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