On Thu May 03 00:00, Paul Cager wrote: > Thanks for submitting this idea - you've reawakened my interest in > compiling a "Java Packagers Wishlist"! > > I think the idea of writing a program to determine Jar dependencies is a > good one, but I'm not sure it can ever be fully automatic, for the > reasons Michael has given above. As such I don't think it would be > appropriate to make it a debhelper dh_xxxxxx command - these are > expected to work flawlessly without the need for any user "tweaking". > > But I think your idea would work very well if integrated into "dh_make". > The expectation of dh_make is that it will make a good "first draft" > which must then be tweaked by the user. (Assuming dh_make is ever > enhanced to recognise Java packages of course). It's a tricky one. A debhelper command in debian/rules is exactly where it _ought_ to be. Does dh_shlibs not have similar problems which they've fixed? > I've got a couple of queries about your program: > > * It's getting late so I may have misread the regular expressions, but > are you only searching for a matching _class_ name (without the package > part). E.g. org.codehaus.plexus.classworlds.realm.Entry might match > against org.someone.else.Entry? Or have I misunderstood your RE? No, it matches the whole path to the package (actually uses the internal package/class representation, which is convenient for finding them in jars) > * Using the "strings" command seems to me a bit unsafe, in that you > could get false positives if there are (normal) strings that end in > "class". I'm not sure if that is a real-life concern, or just my > over-active imagination. Not even that, anything that matches identifier/..../identifier. Ideally I'd write (not in bash) a real byte-code parser which can find the class references properly. This was just a first cut to find what the issues were though. > At this point I should probably confess that I've written a fairly > similar utility myself. It generates a package cross-reference as an > HTML file, and has its own set of problems - e.g. if more than one Jar > provides a class. I've never got around to finishing it, so it's a bit > rough around the edges. cool (-: The other thing I wondered about was a pkg-config-alike for making it easier to write wrappers for Java programs. It would generate the correct classpath for the libraries you use. Something like: #!/bin/sh -- java -cp `pkg-config --classpath libcvs-java libunix-java`:/usr/share/java/myprogram.jar org.me.MyProgram "$@" Incidentally, is: java -cp <a bunch of jars> -jar <my program jar> meant to work?
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