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
|
/* opts-std-startup.c - Standard startup-time command line parser.
Copyright (C) 1995,96,97,98,99,2001,02 Free Software Foundation, Inc.
Written by Miles Bader <miles@gnu.org> and Marcus Brinkmann.
This file is part of the GNU Hurd.
The GNU Hurd is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2, or (at
your option) any later version.
The GNU Hurd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include <stdio.h>
#include <argp.h>
#include "priv.h"
/* Option keys for long-only options in diskfs_common_options. */
#define OPT_SLACK 600 /* --slack */
#define OPT_JUMP_DOWN_AT_INPUT 601 /* --jump-down-at-input */
#define OPT_JUMP_DOWN_AT_OUTPUT 602 /* --jump-down-at-output */
/* Common value for diskfs_common_options and diskfs_default_sync_interval. */
#define DEFAULT_SLACK 100
#define DEFAULT_SLACK_STRING STRINGIFY(DEFAULT_SLACK)
#define STRINGIFY(x) STRINGIFY_1(x)
#define STRINGIFY_1(x) #x
/* Number of records the client is allowed to lag behind the
server. */
int _cons_slack = DEFAULT_SLACK;
/* If we jump down at input. */
int _cons_jump_down_at_input;
/* If we jump down at output. */
int _cons_jump_down_at_output;
/* The filename of the console server. */
char *_cons_file;
static const struct argp_option
startup_options[] =
{
{ "slack", OPT_SLACK, "RECORDS", 0, "Max number of records the client is"
" allowed to lag behind the server (default " DEFAULT_SLACK_STRING ")" },
{ "jump-down-at-input", OPT_JUMP_DOWN_AT_INPUT, NULL, 0,
"End scrollback when something is entered" },
{ "jump-down-at-output", OPT_JUMP_DOWN_AT_OUTPUT, NULL, 0,
"End scrollback when something is printed" },
{ 0, 0 }
};
static const char args_doc[] = "CONSOLE";
static const char doc[] = "A console client.";
static error_t
parse_startup_opt (int opt, char *arg, struct argp_state *state)
{
switch (opt)
{
case OPT_SLACK:
_cons_slack = atoi (arg);
break;
case OPT_JUMP_DOWN_AT_INPUT:
_cons_jump_down_at_input = 1;
break;
case OPT_JUMP_DOWN_AT_OUTPUT:
_cons_jump_down_at_output = 1;
break;
case ARGP_KEY_ARG:
if (state->arg_num > 0)
/* Too many arguments. */
argp_usage (state);
_cons_file = arg;
break;
case ARGP_KEY_END:
if (state->arg_num != 1)
/* Not enough arguments. */
argp_usage (state);
break;
default:
return ARGP_ERR_UNKNOWN;
}
return 0;
}
/* An argp structure for the standard console client command line
arguments. */
const struct argp
cons_startup_argp =
{
startup_options, parse_startup_opt, args_doc, doc
};
|
