Can Someone Help With These Eclipse Files?

Is anyone familar with the format of the files in .metadata/.plugins/org.eclipse.core.resources/.projects in the workspace of Eclipse 3.0? I have an Ant task that uses the .classpath file of a project, along with the JDT preferences to build an Ant classpath for a project with an external build file, and I’m now trying to support projects that depend on other projects. I can see from the .classpath file which projects are referenced, either as a “src” type or a “lib” type, depending on how you added it, but I need to actually FIND those projects and get their build info.

I poked around in my workspace and discovered the directory I mentioned above. For each project that Eclipse knows about there is a subdirectory for it. Inside each subdirectory is a file called .location. I can see by looking at this file with a hex editor, that it does indeed contain the full path to the project. But it’s a binary file, and I don’t know the format. Is it documented anywhere?

I also did a little poking around the Eclipse API. I found a ResourcePlugin which sounded useful, but experiments from within Jython were fruitless. I would also like to avoid hooking into the Eclipse API since I’m trying to support multiple versions of Eclipse, but if that’s the only way to get to the data, I’ll do it.

The question, then, can be broken down into three subparts:

  1. Does anyone know the file formats?
  2. Does anyone have a code snippet of using the proper Eclipse API outside of Eclipse to get to the info in those files?
  3. Does anyone have a better solution to this problem?

Since I’ve taken down the writeback feature of this blog, thanks to certain miscreants, if you have a suggestion, please email it to joey@joeygibson.com. Thanks.

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