Thank you very much for your example. I was thinking a lot about this task. The headers and sections are big. Each part contains a lot of fields of different things, e.g. single bytes, integers, floats, doubles, some strings, ... . Because of this I would prefer to have the parse logic in each class.

If I understand it right, I would open the file in the main package, then passing the lexical file handle to the constructor of the first class. Parsing the things for e.g. the MainHeader. Then passing the file handle to the ExtHeader class, ... ? Or is it a bad style to pass a file handle to a constructor?

I have no checksum issue. But would be interesting what would you recommend if I had to compute a checksum over all sections although I would like to have the parse logic in each class instead of one central place

Thanks again in advance for your suggestions. I (nearly) always find a way to do my things with perl. But I want to learn how to solve my tasks with a better design and in a better way. That's why I'm asking.

In reply to Re^2: Best way to a parse a big binary file by Dirk80
in thread Best way to a parse a big binary file by Dirk80

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