xref: /titanic_50/usr/src/cmd/vi/port/ex_re.h (revision 174bc6499d233e329ecd3d98a880a7b07df16bfa)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /* Copyright (c) 1981 Regents of the University of California */
27 #ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.6	*/
28 
29 #include <regexpr.h>
30 /*
31  * Regular expression definitions.
32  * The regular expressions in ex are similar to those in ed,
33  * with the addition of the word boundaries from Toronto ed
34  * and allowing character classes to have [a-b] as in the shell.
35  * The numbers for the nodes below are spaced further apart then
36  * necessary because I at one time partially put in + and | (one or
37  * more and alternation.)
38  */
39 #define	EXPSIZ	(ESIZE + 2)
40 
41 struct	regexp {
42 	unsigned char	Expbuf[EXPSIZ];
43 	short	Nbra;
44 };
45 
46 /*
47  * There are three regular expressions here, the previous (in re),
48  * the previous substitute (in subre) and the previous scanning (in scanre).
49  * It would be possible to get rid of "re" by making it a stack parameter
50  * to the appropriate routines.
51  */
52 var struct	regexp *re;		/* Last re */
53 var struct	regexp *scanre;		/* Last scanning re */
54 var struct	regexp *subre;		/* Last substitute re */
55 
56 /*
57  * Since the phototypesetter v7-epsilon
58  * C compiler doesn't have structure assignment...
59  */
60 void savere(struct regexp ** a);
61 void resre(struct regexp * a);
62 
63 /*
64  * Definitions for substitute
65  */
66 var unsigned char	rhsbuf[RHSSIZE];	/* Rhs of last substitute */
67