How tell plugman that I want to update a file that may not be present?

问题

I wrote an android phonegap 3 plugin that starts an activity (the activity is part of plugin) and uses a native android UI. Now I want to follow the plugin specification to be able to install the plugin using the CLI.

My plugin has resources in the xml files /res/values/attrs.xml, /res/values/colors.xml and /res/values/ids.xml

My issue is that those files are not created by the platform add android command, so I can't use <config-file> to patch them.

I don't want to use <source-file> because I would like to avoid conflicts if I have to install other plugins also using those files.

Is there a proper way to update a file if it exists or create it if it doesn't?

来源：https://stackoverflow.com/questions/21002934/how-tell-plugman-that-i-want-to-update-a-file-that-may-not-be-present