foobar2000/SDK/commandline.h

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#ifndef _FOOBAR2000_SDK_COMMANDLINE_H_
#define _FOOBAR2000_SDK_COMMANDLINE_H_

#include "service.h"

class NOVTABLE commandline_handler : public service_base
{
public:
        enum result
        {
                RESULT_NOT_OURS,//not our command
                RESULT_PROCESSED,//command processed
                RESULT_PROCESSED_EXPECT_FILES,//command processed, we want to takeover file urls after this command
        };
        virtual result on_token(const char * token)=0;
        virtual void on_file(const char * url) {};//optional
        virtual void on_files_done() {};//optional
        virtual bool want_directories() {return false;}

        FB2K_MAKE_SERVICE_INTERFACE_ENTRYPOINT(commandline_handler);
};

class commandline_handler_metadb_handle : public commandline_handler//helper
{
protected:
        virtual void on_file(const char * url);
        virtual bool want_directories() {return true;}
public:
        virtual result on_token(const char * token)=0;  
        virtual void on_files_done() {};
        
        virtual void on_file(const metadb_handle_ptr & ptr)=0;
};

/*

how commandline_handler is used:

        scenario #1:
                creation => on_token() => deletion
        scenario #2:
                creation => on_token() returning RESULT_PROCESSED_EXPECT_FILES => on_file(), on_file().... => on_files_done() => deletion
*/

template<typename T>
class commandline_handler_factory_t : public service_factory_t<T> {};



#endif //_FOOBAR2000_SDK_COMMANDLINE_H_

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