Added initial port of original OSX project.

- This is a copy of the [OSX](https://github.com/bkuhlmann/osx) project
  originally released on 2012-03-31. The OSX project has been
  deprecated. All future development and support will take place with
  this project instead.
- This project uses the *macOS* name in order to better match the
  updated branding and terminology used by Apple.

lib/options.sh

@@ -0,0 +1,60 @@
+#! /bin/bash
+
+# DESCRIPTION
+# Defines command line prompt options.
+
+# Process option selection.
+# Parameters:
+# $1 = The option to process.
+process_option() {
+  case $1 in
+    'B')
+      bin/create_boot_disk;;
+    'b')
+      "$MAC_OS_CONFIG_PATH/bin/apply_basic_settings";;
+    't')
+      bin/install_dev_tools;;
+    'h')
+      "$MAC_OS_CONFIG_PATH/bin/install_homebrew";;
+    'a')
+      "$MAC_OS_CONFIG_PATH/bin/install_applications";;
+    'x')
+      "$MAC_OS_CONFIG_PATH/bin/install_extensions";;
+    'd')
+      "$MAC_OS_CONFIG_PATH/bin/apply_default_settings";;
+    's')
+      "$MAC_OS_CONFIG_PATH/bin/setup_software";;
+    'i')
+      caffeinate_machine
+      "$MAC_OS_CONFIG_PATH/bin/apply_basic_settings"
+      bin/install_dev_tools
+      "$MAC_OS_CONFIG_PATH/bin/install_homebrew"
+      "$MAC_OS_CONFIG_PATH/bin/install_applications"
+      "$MAC_OS_CONFIG_PATH/bin/install_extensions"
+      "$MAC_OS_CONFIG_PATH/bin/apply_default_settings"
+      "$MAC_OS_CONFIG_PATH/bin/setup_software"
+      clean_work_path;;
+    'R')
+      "$MAC_OS_CONFIG_PATH/bin/restore_backup";;
+    'c')
+      verify_homebrews
+      verify_applications
+      verify_extensions;;
+    'C')
+      caffeinate_machine;;
+    'ua')
+      uninstall_application;;
+    'ux')
+      uninstall_extension;;
+    'ra')
+      reinstall_application;;
+    'rx')
+      reinstall_extension;;
+    'w')
+      clean_work_path;;
+    'q');;
+    *)
+      printf "ERROR: Invalid option.\n";;
+  esac
+}
+export -f process_option