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726a30afc32139b955ff732c5b47cdc4152ffdf7
[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 if exists("g:flake8_cmd")
16     let s:flake8_cmd=g:flake8_cmd
17 endif
18
19 let s:flake8_ignores=""
20 if exists("g:flake8_ignore")
21     let s:flake8_ignores=" --ignore=".g:flake8_ignore
22 endif
23
24 if !exists("*Flake8()")
25     function Flake8()
26         if !executable(s:flake8_cmd)
27             echoerr "File " . s:flake8_cmd . " not found. Please install it first."
28             return
29         endif
30
31         set lazyredraw   " delay redrawing
32         cclose           " close any existing cwindows
33
34         " store old grep settings (to restore later)
35         let l:old_gfm=&grepformat
36         let l:old_gp=&grepprg
37
38         " write any changes before continuing
39         if &readonly == 0
40             update
41         endif
42
43         " perform the grep itself
44         let &grepformat="%f:%l:%c: %m\,%f:%l: %m"
45         let &grepprg=s:flake8_cmd.s:flake8_ignores
46         silent! grep! %
47
48         " restore grep settings
49         let &grepformat=l:old_gfm
50         let &grepprg=l:old_gp
51
52         " open cwindow
53         let has_results=getqflist() != []
54         if has_results
55             execute 'belowright copen'
56             setlocal wrap
57             nnoremap <buffer> <silent> c :cclose<CR>
58             nnoremap <buffer> <silent> q :cclose<CR>
59         endif
60
61         set nolazyredraw
62         redraw!
63
64         if has_results == 0
65             " Show OK status
66             hi Green ctermfg=green
67             echohl Green
68             echon "Flake8 check OK"
69             echohl
70         endif
71     endfunction
72 endif
73
74 " Add mappings, unless the user didn't want this.
75 " The default mapping is registered under to <F7> by default, unless the user
76 " remapped it already (or a mapping exists already for <F7>)
77 if !exists("no_plugin_maps") && !exists("no_flake8_maps")
78     if !hasmapto('Flake8(')
79         noremap <buffer> <F7> :call Flake8()<CR>
80     endif
81 endif