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Mass compare SCH and BRD files

CalebCZ

Hi all, I occassionaly "teach" Eagle. The "students" are required to make a simple project to prove they know to use it. And of course, some of them like to cheat, so they copy large part (or entire) project from other "students". Therefore, I need some way to compare many SCH and BRD files and compute percentage difference between their contents. Classical duplicity finder programs (CloneSpy etc.) are unusable for this task, because if the cheaters make even the slightest modification to the files, they will regard them as "unique". The new Eagle files use XML format, which makes things somewhat easier. But, all tools I found for XML comparison can compare only 2 or 3 files at once, whereas I need to compare dozens.

 

Is there some tool (standalone XML/text analysis program, Eagle ULP, python script, whatever) which could find and make a list of very similar files, preferably sorted by percentage of their similarity?

  • On 5/7/2014 7:03 AM, Caleb Dead wrote:

    Hi all, I occassionaly "teach" Eagle. The "students" are required to

    make a simple project to prove they know to use it. And of course, some

    of them like to cheat, so they copy large part (or entire) project from

    other "students". Therefore, I need some way to compare many SCH and BRD

    files and compute percentage difference between their contents.

    Classical duplicity finder programs (CloneSpy etc.) are unusable for

    this task, because if the cheaters make even the slightest modification

    to the files, they will regard them as "unique". The new Eagle files use

    XML format, which makes things somewhat easier. But, all tools I found

    for XML comparison can compare only 2 or 3 files at once, whereas I need

    to compare dozens.

     

    Hi Caleb,

     

    I don't know of any particular tools for this task, but there's a good

    video on using EAGLE in an educational environment by Prof. Taylor

    Morey. He offers some solutions to cheating, such as forcing students to

    put their names in all of the library parts and a few other tips. Give

    it a watch, I'm sure you'll find the material helpful.

     

    http://www.element14.com/community/videos/8725/l/how-to-implement-eagle-in-a-educational-environment

     

    hth,

    Jorge Garcia