immediately rsync when the file in specific directory was written by vim (final edition)

sync-charag

#!/bin/sh
rsync -av -e "ssh -p XXXX" $1 XXXX@charag.jp:$2

sync-charag.vim

autocmd! BufWritePost * call SyncCharag()

function! SyncCharag()

  let local_directory = "/Users/eveningsun/rails/charag/"
  let remote_directory = "/home/www/rails/charag/"

  let local_fullpath = getcwd()."/".bufname("%")

 if local_fullpath  =~ "^".local_directory
    let local_directory_len = strlen(local_directory)
    let local_tofile_len = strlen(local_fullpath) - local_directory_len

    let local_tofile = strpart(local_fullpath, local_directory_len, local_tofile_len)
    let remote_fullpath = remote_directory.local_tofile
    exec 'call system("$HOME/bin/sync-charag ".local_fullpath." ".remote_fullpath)'
  endif

endfunction