85 lines
2.7 KiB
VimL
85 lines
2.7 KiB
VimL
" MIT License. Copyright (c) 2013-2014 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 = get(g:, 'airline#extensions#whitespace#symbol', g:airline_symbols.whitespace)
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let s:default_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:max_lines = get(g:, 'airline#extensions#whitespace#max_lines', 20000)
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let s:enabled = 1
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function! airline#extensions#whitespace#check()
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if &readonly || !&modifiable || !s:enabled || line('$') > s:max_lines
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return ''
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endif
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if !exists('b:airline_whitespace_check')
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let b:airline_whitespace_check = ''
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let checks = get(g:, 'airline#extensions#whitespace#checks', s:default_checks)
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let trailing = 0
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if index(checks, 'trailing') > -1
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let trailing = search('\s$', 'nw')
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endif
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let mixed = 0
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if index(checks, 'indent') > -1
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" [<tab>]<space><tab>
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" Spaces before or between tabs are not allowed
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let t_s_t = '(^\t* +\t\s*\S)'
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" <tab>(<space> x count)
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" Count of spaces at the end of tabs should be less then tabstop value
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let t_l_s = '(^\t+ {' . &ts . ',}' . '\S)'
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let mixed = search('\v' . t_s_t . '|' . t_l_s, 'nw')
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endif
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if trailing != 0 || mixed != 0
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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 .= (g:airline_symbols.space).printf(s:trailing_format, trailing)
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endif
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if mixed != 0
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let b:airline_whitespace_check .= (g:airline_symbols.space).printf(s:mixed_indent_format, mixed)
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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#toggle()
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if s:enabled
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autocmd! airline_whitespace CursorHold,BufWritePost
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augroup! airline_whitespace
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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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echo 'Whitespace checking: '.(s:enabled ? 'Enabled' : 'Disabled')
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endfunction
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function! airline#extensions#whitespace#init(...)
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call airline#parts#define_function('whitespace', 'airline#extensions#whitespace#check')
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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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