MessagePrinter.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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * MessagePrinter.h
 * Print the contents of a message.
 * Copyright (C) 2011 Simon Newton
 */

#ifndef INCLUDE_OLA_MESSAGING_MESSAGEPRINTER_H_
#define INCLUDE_OLA_MESSAGING_MESSAGEPRINTER_H_

#include <ola/messaging/MessageVisitor.h>
#include <string>
#include <sstream>

namespace ola {
namespace messaging {


class MessagePrinter: public MessageVisitor {
 public:
 virtual ~MessagePrinter() {}

 std::string AsString(const class Message *message);

 virtual void Visit(const BoolMessageField*) {}
 virtual void Visit(const IPV4MessageField*) {}
 virtual void Visit(const UIDMessageField*) {}
 virtual void Visit(const StringMessageField*) {}
 virtual void Visit(const BasicMessageField<uint8_t>*) {}
 virtual void Visit(const BasicMessageField<uint16_t>*) {}
 virtual void Visit(const BasicMessageField<uint32_t>*) {}
 virtual void Visit(const BasicMessageField<int8_t>*) {}
 virtual void Visit(const BasicMessageField<int16_t>*) {}
 virtual void Visit(const BasicMessageField<int32_t>*) {}
 virtual void Visit(const GroupMessageField*) {}
 virtual void PostVisit(const GroupMessageField*) {}

 protected:
 std::stringstream& Stream() { return m_str; }
 virtual void PostStringHook() {}
 virtual string TransformLabel(const string &label) { return label; }

 private:
 std::stringstream m_str;
};


class GenericMessagePrinter: public MessagePrinter {
 public:
 GenericMessagePrinter(unsigned int indent_size = DEFAULT_INDENT,
 unsigned int initial_indent = 0)
 : m_indent(initial_indent),
 m_indent_size(indent_size) {
 }
 ~GenericMessagePrinter() {}

 virtual void Visit(const BoolMessageField*);
 virtual void Visit(const IPV4MessageField*);
 virtual void Visit(const UIDMessageField*);
 virtual void Visit(const StringMessageField*);
 virtual void Visit(const BasicMessageField<uint8_t>*);
 virtual void Visit(const BasicMessageField<uint16_t>*);
 virtual void Visit(const BasicMessageField<uint32_t>*);
 virtual void Visit(const BasicMessageField<int8_t>*);
 virtual void Visit(const BasicMessageField<int16_t>*);
 virtual void Visit(const BasicMessageField<int32_t>*);
 virtual void Visit(const GroupMessageField*);
 virtual void PostVisit(const GroupMessageField*);

 static const unsigned int DEFAULT_INDENT = 2;

 private:
 unsigned int m_indent, m_indent_size;

 void AppendUInt(const string &name,
 unsigned int value,
 const string &label,
 int8_t multipler);
 void AppendInt(const string &name,
 int value,
 const string &label,
 int8_t multipler);
 void AppendMultipler(int8_t multipler);
};
} // namespace messaging
} // namespace ola
#endif // INCLUDE_OLA_MESSAGING_MESSAGEPRINTER_H_