1/*	$NetBSD: ex_map.c,v 1.1.1.2 2008/05/18 14:31:16 aymeric Exp $ */
2
3/*-
4 * Copyright (c) 1992, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 * Copyright (c) 1992, 1993, 1994, 1995, 1996
7 *	Keith Bostic.  All rights reserved.
8 *
9 * See the LICENSE file for redistribution information.
10 */
11
12#include "config.h"
13
14#ifndef lint
15static const char sccsid[] = "Id: ex_map.c,v 10.11 2001/06/25 15:19:17 skimo Exp (Berkeley) Date: 2001/06/25 15:19:17";
16#endif /* not lint */
17
18#include <sys/types.h>
19#include <sys/queue.h>
20
21#include <bitstring.h>
22#include <ctype.h>
23#include <limits.h>
24#include <stdio.h>
25#include <stdlib.h>
26#include <string.h>
27
28#include "../common/common.h"
29
30/*
31 * ex_map -- :map[!] [input] [replacement]
32 *	Map a key/string or display mapped keys.
33 *
34 * Historical note:
35 *	Historic vi maps were fairly bizarre, and likely to differ in
36 *	very subtle and strange ways from this implementation.  Two
37 *	things worth noting are that vi would often hang or drop core
38 *	if the map was strange enough (ex: map X "xy$@x^V), or, simply
39 *	not work.  One trick worth remembering is that if you put a
40 *	mark at the start of the map, e.g. map X mx"xy ...), or if you
41 *	put the map in a .exrc file, things would often work much better.
42 *	No clue why.
43 *
44 * PUBLIC: int ex_map __P((SCR *, EXCMD *));
45 */
46int
47ex_map(SCR *sp, EXCMD *cmdp)
48{
49	seq_t stype;
50	CHAR_T *input, *p;
51
52	stype = FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND;
53
54	switch (cmdp->argc) {
55	case 0:
56		if (seq_dump(sp, stype, 1) == 0)
57			msgq(sp, M_INFO, stype == SEQ_INPUT ?
58			    "132|No input map entries" :
59			    "133|No command map entries");
60		return (0);
61	case 2:
62		input = cmdp->argv[0]->bp;
63		break;
64	default:
65		abort();
66	}
67
68	/*
69	 * If the mapped string is #[0-9]* (and wasn't quoted) then store the
70	 * function key mapping.  If the screen specific routine has been set,
71	 * call it as well.  Note, the SEQ_FUNCMAP type is persistent across
72	 * screen types, maybe the next screen type will get it right.
73	 */
74	if (input[0] == '#' && ISDIGIT((UCHAR_T)input[1])) {
75		for (p = input + 2; ISDIGIT((UCHAR_T)*p); ++p);
76		if (p[0] != '\0')
77			goto nofunc;
78
79		if (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
80		    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype,
81		    SEQ_FUNCMAP | SEQ_USERDEF))
82			return (1);
83		return (sp->gp->scr_fmap == NULL ? 0 :
84		    sp->gp->scr_fmap(sp, stype, input, cmdp->argv[0]->len,
85		    cmdp->argv[1]->bp, cmdp->argv[1]->len));
86	}
87
88	/* Some single keys may not be remapped in command mode. */
89nofunc:	if (stype == SEQ_COMMAND && input[1] == '\0')
90		switch (KEY_VAL(sp, input[0])) {
91		case K_COLON:
92		case K_ESCAPE:
93		case K_NL:
94			msgq(sp, M_ERR,
95			    "134|The %s character may not be remapped",
96			    KEY_NAME(sp, input[0]));
97			return (1);
98		}
99	return (seq_set(sp, NULL, 0, input, cmdp->argv[0]->len,
100	    cmdp->argv[1]->bp, cmdp->argv[1]->len, stype, SEQ_USERDEF));
101}
102
103/*
104 * ex_unmap -- (:unmap[!] key)
105 *	Unmap a key.
106 *
107 * PUBLIC: int ex_unmap __P((SCR *, EXCMD *));
108 */
109int
110ex_unmap(SCR *sp, EXCMD *cmdp)
111{
112	if (seq_delete(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len,
113	    FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND)) {
114		msgq_wstr(sp, M_INFO,
115		    cmdp->argv[0]->bp, "135|\"%s\" isn't currently mapped");
116		return (1);
117	}
118	return (0);
119}
120