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
|
/*
* BIRD Client - Readline variant I/O
*
* (c) 1999--2004 Martin Mares <mj@ucw.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <termios.h>
#include <readline/readline.h>
#include <readline/history.h>
#include <curses.h>
#include "nest/bird.h"
#include "lib/resource.h"
#include "lib/string.h"
#include "client/client.h"
#include "sysdep/unix/unix.h"
static int input_hidden_end;
static int prompt_active;
/*** Input ***/
/* HACK: libreadline internals we need to access */
extern int _rl_vis_botlin;
extern void _rl_move_vert(int);
extern Function *rl_last_func;
static void
add_history_dedup(char *cmd)
{
/* Add history line if it differs from the last one */
HIST_ENTRY *he = history_get(history_length);
if (!he || strcmp(he->line, cmd))
add_history(cmd);
}
static void
input_got_line(char *cmd_buffer)
{
if (!cmd_buffer)
{
cleanup();
exit(0);
}
if (cmd_buffer[0])
{
add_history_dedup(cmd_buffer);
submit_command(cmd_buffer);
}
free(cmd_buffer);
}
void
input_start_list(void)
{
/* Leave the currently edited line and make space for listing */
_rl_move_vert(_rl_vis_botlin);
#ifdef HAVE_RL_CRLF
rl_crlf();
#endif
}
void
input_stop_list(void)
{
/* Reprint the currently edited line after listing */
rl_on_new_line();
rl_redisplay();
}
static int
input_complete(int arg UNUSED, int key UNUSED)
{
static int complete_flag;
char buf[256];
if (rl_last_func != input_complete)
complete_flag = 0;
switch (cmd_complete(rl_line_buffer, rl_point, buf, complete_flag))
{
case 0:
complete_flag = 1;
break;
case 1:
rl_insert_text(buf);
break;
default:
complete_flag = 1;
#ifdef HAVE_RL_DING
rl_ding();
#endif
}
return 0;
}
static int
input_help(int arg, int key UNUSED)
{
int i, in_string, in_bracket;
if (arg != 1)
return rl_insert(arg, '?');
in_string = in_bracket = 0;
for (i = 0; i < rl_point; i++)
{
if (rl_line_buffer[i] == '"')
in_string = ! in_string;
else if (! in_string)
{
if (rl_line_buffer[i] == '[')
in_bracket++;
else if (rl_line_buffer[i] == ']')
in_bracket--;
}
}
/* `?' inside string or path -> insert */
if (in_string || in_bracket)
return rl_insert(1, '?');
rl_begin_undo_group(); /* HACK: We want to display `?' at point position */
rl_insert_text("?");
rl_redisplay();
rl_end_undo_group();
input_start_list();
cmd_help(rl_line_buffer, rl_point);
rl_undo_command(1, 0);
input_stop_list();
return 0;
}
void
input_init(void)
{
rl_readline_name = "birdc";
rl_add_defun("bird-complete", input_complete, '\t');
rl_add_defun("bird-help", input_help, '?');
rl_callback_handler_install("bird> ", input_got_line);
// rl_get_screen_size();
term_lns = LINES;
term_cls = COLS;
prompt_active = 1;
// readline library does strange things when stdin is nonblocking.
// if (fcntl(0, F_SETFL, O_NONBLOCK) < 0)
// die("fcntl: %m");
}
static void
input_reveal(void)
{
/* need this, otherwise some lib seems to eat pending output when
the prompt is displayed */
fflush(stdout);
tcdrain(STDOUT_FILENO);
rl_end = input_hidden_end;
rl_expand_prompt("bird> ");
rl_forced_update_display();
prompt_active = 1;
}
static void
input_hide(void)
{
input_hidden_end = rl_end;
rl_end = 0;
rl_expand_prompt("");
rl_redisplay();
prompt_active = 0;
}
void
input_notify(int prompt)
{
if (prompt == prompt_active)
return;
if (prompt)
input_reveal();
else
input_hide();
}
void
input_read(void)
{
rl_callback_read_char();
}
void
more_begin(void)
{
}
void
more_end(void)
{
}
void
cleanup(void)
{
if (init)
return;
input_hide();
rl_callback_handler_remove();
}
|
