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 10.6 2011/07/04 14:41:51 zy Exp $ 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 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 recno_t lno; /* Line number. */ 27 size_t cno; /* Column number. */ 28 }; 29 30 struct _lmark { 31 SLIST_ENTRY(_lmark) q; /* Linked list of marks. */ 32 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. */ 44