Trying to reimplement getopt for Fun

getopt.c

/****************************************************************************/
/* Copyright (c) 2011, Vasudev Kamath <[email protected]>             */
/*                                                                          */
/* Permission to use, copy, modify, and/or distribute this software for any */
/* purpose with or without fee is hereby granted, provided that the above   */
/* copyright notice and this permission notice appear in all copies.        */
/*                                                                          */
/* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES */
/* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF         */
/* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  */
/* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES   */
/* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN    */
/* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  */
/* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.           */
/****************************************************************************/



#include "getopt.h"
#include <stdlib.h>
#include <string.h>

Options *getopt(int number, char **arguments){
    Options *options = malloc(sizeof(Options));
    int i = 0;
    int j = 0,k = 0;

    char *buffer = NULL;

    options->command = arguments[0];

    for (i = number-1; i >= 1; i--){
        buffer = arguments[i];
        if (buffer[0] == '-'){
            /* This is option  */
            options->short_options = realloc(options->short_options,sizeof(char*)*1);
            options->short_options[j++] = buffer;
        }else {
            /* this is argument */
            options->other_args = realloc(options->other_args,sizeof(char*)*1);
            options->other_args[k++] = buffer;
        }
    }

    return options;
}


int main(int argc, char *argv[])
{
    Options *opt = NULL;
    /* if(argc < 2){ */
    /*     fprintf(stderr,"Insufficient Arguments\n"); */
    /*     exit(1); */
    /* } */

    opt = getopt(argc,argv);

    printf ("Command used %s\n",opt->command);

    if(opt->short_options != NULL){
        printf ("Options Present\n");
    }

    if(opt->other_args != NULL){
        printf ("Arguments are present\n");
    }
    
    return 0;
}