common/seq.h

   1 /*-
   2  * Copyright (c) 1992, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * %sccs.include.redist.c%
   6  *
   7  *      $Id: seq.h,v 8.5 1993/11/18 08:17:21 bostic Exp $ (Berkeley) $Date: 1993/11/18 08:17:21 $
   8  */
   9
  10 /*
  11  * Map and abbreviation structures.
  12  *
  13  * The map structure is doubly linked list, sorted by input string and by
  14  * input length within the string.  (The latter is necessary so that short
  15  * matches will happen before long matches when the list is searched.)
  16  * Additionally, there is a bitmap which has bits set if there are entries
  17  * starting with the corresponding character.  This keeps us from walking
  18  * the list unless it's necessary.
  19  *
  20  * XXX
  21  * The fast-lookup bits are never turned off -- users don't usually unmap
  22  * things, though, so it's probably not a big deal.
  23  */
  24                                         /* Sequence type. */
  25 enum seqtype { SEQ_ABBREV, SEQ_COMMAND, SEQ_INPUT };
  26
  27 struct _seq {
  28         LIST_ENTRY(_seq) q;             /* Linked list of all sequences. */
  29         enum seqtype stype;             /* Sequence type. */
  30         char    *name;                  /* Name of the sequence, if any. */
  31         char    *input;                 /* Input key sequence. */
  32         size_t   ilen;                  /* Input key sequence length. */
  33         char    *output;                /* Output key sequence. */
  34         size_t   olen;                  /* Output key sequence length. */
  35
  36 #define S_USERDEF       0x01            /* If sequence user defined. */
  37         u_char   flags;
  38 };
  39
  40 int      abbr_save __P((SCR *, FILE *));
  41 int      map_save __P((SCR *, FILE *));
  42 int      seq_delete __P((SCR *, char *, enum seqtype));
  43 int      seq_dump __P((SCR *, enum seqtype, int));
  44 SEQ     *seq_find __P((SCR *, char *, size_t, enum seqtype, int *));
  45 void     seq_init __P((SCR *));
  46 int      seq_save __P((SCR *, FILE *, char *, enum seqtype));
  47 int      seq_set __P((SCR *, char *, char *, char *, enum seqtype, int));