-
Notifications
You must be signed in to change notification settings - Fork 9
/
b64enc.c
61 lines (49 loc) · 1.15 KB
/
b64enc.c
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
/*
base64 encoder by David Lazar
Based off of blakesum.c
*/
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "base64encode.h"
#define BUFSIZE 32 * 1024
int main(int argc, char **argv) {
uint8_t buf[BUFSIZE];
char enc[2 * BUFSIZE];
size_t c, i;
char *file;
FILE *fp;
if (argc < 2) {
printf("Usage: %s <file>\n", argv[0]);
return 1;
} else {
file = argv[1];
}
if (strcmp(file, "-") == 0) {
fp = stdin;
freopen(NULL, "rb", stdin);
} else if ((fp = fopen(file, "rb")) == NULL) {
printf("cannot open %s\n", file);
return 1;
}
base64_encodestate S;
base64_encode_init(&S);
while ((c = fread(buf, 1, BUFSIZE, fp)) > 0) {
i = base64_encode_update(&S, buf, c, enc);
fwrite(enc, 1, i, stdout);
if (feof(fp))
break;
}
if (ferror(fp)) {
printf("%s: read error\n", file);
if (fp != stdin)
fclose(fp);
return 1;
}
if (fp != stdin)
fclose(fp);
i = base64_encode_final(&S, enc);
fwrite(enc, 1, i, stdout);
fprintf(stdout, "\n");
return 0;
}