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
|
/*-
* Copyright (c) 1992, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1992, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#ifndef lint
static const char sccsid[] = "@(#)ex_usage.c 10.13 (Berkeley) 5/3/96";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../common/common.h"
#include "../vi/vi.h"
/*
* ex_help -- :help
* Display help message.
*
* PUBLIC: int ex_help __P((SCR *, EXCMD *));
*/
int
ex_help(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
(void)ex_puts(sp,
"To see the list of vi commands, enter \":viusage<CR>\"\n");
(void)ex_puts(sp,
"To see the list of ex commands, enter \":exusage<CR>\"\n");
(void)ex_puts(sp,
"For an ex command usage statement enter \":exusage [cmd]<CR>\"\n");
(void)ex_puts(sp,
"For a vi key usage statement enter \":viusage [key]<CR>\"\n");
(void)ex_puts(sp, "To exit, enter \":q!\"\n");
return (0);
}
/*
* ex_usage -- :exusage [cmd]
* Display ex usage strings.
*
* PUBLIC: int ex_usage __P((SCR *, EXCMD *));
*/
int
ex_usage(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
ARGS *ap;
EXCMDLIST const *cp;
int newscreen;
char *name, *p, nb[MAXCMDNAMELEN + 5];
switch (cmdp->argc) {
case 1:
ap = cmdp->argv[0];
if (isupper(ap->bp[0])) {
newscreen = 1;
ap->bp[0] = tolower(ap->bp[0]);
} else
newscreen = 0;
for (cp = cmds; cp->name != NULL &&
memcmp(ap->bp, cp->name, ap->len); ++cp);
if (cp->name == NULL ||
newscreen && !F_ISSET(cp, E_NEWSCREEN)) {
if (newscreen)
ap->bp[0] = toupper(ap->bp[0]);
(void)ex_printf(sp, "The %.*s command is unknown\n",
(int)ap->len, ap->bp);
} else {
(void)ex_printf(sp,
"Command: %s\n Usage: %s\n", cp->help, cp->usage);
/*
* !!!
* The "visual" command has two modes, one from ex,
* one from the vi colon line. Don't ask.
*/
if (cp != &cmds[C_VISUAL_EX] &&
cp != &cmds[C_VISUAL_VI])
break;
if (cp == &cmds[C_VISUAL_EX])
cp = &cmds[C_VISUAL_VI];
else
cp = &cmds[C_VISUAL_EX];
(void)ex_printf(sp,
"Command: %s\n Usage: %s\n", cp->help, cp->usage);
}
break;
case 0:
for (cp = cmds; cp->name != NULL && !INTERRUPTED(sp); ++cp) {
/*
* The ^D command has an unprintable name.
*
* XXX
* We display both capital and lower-case versions of
* the appropriate commands -- no need to add in extra
* room, they're all short names.
*/
if (cp == &cmds[C_SCROLL])
name = "^D";
else if (F_ISSET(cp, E_NEWSCREEN)) {
nb[0] = '[';
nb[1] = toupper(cp->name[0]);
nb[2] = cp->name[0];
nb[3] = ']';
for (name = cp->name + 1,
p = nb + 4; (*p++ = *name++) != '\0';);
name = nb;
} else
name = cp->name;
(void)ex_printf(sp,
"%*s: %s\n", MAXCMDNAMELEN, name, cp->help);
}
break;
default:
abort();
}
return (0);
}
/*
* ex_viusage -- :viusage [key]
* Display vi usage strings.
*
* PUBLIC: int ex_viusage __P((SCR *, EXCMD *));
*/
int
ex_viusage(sp, cmdp)
SCR *sp;
EXCMD *cmdp;
{
GS *gp;
VIKEYS const *kp;
int key;
gp = sp->gp;
switch (cmdp->argc) {
case 1:
if (cmdp->argv[0]->len != 1) {
ex_emsg(sp, cmdp->cmd->usage, EXM_USAGE);
return (1);
}
key = cmdp->argv[0]->bp[0];
if (key > MAXVIKEY)
goto nokey;
/* Special case: '[' and ']' commands. */
if ((key == '[' || key == ']') && cmdp->argv[0]->bp[1] != key)
goto nokey;
/* Special case: ~ command. */
if (key == '~' && O_ISSET(sp, O_TILDEOP))
kp = &tmotion;
else
kp = &vikeys[key];
if (kp->usage == NULL)
nokey: (void)ex_printf(sp,
"The %s key has no current meaning\n",
KEY_NAME(sp, key));
else
(void)ex_printf(sp,
" Key:%s%s\nUsage: %s\n",
isblank(*kp->help) ? "" : " ", kp->help, kp->usage);
break;
case 0:
for (key = 0; key <= MAXVIKEY && !INTERRUPTED(sp); ++key) {
/* Special case: ~ command. */
if (key == '~' && O_ISSET(sp, O_TILDEOP))
kp = &tmotion;
else
kp = &vikeys[key];
if (kp->help != NULL)
(void)ex_printf(sp, "%s\n", kp->help);
}
break;
default:
abort();
}
return (0);
}
|
