PidStoreLoader.h

/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * PidStoreLoader.h
 * This class does the heavy lifting for loading the PidStore from a protobuf.
 * It's separate so that PidStore.h doesn't have to include the Pids.pb.h
 * header.
 * Copyright (C) 2011 Simon Newton
 */

#ifndef COMMON_RDM_PIDSTORELOADER_H_
#define COMMON_RDM_PIDSTORELOADER_H_

#include <ola/messaging/Descriptor.h>
#include <ola/rdm/PidStore.h>
#include <map>
#include <istream>
#include <string>
#include <vector>
#include "common/rdm/DescriptorConsistencyChecker.h"
#include "common/rdm/Pids.pb.h"

namespace ola {
namespace rdm {

class PidStoreLoader {
 public:
 PidStoreLoader() {}

 const RootPidStore *LoadFromFile(const std::string &file,
 bool validate = true);

 const RootPidStore *LoadFromDirectory(const std::string &directory,
 bool validate = true);

 const RootPidStore *LoadFromStream(std::istream *data,
 bool validate = true);

 private:
 typedef std::map<uint16_t, const PidDescriptor*> PidMap;
 typedef std::map<uint16_t, PidMap*> ManufacturerMap;

 DescriptorConsistencyChecker m_checker;

 bool ReadFile(const std::string &file_path,
 ola::rdm::pid::PidStore *proto);

 const RootPidStore *BuildStore(const ola::rdm::pid::PidStore &store_pb,
 const ola::rdm::pid::PidStore &override_pb,
 bool validate);

 bool LoadFromProto(ManufacturerMap *pid_data,
 const ola::rdm::pid::PidStore &proto,
 bool validate);

 template <typename pb_object>
 bool GetPidList(PidMap *pid_map,
 const pb_object &store,
 bool validate,
 bool limit_pid_values);

 PidDescriptor *PidToDescriptor(const ola::rdm::pid::Pid &pid,
 bool validate);
 const ola::messaging::Descriptor* FrameFormatToDescriptor(
 const ola::rdm::pid::FrameFormat &format,
 bool validate);
 const ola::messaging::FieldDescriptor *FieldToFieldDescriptor(
 const ola::rdm::pid::Field &field);

 template <typename descriptor_class>
 const ola::messaging::FieldDescriptor *IntegerFieldToFieldDescriptor(
 const ola::rdm::pid::Field &field);

 const ola::messaging::FieldDescriptor *StringFieldToFieldDescriptor(
 const ola::rdm::pid::Field &field);
 const ola::messaging::FieldDescriptor *GroupFieldToFieldDescriptor(
 const ola::rdm::pid::Field &field);
 PidDescriptor::sub_device_validator ConvertSubDeviceValidator(
 const ola::rdm::pid::SubDeviceRange &sub_device_range);

 void FreeManufacturerMap(ManufacturerMap *data);

 static const char OVERRIDE_FILE_NAME[];
 static const uint16_t ESTA_MANUFACTURER_ID;
 static const uint16_t MANUFACTURER_PID_MIN;
 static const uint16_t MANUFACTURER_PID_MAX;

 DISALLOW_COPY_AND_ASSIGN(PidStoreLoader);
};
} // namespace rdm
} // namespace ola
#endif // COMMON_RDM_PIDSTORELOADER_H_