1 " pydoc.vim 0.4 (initial public version)
2 " Allow the user to pull pydoc information into Vim
3 " Mike Repass <theopenroad@gmail.com>
7 " Put this in ftplugin/python/ or just manually source it using a FileType
8 " autocommand in your vimrc. It registers the command Pydoc (try ':Pydoc re'
9 " for regular expression docs). Also, it remaps K so that you can position the
10 " cursor over a module or module.method etc and hit K to bring up the docs.
11 " Make sure PYDOC_CMD points to the pydoc script. I use a 'pydoc.bat' batch
12 " file on my WinXP system.
14 " A nice little side effect of using this is that the documentation buffers
15 " become sources for keyword completion. For instance, say you're working on a
16 " program that uses urllib2 and you're having trouble remembering the methods.
17 " Simply do a ':Pydoc urllib2' and close the window. The buffer will remain
18 " hidden and Ctrl-N and Ctrl-P will pick up all the text when you need to
21 " Btw just doing ':Pydoc modules' should bring up a list of all available
22 " modules. Very handy just to leave open, as you can now just press 'K' over a
23 " module to load it up.
26 " The 'cleanest' or most 'pythonic' way to do this would be use the
27 " vim-python interface and write some supporting python code to manually
28 " import pydoc and call the associated functions. However, I don't always use
29 " the version of python for which my vim is compiled, so I decided to
30 " externally call the pydoc script. Also, it sets up the buffers to go
31 " 'hidden' when closed, so that when you do the same Pydoc command again, it
32 " will load the buffer and thus avoid the overhead of the external call
33 " (basically a cheap cache system). If you don't want this, set the NO_HIDE
37 " I am not aware of any major bugs, but of course there are some minor
38 " interface glitches. For instance, if you put the cursor over an operator
39 " which also has significance in your particular shell, invoking the command
40 " might result in a shell error. I feel having some little 'oopses' like this
41 " is pretty inevitable, but I'll be happy to work on anything that causes you
42 " problems. If you come across any bug you feel impairs your ability to use
43 " Vim, drop me an email and I'll get right on it.
46 let s:PYDOC_CMD = "pydoc" " this must point to the pydoc script
47 let s:NO_HIDE = 0 " when 1, pydoc buffers will be deleted (instead of hidden)
50 com! -nargs=+ Pydoc call <SID>:PydocLoad("<args>")
52 " remap the K (or 'help') key
53 nnoremap <silent> <buffer> K :call <SID>:KeyPydocLoad(expand("<cWORD>"))<Cr>
55 " prepares the cWORD argument for PydocLoad...
56 func! <SID>:KeyPydocLoad(cword)
57 " make sure we got something
61 " we want the current WORD just up to the first parenthesis
62 " this allows us to get math.acos from math.acos(.2) etc
63 let prep = substitute(a:cword, "\(.*", "", "")
64 call <SID>:PydocLoad(prep)
67 " opens a new buffer, filling it with the result of calling pydoc with pyargs
68 func! <SID>:PydocLoad(pyargs)
69 " first, check if we've already loaded the pydoc info for this search and
70 " if so, open it and bail... this creates an ad hoc caching mechanism
71 let window_name = "pydoc - " . a:pyargs
72 if bufloaded(window_name)
73 exec "new " . window_name
77 " build and execute the command
78 let cmd = "new +r!" . escape(s:PYDOC_CMD," ") " new buff, call pydoc
79 let cmd = cmd . "\\ " . escape(a:pyargs," ") " the pydoc args
80 let cmd = cmd . " " . window_name " the name of the window
86 \ echomsg "Error occurred while attempting to invoke Pydoc." |
92 " make sure the command succeeded and we're in the right buffer
93 if bufname("") != "pydoc - " . a:pyargs
94 " hmmm something didn't work... lets bail
98 " roll back, delete empty lines at beginning
100 while getline(1) =~ "^\s\*$"
104 " set some convenient options to avoid error messages etc
105 setlocal nomodifiable
106 setlocal buftype=nowrite
107 setlocal bufhidden=hide
109 setlocal bufhidden=delete
112 " bail if no documentation was found
113 if getline(1) =~ "^no Python documentation found"
115 \ echohl WarningMsg |
116 \ echomsg "No Python documentation for " . a:pyargs |
118 setlocal bufhidden=delete
123 " key map to these functions for these buffers
124 nnoremap <silent> <buffer> K :call <SID>:KeyPydocLoad(expand("<cWORD>"))<Cr>
126 " some _very_ basic syntax highlighting
127 syn match pydocTitle "^[A-Z]\+$"
128 hi link pydocTitle Tag