NetBSD/usr.bin/vi/common/seq.h

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/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*
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* @(#)seq.h 10.3 (Berkeley) 3/6/96
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*/
/*
* Map and abbreviation structures.
*
* The map structure is doubly linked list, sorted by input string and by
* input length within the string. (The latter is necessary so that short
* matches will happen before long matches when the list is searched.)
* Additionally, there is a bitmap which has bits set if there are entries
* starting with the corresponding character. This keeps us from walking
* the list unless it's necessary.
*
* The name and the output fields of a SEQ can be empty, i.e. NULL.
* Only the input field is required.
*
* XXX
* The fast-lookup bits are never turned off -- users don't usually unmap
* things, though, so it's probably not a big deal.
*/
struct _seq {
LIST_ENTRY(_seq) q; /* Linked list of all sequences. */
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seq_t stype; /* Sequence type. */
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CHAR_T *name; /* Sequence name (if any). */
size_t nlen; /* Name length. */
CHAR_T *input; /* Sequence input keys. */
size_t ilen; /* Input keys length. */
CHAR_T *output; /* Sequence output keys. */
size_t olen; /* Output keys length. */
#define SEQ_FUNCMAP 0x01 /* If unresolved function key.*/
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#define SEQ_NOOVERWRITE 0x02 /* Don't replace existing entry. */
#define SEQ_SCREEN 0x04 /* If screen specific. */
#define SEQ_USERDEF 0x08 /* If user defined. */
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u_int8_t flags;
};