Before building a script, you must understand the basics of Codex profiles. You can find all the information about Codex and the profiles here.
For files such as .strings, the usual purpose is to extract the whole content. In order to do that you can leave the script to its default configuration:
selectionPathList =  contextsPath =  groupingPaths =  contentNames =  groupingPathNames =  targetInjections =  targetInjectionsRange =