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If I want something to happen with a file after I save it in Xcode 4, is there any way I can achieve that? Say I want to replace all occurrences of “a” with “b” in the file after saving it.
Can this be done using the Automator? Or any other way?
This requires file/directory observation:
You could either use an Objective-C wrapper for FSEvents, such as SCEvent
Or you could use Uli Kusterer’s UKKQueue, which is an Objective-C wrapper around the kqueue file change notification mechanism.
Similarly to UKKQueue there exists Google’s GTMFileSystemKQueue which as well is an Objective-C wrapper around kqueues.
In short:
To get an xcodeproj’s files (which you then want to observe) parse its internal xml content tree.