_fur | C Darius Ellert Klaus

/*
 * dek.c: isSimilarElement implementation using Hash Table
 */

#include "include/koeva-util-debug.h"
#include <stdio.h>
#include <stdlib.h>
#include <uthash.h>

struct int_hash {
        int id;
        UT_hash_handle hh;
};

struct int_hash * int_hash_create()
{
        struct int_hash * new_row = malloc(sizeof(*new_row));
        ASSERT_MEM(new_row);

        return new_row;

error:
        return NULL;
}

#define int_hash_add(htable, __id) \
        do { \
                typeof(htable) ____cursor = int_hash_create(); \
                ASSERT_MEM(____cursor); \
                ____cursor->id = __id; \
                HASH_ADD_INT(htable, id, ____cursor); \
        } while(0)

#define int_hash_free(htable) \
        do { \
                typeof(htable) ____cursor, ____temp; \
                HASH_ITER(hh, htable, ____cursor, ____temp) { \
                        HASH_DEL(htable, ____cursor); \
                        free(____cursor); \
                } \
        } while(0)

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

        ASSERT(argc > 2, "USAGE : ./dek <input-file-arr1> <input-file-arr2>");

        int temp;
        int ret_flag = 1;
        FILE *in_arr1_file;
        FILE *in_arr2_file;
        struct int_hash *table = NULL;
        struct int_hash *cursor;

        in_arr1_file = fopen(argv[1], "r");
        ASSERT(in_arr1_file, "Could not locate the file: %s\n", argv[1]);

        in_arr2_file = fopen(argv[2], "r");
        ASSERT(in_arr2_file, "Could not locate the file: %s\n", argv[2]);

        fscanf(in_arr1_file, "%d, ", &temp);
        int_hash_add(table, temp);

        while (fscanf(in_arr1_file, "%d, ", &temp) != EOF) {
                HASH_FIND_INT(table, &temp, cursor);
                if(!cursor)
                        int_hash_add(table, temp);
        }

        while (fscanf(in_arr2_file, "%d, ", &temp) != EOF) {
                HASH_FIND_INT(table, &temp, cursor);
                if(cursor) {
                        ret_flag = 0;
                        break;
                }
        }

        printf("COMMON VALUE : %d\n", temp);

        if (ret_flag)
                printf("false\n");
        else
                printf("true\n");

        int_hash_free(table);
        fclose(in_arr1_file);
        fclose(in_arr2_file);

        return 0;
error:
        return -1;
}