transmission/third-party/filewatcher/file-watcher.cpp

/**
 * A C wrapper around James Wynn's FileWatcher library.
 *
 * Released under a free dont-bother-me license. I don't claim this
 * software won't destroy everything that you hold dear, but I really
 * doubt it will. And please try not to take credit for others' work.
 */

#include <iostream>
#include "file-watcher.h"
#include "FileWatcher.h"

using namespace FW;

struct CFW_Impl: public FileWatchListener
{
    private:
        FileWatcher myWatcher;
        WatchID myID;
        CFW_ActionCallback * myCallback;
        void * myCallbackData;

    public:
        CFW_Impl( const char * dir, CFW_ActionCallback * callback, void * callbackData ):
            myID( myWatcher.addWatch( dir, this ) ),
            myCallback( callback ),
            myCallbackData( callbackData )
        {
        }
        virtual ~CFW_Impl( )
        {
            myWatcher.removeWatch( myID );
        }
        virtual void handleFileAction( WatchID watchid, const String& dir, const String& filename, FileWatcher::Action action )
        {
std::cerr << __FILE__ << ':' << __LINE__ << " dir is " << dir << " filename is " << filename << std::endl;
            (*myCallback)( this, dir.c_str(), filename.c_str(), (CFW_Action)action, myCallbackData );
        }
        void update( )
        {
            myWatcher.update( );
        }
};

extern "C" CFW_Watch*
cfw_addWatch( const char * directory, CFW_ActionCallback * callback, void * callbackData )
{
    return new CFW_Impl( directory, callback, callbackData );
}

extern "C" void
cfw_removeWatch( CFW_Watch * watch )
{
    delete watch;
}

extern "C" void
cfw_update( CFW_Watch * watch )
{
    watch->update( );
}