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