install.py

#!/usr/bin/env python
from os import mkdir
from os import rename
from os import symlink
from os.path import expanduser
from os.path import islink
from os.path import exists

VERSION = '0.1.0'
DESC = 'Creates symlinks from the home directory to the dotfiles repo. TODO: ZSH stuff'

FORMAT = '%(asctime)s %(levelname)s %(message)s'

HOME = expanduser('~')
DIR = 'dotfiles'
BACKUPDIR = 'dotfiles_old'
files = ['vimrc', 'vim', 'zshrc', 'oh-my-zsh', 'irssi', 'tmux.conf', 'lynx.cfg', 'ackrc']

def main():
    makeBackupDir()

    filesToBackup = {}
    filesToLink = {}

    for f in files:
      filePath = HOME + '/.' + f
      if not exists(filePath):
        filesToLink[f] = filePath
      else:
        if not islink(filePath):
          filesToLink[f] = filePath
          backupCurrent(f, filePath)

    if (len(filesToLink) > 0):
      fileList = ', .'.join(filesToLink)
      print 'These files are not yet symlinked to your dotfiles: .' + fileList
      print 'Moving them to ' + HOME + '/' + BACKUPDIR
      print 'Creating symlinks to version in your dotfiles repo'
      for key in filesToLink:
        createSymlink(key, filesToLink[key])

      print 'Done!'

    else:
      print 'All dotfiles already symlinked. Nothing to do.'

def makeBackupDir():
    backup = HOME + '/' + BACKUPDIR
    if not exists(backup):
      print 'Creating backup directory ' + backup
      mkdir(backup)

def backupCurrent(fileName, filePath):
    dest = HOME + '/' + BACKUPDIR + '/.' + fileName
    rename(filePath, dest)

def createSymlink(fileName, filePath):
  src = HOME + '/' + DIR + '/' + fileName
  dest = HOME + '/.' + fileName
  symlink(src, dest)

if __name__ == '__main__':
  main()