Function getState

distrho/src/DistrhoPluginVST3.cpp:1169–1275

    }

    v3_result getState(v3_bstream** const stream)
    {
        const uint32_t paramCount = fPlugin.getParameterCount();
       #if DISTRHO_PLUGIN_WANT_STATE
        const uint32_t stateCount = fPlugin.getStateCount();
       #else
        constexpr const uint32_t stateCount = 0;
       #endif

        if (stateCount == 0 && paramCount == 0)
        {
            char buffer = '\0';
            int32_t ignored;
            return v3_cpp_obj(stream)->write(stream, &buffer, 1, &ignored);
        }

       #if DISTRHO_PLUGIN_WANT_FULL_STATE
        // Update current state
        for (StringMap::const_iterator cit=fStateMap.begin(), cite=fStateMap.end(); cit != cite; ++cit)
        {
            const String& key(cit->first);
            fStateMap[key] = fPlugin.getStateValue(key);
        }
       #endif

        String state;

       #if DISTRHO_PLUGIN_WANT_PROGRAMS
        {
            String tmpStr("__dpf_program__\xff");
            tmpStr += String(fCurrentProgram);
            tmpStr += "\xff";

            state += tmpStr;
        }
       #endif

       #if DISTRHO_PLUGIN_WANT_STATE
        if (stateCount != 0)
        {
            state += "__dpf_state_begin__\xff";

            for (StringMap::const_iterator cit=fStateMap.begin(), cite=fStateMap.end(); cit != cite; ++cit)
            {
                const String& key(cit->first);
                const String& value(cit->second);

                // join key and value
                String tmpStr;
                tmpStr  = key;
                tmpStr += "\xff";
                tmpStr += value;
                tmpStr += "\xff";

                state += tmpStr;
            }

            state += "__dpf_state_end__\xff";