dist/nvi/common/msg.h

   1 /*      $NetBSD$ */
   2
   3 /*-
   4  * Copyright (c) 1993, 1994
   5  *      The Regents of the University of California.  All rights reserved.
   6  * Copyright (c) 1993, 1994, 1995, 1996
   7  *      Keith Bostic.  All rights reserved.
   8  *
   9  * See the LICENSE file for redistribution information.
  10  *
  11  *      Id: msg.h,v 10.11 2000/04/21 21:26:19 skimo Exp (Berkeley) Date: 2000/04/21 21:26:19
  12  */
  13
  14 /*
  15  * Common messages (continuation or confirmation).
  16  */
  17 typedef enum {
  18         CMSG_CONF, CMSG_CONT, CMSG_CONT_EX,
  19         CMSG_CONT_R, CMSG_CONT_S, CMSG_CONT_Q } cmsg_t;
  20
  21 /*
  22  * Message types.
  23  *
  24  * !!!
  25  * In historical vi, O_VERBOSE didn't exist, and O_TERSE made the error
  26  * messages shorter.  In this implementation, O_TERSE has no effect and
  27  * O_VERBOSE results in informational displays about common errors, for
  28  * naive users.
  29  *
  30  * M_NONE       Display to the user, no reformatting, no nothing.
  31  *
  32  * M_BERR       Error: M_ERR if O_VERBOSE, else bell.
  33  * M_ERR        Error: Display in inverse video.
  34  * M_INFO        Info: Display in normal video.
  35  * M_SYSERR     Error: M_ERR, using strerror(3) message.
  36  * M_VINFO       Info: M_INFO if O_VERBOSE, else ignore.
  37  *
  38  * The underlying message display routines only need to know about M_NONE,
  39  * M_ERR and M_INFO -- all the other message types are converted into one
  40  * of them by the message routines.
  41  */
  42 typedef enum {
  43         M_NONE = 1, M_BERR, M_ERR, M_INFO, M_SYSERR, M_VINFO, M_DBERR } mtype_t;
  44
  45 /*
  46  * There are major problems with error messages being generated by routines
  47  * preparing the screen to display error messages.  It's possible for the
  48  * editor to generate messages before we have a screen in which to display
  49  * them, or during the transition between ex (and vi startup) and a true vi.
  50  * There's a queue in the global area to hold them.
  51  *
  52  * If SC_EX/SC_VI is set, that's the mode that the editor is in.  If the flag
  53  * S_SCREEN_READY is set, that means that the screen is prepared to display
  54  * messages.
  55  */
  56 typedef struct _msgh MSGH;      /* MSGS list head structure. */
  57 LIST_HEAD(_msgh, _msg);
  58 struct _msg {
  59         LIST_ENTRY(_msg) q;     /* Linked list of messages. */
  60         mtype_t  mtype;         /* Message type: M_NONE, M_ERR, M_INFO. */
  61         char    *buf;           /* Message buffer. */
  62         size_t   len;           /* Message length. */
  63 };
  64
  65 /* Flags to msgq_status(). */
  66 #define MSTAT_SHOWLAST  0x01    /* Show the line number of the last line. */
  67 #define MSTAT_TRUNCATE  0x02    /* Truncate the file name if it's too long. */