esrishape.cpp

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#if defined(_MSC_VER) || defined(__MINGW32__)
    #include <stdio.h>
    #include <io.h>
#else
    #include <unistd.h>
#endif 

#include "ESRIShape.h"

using namespace ESRIShape ;

#define SAFE_DELETE_ARRAY( ptr ) delete[] ptr; ptr = 0L;

template <class T>
inline void swapBytes(  T &s )
{
    if( sizeof( T ) == 1 ) return;

    T d = s;
    BytePtr sptr = (BytePtr)&s;
    BytePtr dptr = &(((BytePtr)&d)[sizeof(T)-1]);

    for( unsigned int i = 0; i < sizeof(T); i++ )
        *(sptr++) = *(dptr--);
}

inline ByteOrder getByteOrder()
{
    int one = 1;
    unsigned char *ptr = (unsigned char *)&one;
    if( ptr[0] == 1 )
        return LittleEndian;
    else
        return BigEndian;
}

template <class T>
inline bool readVal( int fd, T &val, ByteOrder bo = LittleEndian )
{
    int nbytes = 0;
    if( (nbytes = ::read( fd, &val, sizeof(T))) <= 0 ) 
        return false;

    if( getByteOrder() != bo )
        swapBytes<T>(val);

    return true;
}

inline void printType( ShapeType type )
{
    printf( "%s",
        type == ShapeTypeNullShape   ? "NullShape" :
        type == ShapeTypePoint       ? "Point" :
        type == ShapeTypePolyLine    ? "PolyLine" :
        type == ShapeTypePolygon     ? "Polygon" :
        type == ShapeTypeMultiPoint  ? "MultiPoint" :
        type == ShapeTypePointZ      ? "PointZ" :
        type == ShapeTypePolyLineZ   ? "PolyLineZ" :
        type == ShapeTypePolygonZ    ? "PolygonZ" :
        type == ShapeTypeMultiPointZ ? "MultiPointZ" :
        type == ShapeTypePointM      ? "PointM" :
        type == ShapeTypePolyLineM   ? "PolyLineM" :
        type == ShapeTypePolygonM    ? "PolygonM" :
        type == ShapeTypeMultiPointM ? "MultiPointM" :
        type == ShapeTypeMultiPatch  ? "MultiPatch" : "Unknown" );
}


bool BoundingBox::read( int fd )
{
    if( readVal<Double>(fd, Xmin, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Ymin, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Xmax, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Ymax, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Zmin, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Zmax, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Mmin, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, Mmax, LittleEndian ) == false ) return false;

    return true;
}

void BoundingBox::print()
{
    printf( "    Xmin: %G\n", Xmin );
    printf( "    Ymin: %G\n", Ymin );
    printf( "    Xmax: %G\n", Xmax );
    printf( "    Ymax: %G\n", Ymax );
    printf( "    Zmin: %G\n", Zmin );
    printf( "    Zmax: %G\n", Zmax );
    printf( "    Mmin: %G\n", Mmin );
    printf( "    Mmax: %G\n", Mmax );
}


bool ShapeHeader::read(int fd)
{
    if( readVal<Integer>( fd, fileCode, BigEndian ) == false ) return false;
    if( ::read( fd, _unused_0, sizeof(_unused_0)) <= 0 ) return false;
    if( readVal<Integer>( fd, fileLength, BigEndian ) == false ) return false;
    if( readVal<Integer>( fd, version, LittleEndian ) == false ) return false;
    if( readVal<Integer>( fd, shapeType, LittleEndian ) == false ) return false;
    bbox.read(fd);
    return true;
}

void ShapeHeader::print()
{
    printf( "File Code: %d\n", fileCode );
    printf( "File Length: %d\n", fileLength );
    printf( "Version: %d\n", version );
    printf( "Shape Type: "); printType( ShapeType(shapeType) ); printf( "\n" );
    printf( "Bounding Box:\n" );
    bbox.print();
}

