s57.h

GIS系统支持库Geospatial Data Abstraction Library代码.GDAL is a translator library for raster geospatial dat

    int         GetOBJL();
    const char *GetDescription();
    const char *GetAcronym();

    char      **GetAttributeList( const char * = NULL );

    char        GetClassCode();
    char      **GetPrimitives();

    // attribute table methods.
    int         GetMaxAttrIndex() { return nAttrMax; }
    const char *GetAttrName( int i ) { return papszAttrNames[i]; }
    const char *GetAttrAcronym( int i ) { return papszAttrAcronym[i]; }
    char      **GetAttrValues( int i ) { return papapszAttrValues[i]; }
    char        GetAttrType( int i ) { return pachAttrType[i]; }
#define SAT_ENUM        'E'
#define SAT_LIST        'L'
#define SAT_FLOAT       'F'
#define SAT_INT         'I'
#define SAT_CODE_STRING 'A'
#define SAT_FREE_TEXT   'S'

    char        GetAttrClass( int i ) { return pachAttrClass[i]; }
    int         FindAttrByAcronym( const char * );

};



/************************************************************************/
/*                            DDFRecordIndex                            */
/*                                                                      */
/*      Maintain an index of DDF records based on an integer key.       */
/************************************************************************/

typedef struct
{
    int         nKey;
    DDFRecord   *poRecord;
    void        *pClientData;
} DDFIndexedRecord;

class CPL_DLL DDFRecordIndex
{
    int         bSorted;

    int         nRecordCount;
    int         nRecordMax;

    int         nLastObjlPos;            /* rjensen. added for FindRecordByObjl() */
    int         nLastObjl;                  /* rjensen. added for FindRecordByObjl() */

    DDFIndexedRecord *pasRecords;

    void        Sort();

public:
                DDFRecordIndex();
               ~DDFRecordIndex();

    void        AddRecord( int nKey, DDFRecord * );
    int         RemoveRecord( int nKey );

    DDFRecord  *FindRecord( int nKey );

    DDFRecord  *FindRecordByObjl( int nObjl );    /* rjensen. added for FindRecordByObjl() */

    void        Clear();

    int         GetCount() { return nRecordCount; }

    DDFRecord  *GetByIndex( int i );
    void        *GetClientInfoByIndex( int i );
    void        SetClientInfoByIndex( int i, void *pClientInfo );
};

/************************************************************************/
/*                              S57Reader                               */
/************************************************************************/

class CPL_DLL S57Reader
{
    S57ClassRegistrar  *poRegistrar;

    int                 nFDefnCount;
    OGRFeatureDefn      **papoFDefnList;

    OGRFeatureDefn      *apoFDefnByOBJL[MAX_CLASSES];

    char                *pszModuleName;
    char                *pszDSNM;

    DDFModule           *poModule;

    int                 nCOMF;  /* Coordinate multiplier */
    int                 nSOMF;  /* Vertical (sounding) multiplier */

    int                 bFileIngested;
    DDFRecordIndex      oVI_Index;
    DDFRecordIndex      oVC_Index;
    DDFRecordIndex      oVE_Index;
    DDFRecordIndex      oVF_Index;

    int                 nNextVIIndex;
    int                 nNextVCIndex;
    int                 nNextVEIndex;
    int                 nNextVFIndex;

    int                 nNextFEIndex;
    DDFRecordIndex      oFE_Index;

    char                **papszOptions;

    int                 nOptionFlags; 

    int                 iPointOffset;
    OGRFeature          *poMultiPoint;

    void                ClearPendingMultiPoint();
    OGRFeature         *NextPendingMultiPoint();

