tigerentitynames.cpp

GIS系统支持库Geospatial Data Abstraction Library代码.GDAL is a translator library for raster geospatial dat

/******************************************************************************
 * $Id: tigerentitynames.cpp,v 1.10 2003/01/11 15:29:55 warmerda Exp $
 *
 * Project:  TIGER/Line Translator
 * Purpose:  Implements TigerEntityNames, providing access to .RTC files.
 * Author:   Frank Warmerdam, [e-mail]
 *
 ******************************************************************************
 * 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.
 ******************************************************************************
 *
 * $Log: tigerentitynames.cpp,v $
 * Revision 1.10  2003/01/11 15:29:55  warmerda
 * expanded tabs
 *
 * Revision 1.9  2003/01/04 23:21:56  mbp
 * Minor bug fixes and field definition changes.  Cleaned
 * up and commented code written for TIGER 2002 support.
 *
 * Revision 1.8  2002/12/26 00:20:19  mbp
 * re-organized code to hold TIGER-version details in TigerRecordInfo structs;
 * first round implementation of TIGER_2002 support
 *
 * Revision 1.7  2001/07/19 16:05:49  warmerda
 * clear out tabs
 *
 * Revision 1.6  2001/07/18 04:55:16  warmerda
 * added CPL_CSVID
 *
 * Revision 1.5  2001/07/04 23:25:32  warmerda
 * first round implementation of writer
 *
 * Revision 1.4  2001/07/04 05:40:35  warmerda
 * upgraded to support FILE, and Tiger2000 schema
 *
 * Revision 1.3  2001/01/19 21:15:20  warmerda
 * expanded tabs
 *
 * Revision 1.2  2000/01/13 05:18:11  warmerda
 * added support for multiple versions
 *
 * Revision 1.1  1999/12/22 15:37:59  warmerda
 * New
 *
 */

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

CPL_CVSID("$Id: tigerentitynames.cpp,v 1.10 2003/01/11 15:29:55 warmerda Exp $");

#define FILE_CODE "C"

static TigerFieldInfo rtC_2002_fields[] = {
  // fieldname    fmt  type OFTType      beg  end  len  bDefine bSet bWrite
  { "MODULE",     ' ', ' ', OFTString,     0,   0,   8,       1,   0,     0 },
  { "STATE",      'L', 'N', OFTInteger,    6,   7,   2,       1,   1,     1 },
  { "COUNTY",     'L', 'N', OFTInteger,    8,  10,   3,       1,   1,     1 },
  { "DATAYR",     'L', 'A', OFTString,    11,  14,   4,       1,   1,     1 },
  { "FIPS",       'L', 'N', OFTInteger,   15,  19,   5,       1,   1,     1 },
  { "FIPSCC",     'L', 'A', OFTString,    20,  21,   2,       1,   1,     1 },
  { "PLACEDC",    'L', 'A', OFTString,    22,  22,   1,       1,   1,     1 },
  { "LSADC",      'L', 'A', OFTString,    23,  24,   2,       1,   1,     1 },
  { "ENTITY",     'L', 'A', OFTString,    25,  25,   1,       1,   1,     1 },
  { "MA",         'L', 'N', OFTInteger,   26,  29,   4,       1,   1,     1 },
  { "SD",         'L', 'N', OFTInteger,   30,  34,   5,       1,   1,     1 },
  { "AIANHH",     'L', 'N', OFTInteger,   35,  38,   4,       1,   1,     1 },
  { "VTDTRACT",   'R', 'A', OFTString,    39,  44,   6,       1,   1,     1 },
  { "UAUGA",      'L', 'N', OFTInteger,   45,  49,   5,       1,   1,     1 },
  { "AITSCE",     'L', 'N', OFTInteger,   50,  52,   3,       1,   1,     1 },
  { "RS_C1",      'L', 'N', OFTInteger,   53,  54,   2,       1,   1,     1 },
  { "RS_C2",      'L', 'N', OFTInteger,   55,  62,   8,       1,   1,     1 },
  { "NAME",       'L', 'A', OFTString,    63, 122,  60,       1,   1,     1 },
};
static TigerRecordInfo rtC_2002_info =
  {
    rtC_2002_fields,
    sizeof(rtC_2002_fields) / sizeof(TigerFieldInfo),
    122
  };

static TigerFieldInfo rtC_2000_Redistricting_fields[] = {
  // fieldname    fmt  type OFTType      beg  end  len  bDefine bSet bWrite
  { "MODULE",     ' ', ' ', OFTString,     0,   0,   8,       1,   0,     0 },
  { "STATE",      'L', 'N', OFTInteger,    6,   7,   2,       1,   1,     1 },
  { "COUNTY",     'L', 'N', OFTInteger,    8,  10,   3,       1,   1,     1 },
  { "FIPSYR",     'L', 'N', OFTString,    11,  14,   4,       1,   1,     1 },
  { "FIPS",       'L', 'N', OFTInteger,   15,  19,   5,       1,   1,     1 },
  { "FIPSCC",     'L', 'A', OFTString,    20,  21,   2,       1,   1,     1 },
  { "PDC",        'L', 'A', OFTString,    22,  22,   1,       1,   1,     1 },
  { "LASAD",      'L', 'A', OFTString,    23,  24,   2,       1,   1,     1 },
  { "ENTITY",     'L', 'A', OFTString,    25,  25,   1,       1,   1,     1 },
  { "MA",         'L', 'N', OFTInteger,   26,  29,   4,       1,   1,     1 },
  { "SD",         'L', 'N', OFTInteger,   30,  34,   5,       1,   1,     1 },
  { "AIR",        'L', 'N', OFTInteger,   35,  38,   4,       1,   1,     1 },
  { "VTD",        'R', 'A', OFTString,    39,  44,   6,       1,   1,     1 },
  { "UA",         'L', 'N', OFTInteger,   45,  49,   5,       1,   1,     1 },
  { "AITSCE",     'L', 'N', OFTInteger,   50,  52,   3,       1,   1,     1 },
  { "NAME",       'L', 'A', OFTString,    53, 112,  66,       1,   1,     1 }
};
static TigerRecordInfo rtC_2000_Redistricting_info =
  {
    rtC_2000_Redistricting_fields,
    sizeof(rtC_2000_Redistricting_fields) / sizeof(TigerFieldInfo),
    112
  };

