Watchdog
Watchdog is a tiny header only library that allows to watch files or directories. It is supposed to be compatible with any application that supports c++11 and uses boost and/or cinder.
Watchdog is currently a work-in-progress.
By default watchdog is disabled in release mode and will only execute the provided callback once when wd::watch is called and do nothing for the other methods. Undef WATCHDOG_ONLY_IN_DEBUG if you want Watchdog to work in release mode.
For the moment non-Cinder application will have their callbacks called in a separated thread!
The API is very small an only expose those 4 functions to watch, unwatch or touch files or directories:
wd::watch( const fs::path &path, const std::function<void(const fs::path&)> &callback );
wd::unwatch( const fs::path &path );
wd::unwatchAll();
wd::touch();You can use a wildcard character to only watch for the desired files in a directory :
wd::watch( "shaders/lighting.*", []( const fs::path &path ){
// do something
} );If you need to be able to iterate through a watched directory you can change the callback signature to this :
wd::watch( "images/*.png", []( const vector<fs::path> &paths ){
for( auto p : paths ){
cout << p << " has changed" << endl;
}
} );In the context of cinder both absolute path and path relative to the asset folder are accepted.
There's is also a method to update the last write time of a file or directory which is usefull if you want to force the update of some files:
wd::watch( "shaders/include/*", []( const fs::path &path ){
// this will trigger any watched asset callback in "shaders"
wd::touch( "shaders" );
} );
wd::watch( "shaders/lighting.*", []( const fs::path &path ){
// triggered on changes any from "lighting.*" and "include/*"
} );
wd::watch( "shaders/wireframe.*", []( const fs::path &path ){
// triggered on changes any from "wireframe.*" and "include/*"
} );License
Copyright (c) 2014, Simon Geilfus All rights reserved.
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