/******************************************************************************
 *
 * Project:  TIGER/Line Translator
 * Purpose:  Implements TigerAltName, providing access to RT4 files.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 1999, Frank Warmerdam
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 ****************************************************************************/

#include "ogr_tiger.h"
#include "cpl_conv.h"

CPL_CVSID("$Id$")

static const char FILE_CODE[] = "4";

static const TigerFieldInfo rt4_fields[] = {
  // fieldname    fmt  type  OFTType         beg  end  len  bDefine bSet
  { "MODULE",     ' ',  ' ', OFTString,        0,   0,   8,       1,   0 },
  { "TLID",       'R',  'N', OFTInteger,       6,  15,  10,       1,   1 },
  { "RTSQ",       'R',  'N', OFTInteger,      16,  18,   3,       1,   1 },
  { "FEAT",       ' ',  ' ', OFTIntegerList,   0,   0,   8,       1,   0 }
  // Note: we don't mention the FEAT1, FEAT2, FEAT3, FEAT4, FEAT5 fields
  // here because they're handled separately in the code below; they correspond
  // to the FEAT array field here.
};

static const TigerRecordInfo rt4_info =
  {
    rt4_fields,
    sizeof(rt4_fields) / sizeof(TigerFieldInfo),
    58
  };

/************************************************************************/
/*                            TigerAltName()                            */
/************************************************************************/

TigerAltName::TigerAltName( OGRTigerDataSource * poDSIn,
                            CPL_UNUSED const char * pszPrototypeModule ) :
    TigerFileBase(&rt4_info, FILE_CODE)
{
    OGRFieldDefn        oField("",OFTInteger);

    poDS = poDSIn;
    poFeatureDefn = new OGRFeatureDefn( "AltName" );
    poFeatureDefn->Reference();
    poFeatureDefn->SetGeomType( wkbNone );

    /* -------------------------------------------------------------------- */
    /*      Fields from type 4 record.                                      */
    /* -------------------------------------------------------------------- */

    AddFieldDefns( psRTInfo, poFeatureDefn );
}

/************************************************************************/
/*                             GetFeature()                             */
/************************************************************************/

OGRFeature *TigerAltName::GetFeature( int nRecordId )

{
    char        achRecord[OGR_TIGER_RECBUF_LEN];

    if( nRecordId < 0 || nRecordId >= nFeatures )
    {
        CPLError( CE_Failure, CPLE_FileIO,
                  "Request for out-of-range feature %d of %s4",
                  nRecordId, pszModule );
        return nullptr;
    }

/* -------------------------------------------------------------------- */
/*      Read the raw record data from the file.                         */
/* -------------------------------------------------------------------- */
    if( fpPrimary == nullptr )
        return nullptr;

    if( VSIFSeekL( fpPrimary, nRecordId * nRecordLength, SEEK_SET ) != 0 )
    {
        CPLError( CE_Failure, CPLE_FileIO,
                  "Failed to seek to %d of %s4",
                  nRecordId * nRecordLength, pszModule );
        return nullptr;
    }

    // Overflow cannot happen since psRTInfo->nRecordLength is unsigned
    // char and sizeof(achRecord) == OGR_TIGER_RECBUF_LEN > 255
    if( VSIFReadL( achRecord, psRTInfo->nRecordLength, 1, fpPrimary ) != 1 )
    {
        CPLError( CE_Failure, CPLE_FileIO,
                  "Failed to read record %d of %s4",
                  nRecordId, pszModule );
        return nullptr;
    }

    /* -------------------------------------------------------------------- */
    /*      Set fields.                                                     */
    /* -------------------------------------------------------------------- */

    OGRFeature  *poFeature = new OGRFeature( poFeatureDefn );
    int         anFeatList[5];
    int         nFeatCount=0;

    SetFields( psRTInfo, poFeature, achRecord );

    for( int iFeat = 0; iFeat < 5; iFeat++ )
    {
        const char *pszFieldText =
            GetField( achRecord, 19 + iFeat*8, 26 + iFeat*8 );

        if( *pszFieldText != '\0' )
            anFeatList[nFeatCount++] = atoi(pszFieldText);
    }

    poFeature->SetField( "FEAT", nFeatCount, anFeatList );

    return poFeature;
}
