enum markers
+trymatch(string)
+	char const *string;
+/* function: Checks whether string starts with a keyword followed
+ * by a KDELIM or a VDELIM.
+ * If successful, returns the appropriate marker, otherwise Nomatch.
+ */
+{
+        register int j;
+	register char const *p, *s;
+	for (j = sizeof(Keyword)/sizeof(*Keyword);  (--j);  ) {
+		/* try next keyword */
+		p = Keyword[j];
+		s = string;
+		while (*p++ == *s++) {
+			if (!*p)
+			    switch (*s) {
+				case KDELIM:
+				case VDELIM:
+				    return (enum markers)j;
+				default:
+				    return Nomatch;
+			    }
+		}
+        }
+        return(Nomatch);
+}
+