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
|
/* See LICENSE file for copyright and license details. */
#include "stream.h"
#include "util.h"
#include <string.h>
USAGE("")
int
main(int argc, char *argv[])
{
struct stream stream;
char *buf;
size_t m, fptr, sptr, same = 0, diff = 0;
UNOFLAGS(argc);
eopen_stream(&stream, NULL);
echeck_dimensions(&stream, WIDTH | HEIGHT, NULL);
fprint_stream_head(stdout, &stream);
efflush(stdout, "<stdout>");
buf = ecalloc(1, stream.frame_size);
fptr = 0;
do {
sptr = 0;
again:
while (same) {
m = MIN(same, stream.frame_size - fptr);
ewriteall(STDOUT_FILENO, buf + fptr, m, "<stdout>");
fptr = (fptr + m) % stream.frame_size;
same -= m;
}
while (diff && sptr < stream.ptr) {
m = MIN(diff, stream.frame_size - fptr);
m = MIN(m, stream.ptr - sptr);
memcpy(buf + fptr, stream.buf + sptr, m);
ewriteall(STDOUT_FILENO, buf + fptr, m, "<stdout>");
fptr = (fptr + m) % stream.frame_size;
diff -= m;
sptr += m;
}
if (diff || sptr + 2 * sizeof(size_t) > stream.ptr) {
memmove(stream.buf, stream.buf + sptr, stream.ptr -= sptr);
} else {
same = ((size_t *)(stream.buf + sptr))[0];
diff = ((size_t *)(stream.buf + sptr))[1];
sptr += 2 * sizeof(size_t);
goto again;
}
} while (eread_stream(&stream, SIZE_MAX));
free(buf);
if (same || diff)
eprintf("<stdin>: corrupt input\n");
return 0;
}
|
