#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bitVector.h"

void bitPrint(BitVectorPtr bi);

int bitBlock = sizeof(unsigned long) * 8;

BitVectorPtr bitSet(int bitSetPosition) {

    BitVectorPtr bi = (BitVectorPtr)malloc(sizeof(BitVector));
    if (bi == NULL) {
        fprintf(stderr, "Failed to allocate memory.\n");
        exit(-1);
    }

    bi->bitContainer = (unsigned long*)malloc(sizeof(unsigned long)*bi->arrayNum);
    if (bi->bitContainer == NULL) {
        fprintf(stderr, "Failed to allocate memory.\n");
        exit(-1);
    }

    bi->arrayNum = (bitSetPosition + 1) / bitBlock;
    if (((bitSetPosition + 1) % bitBlock) != 0) bi->arrayNum++;

    for (int i = 0; i < bi->arrayNum; i++) {
        bi->bitContainer[i] = 0;
    }
    unsigned long tmp = 1;
    int arrayPosition = 0;

    arrayPosition = bitSetPosition / bitBlock;
    bitSetPosition = bitSetPosition % bitBlock;

    tmp = tmp << (bitBlock - 1 - bitSetPosition);
    bi->bitContainer[arrayPosition] = bi->bitContainer[arrayPosition] | tmp;

    return bi;
}

void bitPrint(BitVectorPtr bi) {
    for (int i = 0; i < bi->arrayNum ; i++) {
        for (int j = bitBlock - 1; j >= 0; j--) {
            printf( "%lu", ( bi->bitContainer[i] >> j ) & 1 );
        }
        printf(" ");
    }
    puts("");
}