link-dotfiles.sh

#! /bin/bash
#
# Links dotfiles into the home directory
RED='\033[0;31m'
CYAN='\033[0;36m'
NC='\033[0m'

DIRECTORIES=(vim zsh x11 git pry)

usage() {
  echo "Usage: [-ah]"
  echo
  echo "       -a: attempts to link all scripts without prompts"
  echo "       -h: shows this message" 1>&2; exit 1;
}

while getopts ":ah" opt; do
  case $opt in
    a)
      a=1
      ;;
    h)
      usage
      ;;
  esac
done

touch $HOME/.env

for DIRECTORY in "${DIRECTORIES[@]}"; do
  for FILEPATH in $DIRECTORY/*; do
    FILENAME=`basename $FILEPATH`
    DOTFILE=$HOME/.$FILENAME

    if [ -z "${a}" ]; then
      printf "${CYAN}Link .$FILENAME?${NC} "
      read -n 1 -r RESPONSE
      echo

      until [[ $RESPONSE =~ ^[[yY]|[nN]$ ]]; do
        printf "${RED}Please enter y/n${NC}"
        echo; echo
        printf "Link .$FILENAME? (y/n) "
        read -n 1 -r RESPONSE
        echo
      done
    fi

    if [[ $RESPONSE =~ ^([yY][eE][sS]|[yY])$ ]]; then
      # If the file exists and is a regular file
      if [ -e $DOTFILE ] && [ ! -L $DOTFILE ]
      then
        echo "Moving ~/.$FILENAME to ~/.$FILENAME.old"
        mv $DOTFILE $DOTFILE.old
      fi

      # If the file does not exist now, or never did
      if [ ! -e $DOTFILE ]
      then
        echo "Linking .$FILENAME..."
        ln -s `pwd`/$FILEPATH $DOTFILE
      fi
    fi
  done
done

exit 0