pihmLIBS/shpopen.c File Reference

#include "shapefil.h"
#include <math.h>
#include <limits.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>

Include dependency graph for shpopen.c:

Go to the source code of this file.

Defines

#define FALSE   0

#define TRUE   1

#define ByteCopy(a, b, c)   memcpy( b, a, c )

#define MIN(a, b)   ((a<b) ? a : b)

#define MAX(a, b)   ((a>b) ? a : b)

Typedefs

typedef unsigned char uchar

typedef int int32

Functions

static void SwapWord (int length, void *wordP)

static void * SfRealloc (void *pMem, int nNewSize)

static void SHPWriteHeader (SHPHandle psSHP)

SHPHandle SHPAPI_CALL SHPOpen (const char *pszLayer, const char *pszAccess)

void SHPAPI_CALL SHPClose (SHPHandle psSHP)

void SHPAPI_CALL SHPGetInfo (SHPHandle psSHP, int *pnEntities, int *pnShapeType, double *padfMinBound, double *padfMaxBound)

SHPHandle SHPAPI_CALL SHPCreate (const char *pszLayer, int nShapeType)

static void _SHPSetBounds (uchar *pabyRec, SHPObject *psShape)

void SHPAPI_CALL SHPComputeExtents (SHPObject *psObject)

SHPObject SHPAPI_CALL1 * SHPCreateObject (int nSHPType, int nShapeId, int nParts, int *panPartStart, int *panPartType, int nVertices, double *padfX, double *padfY, double *padfZ, double *padfM){SHPObject *psObject;inti, bHasM, bHasZ;psObject=(SHPObject *) calloc(1, sizeof(SHPObject)

if (nSHPType==SHPT_ARCM||nSHPType==SHPT_POINTM||nSHPType==SHPT_POLYGONM||nSHPType==SHPT_MULTIPOINTM)

SHPComputeExtents (psObject)

return (psObject)

SHPObject SHPAPI_CALL1 * SHPCreateSimpleObject (int nSHPType, int nVertices, double *padfX, double *padfY, double *padfZ){return(SHPCreateObject(nSHPType,-1, 0, NULL, NULL, nVertices, padfX, padfY, padfZ, NULL)

int SHPAPI_CALL SHPWriteObject (SHPHandle psSHP, int nShapeId, SHPObject *psObject)

SHPObject SHPAPI_CALL1 * SHPReadObject (SHPHandle psSHP, int hEntity){SHPObject *psShape;if(hEntity< 0||hEntity >=psSHP->nRecords) return(NULL

if (psSHP->panRecSize[hEntity]+8 > psSHP->nBufSize)

fseek (psSHP->fpSHP, psSHP->panRecOffset[hEntity], 0)

fread (psSHP->pabyRec, psSHP->panRecSize[hEntity]+8, 1, psSHP->fpSHP)

memcpy (&psShape->nSHPType, psSHP->pabyRec+8, 4)

if (bBigEndian)

else if (psShape->nSHPType==SHPT_MULTIPOINT||psShape->nSHPType==SHPT_MULTIPOINTM||psShape->nSHPType==SHPT_MULTIPOINTZ)

return (psShape)

const char SHPAPI_CALL1 * SHPTypeName (int nSHPType){switch(nSHPType

const char SHPAPI_CALL1 * SHPPartTypeName (int nPartType){switch(nPartType

void SHPAPI_CALL SHPDestroyObject (SHPObject *psShape)

int SHPAPI_CALL SHPRewindObject (SHPHandle hSHP, SHPObject *psObject)

Variables

static char rcsid []

static int bBigEndian

psObject nSHPType = nSHPType

psObject nShapeId = nShapeId

psShape = (SHPObject *) calloc(1,sizeof(SHPObject))

psShape nShapeId = hEntity

Define Documentation

#define ByteCopy	(	a,
		b,
		c	)	memcpy( b, a, c )

Definition at line 185 of file shpopen.c.

Referenced by _SHPSetBounds(), SHPCreate(), SHPWriteHeader(), and SHPWriteObject().

#define FALSE 0

Definition at line 181 of file shpopen.c.

#define MAX	(	a,
		b		)	((a>b) ? a : b)

Definition at line 188 of file shpopen.c.

Referenced by SHPComputeExtents(), SHPOpen(), streamGen(), streamGenShp(), and streamSegmentationShp().

#define MIN	(	a,
		b		)	((a<b) ? a : b)

Definition at line 187 of file shpopen.c.

Referenced by SHPComputeExtents().

#define TRUE 1

Definition at line 182 of file shpopen.c.

Typedef Documentation

typedef int int32

Definition at line 177 of file shpopen.c.

typedef unsigned char uchar

Definition at line 172 of file shpopen.c.

