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This library is a low level parser for the OpenAccess file format.


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Given the OpenOffice/Microsoft Office competing formats of the past and the Google/Oracle Java fighting over source code, it doesn't make sense to compete on a file format. As it stands to reason, learning a file format for interoperability purposes is not only legal in the United States, users prefer this, as it gives them, the owners of the data, more access, and control of what is truly theirs. Their DATA.

Therefore, instead of creating a new file format for the Electronic Design Automation industry's design data, using a pre-existing format and creating a library to read and write the well-known design data is the only logical solution. This library does just that.


The oaFileParser verifies OpenAccess file types including *.oa and tech.db files. The parser mechanism exposes the design data with callback functionality.


This library only parses, at the lowest level, the information contained in the OpenAccess files. It does not provide an API to store this data in any persistent manner. This is where the programmer must add their implementation on top of this library to make the data useful.

Get Involved

If you or your company would like to participate in this project, please email us at If you want to do simple code or documentation fixes but do not want to be a participating party, please take a look at these instructions on how to create a new pull request

If you would like to ensure that this library covers a particular file or coverage of data in a file, please email us a test case file at or check it into the testData directory by following these instructions: Please do not check-in any data that you don't want shared with the world. We do not take any responsibility for design data that is part of this repository.

The Test Data

Make sure you pull down this repository using the recursive flag.

git clone --recursive

If you don't pull down the recursive test data, then you will need to supply your own.

You can also pull down example test files from

Understanding the File Format

Please checkout these links for more information about how the data tree structures work:


This library is a low level parser for the OpenAccess file format.








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