" Private Functions {{{1
function! s:SetBufferOptDefault(opt, val) "{{{2
  if !exists('b:' . a:opt)
    let b:{a:opt} = a:val
  endif
endfunction

function! s:Map(map, to, mode) "{{{2
  if !empty(a:to) && !hasmapto(a:map, a:mode)
    for l:mode in split(a:mode, '.\zs')
      execute l:mode . 'map <buffer>' a:to a:map
    endfor
  endif
endfunction

function! s:UnMap(map, mode) "{{{2
  if !empty(maparg(a:map, a:mode))
    for mode in split(a:mode, '.\zs')
      execute l:mode . 'unmap <buffer>' a:map
    endfor
  endif
endfunction

function! s:ToggleMapping() "{{{2
  if !g:table_mode_disable_mappings
    if tablemode#IsActive()
      call s:Map('<Plug>(table-mode-tableize)', g:table_mode_separator_map, 'i')
      call s:Map('<Plug>(table-mode-motion-up)', g:table_mode_motion_up_map, 'n')
      call s:Map('<Plug>(table-mode-motion-down)', g:table_mode_motion_down_map, 'n')
      call s:Map('<Plug>(table-mode-motion-left)', g:table_mode_motion_left_map, 'n')
      call s:Map('<Plug>(table-mode-motion-right)', g:table_mode_motion_right_map, 'n')

      call s:Map('<Plug>(table-mode-cell-text-object-a)', g:table_mode_cell_text_object_a_map, 'ox')
      call s:Map('<Plug>(table-mode-cell-text-object-i)', g:table_mode_cell_text_object_i_map, 'ox')

      call s:Map('<Plug>(table-mode-realign)', g:table_mode_realign_map, 'n')
      call s:Map('<Plug>(table-mode-delete-row)', g:table_mode_delete_row_map, 'n')
      call s:Map('<Plug>(table-mode-delete-column)', g:table_mode_delete_column_map, 'n')
      call s:Map('<Plug>(table-mode-insert-column-before)', g:table_mode_insert_column_before_map, 'n')
      call s:Map('<Plug>(table-mode-insert-column-after)', g:table_mode_insert_column_after_map, 'n')
      call s:Map('<Plug>(table-mode-add-formula)', g:table_mode_add_formula_map, 'n')
      call s:Map('<Plug>(table-mode-eval-formula)', g:table_mode_eval_formula_map, 'n')
      call s:Map('<Plug>(table-mode-echo-cell)', g:table_mode_echo_cell_map, 'n')
      call s:Map('<Plug>(table-mode-sort)', g:table_mode_sort_map, 'n')
    else
      call s:UnMap(g:table_mode_separator_map, 'i')
      call s:UnMap(g:table_mode_motion_up_map, 'n')
      call s:UnMap(g:table_mode_motion_down_map, 'n')
      call s:UnMap(g:table_mode_motion_left_map, 'n')
      call s:UnMap(g:table_mode_motion_right_map, 'n')

      call s:UnMap(g:table_mode_cell_text_object_a_map, 'ox')
      call s:UnMap(g:table_mode_cell_text_object_i_map, 'ox')

      call s:UnMap(g:table_mode_realign_map, 'n')
      call s:UnMap(g:table_mode_delete_row_map, 'n')
      call s:UnMap(g:table_mode_delete_column_map, 'n')
      call s:UnMap(g:table_mode_insert_column_before_map, 'n')
      call s:UnMap(g:table_mode_insert_column_after_map, 'n')
      call s:UnMap(g:table_mode_add_formula_map, 'n')
      call s:UnMap(g:table_mode_eval_formula_map, 'n')
      call s:UnMap(g:table_mode_echo_cell_map, 'n')
      call s:UnMap(g:table_mode_sort_map, 'n')
    endif
  endif
endfunction

function! s:ToggleSyntax() "{{{2
  if !g:table_mode_syntax | return | endif

  if tablemode#IsActive()
    exec 'syntax match Table'
          \ '/' . tablemode#table#StartExpr() . '\zs|.\+|\ze' . tablemode#table#EndExpr() . '/'
          \ 'contains=TableBorder,TableSeparator,TableColumnAlign,yesCell,noCell,maybeCell'
          \ 'containedin=ALL'
    syntax match TableSeparator /|/ contained
    syntax match TableColumnAlign /:/ contained
    syntax match TableBorder /[\-+]\+/ contained

    hi! link TableBorder Delimiter
    hi! link TableSeparator Delimiter
    hi! link TableColumnAlign Type

    if exists("g:table_mode_color_cells") && g:table_mode_color_cells
      syntax match yesCell '[^|]*yes[^|]*'
      syntax match noCell ' *no[^|]*'
      syntax match maybeCell ' *?[^|]*'
    endif

  else
    syntax clear Table
    syntax clear TableBorder
    syntax clear TableSeparator
    syntax clear TableColumnAlign

    hi! link TableBorder NONE
    hi! link TableSeparator NONE
    hi! link TableColumnAlign NONE
  endif
endfunction

function! s:ToggleAutoAlign() "{{{2
  if !g:table_mode_auto_align | return | endif

  if tablemode#IsActive()
    augroup TableModeAutoAlign
      au!

