Add livescript, closes #135

ftplugin/ls.vim

@@ -0,0 +1,208 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'livescript') == -1
+  
+" Language:    LiveScript
+" Maintainer:  George Zahariev
+" URL:         http://github.com/gkz/vim-ls
+" License:     WTFPL
+"
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let b:did_ftplugin = 1
+
+setlocal formatoptions-=t formatoptions+=croql
+setlocal comments=:#
+setlocal commentstring=#\ %s
+setlocal omnifunc=javascriptcomplete#CompleteJS
+
+" Enable LiveScriptMake if it won't overwrite any settings.
+if !len(&l:makeprg)
+  compiler ls
+endif
+
+" Check here too in case the compiler above isn't loaded.
+if !exists('livescript_compiler')
+  let livescript_compiler = 'lsc'
+endif
+
+" Reset the LiveScriptCompile variables for the current buffer.
+function! s:LiveScriptCompileResetVars()
+  " Compiled output buffer
+  let b:livescript_compile_buf = -1
+  let b:livescript_compile_pos = []
+
+  " If LiveScriptCompile is watching a buffer
+  let b:livescript_compile_watch = 0
+endfunction
+
+" Clean things up in the source buffer.
+function! s:LiveScriptCompileClose()
+  exec bufwinnr(b:livescript_compile_src_buf) 'wincmd w'
+  silent! autocmd! LiveScriptCompileAuWatch * <buffer>
+  call s:LiveScriptCompileResetVars()
+endfunction
+
+" Update the LiveScriptCompile buffer given some input lines.
+function! s:LiveScriptCompileUpdate(startline, endline)
+  let input = join(getline(a:startline, a:endline), "\n")
+
+  " Move to the LiveScriptCompile buffer.
+  exec bufwinnr(b:livescript_compile_buf) 'wincmd w'
+
+  " LiveScript doesn't like empty input.
+  if !len(input)
+    return
+  endif
+
+  " Compile input.
+  let output = system(g:livescript_compiler . ' -scb 2>&1', input)
+
+  " Be sure we're in the LiveScriptCompile buffer before overwriting.
+  if exists('b:livescript_compile_buf')
+    echoerr 'LiveScriptCompile buffers are messed up'
+    return
+  endif
+
+  " Replace buffer contents with new output and delete the last empty line.
+  setlocal modifiable
+    exec '% delete _'
+    put! =output
+    exec '$ delete _'
+  setlocal nomodifiable
+
+  " Highlight as JavaScript if there is no compile error.
+  if v:shell_error
+    setlocal filetype=
+  else
+    setlocal filetype=javascript
+  endif
+
+  call setpos('.', b:livescript_compile_pos)
+endfunction
+
+" Update the LiveScriptCompile buffer with the whole source buffer.
+function! s:LiveScriptCompileWatchUpdate()
+  call s:LiveScriptCompileUpdate(1, '$')
+  exec bufwinnr(b:livescript_compile_src_buf) 'wincmd w'
+endfunction
+
+" Peek at compiled LiveScript in a scratch buffer. We handle ranges like this
+" to prevent the cursor from being moved (and its position saved) before the
+" function is called.
+function! s:LiveScriptCompile(startline, endline, args)
+  if !executable(g:livescript_compiler)
+    echoerr "Can't find LiveScript compiler `" . g:livescript_compiler . "`"
+    return
+  endif
+
+  " If in the LiveScriptCompile buffer, switch back to the source buffer and
+  " continue.
+  if !exists('b:livescript_compile_buf')
+    exec bufwinnr(b:livescript_compile_src_buf) 'wincmd w'
+  endif
+
+  " Parse arguments.
+  let watch = a:args =~ '\<watch\>'
+  let unwatch = a:args =~ '\<unwatch\>'
+  let size = str2nr(matchstr(a:args, '\<\d\+\>'))
+
+  " Determine default split direction.
+  if exists('g:livescript_compile_vert')
+    let vert = 1
+  else
+    let vert = a:args =~ '\<vert\%[ical]\>'
+  endif
+
+  " Remove any watch listeners.
+  silent! autocmd! LiveScriptCompileAuWatch * <buffer>
+
+  " If just unwatching, don't compile.
+  if unwatch
+    let b:livescript_compile_watch = 0
+    return
+  endif
+
+  if watch
+    let b:livescript_compile_watch = 1
+  endif
+
+  " Build the LiveScriptCompile buffer if it doesn't exist.
+  if bufwinnr(b:livescript_compile_buf) == -1
+    let src_buf = bufnr('%')
+    let src_win = bufwinnr(src_buf)
+
+    " Create the new window and resize it.
+    if vert
+      let width = size ? size : winwidth(src_win) / 2
+
+      belowright vertical new
+      exec 'vertical resize' width
+    else
+      " Try to guess the compiled output's height.
+      let height = size ? size : min([winheight(src_win) / 2,
+      \                               a:endline - a:startline + 5])
+
+      belowright new
+      exec 'resize' height
+    endif
+
+    " We're now in the scratch buffer, so set it up.
+    setlocal bufhidden=wipe buftype=nofile
+    setlocal nobuflisted nomodifiable noswapfile nowrap
+
+    autocmd BufWipeout <buffer> call s:LiveScriptCompileClose()
+    " Save the cursor when leaving the LiveScriptCompile buffer.
+    autocmd BufLeave <buffer> let b:livescript_compile_pos = getpos('.')
+
+    nnoremap <buffer> <silent> q :hide<CR>
+
+    let b:livescript_compile_src_buf = src_buf
+    let buf = bufnr('%')
+
+    " Go back to the source buffer and set it up.
+    exec bufwinnr(b:livescript_compile_src_buf) 'wincmd w'
+    let b:livescript_compile_buf = buf
+  endif
+
+  if b:livescript_compile_watch
+    call s:LiveScriptCompileWatchUpdate()
+
+    augroup LiveScriptCompileAuWatch
+      autocmd InsertLeave <buffer> call s:LiveScriptCompileWatchUpdate()
+      autocmd BufWritePost <buffer> call s:LiveScriptCompileWatchUpdate()
+    augroup END
+  else
+    call s:LiveScriptCompileUpdate(a:startline, a:endline)
+  endif
+endfunction
+
+" Complete arguments for the LiveScriptCompile command.
+function! s:LiveScriptCompileComplete(arg, cmdline, cursor)
+  let args = ['unwatch', 'vertical', 'watch']
+
+  if !len(a:arg)
+    return args
+  endif
+
+  let match = '^' . a:arg
+
+  for arg in args
+    if arg =~ match
+      return [arg]
+    endif
+  endfor
+endfunction
+
+" Don't overwrite the CoffeeCompile variables.
+if !exists("s:livescript_compile_buf")
+  call s:LiveScriptCompileResetVars()
+endif
+
+" Peek at compiled LiveScript.
+command! -range=% -bar -nargs=* -complete=customlist,s:LiveScriptCompileComplete
+\        LiveScriptCompile call s:LiveScriptCompile(<line1>, <line2>, <q-args>)
+" Run some LiveScript.
+command! -range=% -bar LiveScriptRun <line1>,<line2>:w !lsc -sp
+
+endif