Method Decode64

encoding/varint.cpp:135–150

}

const char* Varint::Decode64(const char* p, const char* limit, uint64_t* value) {
    uint64_t result = 0;
    for (uint32_t shift = 0; shift <= 63 && p < limit; shift += 7) {
        uint64_t byte = *(reinterpret_cast<const unsigned char*>(p));
        p++;
        if (byte & kIncompleteMask) {
            // More bytes are present
            result |= ((byte & 127) << shift);
        } else {
            result |= (byte << shift);
            *value = result;
            return reinterpret_cast<const char*>(p);
        }
    }
    return NULL;
}

bool Varint::Get64(StringPiece* input, uint64_t* value) {
    const char* p = input->data();