/*
 * Copyright (c) 1995, 1996 Gunther Schadow.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program 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 General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "pg_config.h"

IDENT("@(#) RepFieldBase.cc (Gunther Schadow) 12/19/96");

#pragma implementation

#include "RepFieldBase.h"

#include "exception.h"
#include "logfile.h"
#include "misc.h"
#include "xios.h"
#include "ParseTrace.h"

/* The pointer coercion operators are necessary! */

void RepFieldBase::output(ostream& os) const
{
  const RepFieldBase *p;

  if(ishl7er(os) || isastmer(os))
    {
      LOGDEBUG("hl7/astm");

      char del = delims(os).getrep();

      p = this;
      while(p->_car != NULL)
	{
	  p->_car->output(os);
	  p = (RepFieldBase *)p->_cdr;
	  if(p->_car != NULL)
	    os << del;
	  else
	    break;
	}
    }
  else /* debug */
    {
      LOGDEBUG("debug");
      
      os << DSBGR0 "RepFieldBase" << DSBGR1;
      
      if(_car != NULL)
	{
	  os << DSFRST;
	  _car->output(os);
	  
	  for(p = (RepFieldBase *)_cdr; p->_car!=NULL;
	      p = (RepFieldBase *)p->_cdr)
	    {
	      os << DSSEPR;
	      p->_car->output(os);
	    }
	}
      else
	os << DSNOPS;
      
      os << DSEGRP;
    }

  LOGDEBUG("end");
}

result RepFieldBase::input(istream& is)
{
  RepFieldTracer tracer;

  if(isdebug(is))
    FATAL("can't read from debug stream");
  
  LOGDEBUG("hl7/astm");
  
  const char *dset = getdel(is, Delimiters::replevel);

  RepFieldBase *q = this;

  do
    {
      tracer++;

      if(q->_car == NULL)
	{
	  q->_car = q->ctora();
	  q->_cdr = q->ctord();
	}

      q->_car->input(is);

      q = (RepFieldBase *)q->_cdr;
    }
  while(match(is, dset));
  
  // Cut off the rest
  if(q->_car != NULL)
    {
      delete q->_car;
      q->_car = NULL;
    }
  if(q->_cdr != NULL)
    {
      delete q->_cdr;
      q->_cdr = NULL;
    }
  
  LOGDEBUG("end");

  return SUCCESS;
}