dataparameter.cxx

一个著名的SIP协议栈

#if defined(HAVE_CONFIG_H)
#include "resip/stack/config.hxx"
#endif

#include <cassert>
#include "resip/stack/DataParameter.hxx"
#include "resip/stack/Symbols.hxx"
#include "rutil/ParseBuffer.hxx"
#include "resip/stack/ParseException.hxx"
#include "rutil/Logger.hxx"
#include "rutil/WinLeakCheck.hxx"

using namespace resip;
using namespace std;

#define RESIPROCATE_SUBSYSTEM Subsystem::SIP

DataParameter::DataParameter(ParameterTypes::Type type,
                             ParseBuffer& pb,
			     const char* terminators)
   : Parameter(type), 
     mValue(),
     mQuoted(false)
{
   pb.skipWhitespace();
   pb.skipChar(Symbols::EQUALS[0]);
   pb.skipWhitespace();
   pb.assertNotEof(); // handle cases such as ;tag=

   if (*pb.position() == Symbols::DOUBLE_QUOTE[0])
   {
      setQuoted(true);
      pb.skipChar();
      const char* pos = pb.position();
      pb.skipToEndQuote();
      pb.data(mValue, pos);
      pb.skipChar();
   }
   else
   {
      const char* pos = pb.position();
      pb.skipToOneOf(terminators);
      pb.data(mValue, pos);
   }
}

DataParameter::DataParameter(ParameterTypes::Type type)
   : Parameter(type),
     mValue(),
     mQuoted(false)
{
}

Parameter* 
DataParameter::clone() const
{
   return new DataParameter(*this);
}

ostream& 
DataParameter::encode(ostream& stream) const
{
   if (mQuoted)
   {
      return stream << getName() << Symbols::EQUALS 
                    << Symbols::DOUBLE_QUOTE << mValue << Symbols::DOUBLE_QUOTE;
   }
   else
   {
      // this will assert if you've accessed a parameter that doesn't exist and
      // then the stack has created an empty parameter with no value. Try
      // calling exists(p_foo) before calling param(p_foo)
      if (mValue.empty())
      {
         ErrLog(<< "Accessing defaulted DataParameter: '" << getName() << "'");
      }
      assert(!mValue.empty()); // !jf!  probably should throw here
      return stream << getName() << Symbols::EQUALS << mValue;
   }
}

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
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 */