vim-airline/autoload/airline/extensions/whitespace.vim

67 lines
2.1 KiB
VimL

" MIT license. Copyright (c) 2013 Bailey Ling.
" vim: ts=2 sts=2 sw=2 fdm=indent
" http://got-ravings.blogspot.com/2008/10/vim-pr0n-statusline-whitespace-flags.html
let s:initialized = 0
let s:vimrc_detect_whitespace = g:airline_detect_whitespace
function! airline#extensions#whitespace#check()
if &readonly || g:airline_detect_whitespace <= 0
return ''
endif
if !exists('b:airline_whitespace_check')
let b:airline_whitespace_check = ''
let trailing = search(' $', 'nw')
let indents = [search('^ ', 'nb'), search('^ ', 'n'), search('^\t', 'nb'), search('^\t', 'n')]
let mixed = indents[0] != 0 && indents[1] != 0 && indents[2] != 0 && indents[3] != 0
if trailing != 0 || mixed
let b:airline_whitespace_check = g:airline_whitespace_symbol." "
if g:airline_detect_whitespace == 1
if trailing != 0
let b:airline_whitespace_check .= 'trailing['.trailing.'] '
endif
if mixed
let mixnr = indents[0] == indents[1] ? indents[0] : indents[2]
let b:airline_whitespace_check .= 'mixed-indent['.mixnr.'] '
endif
endif
endif
endif
return b:airline_whitespace_check
endfunction!
function! airline#extensions#whitespace#apply()
if exists('w:airline_active') && w:airline_active
if !exists('w:airline_section_warning')
let w:airline_section_warning = ' '
endif
let w:airline_section_warning .= '%{airline#extensions#whitespace#check()}'
endif
endfunction
function! airline#extensions#whitespace#toggle()
if g:airline_detect_whitespace > 0
autocmd! airline_whitespace CursorHold,BufWritePost
let g:airline_detect_whitespace = 0
else
call airline#extensions#whitespace#init()
let g:airline_detect_whitespace = s:vimrc_detect_whitespace
endif
endfunction
function! airline#extensions#whitespace#init()
if !s:initialized
let s:initialized = 1
call add(g:airline_statusline_funcrefs, function('airline#extensions#whitespace#apply'))
endif
augroup airline_whitespace
autocmd!
autocmd CursorHold,BufWritePost * unlet! b:airline_whitespace_check
augroup END
endfunction