RecordHeader::RecordHeader(): 
    recordNumber(-1), 
    contentLength(0) 
{
}

bool RecordHeader::read( int fd )
{
    if( readVal<Integer>( fd, recordNumber, BigEndian ) == false ) return false;
    if( readVal<Integer>( fd, contentLength, BigEndian ) == false ) return false;
    return true;
}

void RecordHeader::print()
{
    printf( " Record Number: %d\n", recordNumber );
    printf( "Content Length: %d\n", contentLength );
}



NullRecord::NullRecord(): 
    shapeType(ShapeTypeNullShape) 
{}

bool NullRecord::read( int fd )
{
    if( readVal<Integer>( fd, shapeType, LittleEndian ) == false ) return false;
    return true;
}


Box::Box() {}
Box::Box(const Box &b ):
    Xmin(b.Xmin),
    Ymin(b.Ymin),
    Xmax(b.Xmax),
    Ymax(b.Ymax)
    {}

bool Box::read( int fd )
{
    if( readVal<Double>(fd, Xmin, LittleEndian) == false ) return false;
    if( readVal<Double>(fd, Ymin, LittleEndian) == false ) return false;
    if( readVal<Double>(fd, Xmax, LittleEndian) == false ) return false;
    if( readVal<Double>(fd, Ymax, LittleEndian) == false ) return false;
    return true;
}

Range::Range() {}
Range::Range( const Range &r ): min(r.min), max(r.max) {}

bool Range::read( int fd )
{
    if( readVal<Double>(fd, min, LittleEndian ) == false ) return false;
    if( readVal<Double>(fd, max, LittleEndian ) == false ) return false;
    return true;
}

ShapeObject::ShapeObject(ShapeType s):
    shapeType(s) 
{}

ShapeObject::~ShapeObject()
{ }



Point::Point(): 
    ShapeObject(ShapeTypePoint),  
    x(0.0),
    y(0.0) 
{}

Point::Point(const Point &p): 
    ShapeObject(ShapeTypePoint), 
    x(p.x), 
    y(p.y) 
{}

Point::~Point() {}

bool Point::read( int fd )
{

    if( readVal<Double>( fd, x, LittleEndian ) == false ) return false;
    if( readVal<Double>( fd, y, LittleEndian ) == false ) return false;

    return true;
}

bool PointRecord::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypePoint )
        return false;

    return point.read(fd);
}

void Point::print()
{
    printf( "    %G %G\n", x, y );
}

MultiPoint::MultiPoint(): 
    ShapeObject(ShapeTypeMultiPoint), 
    numPoints(0), 
    points(0L) 
{}

MultiPoint::MultiPoint( const struct MultiPoint &mpoint ): ShapeObject(ShapeTypeMultiPoint), 
    bbox(mpoint.bbox),
    numPoints(mpoint.numPoints)
{
    points = new Point[numPoints];
    for( int i = 0; i < numPoints; i++ )
        points[i] = mpoint.points[i];
}

MultiPoint::~MultiPoint()
{
    delete[] points;
}

bool MultiPoint::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;
    
    SAFE_DELETE_ARRAY( points );

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypeMultiPoint )
        return false;

    if( bbox.read(fd) == false )
        return false;

    if( readVal<Integer>(fd, numPoints, LittleEndian ) == false )
        return false;
    
    points = new struct Point[numPoints];
    for( Integer i = 0; i < numPoints; i++ )
    {
        if( points[i].read(fd) == false )
            return false;
    }
    return true;
}

void MultiPoint::print()
{
    printf( "Point - numPoints: %d\n", numPoints );
    for( int i= 0; i < numPoints; i++ )
        points[i].print();
}



PolyLine::PolyLine(): 
    ShapeObject(ShapeTypePolyLine), 
    numParts(0), 
    numPoints(0), 
    parts(0L), 
    points(0L) {}

