1/*-
2 * Copyright (c) 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 *	Keith Bostic.  All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 *
9 *	@(#)msg.h	10.10 (Berkeley) 5/10/96
10 */
11
12/*
13 * Common messages (continuation or confirmation).
14 */
15typedef enum {
16	CMSG_CONF, CMSG_CONT, CMSG_CONT_EX,
17	CMSG_CONT_R, CMSG_CONT_S, CMSG_CONT_Q } cmsg_t;
18
19/*
20 * Message types.
21 *
22 * !!!
23 * In historical vi, O_VERBOSE didn't exist, and O_TERSE made the error
24 * messages shorter.  In this implementation, O_TERSE has no effect and
25 * O_VERBOSE results in informational displays about common errors, for
26 * naive users.
27 *
28 * M_NONE	Display to the user, no reformatting, no nothing.
29 *
30 * M_BERR	Error: M_ERR if O_VERBOSE, else bell.
31 * M_ERR	Error: Display in inverse video.
32 * M_INFO	 Info: Display in normal video.
33 * M_SYSERR	Error: M_ERR, using strerror(3) message.
34 * M_VINFO	 Info: M_INFO if O_VERBOSE, else ignore.
35 *
36 * The underlying message display routines only need to know about M_NONE,
37 * M_ERR and M_INFO -- all the other message types are converted into one
38 * of them by the message routines.
39 */
40typedef enum {
41	M_NONE = 1, M_BERR, M_ERR, M_INFO, M_SYSERR, M_VINFO } mtype_t;
42
43/*
44 * There are major problems with error messages being generated by routines
45 * preparing the screen to display error messages.  It's possible for the
46 * editor to generate messages before we have a screen in which to display
47 * them, or during the transition between ex (and vi startup) and a true vi.
48 * There's a queue in the global area to hold them.
49 *
50 * If SC_EX/SC_VI is set, that's the mode that the editor is in.  If the flag
51 * S_SCREEN_READY is set, that means that the screen is prepared to display
52 * messages.
53 */
54typedef struct _msgh MSGH;	/* MSGS list head structure. */
55SLIST_HEAD(_msgh, _msg);
56struct _msg {
57	SLIST_ENTRY(_msg) q;	/* Linked list of messages. */
58	mtype_t	 mtype;		/* Message type: M_NONE, M_ERR, M_INFO. */
59	char	*buf;		/* Message buffer. */
60	size_t	 len;		/* Message length. */
61};
62
63/* Flags to msgq_status(). */
64#define	MSTAT_SHOWLAST	0x01	/* Show the line number of the last line. */
65#define	MSTAT_TRUNCATE	0x02	/* Truncate the file name if it's too long. */
66