Break main executable logic into functions

src/lib/main/dispatcher.sh

@@ -0,0 +1,34 @@
+dotify-main-dispatcher() {
+  # Show help and exit if help arguments or command are given.
+  if [ -n "$ARG_HELP" ] || [ "$COMMAND" == "help" ]; then
+    dotify-command-help
+    exit
+  fi
+
+  # Show version info and exit if version arguments or command are given.
+  if [ -n "$ARG_VERSION" ] || [ "$COMMAND" == "version" ]; then
+    dotify-command-help | head -1
+    exit
+  fi
+
+  # Deal with the commands.
+  case "$COMMAND" in
+    "info" )
+      dotify-command-info
+      ;;
+    "compile" )
+      dotify-command-compile
+      ;;
+    "" | "install" )
+      dotify-command-install
+      ;;
+    "uninstall" )
+      dotify-command-uninstall
+      ;;
+    "clean" )
+      dotify-command-clean
+      ;;
+  esac
+
+  return $?
+}