Function Documentation

static void _SHPSetBounds	(	uchar *	pabyRec,
		SHPObject *	psShape
	)			`[static]`

Definition at line 724 of file shpopen.c.

References bBigEndian, ByteCopy, psShape, and SwapWord().

Referenced by SHPWriteObject().

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fread	(	psSHP->	pabyRec,
		psSHP->panRecSize+	8[hEntity],
		1	,
		psSHP->	fpSHP
	)

Referenced by DBFClose(), DBFOpen(), DBFReadAttribute(), DBFWriteAttribute(), DBFWriteAttributeDirectly(), DBFWriteTuple(), if(), and SHPOpen().

fseek	(	psSHP->	fpSHP,
		psSHP->	panRecOffset[hEntity],
		0
	)

Referenced by DBFClose(), DBFFlushRecord(), DBFOpen(), DBFReadAttribute(), DBFWriteAttribute(), DBFWriteAttributeDirectly(), DBFWriteHeader(), DBFWriteTuple(), eol(), if(), and SHPWriteHeader().

else if ( psShape-> nSHPType = = SHPT_MULTIPOINT || psShape->nSHPType == SHPT_MULTIPOINTM || psShape->nSHPType == SHPT_MULTIPOINTZ )

Definition at line 1454 of file shpopen.c.

References memcpy(), SHPInfo::pabyRec, psShape, and SwapWord().

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if ( bBigEndian )

Definition at line 1309 of file shpopen.c.

if	(	psSHP->panRecSize+	8[hEntity],
		psSHP->	nBufSize
	)

Definition at line 1290 of file shpopen.c.

References SHPInfo::nBufSize, SHPInfo::pabyRec, SHPInfo::panRecSize, and SfRealloc().

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else if ( nSHPType = = SHPT_ARCM || nSHPType == SHPT_POINTM || nSHPType == SHPT_POLYGONM || nSHPType == SHPT_MULTIPOINTM )

Definition at line 803 of file shpopen.c.

References FALSE, and TRUE.

memcpy	(	&psShape->	nSHPType,
		psSHP->pabyRec+	8,
		4
	)

return ( psShape )

return ( psObject )

static void* SfRealloc	(	void *	pMem,
		int	nNewSize
	)			`[static]`

Definition at line 221 of file shpopen.c.

References NULL.

void SHPAPI_CALL SHPClose ( SHPHandle psSHP )

Definition at line 553 of file shpopen.c.

References SHPInfo::bUpdated, SHPInfo::fpSHP, SHPInfo::fpSHX, NULL, SHPInfo::pabyRec, SHPInfo::panRecOffset, SHPInfo::panRecSize, and SHPWriteHeader().

Referenced by addSOrder(), addToFromNode(), catchmentPoly(), createTinShapeFile(), extractRiver4mTIN(), generateShape(), mergeFeatures(), simplifyPolySHP(), splitLineAtVertices(), and streamSegmentationShp().

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SHPComputeExtents ( psObject )

void SHPAPI_CALL SHPComputeExtents ( SHPObject * psObject )

Definition at line 749 of file shpopen.c.

References SHPObject::dfMMax, SHPObject::dfMMin, SHPObject::dfXMax, SHPObject::dfXMin, SHPObject::dfYMax, SHPObject::dfYMin, SHPObject::dfZMax, SHPObject::dfZMin, MAX, MIN, SHPObject::nVertices, SHPObject::padfM, SHPObject::padfX, SHPObject::padfY, and SHPObject::padfZ.

SHPHandle SHPAPI_CALL SHPCreate	(	const char *	pszLayer,
		int	nShapeType
	)

Definition at line 617 of file shpopen.c.

References bBigEndian, ByteCopy, FALSE, NULL, SHPOpen(), SwapWord(), and TRUE.

Referenced by catchmentPoly(), createTinShapeFile(), extractRiver4mTIN(), generateShape(), mergeFeatures(), polygonToPolyline(), simplifyPolySHP(), splitLineAtVertices(), and streamSegmentationShp().

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SHPObject SHPAPI_CALL1* SHPCreateObject	(	int	nSHPType,
		int	nShapeId,
		int	nParts,
		int *	panPartStart,
		int *	panPartType,
		int	nVertices,
		double *	padfX,
		double *	padfY,
		double *	padfZ,
		double *	padfM
	)

SHPObject SHPAPI_CALL1* SHPCreateSimpleObject	(	int	nSHPType,
		int	nVertices,
		double *	padfX,
		double *	padfY,
		double *	padfZ
	)

Referenced by catchmentPoly(), extractRiver4mTIN(), simplifyPolySHP(), splitLineAtVertices(), and streamGenShp().

void SHPAPI_CALL SHPDestroyObject ( SHPObject * psShape )

Definition at line 1694 of file shpopen.c.

