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Thread: About the legality of read-write files of propietary soft.

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    Default About the legality of read-write files of propietary soft.

    I'd want to know your experience and know-how about the legality or not of:

    I have the next question grid :

    Fully Free software LPGL Software Nonfree software
    Read ascii
    Read ascii that has
    some coding

    write ascii
    write scii that has
    some coding

    Read ascii
    Read ascii that has
    some coding

    write binary
    write binary that has
    some coding

    1. In the case of ascii coding we can assume that is easy to discover.
    2. In the case of binary coding, we can assume that some inverse engineering is needed to know how is the structure of the file and the meaning of codes..
    3. We can assume we are doing import - export utilities.
    4. What can be happen if we are writing into an existing file created by the original soft.?

    Thanks

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    Default Re: About the legality of read-write files of propietary soft.

    What is it exactly that you want from us? What is "fully free software"? Is LGPL software not a "fully free software" too?
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

    Please ask Qt related questions on the forum and not using private messages or visitor messages.


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    Default Re: About the legality of read-write files of propietary soft.

    Maybe the whitespaces confuses.....
    I want to you to fill this 'quiz'
    ( Can I read/write files created by other program, for example Excel.Autocad,etc)

    (Yes is legal, No is not legal)

    ---------------------------- Fully Free software --------LPGL Software -------------- NON free software
    Read ascii ..................................... Yes .......................... Yes .............................. NO
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    Read ascii that has ......................... Yes .......................... Yes .............................. NO
    some coding
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    write ascii
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    write ascii that has
    some coding
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    Read binari
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    Read binary that has
    some coding
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    write binary
    ------------------------------ ------------------------------ --------------------------------- ----------------------
    write binary that has
    some coding
    ------------------------------ ------------------------------ --------------------------------- ----------------------

    1. In the case of ascii coding we can assume that is easy to discover.
    2. In the case of binary coding, we can assume that some inverse engineering is needed to know how is the structure of the file and the meaning of codes..
    3. We can assume we are doing import - export utilities.
    4. What can be happen if we are writing into an existing file created by the original soft.?


    ( In other words can I read-write autocad DWG files / PDF / MS word doc ...)

    Thanks
    Last edited by tonnot; 31st March 2011 at 18:51.

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    Default Re: About the legality of read-write files of propietary soft.

    What does licencing of the program has to do with file formats it uses? Reverse engineering is either allowed in your country or forbidden. Licence of the application is irrelevant. Just consider MS Word and Adobe Acrobat - both are "non-free" as you call it yet 1) there exist programs operating on the same file formats and 2) PDF specification is well known while doc specification has never been published.
    Your biological and technological distinctiveness will be added to our own. Resistance is futile.

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