prog/c/cws.c

/* This file creates the file white-space.txt */

#include <stdio.h>
#include <argp.h>

enum boolean { NO, YES };
enum boolean bool = NO;

const char * argp_program_version = "0.1";
/* mail bug reports to */
const char * argp_program_bug_address = "jbranso@fastmail.com";


static const struct argp_option options [] =
  {
    //{"", 'j', "ARG", OPTION_ARG_OPTIONAL, "Print a funny joke" },
    { 0 }
  };

error_t argp_parser (int opt, char *arg, struct argp_state *state) {
  extern enum boolean bool;
  switch (opt)
    {
      // if this parser function is called on an option that it doesn't recognize, then don't do anything.
    default:
      return ARGP_ERR_UNKNOWN;
      /* case 'j': */
      /*   { */
    /*     bool = YES; */
    /*     break; */
    /*   } */
    }
  return 0;
}

struct argp argp =
  { options, argp_parser, 0, "creates a data file white-space.txt" };

int main (int argc, char **argv) {

  argp_parse (&argp, argc, argv, 0, 0, 0);

  FILE * file = fopen("white-space.txt", "w");
  fputs ("This is some serious     \n", file);
  fputs ("white space\n", file);
  fputs ("bro   \n", file);
  fputs ("It totally is.\n", file);
  fputs ("Why did the duck cross the road?     \n", file);
  fputs ("Well that's annoying.\n", file);
  fclose (file);
  return 0;
}