References NULL, and psShape.

void SHPAPI_CALL SHPGetInfo	(	SHPHandle	psSHP,
		int *	pnEntities,
		int *	pnShapeType,
		double *	padfMinBound,
		double *	padfMaxBound
	)

Definition at line 588 of file shpopen.c.

References SHPInfo::adBoundsMax, SHPInfo::adBoundsMin, SHPInfo::nRecords, SHPInfo::nShapeType, and NULL.

Referenced by generatePolyFile(), generateShape(), and polygonToPolyLineDialogDlg::run().

SHPHandle SHPAPI_CALL SHPOpen	(	const char *	pszLayer,
		const char *	pszAccess
	)

Definition at line 341 of file shpopen.c.

References SHPInfo::adBoundsMax, SHPInfo::adBoundsMin, bBigEndian, SHPInfo::bUpdated, FALSE, SHPInfo::fpSHP, SHPInfo::fpSHX, fread(), MAX, memcpy(), SHPInfo::nFileSize, SHPInfo::nMaxRecords, SHPInfo::nRecords, SHPInfo::nShapeType, NULL, SHPInfo::panRecOffset, SHPInfo::panRecSize, SwapWord(), and TRUE.

Referenced by addSOrder(), addToFromNode(), extractRiver4mTIN(), generatePolyFile(), generateShape(), mergeFeatures(), polygonToPolyline(), attFileDlg::run(), polygonToPolyLineDialogDlg::run(), SHPCreate(), simplifyPolySHP(), and splitLineAtVertices().

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const char SHPAPI_CALL1* SHPPartTypeName ( )

Definition at line 1660 of file shpopen.c.

References SHPP_FIRSTRING, SHPP_INNERRING, SHPP_OUTERRING, SHPP_RING, SHPP_TRIFAN, and SHPP_TRISTRIP.

SHPObject SHPAPI_CALL1* SHPReadObject	(	SHPHandle	psSHP,
		int	hEntity
	)

int SHPAPI_CALL SHPRewindObject	(	SHPHandle	hSHP,
		SHPObject *	psObject
	)

Definition at line 1725 of file shpopen.c.

References FALSE, SHPObject::nParts, SHPObject::nSHPType, SHPObject::nVertices, SHPObject::padfX, SHPObject::padfY, SHPObject::panPartStart, SHPT_POLYGON, SHPT_POLYGONM, and SHPT_POLYGONZ.

const char SHPAPI_CALL1* SHPTypeName ( )

Definition at line 1603 of file shpopen.c.

References SHPT_ARC, SHPT_ARCM, SHPT_ARCZ, SHPT_MULTIPATCH, SHPT_MULTIPOINT, SHPT_MULTIPOINTM, SHPT_MULTIPOINTZ, SHPT_NULL, SHPT_POINT, SHPT_POINTM, SHPT_POINTZ, SHPT_POLYGON, SHPT_POLYGONM, and SHPT_POLYGONZ.

static void SHPWriteHeader ( SHPHandle psSHP ) [static]

Definition at line 237 of file shpopen.c.

References SHPInfo::adBoundsMax, SHPInfo::adBoundsMin, bBigEndian, ByteCopy, SHPInfo::fpSHP, SHPInfo::fpSHX, fseek(), SHPInfo::nFileSize, SHPInfo::nRecords, SHPInfo::nShapeType, SHPInfo::panRecOffset, SHPInfo::panRecSize, and SwapWord().

Referenced by SHPClose().

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int SHPAPI_CALL SHPWriteObject	(	SHPHandle	psSHP,
		int	nShapeId,
		SHPObject *	psObject
	)

Definition at line 914 of file shpopen.c.

References _SHPSetBounds(), bBigEndian, SHPInfo::bUpdated, ByteCopy, memcpy(), SHPInfo::nMaxRecords, SHPObject::nParts, SHPInfo::nRecords, SHPInfo::nShapeType, SHPObject::nSHPType, SHPObject::nVertices, pabyRec, SHPObject::panPartStart, SHPObject::panPartType, SHPInfo::panRecOffset, SHPInfo::panRecSize, SfRealloc(), SHPT_ARC, SHPT_ARCM, SHPT_ARCZ, SHPT_MULTIPATCH, SHPT_NULL, SHPT_POLYGON, SHPT_POLYGONM, SHPT_POLYGONZ, SwapWord(), and TRUE.

Referenced by catchmentPoly(), createTinShapeFile(), extractRiver4mTIN(), generateShape(), mergeFeatures(), simplifyPolySHP(), splitLineAtVertices(), and streamGenShp().

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static void SwapWord	(	int	length,
		void *	wordP
	)			`[static]`

Definition at line 200 of file shpopen.c.

