binc.c

#include <stdint.h>
#include <stdio.h>

#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>

int main(int argc, char **argv) {
  if (argc != 2) {
    printf("Usage: binc [input]\n");
    return 0;
  }
  int fd = open(argv[1], O_RDONLY);
  if (!fd) {
    return 1;
  }
  struct stat statbuf;
  fstat(fd, &statbuf);
  printf("uint8_t bin[%ld] = {", statbuf.st_size);
  uint8_t buf[8 * 1024];
  size_t n;
  int first = 1;
  while ((n = read(fd, buf, sizeof(buf))) > 0) {
    for (size_t i = 0; i < n; i++) {
      if (!first)
        putchar(',');
      else
        first = 0;
      printf("0x%02X", buf[i]);
    }
  }
  printf("};");
  close(fd);
  return 0;
}