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
|
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "gzlib.h"
int main(int argc, char ** argv) {
gzFile fd;
char buf[4096];
int i;
if (argv[1]) {
if (!strcmp(argv[1], "-d")) {
fd = gunzip_dopen(0);
while ((i = gunzip_read(fd, buf, sizeof(buf))) > 0)
if (write(1, buf, i) != i) break;
if (i != 0) {
fprintf(stderr, "error occured: %s\n", strerror(errno));
return -1;
}
} else {
fprintf(stderr, "unknown argument\n");
return -1;
}
} else {
fd = gzip_dopen(1);
while ((i = read(0, buf, sizeof(buf))) > 0)
if (gzip_write(fd, buf, i) != i) break;
if (i != 0) {
fprintf(stderr, "error occured: %s\n", strerror(errno));
return -1;
}
}
return 0;
}
|
