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#include <u.h>
#include <libc.h>
#include "base64.h"
void
usage(void)
{
fprint(2, "base64encode [file]\n");
exits("usage");
}
static void
encode(int fd, char *name)
{
int n;
long tot;
char *buf, *outbuf;
buf = nil;
tot = 0;
for(;;){
buf = realloc(buf, tot+8192);
if(buf == nil)
sysfatal("realloc: %r");
if((n = read(fd, buf+tot, 8192)) < 0)
sysfatal("read: %r");
if(n == 0)
break;
tot += n;
}
buf[tot] = 0;
outbuf = malloc(1 + (sizeof(char) * b64d_size(strlen(buf))));
b64_encode(buf, strlen(buf), outbuf);
if((n=write(1, outbuf, strlen(outbuf))) != strlen(outbuf))
sysfatal("writing bytes failed");
}
void
main(int argc, char **argv)
{
int fd;
char *file;
fd = 0;
file = "stdin";
ARGBEGIN{
default:
usage();
}ARGEND
if(argc != 0 && argc != 1)
usage();
if(argc == 1){
file = argv[0];
if((fd = open(file, OREAD)) < 0)
sysfatal("can'topen %s", file);
}
encode(fd, file);
}
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