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  1. #1
    Registered User
    Join Date
    Sep 2006
    Posts
    10

    Writing bit by bit onto a file

    Hii Folks,

    I am working on Huffman Encoding for compression.In order to reduce the size of files(effectively compress them) I need to replace each character by their coreesponding huffman code.So its highly likely that an 8 bit character by 2-3 bits.

    I was wondering if anybody of you could help in writing bit by bit on a file.

    Regards,
    Sumit

  2. #2
    Super Contributor
    Join Date
    Mar 2003
    Location
    Finland
    Posts
    9,569

    Re: Writing bit by bit onto a file

    Don't write bit-by-bit to a file, but fill a memory buffer bit-by-bit and once you have enough bits to fill at least a byte (or whatever size chunk makes sense; 256 bytes, 512 bytes, 1024 bytes, whatever), write the byte(s) to a file.

    Of course, the last/final bits, if it is not an even byte, by chance, needs to be padded to full 8 bits. And you, of course need to know (store) what's such padding so that you don't mistakenly handle such padding as actual data/content that you need to process.

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