if() [6/9]

else if

(

psShape->

nSHPType = = SHPT_MULTIPOINT || psShape->nSHPType == SHPT_MULTIPOINTM || psShape->nSHPType == SHPT_MULTIPOINTZ

)

Definition at line 1883 of file shpopen.c.

    {
        int32           nPoints;
        int32           i, nOffset;
 
        if ( 44 + 4 > nEntitySize )
        {
            snprintf(szErrorMsg, sizeof(szErrorMsg),
                     "Corrupted .shp file : shape %d : nEntitySize = %d",
                     hEntity, nEntitySize);
            psSHP->sHooks.Error( szErrorMsg );
            SHPDestroyObject(psShape);
            return NULL;
        }
        memcpy( &nPoints, psSHP->pabyRec + 44, 4 );
 
        if( bBigEndian ) SwapWord( 4, &nPoints );
 
        if (nPoints > 50 * 1000 * 1000)
        {
            snprintf(szErrorMsg, sizeof(szErrorMsg),
                     "Corrupted .shp file : shape %d : nPoints = %d",
                     hEntity, nPoints);
            psSHP->sHooks.Error( szErrorMsg );
            SHPDestroyObject(psShape);
            return NULL;
        }
 
        nRequiredSize = 48 + nPoints * 16;
        if( psShape->nSHPType == SHPT_MULTIPOINTZ )
        {
            nRequiredSize += 16 + nPoints * 8;
        }
        if (nRequiredSize > nEntitySize)
        {
            snprintf(szErrorMsg, sizeof(szErrorMsg),
                     "Corrupted .shp file : shape %d : nPoints = %d, nEntitySize = %d",
                     hEntity, nPoints, nEntitySize);
            psSHP->sHooks.Error( szErrorMsg );
            SHPDestroyObject(psShape);
            return NULL;
        }
 
        psShape->nVertices = nPoints;
        psShape->padfX = (double *) calloc(nPoints,sizeof(double));
        psShape->padfY = (double *) calloc(nPoints,sizeof(double));
        psShape->padfZ = (double *) calloc(nPoints,sizeof(double));
        psShape->padfM = (double *) calloc(nPoints,sizeof(double));
 
        if (psShape->padfX == NULL ||
            psShape->padfY == NULL ||
            psShape->padfZ == NULL ||
            psShape->padfM == NULL)
        {
            snprintf(szErrorMsg, sizeof(szErrorMsg),
                     "Not enough memory to allocate requested memory (nPoints=%d) for shape %d. "
                     "Probably broken SHP file", hEntity, nPoints );
            psSHP->sHooks.Error( szErrorMsg );
            SHPDestroyObject(psShape);
            return NULL;
        }
 
        for( i = 0; i < nPoints; i++ )
        {
            memcpy(psShape->padfX+i, psSHP->pabyRec + 48 + 16 * i, 8 );
            memcpy(psShape->padfY+i, psSHP->pabyRec + 48 + 16 * i + 8, 8 );
 
            if( bBigEndian ) SwapWord( 8, psShape->padfX + i );
            if( bBigEndian ) SwapWord( 8, psShape->padfY + i );
        }
 
        nOffset = 48 + 16*nPoints;
 
/* -------------------------------------------------------------------- */
/*      Get the X/Y bounds.                                             */
/* -------------------------------------------------------------------- */
        memcpy( &(psShape->dfXMin), psSHP->pabyRec + 8 +  4, 8 );
        memcpy( &(psShape->dfYMin), psSHP->pabyRec + 8 + 12, 8 );
        memcpy( &(psShape->dfXMax), psSHP->pabyRec + 8 + 20, 8 );
        memcpy( &(psShape->dfYMax), psSHP->pabyRec + 8 + 28, 8 );
 
        if( bBigEndian ) SwapWord( 8, &(psShape->dfXMin) );
        if( bBigEndian ) SwapWord( 8, &(psShape->dfYMin) );
        if( bBigEndian ) SwapWord( 8, &(psShape->dfXMax) );
        if( bBigEndian ) SwapWord( 8, &(psShape->dfYMax) );
 
/* -------------------------------------------------------------------- */
/*      If we have a Z coordinate, collect that now.                    */
/* -------------------------------------------------------------------- */
        if( psShape->nSHPType == SHPT_MULTIPOINTZ )
        {
            memcpy( &(psShape->dfZMin), psSHP->pabyRec + nOffset, 8 );
            memcpy( &(psShape->dfZMax), psSHP->pabyRec + nOffset + 8, 8 );
 
            if( bBigEndian ) SwapWord( 8, &(psShape->dfZMin) );
            if( bBigEndian ) SwapWord( 8, &(psShape->dfZMax) );
 
            for( i = 0; i < nPoints; i++ )
            {
                memcpy( psShape->padfZ + i,
                        psSHP->pabyRec + nOffset + 16 + i*8, 8 );
                if( bBigEndian ) SwapWord( 8, psShape->padfZ + i );
            }
 
            nOffset += 16 + 8*nPoints;
        }
 
/* -------------------------------------------------------------------- */
/*      If we have a M measure value, then read it now.  We assume      */
/*      that the measure can be present for any shape if the size is    */
/*      big enough, but really it will only occur for the Z shapes      */
/*      (options), and the M shapes.                                    */
/* -------------------------------------------------------------------- */
        if( nEntitySize >= nOffset + 16 + 8*nPoints )
        {
            memcpy( &(psShape->dfMMin), psSHP->pabyRec + nOffset, 8 );
            memcpy( &(psShape->dfMMax), psSHP->pabyRec + nOffset + 8, 8 );
 
            if( bBigEndian ) SwapWord( 8, &(psShape->dfMMin) );
            if( bBigEndian ) SwapWord( 8, &(psShape->dfMMax) );
 
            for( i = 0; i < nPoints; i++ )
            {
                memcpy( psShape->padfM + i,
                        psSHP->pabyRec + nOffset + 16 + i*8, 8 );
                if( bBigEndian ) SwapWord( 8, psShape->padfM + i );
            }
            psShape->bMeasureIsUsed = TRUE;
        }
    }

References bBigEndian, nEntitySize, psShape, SHPDestroyObject(), SHPT_MULTIPOINTZ, SwapWord(), and TRUE.

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