X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/f8b55f57304c2809cddf9374da11dab4631c133e..8c84600bf917165f5a9e17e7ee785ec61658b1ce:/usr/src/include/vis.h

diff --git a/usr/src/include/vis.h b/usr/src/include/vis.h
index 54e6a698b0..091f8e52c1 100644
--- a/usr/src/include/vis.h
+++ b/usr/src/include/vis.h
@@ -1,45 +1,53 @@
-/*
- * Copyright (c) 1989 The Regents of the University of California.
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
  *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley.  The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * %sccs.include.redist.c%
  *
- *	@(#)vis.h	5.1 (Berkeley) %G%
+ *	@(#)vis.h	5.8 (Berkeley) %G%
+ */
+
+/*
+ * to select alternate encoding format
  */
+#define	VIS_OCTAL	0x01	/* use octal \ddd format */
+#define	VIS_CSTYLE	0x02	/* use \[nrft0..] where appropiate */
 
 /*
- * cencode flags
+ * to alter set of characters encoded (default is to encode all
+ * non-graphic except space, tab, and newline).
  */
-#define	CENC_CSTYLE	1	/* use C-style backslash sequences */
-#define	CENC_GRAPH	2	/* encode as ^? and M- sequences */
-#define	CENC_OCTAL	4	/* encode as octal sequences */
-#define	CENC_ALL	(CENC_CSTYLE|CENC_GRAPH|CENC_OCTAL)
-#define	CENC_WHITE	8	/* encode white-space chars (sp-tb-nl) */
-#define	CENC_RACHAR	0x10	/* look at read-ahead char */
+#define	VIS_SP		0x04	/* also encode space */
+#define	VIS_TAB		0x08	/* also encode tab */
+#define	VIS_NL		0x10	/* also encode newline */
+#define	VIS_WHITE	(VIS_SP | VIS_TAB | VIS_NL)
+#define	VIS_SAFE	0x20	/* only encode "unsafe" characters */
 
 /*
- * cdecode flags
+ * other
  */
-#define	CDEC_HAT	1	/* treat ^ as special */
-#define	CDEC_END	2	/* reset decode machine */
+#define	VIS_NOSLASH	0x40	/* inhibit printing '\' */
 
 /*
- * cdecode return codes
+ * unvis return codes
  */
-#define	CDEC_NEEDMORE	0	/* not done, feed another char */
-#define	CDEC_OK		1	/* done, character ready */
-#define	CDEC_OKPUSH	2	/* done, push back passed char */
-#define	CDEC_NOCHAR	3	/* done, no character ready (hidden newline) */
-#define	CDEC_SYNBAD	-1	/* unrecognized escape sequence */
+#define	UNVIS_VALID	 1	/* character valid */
+#define	UNVIS_VALIDPUSH	 2	/* character valid, push back passed char */
+#define	UNVIS_NOCHAR	 3	/* valid sequence, no character produced */
+#define	UNVIS_SYNBAD	-1	/* unrecognized escape sequence */
+#define	UNVIS_ERROR	-2	/* decoder in unknown state (unrecoverable) */
+
+/*
+ * unvis flags
+ */
+#define	UNVIS_END	1	/* no more characters */
+
+#include <sys/cdefs.h>
 
-extern char *cencode();
+__BEGIN_DECLS
+char	*vis __P((char *, char, int, char));
+int	strvis __P((char *, const char *, int));
+int	strvisx __P((char *, const char *, size_t, int));
+int	strunvis __P((char *, const char *));
+int	unvis __P((char *, char, int *, int));
+__END_DECLS