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[] = "@(#)ex_map.c	10.9 (Berkeley) 3/6/96";
14#endif /* not lint */
15
16#include <sys/types.h>
17#include <sys/queue.h>
18
19#include <bitstring.h>
20#include <ctype.h>
21#include <limits.h>
22#include <stdio.h>
23#include <stdlib.h>
24#include <string.h>
25
26#include "../common/common.h"
27
28/*
29 * ex_map -- :map[!] [input] [replacement]
30 *	Map a key/string or display mapped keys.
31 *
32 * Historical note:
33 *	Historic vi maps were fairly bizarre, and likely to differ in
34 *	very subtle and strange ways from this implementation.  Two
35 *	things worth noting are that vi would often hang or drop core
36 *	if the map was strange enough (ex: map X "xy$@x^V), or, simply
37 *	not work.  One trick worth remembering is that if you put a
38 *	mark at the start of the map, e.g. map X mx"xy ...), or if you
39 *	put the map in a .exrc file, things would often work much better.
40 *	No clue why.
41 *
42 * PUBLIC: int ex_map __P((SCR *, EXCMD *));
43 */
44int
45ex_map(sp, cmdp)
46	SCR *sp;
47	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(input[1])) {
75		for (p = input + 2; isdigit(*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(sp, cmdp)
111	SCR *sp;
112	EXCMD *cmdp;
113{
114	if (seq_delete(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len,
115	    FL_ISSET(cmdp->iflags, E_C_FORCE) ? SEQ_INPUT : SEQ_COMMAND)) {
116		msgq_str(sp, M_INFO,
117		    cmdp->argv[0]->bp, "135|\"%s\" isn't currently mapped");
118		return (1);
119	}
120	return (0);
121}
122