PolyLine::PolyLine( const PolyLine &p ):
    ShapeObject(ShapeTypePolyLine), 
    numParts(p.numParts),
    numPoints(p.numPoints)
{
    parts = new Integer[numParts];
    Integer i;
    for(i = 0; i < numParts; i++ )
        parts[i] = p.parts[i];

    points = new Point[numPoints];
    for(i = 0; i < numPoints; i++ )
        points[i] = p.points[i];
}

PolyLine::~PolyLine() 
{
    delete [] parts;
    delete [] points;
}

bool PolyLine::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    SAFE_DELETE_ARRAY( parts );
    SAFE_DELETE_ARRAY( points );

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypePolyLine )
        return false;

    if( bbox.read(fd) == false )
        return false;

    if( readVal<Integer>(fd, numParts, LittleEndian ) == false )
        return false;

    if( readVal<Integer>(fd, numPoints, LittleEndian ) == false )
        return false;

    parts  = new Integer[numParts];
    int i;
    for( i = 0; i < numParts; i++ )
    {
        if( readVal<Integer>(fd, parts[i], LittleEndian ) == false )
            return false;

    }
    points = new struct Point[numPoints];
    for( i = 0; i < numPoints; i++ )
    {
        if( points[i].read(fd ) == false )
            return false;
    }
    return true;
}


Polygon::Polygon(): 
    ShapeObject(ShapeTypePolygon), 
    numParts(0), 
    numPoints(0), 
    parts(0L), 
    points(0L) {}

    Polygon::Polygon( const Polygon &p ):
    ShapeObject(ShapeTypePolygon), 
    numParts(p.numParts),
    numPoints(p.numPoints)
{
    parts = new Integer[numParts];
    Integer i;
    for( i = 0; i < numParts; i++ )
        parts[i] = p.parts[i];

    points = new Point[numPoints];
    for( i = 0; i < numPoints; i++ )
        points[i] = p.points[i];
}

Polygon::~Polygon()
{
    delete [] parts;
    delete [] points;
}


bool Polygon::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    SAFE_DELETE_ARRAY( parts );
    SAFE_DELETE_ARRAY( points );

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypePolygon )
        return false;

    if( bbox.read(fd) == false )
        return false;

    if( readVal<Integer>(fd, numParts, LittleEndian ) == false )
        return false;

    if( readVal<Integer>(fd, numPoints, LittleEndian ) == false )
        return false;

    parts  = new Integer[numParts];
    int i;
    for( i = 0; i < numParts; i++ )
    {
        if( readVal<Integer>(fd, parts[i], LittleEndian ) == false )
            return false;
    }
    points = new struct Point[numPoints];
    for( i = 0; i < numPoints; i++ )
    {
        if( points[i].read(fd ) == false )
            return false;
    }
    return true;
}

//////////////////////////////////////////////////////////////////////

PointM::PointM(): 
    ShapeObject(ShapeTypePointM),  
    x(0.0),
    y(0.0), 
    m(0.0) 
{}

PointM::PointM(const PointM &p): 
    ShapeObject(ShapeTypePointM), 
    x(p.x), 
    y(p.y), 
    m(p.m) 
{}

PointM::~PointM() {}

bool PointM::read( int fd )
{
    if( readVal<Double>( fd, x, LittleEndian ) == false ) return false;
    if( readVal<Double>( fd, y, LittleEndian ) == false ) return false;
    if( readVal<Double>( fd, m, LittleEndian ) == false ) return false;

    return true;
}

void PointM::print()
{
    printf( "    %G %G (%G)\n", x, y, m );
}

bool PointMRecord::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypePointM )
        return false;

    return pointM.read(fd);
}


MultiPointM::MultiPointM(): 
    ShapeObject(ShapeTypeMultiPointM), 
    numPoints(0), 
    points(0L),
    mArray(0L)
{}

