How to read a file in multiple chunks until EOF (C++)

Question

So, here\'s my problem: I want to make a program that reads chunks of data from a file. Let\'s say, 1024 bytes per chunk. So I read the first 1024 bytes, perform various operati

Answer 1

Accepted answer doesn't work for me - it doesn't read last partial chunk. This does:

void readFile(std::istream &input, UncompressedHandler &handler) {
    std::vector buffer (1024,0); //reads only 1024 bytes at a time
    while (!input.eof()) {
        input.read(buffer.data(), buffer.size());
        std::streamsize dataSize = input.gcount();
        handler({buffer.begin(), buffer.begin() + dataSize});
    }
}

Here UncompressedHandler accepts std::string, so I use constructor from two iterators.