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bd2c0b935e6b31362278a0f44dfd1d210885c24b
[etc/vim.git] / ftplugin / python_flake8.vim
1 "
2 " Python filetype plugin for running flake8
3 " Language:     Python (ft=python)
4 " Maintainer:   Vincent Driessen <vincent@datafox.nl>
5 " Version:      Vim 7 (may work with lower Vim versions, but not tested)
6 " URL:          http://github.com/nvie/vim-flake8
7 "
8 " Only do this when not done yet for this buffer
9 if exists("b:loaded_flake8_ftplugin")
10     finish
11 endif
12 let b:loaded_flake8_ftplugin=1
13
14 let s:flake8_cmd="flake8"
15
16 if !exists("*Flake8()")
17     function Flake8()
18         if !executable(s:flake8_cmd)
19             echoerr "File " . s:flake8_cmd . " not found. Please install it first."
20             return
21         endif
22
23         set lazyredraw   " delay redrawing
24         cclose           " close any existing cwindows
25
26         " store old grep settings (to restore later)
27         let l:old_gfm=&grepformat
28         let l:old_gp=&grepprg
29
30         " write any changes before continuing
31         if &readonly == 0
32             update
33         endif
34
35         " perform the grep itself
36         let &grepformat="%f:%l:%c: %m\,%f:%l: %m"
37         let &grepprg=s:flake8_cmd
38         silent! grep! %
39
40         " restore grep settings
41         let &grepformat=l:old_gfm
42         let &grepprg=l:old_gp
43
44         " open cwindow
45         let has_results=getqflist() != []
46         if has_results
47             execute 'belowright copen'
48             setlocal wrap
49             nnoremap <buffer> <silent> c :cclose<CR>
50             nnoremap <buffer> <silent> q :cclose<CR>
51         endif
52
53         set nolazyredraw
54         redraw!
55
56         if has_results == 0
57             " Show OK status
58             hi Green ctermfg=green
59             echohl Green
60             echon "Flake8 check OK"
61             echohl
62         endif
63     endfunction
64 endif
65
66 " Add mappings, unless the user didn't want this.
67 " The default mapping is registered under to <F7> by default, unless the user
68 " remapped it already (or a mapping exists already for <F7>)
69 if !exists("no_plugin_maps") && !exists("no_flake8_maps")
70     if !hasmapto('Flake8(')
71         noremap <buffer> <F7> :call Flake8()<CR>
72         noremap! <buffer> <F7> :call Flake8()<CR>
73     endif
74 endif