I work on a little AIR app to generate some AS class with AIR. I browse recursivly some folder and add the file found in a dataProvider to fill a ComboBox if the file extension is .as. I'm trying to do the same with swc file like some flash IDE software does but i don't know how to begin.
A SWC is essentially a ZIP file. If I understand your question correctly, you will need to parse the zip into memory, at least far enough to get the manifest that lists the contained classes.