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