static TigerFieldInfo rtC_fields[] = {
  // fieldname    fmt  type OFTType      beg  end  len  bDefine bSet bWrite
  { "MODULE",     ' ', ' ', OFTString,     0,   0,   8,       1,   0,     0 },
  { "STATE",      'L', 'N', OFTInteger,    6,   7,   2,       1,   1,     1 },
  { "COUNTY",     'L', 'N', OFTInteger,    8,  10,   3,       1,   1,     1 },
  { "FIPSYR",     'L', 'N', OFTString,    11,  12,   4,       1,   1,     1 },
  { "FIPS",       'L', 'N', OFTInteger,   13,  17,   5,       1,   1,     1 },
  { "FIPSCC",     'L', 'A', OFTString,    18,  19,   2,       1,   1,     1 },
  { "PDC",        'L', 'A', OFTString,    20,  20,   1,       1,   1,     1 },
  { "LASAD",      'L', 'A', OFTString,    21,  22,   2,       1,   1,     1 },
  { "ENTITY",     'L', 'A', OFTString,    23,  23,   1,       1,   1,     1 },
  { "MA",         'L', 'N', OFTInteger,   24,  27,   4,       1,   1,     1 },
  { "SD",         'L', 'N', OFTInteger,   28,  32,   5,       1,   1,     1 },
  { "AIR",        'L', 'N', OFTInteger,   33,  36,   4,       1,   1,     1 },
  { "VTD",        'R', 'A', OFTString,    37,  42,   6,       1,   1,     1 },
  { "UA",         'L', 'N', OFTInteger,   43,  46,   4,       1,   1,     1 },
  { "NAME",       'L', 'A', OFTString,    47, 112,  66,       1,   1,     1 }
};
static TigerRecordInfo rtC_info =
  {
    rtC_fields,
    sizeof(rtC_fields) / sizeof(TigerFieldInfo),
    112
  };


/************************************************************************/
/*                          TigerEntityNames()                          */
/************************************************************************/

TigerEntityNames::TigerEntityNames( OGRTigerDataSource * poDSIn,
                            const char * pszPrototypeModule )

{
    poDS = poDSIn;
    poFeatureDefn = new OGRFeatureDefn( "EntityNames" );
    poFeatureDefn->SetGeomType( wkbPoint );

    if( poDS->GetVersion() >= TIGER_2002 ) {
      psRTCInfo = &rtC_2002_info;
    } else if( poDS->GetVersion() >= TIGER_2000_Redistricting ) {
      psRTCInfo = &rtC_2000_Redistricting_info;
    } else {
      psRTCInfo = &rtC_info;
    }

    AddFieldDefns( psRTCInfo, poFeatureDefn );
}

/************************************************************************/
/*                         ~TigerEntityNames()                          */
/************************************************************************/

TigerEntityNames::~TigerEntityNames()

{
}

/************************************************************************/
/*                             SetModule()                              */
/************************************************************************/

int TigerEntityNames::SetModule( const char * pszModule )

{
    if( !OpenFile( pszModule, "C" ) )
        return FALSE;

    EstablishFeatureCount();
    
    return TRUE;
}

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

OGRFeature *TigerEntityNames::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 %sC",
                  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 %sC",
                  nRecordId * nRecordLength, pszModule );
        return NULL;
    }

    if( VSIFRead( achRecord, psRTCInfo->nRecordLength, 1, fpPrimary ) != 1 )
    {
        CPLError( CE_Failure, CPLE_FileIO,
                  "Failed to read record %d of %sC",
                  nRecordId, pszModule );
        return NULL;
    }

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

    OGRFeature  *poFeature = new OGRFeature( poFeatureDefn );

    SetFields( psRTCInfo, poFeature, achRecord );

    return poFeature;
}

/************************************************************************/
/*                           CreateFeature()                            */
/************************************************************************/

OGRErr TigerEntityNames::CreateFeature( OGRFeature *poFeature )

{
    char        szRecord[OGR_TIGER_RECBUF_LEN];

    if( !SetWriteModule( FILE_CODE, psRTCInfo->nRecordLength+2, poFeature ) )
        return OGRERR_FAILURE;

    memset( szRecord, ' ', psRTCInfo->nRecordLength );

    WriteFields( psRTCInfo, poFeature, szRecord );

    WriteRecord( szRecord, psRTCInfo->nRecordLength, FILE_CODE );

    return OGRERR_NONE;
}