shpcat.c

ESRI SHAPE文件读/写源代码。SHAPE是GIS中的重要文件格式

/******************************************************************************
 * Copyright (c) 1999, Carl Anderson
 *
 * This code is based in part on the earlier work of 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.
 ******************************************************************************
 *
 *	shpcat
 *
 *  gcc shpcat.c ../shpopen.o -o shpcat
 *
 *  Utility program to concatenate two shapefiles
 *  Must be used in concert with dbfcat
 *
 */

#include "shapefil.h"

int main( int argc, char ** argv )

{
    SHPHandle	hSHP, cSHP;
    int		nShapeType, cShapeType, i, nEntities;
//    nEntities, nVertices, nParts, *panParts, i, iPart;
    double	adBounds[4];
    SHPObject	*shape;


/* -------------------------------------------------------------------- */
/*      Display a usage message.                                        */
/* -------------------------------------------------------------------- */
    if( argc != 3 )
    {
	printf( "shpcat from_shpfile to_shpfile\n" );
	exit( 1 );
    }

/* -------------------------------------------------------------------- */
/*      Open the passed shapefile.                                      */
/* -------------------------------------------------------------------- */
    hSHP = SHPOpen( argv[1], "rb" );

    if( hSHP == NULL )
    {
	printf( "Unable to open:%s\n", argv[1] );
	exit( 1 );
    }

    SHPGetInfo( hSHP, &nEntities, &nShapeType, NULL, NULL );


/* -------------------------------------------------------------------- */
/*      Open the passed shapefile.                                      */
/* -------------------------------------------------------------------- */
    cSHP = SHPOpen( argv[2], "rb+" );

    if( cSHP == NULL )
    {
	printf( "Unable to open:%s\n", argv[2] );
	exit( 1 );
    }

    SHPGetInfo( cSHP, NULL, &cShapeType, &(adBounds[0]), &(adBounds[2]) );

/* -------------------------------------------------------------------- */
/*	Skim over the list of shapes, printing all the vertices.	*/
/* -------------------------------------------------------------------- */
    for( i = 0; i < nEntities; i++ )
    {

        shape = SHPReadObject( hSHP, i );
        SHPWriteObject( cSHP, -1, shape );          
        SHPDestroyObject ( shape );
 
    }

    SHPClose( hSHP );
    SHPClose( cSHP );
}