common/mark.h

   1 /*-
   2  * Copyright (c) 1992, 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  *
   9  *      $Id: mark.h,v 10.5 2000/07/14 14:29:16 skimo Exp $ (Berkeley) $Date: 2000/07/14 14:29:16 $
  10  */
  11
  12 /*
  13  * The MARK and LMARK structures define positions in the file.  There are
  14  * two structures because the mark subroutines are the only places where
  15  * anything cares about something other than line and column.
  16  *
  17  * Because of the different interfaces used by the db(3) package, curses,
  18  * and users, the line number is 1 based and the column number is 0 based.
  19  * Additionally, it is known that the out-of-band line number is less than
  20  * any legal line number.  The line number is of type db_recno_t, as that's
  21  * the underlying type of the database.  The column number is of type size_t,
  22  * guaranteeing that we can malloc a line.
  23  */
  24 struct _mark {
  25 #define OOBLNO          0               /* Out-of-band line number. */
  26         db_recno_t       lno;                   /* Line number. */
  27         size_t   cno;                   /* Column number. */
  28 };
  29
  30 struct _lmark {
  31         LIST_ENTRY(_lmark) q;           /* Linked list of marks. */
  32         db_recno_t       lno;                   /* Line number. */
  33         size_t   cno;                   /* Column number. */
  34         /* XXXX Needed ? Can non ascii-chars be mark names ? */
  35         CHAR_T   name;                  /* Mark name. */
  36
  37 #define MARK_DELETED    0x01            /* Mark was deleted. */
  38 #define MARK_USERSET    0x02            /* User set this mark. */
  39         u_int8_t flags;
  40 };
  41
  42 #define ABSMARK1        '\''            /* Absolute mark name. */
  43 #define ABSMARK2        '`'             /* Absolute mark name. */