Referenced by _SHPSetBounds(), if(), SHPCreate(), SHPOpen(), SHPWriteHeader(), and SHPWriteObject().

Variable Documentation

int bBigEndian [static]

Definition at line 191 of file shpopen.c.

Referenced by _SHPSetBounds(), SHPCreate(), SHPOpen(), SHPWriteHeader(), and SHPWriteObject().

psShape nShapeId = hEntity

Definition at line 1306 of file shpopen.c.

psObject nShapeId = nShapeId

Definition at line 798 of file shpopen.c.

psObject nSHPType = nSHPType

Definition at line 797 of file shpopen.c.

psShape = (SHPObject *) calloc(1,sizeof(SHPObject))

Definition at line 1305 of file shpopen.c.

Referenced by _SHPSetBounds(), if(), and SHPDestroyObject().

char rcsid[] [static]

Initial value:

 
  "$Id: shpopen.c,v 1.39 2002/08/26 06:46:56 warmerda Exp $"

Definition at line 161 of file shpopen.c.

Generated on Sun Aug 5 17:34:49 2007 for PIHMgis by

1.5.2


Defines
#define	FALSE 0
#define	TRUE 1
#define	ByteCopy(a, b, c) memcpy( b, a, c )
#define	MIN(a, b) ((a<b) ? a : b)
#define	MAX(a, b) ((a>b) ? a : b)
Typedefs
typedef unsigned char	uchar
typedef int	int32
Functions
static void	SwapWord (int length, void *wordP)
static void *	SfRealloc (void *pMem, int nNewSize)
static void	SHPWriteHeader (SHPHandle psSHP)
SHPHandle SHPAPI_CALL	SHPOpen (const char pszLayer, const char pszAccess)
void SHPAPI_CALL	SHPClose (SHPHandle psSHP)
void SHPAPI_CALL	SHPGetInfo (SHPHandle psSHP, int pnEntities, int pnShapeType, double padfMinBound, double padfMaxBound)
SHPHandle SHPAPI_CALL	SHPCreate (const char *pszLayer, int nShapeType)
static void	_SHPSetBounds (uchar pabyRec, SHPObject psShape)
void SHPAPI_CALL	SHPComputeExtents (SHPObject *psObject)
SHPObject SHPAPI_CALL1 *	SHPCreateObject (int nSHPType, int nShapeId, int nParts, int panPartStart, int panPartType, int nVertices, double padfX, double padfY, double padfZ, double padfM){SHPObject psObject;inti, bHasM, bHasZ;psObject=(SHPObject ) calloc(1, sizeof(SHPObject)
	if (nSHPType==SHPT_ARCM\|\|nSHPType==SHPT_POINTM\|\|nSHPType==SHPT_POLYGONM\|\|nSHPType==SHPT_MULTIPOINTM)
	SHPComputeExtents (psObject)
	return (psObject)
SHPObject SHPAPI_CALL1 *	SHPCreateSimpleObject (int nSHPType, int nVertices, double padfX, double padfY, double *padfZ){return(SHPCreateObject(nSHPType,-1, 0, NULL, NULL, nVertices, padfX, padfY, padfZ, NULL)
int SHPAPI_CALL	SHPWriteObject (SHPHandle psSHP, int nShapeId, SHPObject *psObject)
SHPObject SHPAPI_CALL1 *	SHPReadObject (SHPHandle psSHP, int hEntity){SHPObject *psShape;if(hEntity< 0\|\|hEntity >=psSHP->nRecords) return(NULL
	if (psSHP->panRecSize[hEntity]+8 > psSHP->nBufSize)
	fseek (psSHP->fpSHP, psSHP->panRecOffset[hEntity], 0)
	fread (psSHP->pabyRec, psSHP->panRecSize[hEntity]+8, 1, psSHP->fpSHP)
	memcpy (&psShape->nSHPType, psSHP->pabyRec+8, 4)
	if (bBigEndian)
else	if (psShape->nSHPType==SHPT_MULTIPOINT\|\|psShape->nSHPType==SHPT_MULTIPOINTM\|\|psShape->nSHPType==SHPT_MULTIPOINTZ)
	return (psShape)
const char SHPAPI_CALL1 *	SHPTypeName (int nSHPType){switch(nSHPType
const char SHPAPI_CALL1 *	SHPPartTypeName (int nPartType){switch(nPartType
void SHPAPI_CALL	SHPDestroyObject (SHPObject *psShape)
int SHPAPI_CALL	SHPRewindObject (SHPHandle hSHP, SHPObject *psObject)
Variables
static char	rcsid []
static int	bBigEndian
psObject	nSHPType = nSHPType
psObject	nShapeId = nShapeId
	psShape = (SHPObject *) calloc(1,sizeof(SHPObject))
psShape	nShapeId = hEntity