/* -------------------------------------------------------------------- */
/*      SHPObject - represents on shape (without attributes) read       */
/*      from the .shp file.                                             */
/* -------------------------------------------------------------------- */
typedef struct
{
    int		nSHPType;

    int		nShapeId; /* -1 is unknown/unassigned */

    int		nParts;
    int		*panPartStart;
    int		*panPartType;
    
    int		nVertices;
    double	*padfX;
    double	*padfY;
    double	*padfZ;
    double	*padfM;

    double	dfXMin;
    double	dfYMin;
    double	dfZMin;
    double	dfMMin;

    double	dfXMax;
    double	dfYMax;
    double	dfZMax;
    double	dfMMax;
} SHPObject;

/* -------------------------------------------------------------------- */
/*      SHP API Prototypes                                              */
/* -------------------------------------------------------------------- */
SHPHandle SHPAPI_CALL
      SHPOpen( const char * pszShapeFile, const char * pszAccess );
SHPHandle SHPAPI_CALL
      SHPCreate( const char * pszShapeFile, int nShapeType );
void SHPAPI_CALL
      SHPGetInfo( SHPHandle hSHP, int * pnEntities, int * pnShapeType,
                  double * padfMinBound, double * padfMaxBound );

SHPObject SHPAPI_CALL1(*)
      SHPReadObject( SHPHandle hSHP, int iShape );
int SHPAPI_CALL
      SHPWriteObject( SHPHandle hSHP, int iShape, SHPObject * psObject );

void SHPAPI_CALL
      SHPDestroyObject( SHPObject * psObject );
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 SHPAPI_CALL1(*)
      SHPCreateSimpleObject( int nSHPType, int nVertices,
                             double * padfX, double * padfY, double * padfZ );

int SHPAPI_CALL
      SHPRewindObject( SHPHandle hSHP, SHPObject * psObject );

void SHPAPI_CALL
      SHPClose( SHPHandle hSHP );

const char SHPAPI_CALL1(*)
      SHPTypeName( int nSHPType );
const char SHPAPI_CALL1(*)
      SHPPartTypeName( int nPartType );

/* -------------------------------------------------------------------- */
/*      Shape quadtree indexing API.                                    */
/* -------------------------------------------------------------------- */

/* this can be two or four for binary or quad tree */
#define MAX_SUBNODE	4

typedef struct shape_tree_node
{
    /* region covered by this node */
    double	adfBoundsMin[4];
    double	adfBoundsMax[4];

    /* list of shapes stored at this node.  The papsShapeObj pointers
       or the whole list can be NULL */
    int		nShapeCount;
    int		*panShapeIds;
    SHPObject   **papsShapeObj;

    int		nSubNodes;
    struct shape_tree_node *apsSubNode[MAX_SUBNODE];
    
} SHPTreeNode;

typedef struct
{
    SHPHandle   hSHP;
    
    int		nMaxDepth;
    int		nDimension;
    
    SHPTreeNode	*psRoot;
} SHPTree;

SHPTree SHPAPI_CALL1(*)
      SHPCreateTree( SHPHandle hSHP, int nDimension, int nMaxDepth,
                     double *padfBoundsMin, double *padfBoundsMax );
void    SHPAPI_CALL
      SHPDestroyTree( SHPTree * hTree );

int	SHPAPI_CALL
      SHPWriteTree( SHPTree *hTree, const char * pszFilename );
SHPTree SHPAPI_CALL
      SHPReadTree( const char * pszFilename );

int	SHPAPI_CALL
      SHPTreeAddObject( SHPTree * hTree, SHPObject * psObject );
int	SHPAPI_CALL
      SHPTreeAddShapeId( SHPTree * hTree, SHPObject * psObject );
int	SHPAPI_CALL
      SHPTreeRemoveShapeId( SHPTree * hTree, int nShapeId );

void 	SHPAPI_CALL
      SHPTreeTrimExtraNodes( SHPTree * hTree );

int    SHPAPI_CALL1(*)
      SHPTreeFindLikelyShapes( SHPTree * hTree,
                               double * padfBoundsMin,
                               double * padfBoundsMax,
                               int * );
int     SHPAPI_CALL
      SHPCheckBoundsOverlap( double *, double *, double *, double *, int );