    OGRFeature         *AssembleFeature( DDFRecord  *, OGRFeatureDefn * );

    void                ApplyObjectClassAttributes( DDFRecord *, OGRFeature *);
    void                GenerateLNAMAndRefs( DDFRecord *, OGRFeature * );
    void                GenerateFSPTAttributes( DDFRecord *, OGRFeature * );

    void                AssembleSoundingGeometry( DDFRecord *, OGRFeature * );
    void                AssemblePointGeometry( DDFRecord *, OGRFeature * );
    void                AssembleLineGeometry( DDFRecord *, OGRFeature * );
    void                AssembleAreaGeometry( DDFRecord *, OGRFeature * );

    int                 FetchPoint( int, int,
                                    double *, double *, double * = NULL );
    int                 FetchLine( DDFRecord *, int, int, OGRLineString * );

    OGRFeatureDefn     *FindFDefn( DDFRecord * );
    int                 ParseName( DDFField *, int = 0, int * = NULL );

    int                 ApplyRecordUpdate( DDFRecord *, DDFRecord * );

    int                 bMissingWarningIssued;
    int                 bAttrWarningIssued;

  public:
                        S57Reader( const char * );
                       ~S57Reader();

    void                SetClassBased( S57ClassRegistrar * );
    void                SetOptions( char ** );
    int                 GetOptionFlags() { return nOptionFlags; }

    int                 Open( int bTestOpen );
    void                Close();
    DDFModule           *GetModule() { return poModule; }
    const char          *GetDSNM() { return pszDSNM; }

    void                Ingest();
    int                 ApplyUpdates( DDFModule * );
    int                 FindAndApplyUpdates( const char *pszPath=NULL );

    void                Rewind();
    OGRFeature          *ReadNextFeature( OGRFeatureDefn * = NULL );
    OGRFeature          *ReadFeature( int nFID, OGRFeatureDefn * = NULL );
    OGRFeature          *ReadVector( int nFID, int nRCNM );

    int                 GetNextFEIndex( int nRCNM = 100 );
    void                SetNextFEIndex( int nNewIndex, int nRCNM = 100 );

    void                AddFeatureDefn( OGRFeatureDefn * );

    int                 CollectClassList( int *, int);

    OGRErr              GetExtent( OGREnvelope *psExtent, int bForce );

 };

/************************************************************************/
/*                              S57Writer                               */
/************************************************************************/

class CPL_DLL S57Writer
{
public:
                        S57Writer();
                        ~S57Writer();

    void                SetClassBased( S57ClassRegistrar * );
    int                 CreateS57File( const char *pszFilename );
    int                 Close();

    int                 WriteGeometry( DDFRecord *, int, double *, double *,
                                       double * );
    int                 WriteATTF( DDFRecord *, OGRFeature * );
    int                 WritePrimitive( OGRFeature *poFeature );
    int                 WriteCompleteFeature( OGRFeature *poFeature );
    int                 WriteDSID( const char *pszDSNM = NULL, 
                                   const char *pszISDT = NULL, 
                                   const char *pszSTED = NULL,
                                   int nAGEN = 0,
                                   const char *pszCOMT = NULL );
    int                 WriteDSPM( int nScale = 0 );

private:
    DDFModule           *poModule;
    S57ClassRegistrar   *poRegistrar;

    int                 nNext0001Index;

    DDFRecord           *MakeRecord();

    int                 nCOMF;  /* Coordinate multiplier */
    int                 nSOMF;  /* Vertical (sounding) multiplier */
};

/* -------------------------------------------------------------------- */
/*      Functions to create OGRFeatureDefns.                            */
/* -------------------------------------------------------------------- */
void           CPL_DLL  S57GenerateStandardAttributes( OGRFeatureDefn *, int );
OGRFeatureDefn CPL_DLL *S57GenerateGeomFeatureDefn( OGRwkbGeometryType, int );
OGRFeatureDefn CPL_DLL *S57GenerateObjectClassDefn( S57ClassRegistrar *, 
                                                    int, int );
OGRFeatureDefn CPL_DLL  *S57GenerateVectorPrimitiveFeatureDefn( int, int );

#endif /* ndef _S57_H_INCLUDED */