Updated setup script for the git directory

git/setup

@@ -1,18 +1,95 @@
 #!/bin/sh
 
 config="${HOME}/.config"
+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 git configuration files.\n" >&2
+  printf "\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 ~/.config/git directory.\n" >&2
+  printf "\t-u | --uninstall : Uninstalls 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 "\n" >&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 $arg" >&2
+        shift;;
+    esac
+  done
+}
 _make_dirs() {
-  test ! -d "${config}" && mkdir "${config}"
+  if ! test -d "${config}"; then
+    mkdir "${config}"
+  fi
 }
 
 _remove_git() {
-  test -d "${config}/git" && rm "${config}/git"
+  echo "Removing git directory..."
+  test -d "${config}/git" && rm -r "${config}/git"
 }
 
 _link_git() {
+  echo "Linking git configuration..."
   ln -sfv "${PWD}/git" "${config}"
 }
 
+_copy_git() {
+  echo "Copying git configuration..."
+  cp -r "${PWD}/git" "${config}"
+}
+
+_install() {
+  _make_dirs
+
+  test "$copy" -eq 0 && _copy_git && return "$?"
+  test "$link" -eq 0 && _link_git && return "$?"
+  echo "Neither link or copy was passed, see --help for usage"
+  exit 1
+}
+
 #------------------------------- main -------------------------------
-_make_dirs && _link_git
+main() {
+  _parse_options "$@"
+
+  test "$remove" -eq 0 && _remove_git && exit "$?"
+  test "$uninstall" -eq 0 && _remove_git && exit "$?"
+
+  _install && exit "$?"
+}
+
+main "$@"