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/* Copyright (c) 2021 Ben Fuller
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the “Software”),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <unistd.h>
#include <stdio.h>
#include <sys/stat.h>
#include <fcntl.h>
#define BUF_SIZE 1000
const char tbl_base64[] = {
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', '+', '/',
'=' /* termination character */
};
static void usage(const char *name) {
fprintf(stderr, "usage: %s [-d] [FILE]\n", name);
}
char *base64(char *input, unsigned dflg){
return input;
}
int main(int argc, char **argv) {
int c;
unsigned dflg = 0;
const char *name = argv[0];
while ((c = getopt(argc, argv, "dh")) != -1) {
switch(c) {
case 'd':
dflg++;
break;
case 'h':
usage(name);
return 0;
break;
case '?':
usage(name);
return 2;
break;
}
}
/* only work on one file */
if (optind + 1 < argc) {
fprintf(stderr, "too many arguments\n");
usage(name);
return 2;
}
int fd;
if (optind == argc || *argv[optind] == '-') {
fd = STDIN_FILENO;
} else {
if ((fd = open(argv[optind], O_RDONLY)) == -1 ) {
perror(argv[optind]);
return 1;
}
}
char buf[BUF_SIZE] = {'\0'};
if (read(fd, buf, BUF_SIZE) == -1 ) {
perror("read");
return 1;
}
if (close(fd) != 0) {
perror("close");
return 1;
}
char *output = base64(buf, dflg);
printf("%s\n", buf);
printf("%s\n", output);
return 0;
}
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