int main()

in examples/compact.c [26:73]

• 38 lines of code
• 5 McCabe index (conditional complexity)

int main(int argc, char* argv[]) {
    H3Index input[] = {
        // All with the same parent index
        0x8a2a1072b587fffL, 0x8a2a1072b5b7fffL, 0x8a2a1072b597fffL,
        0x8a2a1072b59ffffL, 0x8a2a1072b58ffffL, 0x8a2a1072b5affffL,
        0x8a2a1072b5a7fffL,
        // These don't have the same parent index as above.
        0x8a2a1070c96ffffL, 0x8a2a1072b4b7fffL, 0x8a2a1072b4a7fffL};
    int inputSize = sizeof(input) / sizeof(H3Index);
    printf("Starting with %d indexes.\n", inputSize);

    H3Index* compacted = calloc(inputSize, sizeof(H3Index));
    int err = compact(input, compacted, inputSize);
    // An error case can occur on e.g. duplicate input.
    assert(err == 0);

    int compactedCount = 0;
    printf("Compacted:\n");
    for (int i = 0; i < inputSize; i++) {
        if (compacted[i] != 0) {
            printf("%" PRIx64 "\n", compacted[i]);
            compactedCount++;
        }
    }
    printf("Compacted to %d indexes.\n", compactedCount);

    int uncompactRes = 10;
    int uncompactedSize = maxUncompactSize(compacted, inputSize, uncompactRes);
    H3Index* uncompacted = calloc(uncompactedSize, sizeof(H3Index));
    int err2 = uncompact(compacted, compactedCount, uncompacted,
                         uncompactedSize, uncompactRes);
    // An error case could happen if the output array is too small, or indexes
    // have a higher resolution than uncompactRes.
    assert(err2 == 0);

    int uncompactedCount = 0;
    printf("Uncompacted:\n");
    for (int i = 0; i < uncompactedSize; i++) {
        if (uncompacted[i] != 0) {
            printf("%" PRIx64 "\n", uncompacted[i]);
            uncompactedCount++;
        }
    }
    printf("Uncompacted to %d indexes.\n", uncompactedCount);

    free(compacted);
    free(uncompacted);
}