Working on install script(s)

vim/setup

@@ -2,14 +2,109 @@
 
 set -e
 
-if test -z "$(type vim)"; then
-  echo "Does not look like you have vim installed."
+vim_dir="${HOME}/.vim"
+uninstall=1
+remove=1
+copy=1
+link=0
+
+_usage() {
+  printf "\n" >&2
+  printf "Usage: setup [OPTIONS]\n" >&2
+  printf "\n" >&2
+  printf "Installs or Uninstalls vim configuration files.\n" >&2
+  printf "\n" >&2
+  printf "If called without the uninstall option then it will install the configuration files.\n" >&2
+  printf "The copy and link options are ignored if called with the uninstall or remove option.\n" >&2
+  printf "Options:\n" >&2
+  printf "\t-c | --copy: Copy the configuration files, instead of creating symlinks.\n" >&2
+  printf "\t-h | --help: Print usage information.\n" >&2
+  printf "\t-l | --link: Create symlinks to the configuration files (Default).\n" >&2
+  printf "\t-r | --remove: Removes the entire ~/.vim directory.\n" >&2
+  printf "\t-u | --uninstall: Uninstalls configuration files.\n" >&2
+  printf "" >&2
+}
+
+_parse_options() {
+  arg=
+  while ! test -z "$1"; do
+    arg="$1"
+    case $arg in
+      -c | --copy)
+        copy=0
+        link=1
+        shift;;
+      -h | --help)
+        _usage
+        exit;;
+      -l | --link)
+        copy=1
+        link=0
+        shift;;
+     -r | --remove)
+        remove=0
+        shift;;
+      -u | --uninstall)
+        uninstall=0
+        shift;;
+      *)
+        echo "Unknown option $arg" >&2
+        shift;;
+    esac
+  done
+}
+
+_make_dirs() {
+  if ! test -d "${vim_dir}"; then
+    mkdir "${vim_dir}"
+  fi
+}
+
+_uninstall_vim() {
+  echo "Uninstalling vim..." >&2
+  test -e "${vim_dir}/vimrc" && rm "${vim_dir}/vimrc"
+}
+
+_remove_vim() {
+  echo "Removing ~/.vim..." >&2
+  test -d "${vim_dir}" && rm -r -i "${vim_dir}"
+}
+
+_link_vim() {
+  echo "Symlinking vim configuration files..." >&2
+  ln -sfv "${PWD}/vimrc" "${vim_dir}"
+}
+
+_copy_vim() {
+  echo "Copying vim configuration files..." >&2
+  cp "${PWD}/vimrc" "${vim_dir}"
+}
+
+_install_vim() {
+  _make_dirs
+  # check if in copy mode & copy configuration
+  test "$copy" -eq 0 && _copy_vim && return 0
+  # else check if in link mode & link configuration
+  test "$link" -eq 0 && _link_vim && return 0
+  # we don't know what to do w/o link or copy so error
+  echo "Must supply the link or copy option, use --help for usage" >&2
   exit 1
-fi
+}
 
-mkdir "${HOME}/.vim" >/dev/null 2>&1
-ln -sfv "${PWD}/.vim/vimrc" "${HOME}/.vim/vimrc"
+#------------------------------- main -------------------------------
 
+main() {
+  _parse_options "$@"
 
+  # check if remove is called first
+  test $remove -eq 0 && _remove_vim && exit
 
+  # then check if uninstall was called
+  test $uninstall -eq 0 && _uninstall_vim && exit
 
+  # else install the configuration files
+  _install_vim
+  echo "Vim will need to be started, vim plugins should download on start or call :PlugInstall."
+}
+
+main "$@"