1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/* $OpenBSD: help.c,v 1.20 2002/08/22 23:28:19 deraadt Exp $ */
/*
* Help functions for Mg 2
*/
#include "def.h"
#include "funmap.h"
#ifndef NO_HELP
#include "kbd.h"
#include "key.h"
#ifndef NO_MACRO
#include "macro.h"
#endif /* !NO_MACRO */
static int showall(BUFFER *, KEYMAP *, char *);
static int findbind(KEYMAP *, PF, char *, size_t);
/*
* Read a key from the keyboard, and look it up in the keymap.
* Display the name of the function currently bound to the key.
*/
/* ARGSUSED */
int
desckey(f, n)
int f, n;
{
KEYMAP *curmap;
PF funct;
int c, m, i, num;
char *pep;
char prompt[80];
#ifndef NO_MACRO
if (inmacro)
return TRUE; /* ignore inside keyboard macro */
#endif /* !NO_MACRO */
num = strlcpy(prompt, "Describe key briefly: ", sizeof(prompt));
if (num >= sizeof prompt)
num = sizeof prompt - 1;
pep = prompt + num;
key.k_count = 0;
m = curbp->b_nmodes;
curmap = curbp->b_modes[m]->p_map;
for (;;) {
for (;;) {
ewprintf("%s", prompt);
pep[-1] = ' ';
pep = keyname(pep, sizeof(prompt) - (pep - prompt),
key.k_chars[key.k_count++] = c = getkey(FALSE));
if ((funct = doscan(curmap, c, &curmap)) != NULL)
break;
*pep++ = '-';
*pep = '\0';
}
if (funct != rescan)
break;
if (ISUPPER(key.k_chars[key.k_count - 1])) {
funct = doscan(curmap,
TOLOWER(key.k_chars[key.k_count - 1]), &curmap);
if (funct == NULL) {
*pep++ = '-';
*pep = '\0';
continue;
}
if (funct != rescan)
break;
}
nextmode:
if (--m < 0)
break;
curmap = curbp->b_modes[m]->p_map;
for (i = 0; i < key.k_count; i++) {
funct = doscan(curmap, key.k_chars[i], &curmap);
if (funct != NULL) {
if (i == key.k_count - 1 && funct != rescan)
goto found;
funct = rescan;
goto nextmode;
}
}
*pep++ = '-';
*pep = '\0';
}
found:
if (funct == rescan || funct == selfinsert)
ewprintf("%k is not bound to any function");
else if ((pep = (char *)function_name(funct)) != NULL)
ewprintf("%k runs the command %s", pep);
else
ewprintf("%k is bound to an unnamed function");
return TRUE;
}
/*
* This function creates a table, listing all of the command
* keys and their current bindings, and stores the table in the
* *help* pop-up buffer. This lets Mg produce it's own wall chart.
*/
/* ARGSUSED */
int
wallchart(f, n)
int f, n;
{
int m;
BUFFER *bp;
bp = bfind("*help*", TRUE);
if (bclear(bp) != TRUE)
/* clear it out */
return FALSE;
bp->b_flag |= BFREADONLY;
for (m = curbp->b_nmodes; m > 0; m--) {
if ((addlinef(bp, "Local keybindings for mode %s:",
curbp->b_modes[m]->p_name) == FALSE) ||
(showall(bp, curbp->b_modes[m]->p_map, "") == FALSE) ||
(addline(bp, "") == FALSE))
return FALSE;
}
if ((addline(bp, "Global bindings:") == FALSE) ||
(showall(bp, fundamental_map, "") == FALSE))
return FALSE;
return popbuftop(bp);
}
static int
showall(BUFFER *bp, KEYMAP *map, char *prefix)
{
KEYMAP *newmap;
char buf[80], key[16];
PF fun;
int c;
if (addline(bp, "") == FALSE)
return FALSE;
/* XXX - 256 ? */
for (c = 0; c < 256; c++) {
fun = doscan(map, c, &newmap);
if (fun == rescan || fun == selfinsert)
continue;
keyname(buf, sizeof(buf), c);
(void)snprintf(key, sizeof key, "%s%s ", prefix, buf);
if (fun == NULL) {
if (showall(bp, newmap, key) == FALSE)
return FALSE;
} else {
if (addlinef(bp, "%-16s%s", key,
function_name(fun)) == FALSE)
return FALSE;
}
}
return TRUE;
}
int
help_help(f, n)
int f, n;
{
KEYMAP *kp;
PF funct;
if ((kp = name_map("help")) == NULL)
return FALSE;
ewprintf("a b c: ");
do {
funct = doscan(kp, getkey(FALSE), NULL);
} while (funct == NULL || funct == help_help);
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO)
macro[macrocount - 1].m_funct = funct;
#endif /* !NO_MACRO */
return (*funct)(f, n);
}
/* ARGSUSED */
int
apropos_command(f, n)
int f, n;
{
BUFFER *bp;
LIST *fnames, *el;
char string[32];
if (eread("apropos: ", string, sizeof(string), EFNEW) == ABORT)
return ABORT;
/* FALSE means we got a 0 character string, which is fine */
bp = bfind("*help*", TRUE);
if (bclear(bp) == FALSE)
return FALSE;
fnames = complete_function_list("", NULL);
for (el = fnames; el != NULL; el = el->l_next) {
char buf[32];
if (strstr(el->l_name, string) == NULL)
continue;
buf[0] = '\0';
findbind(fundamental_map, name_function(el->l_name),
buf, sizeof(buf));
if (addlinef(bp, "%-32s%s", el->l_name, buf) == FALSE) {
free_file_list(fnames);
return FALSE;
}
}
free_file_list(fnames);
return popbuftop(bp);
}
static int
findbind(KEYMAP *map, PF fun, char *buf, size_t len)
{
KEYMAP *newmap;
PF nfun;
char buf2[16], key[16];
int c;
/* XXX - 256 ? */
for (c = 0; c < 256; c++) {
nfun = doscan(map, c, &newmap);
if (nfun == fun) {
keyname(buf, len, c);
return TRUE;
}
if (nfun == NULL) {
if (findbind(newmap, fun, buf2, sizeof(buf2)) == TRUE) {
keyname(key, sizeof(key), c);
(void)snprintf(buf, len, "%s %s", key, buf2);
return TRUE;
}
}
}
return FALSE;
}
#endif /* !NO_HELP */
|
