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classpath.vim: Set 'path' from the Java class path

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vim-classpath's Introduction

classpath.vim

This plugin sets the 'path' for JVM languages to match the class path of your current Java project. This lets commands like :find and gf work as designed. I originally wrote it for Clojure, but I see no reason why it wouldn't be handy for other languages as well.

Currently, Maven and Leiningen are supported, with a fallback to $CLASSPATH if neither applies. Open an issue if you have ideas for supporting another project management system.

Included is a :Java command, which executes java (or $JAVA_CMD) with the current buffer's 'path' as the class path.

Installation

If you don't have a preferred installation method, I recommend installing pathogen.vim, and then simply copy and paste:

cd ~/.vim/bundle
git clone git://github.com/tpope/vim-classpath.git

Once help tags have been generated, you can view the manual with :help classpath.

FAQ

Why does it take so long for Vim to startup?

The short answer is because the JVM is slow.

The first time you load a Clojure file from any given project, classpath.vim sets about trying to determine your class path, leveraging either lein classpath or mvn dependency:build-classpath. This takes a couple of seconds or so in the best case scenario, and potentially much longer if it decides to hit the network.

Because the class path is oh-so-expensive to retrieve, classpath.vim caches it in ~/.cache/vim/classpath. The cache is expired when the timestamp on project.clj or pom.xml changes.

Contributing

See the contribution guidelines for pathogen.vim.

Self-Promotion

Like classpath.vim? Follow the repository on GitHub. And if you're feeling especially charitable, follow tpope on Twitter and GitHub.

License

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vim-classpath's Issues

Is it possible to start vim with vim-classpath disabled, then optionally enable it?

This may well be a daft question - I can see that using Pathogen it's possible to disable plugins to prevent them being loaded using pathogen_disabled, but not how to then load them later on if you decide you want them after all. Is there a way to do this either at the pathogen or vim-classpath level?

Reason: I want to be able to load up vim without waiting for the JVM if I want to make a quick edit, and I'm happy to sacrifice being able to use fireplace stuff in those cases. If I'm spending more time in the project then I do want classpath enabled and the load time isn't such a big deal.

Option to get classpath offline

In case a maven repository is down it is impossible to open buffer without killing. It could be helpful to provide an option to user to set offline mode and use lein -o classpath in the plugin, which is significantly faster in general too.

lein classpath should be run with ! not system()

I'm having problems to get vim-classpath to work with GVIM @ Ubuntu 12.04. This can be easily fixed with this diff:

index f578405..8749612 100644
--- a/autoload/classpath.vim
+++ b/autoload/classpath.vim
@@ -123,7 +123,9 @@ function! classpath#detect(...) abort
       let dir = getcwd()
       try
         execute cd . fnameescape(root)
-        let out = system(cmd)
+        redir => out
+        exec 'silent !' cmd
+        redir END
       finally
         execute cd . fnameescape(dir)
       endtry`

There are some differences in how shell commands are run which precludes lein classpath to return something useful. IIRC this also depends on the OS and the version of (G)VIM one uses. I cannot currently remember the details though.

Error with scala buffer

Why is vim classpath messing around with scala files? I did
cd ~/.vim/pathogen ( since pathogen#infect('pathogen/{}') )
git clone git://github.com/tpope/vim-fireplace.git
git clone git://github.com/tpope/vim-classpath.git
vim core/src/main/scala/spark/api/python/PythonPartitioner.scala

"core/src/main/scala/spark/api/python/PythonPartitioner.scala" 48L, 1442C

Couldn't determine class path.

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