#include <stdio.h>
#include <stdlib.h> // exit()
#include <io.h>
#include <errno.h>
#include <time.h>

char* attribToString(unsigned attrib);
char* timeToString(struct tm *t);


int main(void) {
  _finddatai64_t c_file;
  intptr_t hFile;
  struct tm *t;
  char path[] = "*.*";


  if ( (hFile = _findfirsti64(path, &c_file)) == -1L ) {
    switch (errno) {
      case ENOENT:
        printf(":: 파일이 없음 ::\n"); break;
      case EINVAL:
        fprintf(stderr, "Invalid path name.\n"); exit(1); break;
      case ENOMEM:
        fprintf(stderr, "Not enough memory or file name too long.\n"); exit(1); break;
      default:
        fprintf(stderr, "Unknown error.\n"); exit(1); break;
    }
  } // end if
  else {
    printf("-- 파일 목록 --\n");
    do {
      t = localtime(&c_file.time_write);

      printf("%8I64d  %s %s %s\n",
        c_file.size,
        timeToString(t),
        attribToString(c_file.attrib),
        c_file.name);

    } while (_findnexti64(hFile, &c_file) == 0);
  } // end else
  _findclose(hFile);


  return 0;
}




char* attribToString(unsigned attrib) {
  static char s[4 + 1];

  (attrib & _A_ARCH  ) ? s[0] = 'A' : s[0] = ' ';
  (attrib & _A_RDONLY) ? s[1] = 'R' : s[1] = ' ';
  (attrib & _A_HIDDEN) ? s[2] = 'H' : s[2] = ' ';
  (attrib & _A_SYSTEM) ? s[3] = 'S' : s[3] = ' ';

  return s;
}


char* timeToString(struct tm *t) {
  static char s[20];

  sprintf(s, "%04d-%02d-%02d %02d:%02d:%02d",
              t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
              t->tm_hour, t->tm_min, t->tm_sec
          );

  return s;
}