blob: ea6c5db7a92f8b860b0b7f2e606491086a9432c2 (
plain)
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
|
#include "rc.h"
#include <errno.h>
#include <sys/types.h>
#include "edit.h"
bool editing = 0;
void *edit_init(int fd) {
/* this function deliberately left blank */
return NULL;
}
char *edit_alloc(void *cookie, int *count) {
char *buf;
int size, used;
ssize_t r;
used = 0;
size = 1;
buf = ealloc(size + 1); /* leave room for terminating \0 */
do {
if (used >= size) { /* >= leaves room for terminating \0 */
size = size * 2;
buf = erealloc(buf, size);
}
do {
r = rc_read(0, buf + used, size - used);
sigchk();
if (r == -1)
switch (errno) {
case EAGAIN:
if (!makeblocking(0))
panic("not O_NONBLOCK");
errno = EINTR;
break;
case EIO:
if (makesamepgrp(0))
errno = EINTR;
else
errno = EIO;
break;
}
} while (r < 0 && errno == EINTR);
if (r == 0)
return NULL;
used += r;
buf[used] = '\0';
} while (strchr(buf, '\n') == NULL);
*count = used;
if (used)
return buf;
else
return NULL;
}
void edit_prompt(void *cookie, char *prompt) {
fprint(2, "%s", prompt);
}
void edit_free(void *buffer) {
efree(buffer);
}
void edit_end(void *cookie) {
/* this function deliberately left blank */
}
|