Coffeescript require formatter vim plugin

require_formatter.vim

" Prettify coffee require statement
" Maintainer: asnowwolf<[email protected]>
" Last Change: 2014-01-01

if exists("g:loaded_require_formatter")
  finish
endif
let g:loaded_require_formatter = 1

function s:format()
  " 取得当前窗口中所有行
  let s:lines = getline(1, '$')
  " 统计所有require语句中name部分的最大长度
  let s:maxLen = 0
  for s:line in s:lines
    let s:tokens = matchlist(s:line, '^\(\w\+\)\s\+')
    if len(s:tokens) > 1
      let s:name = s:tokens[1]
      let s:maxLen = max([strlen(s:name), s:maxLen])
    endif
  endfor

  for s:i in range(1, line('$'))
    let s:line = getline(s:i)
    let s:tokens = matchlist(s:line, '^\(\w\+\)\s\+=\(.*\)$')
    if len(s:tokens) > 2
      let s:name = s:tokens[1]
      let s:value = s:tokens[2]
      let s:newLine = s:name . repeat(' ', s:maxLen - strlen(s:name) + 1) . '=' . s:value
      if s:line != s:newLine
        call setline(s:i, s:newLine)
      endif
    endif
  endfor

endfunc

" change this map if it conflicts with others
map <C-g> :echo <SID>format()<CR>