/************************************************************************/
/*                             DBF Support.                             */
/************************************************************************/
typedef	struct
{
    FILE	*fp;

    int         nRecords;

    int		nRecordLength;
    int		nHeaderLength;
    int		nFields;
    int		*panFieldOffset;
    int		*panFieldSize;
    int		*panFieldDecimals;
    char	*pachFieldType;

    char	*pszHeader;

    int		nCurrentRecord;
    int		bCurrentRecordModified;
    char	*pszCurrentRecord;
    
    int		bNoHeader;
    int		bUpdated;
} DBFInfo;

typedef DBFInfo * DBFHandle;

typedef enum {
  FTString,
  FTInteger,
  FTDouble,
  FTLogical,
  FTInvalid
} DBFFieldType;

#define XBASE_FLDHDR_SZ       32

DBFHandle SHPAPI_CALL
      DBFOpen( const char * pszDBFFile, const char * pszAccess );
DBFHandle SHPAPI_CALL
      DBFCreate( const char * pszDBFFile );

int	SHPAPI_CALL
      DBFGetFieldCount( DBFHandle psDBF );
int	SHPAPI_CALL
      DBFGetRecordCount( DBFHandle psDBF );
int	SHPAPI_CALL
      DBFAddField( DBFHandle hDBF, const char * pszFieldName,
                   DBFFieldType eType, int nWidth, int nDecimals );

DBFFieldType SHPAPI_CALL
      DBFGetFieldInfo( DBFHandle psDBF, int iField, 
                       char * pszFieldName, int * pnWidth, int * pnDecimals );

int SHPAPI_CALL
      DBFGetFieldIndex(DBFHandle psDBF, const char *pszFieldName);

int 	SHPAPI_CALL
      DBFReadIntegerAttribute( DBFHandle hDBF, int iShape, int iField );
double 	SHPAPI_CALL
      DBFReadDoubleAttribute( DBFHandle hDBF, int iShape, int iField );
const char SHPAPI_CALL1(*)
      DBFReadStringAttribute( DBFHandle hDBF, int iShape, int iField );
const char SHPAPI_CALL1(*)
      DBFReadLogicalAttribute( DBFHandle hDBF, int iShape, int iField );
int     SHPAPI_CALL
      DBFIsAttributeNULL( DBFHandle hDBF, int iShape, int iField );

int SHPAPI_CALL
      DBFWriteIntegerAttribute( DBFHandle hDBF, int iShape, int iField, 
                                int nFieldValue );
int SHPAPI_CALL
      DBFWriteDoubleAttribute( DBFHandle hDBF, int iShape, int iField,
                               double dFieldValue );
int SHPAPI_CALL
      DBFWriteStringAttribute( DBFHandle hDBF, int iShape, int iField,
                               const char * pszFieldValue );
int SHPAPI_CALL
     DBFWriteNULLAttribute( DBFHandle hDBF, int iShape, int iField );

int SHPAPI_CALL
     DBFWriteLogicalAttribute( DBFHandle hDBF, int iShape, int iField,
			       const char lFieldValue);
int SHPAPI_CALL
     DBFWriteAttributeDirectly(DBFHandle psDBF, int hEntity, int iField,
                               void * pValue );
const char SHPAPI_CALL1(*)
      DBFReadTuple(DBFHandle psDBF, int hEntity );
int SHPAPI_CALL
      DBFWriteTuple(DBFHandle psDBF, int hEntity, void * pRawTuple );

DBFHandle SHPAPI_CALL
      DBFCloneEmpty(DBFHandle psDBF, const char * pszFilename );
 
void	SHPAPI_CALL
      DBFClose( DBFHandle hDBF );
char    SHPAPI_CALL
      DBFGetNativeFieldType( DBFHandle hDBF, int iField );

/*static*/ int DBFWriteAttribute(DBFHandle psDBF, int hEntity, int iField,
			     void * pValue );

#ifdef __cplusplus
}
#endif

#endif /* ndef _SHAPEFILE_H_INCLUDED */