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Compare text files stored as a cell view

Dear all,

In my library manager, each cell has two or more views that are pure text. These text views store DRC and LVS results. As the PDK changes, I have to compare each DRC/LVS for the current PDK version against the previous one.

I thought that one way to solve this could be done in a similar way to the unix command "diff". In first place, I should have a GUI where the users enter the 2 views that he/she want to compare. Now the problem starts here. How can I get the location of each view to be able to do the comparison ? After having the files, which is the best way to compare them ? Is it, then, possible to save the result into the library manager as a new view ?

Thanks in advance.

Best regards,

Pedro

Andrew Beckett over 8 years ago

Hi Pedro,

If the views are just text views, you can find the contents of the file (the path to it) by using ddGetObjReadPath(ddGetObj("lib" "cell" "view" "*")) or ddGetObj("lib" "cell" "view" "*")~>readPath - the "*" indicates that you want the "master" file for the view.

To compare them, you're probably best using something like the UNIX diff (or tkdiff if you want a nice graphical interface).

You could use the abOpenTextCellView code in this old comp.cad.cadence post, or essentially the same code in this solution. That will give you a convenient SKILL API to build the new view.

Regards,

Andrew.
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netbug over 8 years ago

Hi Andrew,
Thank you very much for your reply, it worked perfectly.
Best regards,
Pedro
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netbug over 8 years ago

Hi Andrew,
What you've described works perfectly, but now I would like to ask the user to click on the cell views he wants using a GUI and read what the user has selected ?

Best regards,
Pedro
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Andrew Beckett over 8 years ago

Hi Pedro.

You'd need to write some code to create a form with (say) a browse button. This post shows some example code which should get you started.

Regards,

Andrew.
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