/****************************************************************************** * $Id: tigerzerocellid.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  TIGER/Line Translator * Purpose:  Implements TigerZeroCellID, providing access to .RTT files. * Author:   Mark Phillips, mbp@geomtech.com * ****************************************************************************** * Copyright (c) 2002, Frank Warmerdam, Mark Phillips * * 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: tigerzerocellid.cpp 10646 2007-01-18 02:38:10Z warmerdam $");#define FILE_CODE       "T"static TigerFieldInfo rtT_fields[] = {  // fieldname    fmt  type OFTType      beg  end  len  bDefine bSet bWrite  { "MODULE",     ' ', ' ', OFTString,     0,   0,   8,       1,   0,     0 },  { "FILE",       'L', 'N', OFTInteger,    6,  10,   5,       1,   1,     1 },  { "TZID",       'R', 'N', OFTInteger,   11,  20,  10,       1,   1,     1 },  { "SOURCE",     'L', 'A', OFTString,    21,  30,  10,       1,   1,     1 },  { "FTRP",       'L', 'A', OFTString,    31,  47,  17,       1,   1,     1 }};static TigerRecordInfo rtT_info =  {    rtT_fields,    sizeof(rtT_fields) / sizeof(TigerFieldInfo),    47  };/************************************************************************//*                           TigerZeroCellID()                           *//************************************************************************/TigerZeroCellID::TigerZeroCellID( OGRTigerDataSource * poDSIn,                              const char * pszPrototypeModule ){    OGRFieldDefn        oField("",OFTInteger);    poDS = poDSIn;    poFeatureDefn = new OGRFeatureDefn( "ZeroCellID" );    poFeatureDefn->Reference();    poFeatureDefn->SetGeomType( wkbNone );    psRTTInfo = &rtT_info;/* -------------------------------------------------------------------- *//*      Fields from type T record.                                      *//* -------------------------------------------------------------------- */    AddFieldDefns( psRTTInfo, poFeatureDefn );}/************************************************************************//*                           ~TigerZeroCellID()                           *//************************************************************************/TigerZeroCellID::~TigerZeroCellID(){}/************************************************************************//*                             SetModule()                              *//************************************************************************/int TigerZeroCellID::SetModule( const char * pszModule ){    if( !OpenFile( pszModule, FILE_CODE ) )        return FALSE;    EstablishFeatureCount();        return TRUE;}/************************************************************************//*                             GetFeature()                             *//************************************************************************/OGRFeature *TigerZeroCellID::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 %sZ",                  nRecordId, pszModule );        return NULL;    }/* -------------------------------------------------------------------- *//*      Read the raw record data from the file.                         *//* -------------------------------------------------------------------- */    if( fpPrimary == NULL )        return NULL;    if( VSIFSeek( fpPrimary, nRecordId * nRecordLength, SEEK_SET ) != 0 )    {        CPLError( CE_Failure, CPLE_FileIO,                  "Failed to seek to %d of %sZ",                  nRecordId * nRecordLength, pszModule );        return NULL;    }    if( VSIFRead( achRecord, psRTTInfo->nRecordLength, 1, fpPrimary ) != 1 )    {        CPLError( CE_Failure, CPLE_FileIO,                  "Failed to read record %d of %sZ",                  nRecordId, pszModule );        return NULL;    }/* -------------------------------------------------------------------- *//*      Set fields.                                                     *//* -------------------------------------------------------------------- */    OGRFeature  *poFeature = new OGRFeature( poFeatureDefn );    SetFields( psRTTInfo, poFeature, achRecord );    return poFeature;}/************************************************************************//*                           CreateFeature()                            *//************************************************************************/OGRErr TigerZeroCellID::CreateFeature( OGRFeature *poFeature ){    char        szRecord[OGR_TIGER_RECBUF_LEN];    if( !SetWriteModule( FILE_CODE, psRTTInfo->nRecordLength+2, poFeature ) )        return OGRERR_FAILURE;    memset( szRecord, ' ', psRTTInfo->nRecordLength );    WriteFields( psRTTInfo, poFeature, szRecord );    WriteRecord( szRecord, psRTTInfo->nRecordLength, FILE_CODE );    return OGRERR_NONE;}