84 lines
2.5 KiB
VimL
84 lines
2.5 KiB
VimL
" MIT License. Copyright (c) 2013 Bailey Ling.
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" vim: et ts=2 sts=2 sw=2
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" http://got-ravings.blogspot.com/2008/10/vim-pr0n-statusline-whitespace-flags.html
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" for backwards compatibility
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if exists('g:airline_detect_whitespace')
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let s:show_message = g:airline_detect_whitespace == 1
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else
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let s:show_message = get(g:, 'airline#extensions#whitespace#show_message', 1)
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endif
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let s:symbol = g:airline_symbols.whitespace
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let s:checks = get(g:, 'airline#extensions#whitespace#checks', ['indent', 'trailing'])
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let s:trailing_format = get(g:, 'airline#extensions#whitespace#trailing_format', 'trailing[%s]')
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let s:mixed_indent_format = get(g:, 'airline#extensions#whitespace#mixed_indent_format', 'mixed-indent[%s]')
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let s:initialized = 0
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let s:enabled = 1
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function! airline#extensions#whitespace#check()
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if &readonly || !s:enabled
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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 = 0
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if index(s:checks, 'trailing') > -1
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let trailing = search(' $', 'nw')
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endif
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let mixed = 0
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if index(s:checks, 'indent') > -1
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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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endif
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if trailing != 0 || mixed
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let b:airline_whitespace_check = s:symbol." "
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if s:show_message
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if trailing != 0
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let b:airline_whitespace_check .= printf(s:trailing_format, 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 .= printf(s:mixed_indent_format, 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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call airline#extensions#append_to_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 s:enabled
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autocmd! airline_whitespace CursorHold,BufWritePost
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let s:enabled = 0
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else
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call airline#extensions#whitespace#init()
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let s:enabled = 1
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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 airline#add_statusline_func('airline#extensions#whitespace#apply')
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endif
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unlet! b:airline_whitespace_check
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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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