      autocmd CursorHold <buffer> nested silent! if &modified | call tablemode#table#Realign('.') | endif
      " autocmd InsertLeave <buffer> nested silent! if &modified | call tablemode#table#Realign('.') | endif
    augroup END
  else
    autocmd! TableModeAutoAlign
  endif
endfunction

function! s:ToggleOptions() "{{{2
  if tablemode#IsActive()
    let b:old_update_time = &updatetime
    exec 'set updatetime='.g:table_mode_update_time
  else
    exec 'set updatetime='.get(b:, 'old_update_time', 4000)
  endif
endfunction

function! s:SetActive(bool) "{{{2
  let b:table_mode_active = a:bool
  call s:ToggleSyntax()
  call s:ToggleMapping()
  call s:ToggleAutoAlign()
  call s:ToggleOptions()
  if tablemode#IsActive()
    doautocmd User TableModeEnabled
  else
    doautocmd User TableModeDisabled
  endif
endfunction

function! s:ConvertDelimiterToSeparator(line, ...) "{{{2
  let old_gdefault = &gdefault
  set nogdefault

  let delim = g:table_mode_delimiter
  if a:0 | let delim = a:1 | endif
  if delim ==# ','
    silent! execute a:line . 's/' . "[\'\"][^\'\"]*\\zs,\\ze[^\'\"]*[\'\"]/__COMMA__/g"
  endif

  let [cstart, cend] = [tablemode#table#GetCommentStart(), tablemode#table#GetCommentEnd()]
  let [match_char_start, match_char_end] = ['.', '.']
  if tablemode#utils#strlen(cend) > 0 | let match_char_end = '[^' . cend . ']' | endif
  if tablemode#utils#strlen(cstart) > 0 | let match_char_start = '[^' . cstart . ']' | endif

  silent! execute a:line . 's/' . tablemode#table#StartExpr() . '\zs\ze' . match_char_start .
        \ '\|' . delim .  '\|' . match_char_end . '\zs\ze' . tablemode#table#EndExpr() . '/' .
        \ g:table_mode_separator . '/g'

  if delim ==# ','
    silent! execute a:line . 's/' . "[\'\"][^\'\"]*\\zs__COMMA__\\ze[^\'\"]*[\'\"]/,/g"
  endif

  let &gdefault=old_gdefault
endfunction

function! s:Tableizeline(line, ...) "{{{2
  let delim = g:table_mode_delimiter
  if a:0 && type(a:1) == type('') && !empty(a:1) | let delim = a:1[1:-1] | endif
  call s:ConvertDelimiterToSeparator(a:line, delim)
endfunction

" Public API {{{1
function! tablemode#IsActive() "{{{2
  if g:table_mode_always_active | return 1 | endif

  call s:SetBufferOptDefault('table_mode_active', 0)
  return b:table_mode_active
endfunction

function! tablemode#TableizeInsertMode() "{{{2
  if tablemode#IsActive()
    if getline('.') =~# (tablemode#table#StartExpr() . g:table_mode_separator . g:table_mode_separator . tablemode#table#EndExpr())
      call tablemode#table#AddBorder('.')
      normal! A
    elseif getline('.') =~# (tablemode#table#StartExpr() . g:table_mode_separator)
      let column = tablemode#utils#strlen(substitute(getline('.')[0:col('.')], '[^' . g:table_mode_separator . ']', '', 'g'))
      let position = tablemode#utils#strlen(matchstr(getline('.')[0:col('.')], '.*' . g:table_mode_separator . '\s*\zs.*'))
      call tablemode#table#Realign('.')
      normal! 0
      call search(repeat('[^' . g:table_mode_separator . ']*' . g:table_mode_separator, column) . '\s\{-\}' . repeat('.', position), 'ce', line('.'))
    endif
  endif
endfunction

function! tablemode#Enable() "{{{2
  call s:SetActive(1)
endfunction

function! tablemode#Disable() "{{{2
  call s:SetActive(0)
endfunction

function! tablemode#Toggle() "{{{2
  if g:table_mode_always_active
    return 1
  endif

  call s:SetBufferOptDefault('table_mode_active', 0)
  call s:SetActive(!b:table_mode_active)
endfunction

function! tablemode#TableizeRange(...) range "{{{2
  let lnum = a:firstline
  let total = (a:lastline - a:firstline + 1)
  " echom total
  let cntr = 1
  while cntr <= total
    call s:Tableizeline(lnum, a:1)
    undojoin
    if g:table_mode_tableize_auto_border
      if cntr == 1
        normal! O
        call tablemode#table#AddBorder('.')
        normal! j
        let lnum += 1
      endif
      normal! o
      call tablemode#table#AddBorder('.')
      let lnum += 1
    endif
    let cntr += 1
    let lnum += 1
  endwhile

  call tablemode#table#Realign(lnum - 1)
endfunction

function! tablemode#TableizeByDelimiter() "{{{2
  let delim = input('/')
  if delim =~# "\<Esc>" || delim =~# "\<C-C>" | return | endif
  let vm = visualmode()
  if vm ==? 'line' || vm ==? 'V'
    exec line("'<") . ',' . line("'>") . "call tablemode#TableizeRange('/' . delim)"
  endif
endfunction

if !hlexists('yesCell') | hi yesCell cterm=bold ctermfg=10 ctermbg=2 | endif |
if !hlexists('noCell') | hi noCell cterm=bold ctermfg=9 ctermbg=1 | endif |
if !hlexists('maybeCell') | hi maybeCell cterm=bold ctermfg=11 ctermbg=3 | endif |