//
// Part of the ht://Dig package   <http://www.htdig.org/>
// Copyright (c) 1999-2004 The ht://Dig Group
// For copyright details, see the file COPYING in your distribution
// or the GNU Library General Public License (LGPL) version 2 or later
// <http://www.gnu.org/copyleft/lgpl.html>
//
//
// WordRecord.cc
//
// WordRecord: data portion of the inverted index database
//
#ifdef HAVE_CONFIG_H
#include "htconfig.h"
#endif /* HAVE_CONFIG_H */

#include <stdlib.h>

#include "WordRecord.h"

//
// WordRecord implementation
//

//
// Convert the whole structure to an ascii string description
//
int
WordRecord::Get(String& buffer) const
{
  buffer.trunc();

  switch(type) {

  case WORD_RECORD_DATA:
    buffer << info.data;
    break;

  case WORD_RECORD_STATS:
    buffer << info.stats.noccurrence << "\t";
    buffer << info.stats.ndoc;
    break;

  case WORD_RECORD_NONE:
    break;

  default:
    fprintf(stderr, "WordRecord::Get: unknown type %d\n", type);
    return NOTOK;
    break;
  }

  return OK;
}

String
WordRecord::Get() const
{
  String tmp;
  Get(tmp);
  return tmp;
}

//
// Set a record from an ascii representation
//
int
WordRecord::Set(const String& buffer)
{
  StringList fields(buffer, "\t ");
  return SetList(fields);
}

int
WordRecord::SetList(StringList& fields)
{
  int i = 0;
  
  switch(type) 
    {
	
    case WORD_RECORD_DATA:
      {
	String* field = (String*)fields.Get_First();

	if(field == 0) {
	  fprintf(stderr, "WordRecord::Set: failed to retrieve field %d\n", i);
	  return NOTOK;
	}
	info.data = (unsigned int)atoi(field->get());
	fields.Remove(field);
	i++;
      }
      break;

    case WORD_RECORD_STATS:
      {
	String* field = (String*)fields.Get_First();

	if(field == 0) {
	  fprintf(stderr, "WordRecord::Set: failed to retrieve field %d\n", i);
	  return NOTOK;
	}
	info.stats.noccurrence = (unsigned int)atoi(field->get());
	fields.Remove(field);
	i++;

	field = (String*)fields.Get_First();

	if(field == 0) {
	  fprintf(stderr, "WordRecord::Set: failed to retrieve field %d\n", i);
	  return NOTOK;
	}
	info.stats.ndoc = (unsigned int)atoi(field->get());
	fields.Remove(field);
	i++;
      }
      break;

    case WORD_RECORD_NONE:
      break;

    default:
      fprintf(stderr, "WordRecord::Set: unknown type %d\n", type);
      break;
    }

  return OK;
}

int
WordRecord::Write(FILE* f) const
{
  String tmp;
  Get(tmp);
  fprintf(f, "%s", (char*)tmp);
  return 0;
}

void
WordRecord::Print() const
{
  Write(stderr);
}