    MultiPointM::MultiPointM( const struct MultiPointM &mpointm ): 
    ShapeObject(ShapeTypeMultiPointM), 
    bbox(mpointm.bbox),
    numPoints(mpointm.numPoints),
    mRange(mpointm.mRange)
{
    points = new Point[numPoints];
    mArray = new Double[numPoints];
    for( int i = 0; i < numPoints; i++ )
    {
        points[i] = mpointm.points[i];
        mArray[i] = mpointm.mArray[i];
    }
}

MultiPointM::~MultiPointM()
{
    delete [] points;
    delete [] mArray;
}

bool MultiPointM::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    SAFE_DELETE_ARRAY( points );
    SAFE_DELETE_ARRAY( mArray );

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypeMultiPointM )
        return false;

    if( bbox.read(fd) == false )
        return false;

    if( readVal<Integer>(fd, numPoints, LittleEndian ) == false )
        return false;
    
    points = new struct Point[numPoints];
    Integer i;
    for( i = 0; i < numPoints; i++ )
    {
        if( points[i].read(fd) == false )
            return false;
    }

    int X = 40 + (16 * numPoints);
    if( rh.contentLength > X )
    {
        if( mRange.read(fd) == false )
            return false;

        mArray = new Double[numPoints];
        for( i = 0; i < numPoints; i++ )
        {
            if( readVal<Double>(fd, mArray[i], LittleEndian ) == false )
                return false;
        }
    }

    return true;
}

void MultiPointM::print()
{
    printf( "Point - numPoints: %d\n", numPoints );
    for( int i= 0; i < numPoints; i++ )
        points[i].print();
}

PolyLineM::PolyLineM(): 
    ShapeObject(ShapeTypePolyLineM), 
    numParts(0), 
    numPoints(0), 
    parts(0L), 
    points(0L),
    mArray(0L) 
{}

PolyLineM::PolyLineM(const PolyLineM &p): 
    ShapeObject(ShapeTypePolyLineM), 
    numParts(p.numParts), 
    numPoints(p.numPoints), 
    parts(0L), 
    points(0L),
    mArray(0L) 
{
    parts = new Integer[numParts];
    Integer i;
    for( i = 0; i < numParts; i++ )
        parts[i] = p.parts[i];

    points = new Point[numPoints];
    mArray = new Double[numPoints];
    for( i = 0; i < numPoints; i++ )
    {
        points[i] = p.points[i];
        mArray[i] = p.mArray[i];
    }
}

PolyLineM::~PolyLineM()
{
    delete [] parts;
    delete [] points;
    delete [] mArray;
}

bool PolyLineM::read( int fd )
{
    RecordHeader rh;
    if( rh.read(fd) == false )
        return false;

    SAFE_DELETE_ARRAY( parts );
    SAFE_DELETE_ARRAY( points );
    SAFE_DELETE_ARRAY( mArray );

    Integer shapeType;
    if( readVal<Integer>(fd, shapeType, LittleEndian ) == false )
        return false;

    if( shapeType != ShapeTypePolyLineM )
        return false;

    if( bbox.read(fd) == false )
        return false;

    if( readVal<Integer>(fd, numParts, LittleEndian ) == false )
        return false;

    if( readVal<Integer>(fd, numPoints, LittleEndian ) == false )
        return false;

    parts  = new Integer[numParts];
    int i;
    for( i = 0; i < numParts; i++ )
    {
        if( readVal<Integer>(fd, parts[i], LittleEndian ) == false )
            return false;

    }
    points = new struct Point[numPoints];
    for( i = 0; i < numPoints; i++ )
    {
        if( points[i].read(fd ) == false )
            return false;
    }

    int X = 44 + (4 * numParts);
    int Y = X + (16 * numPoints);

    if( rh.contentLength > Y )
    {
        mRange.read(fd);
        mArray = new Double[numPoints];
        for( i = 0; i < numPoints; i++  )