/* -*- mode: c -*-
 * $Id: spellcheck.gcc,v 1.7 2001/07/26 14:52:16 doug Exp $
 * http://www.bagley.org/~doug/shootout/
 * with help from Brad Knotwell
 */

#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "simple_hash.h"

#define MAXLINELEN 128

struct ht_ht *dict = NULL;

int handleInput(FILE *input,void (*hashManipFn)(char *))
{
    int wordbufsize = 80,i = 0;
    char *cp, *wordbuf = (char *)malloc(wordbufsize + 1);
    char line[MAXLINELEN];
    
    if((wordbuf = malloc(wordbufsize+1)) == NULL) 
        return(fprintf(stderr,"malloc\n"),0);

    while (fgets(line, MAXLINELEN, input))
    for (cp=line; *cp > 0; cp++) {
        if (isspace(*cp)) {
        if (i) {
            wordbuf[i] = '\0';
                    hashManipFn(wordbuf);
            i = 0;
        }
        } else {
        wordbuf[i++] = *cp;
        if (i == wordbufsize) {
            wordbufsize *= 2;
            if((wordbuf = realloc(wordbuf, wordbufsize + 1)) == NULL)
                        return(fprintf(stderr, "realloc\n"), 0);
        }
        }
        }

    free(wordbuf);
    return(1);
}

void spellCheck(char *key) { 
    if (ht_find_new(dict,key)->val != 1) printf("%s\n",key);
}

void hashLoad(char *key) { ht_find_new(dict,key)->val = 1; }
 
int main(int argc, char *argv[]) {
    FILE *fh;
    int rc;

    /*  
        ht_create doesn't handle malloc and calloc failures 
        so this is superfluous 
    */
    if((dict = ht_create(40000)) == NULL)
        return(fprintf(stderr,"hash creation failed\n"),EXIT_FAILURE);
    
    if ((fh = fopen("Usr.Dict.Words", "r")) == NULL) 
        return(fprintf(stderr,"couldn't open dictionary\n"),EXIT_FAILURE);

    rc = ((handleInput(fh,hashLoad) && handleInput(stdin,spellCheck)) ? EXIT_SUCCESS : EXIT_FAILURE);

    ht_destroy(dict);
    return(rc);
}