Line data    Source code

       1             : /******************************************************************************
       2             :  * $Id$
       3             :  *
       4             :  * Project:  OpenGIS Simple Features Reference Implementation
       5             :  * Purpose:  Private definitions within the OGR GMT driver.
       6             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       7             :  *
       8             :  ******************************************************************************
       9             :  * Copyright (c) 2007, Frank Warmerdam <warmerdam@pobox.com>
      10             :  *
      11             :  * Permission is hereby granted, free of charge, to any person obtaining a
      12             :  * copy of this software and associated documentation files (the "Software"),
      13             :  * to deal in the Software without restriction, including without limitation
      14             :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      15             :  * and/or sell copies of the Software, and to permit persons to whom the
      16             :  * Software is furnished to do so, subject to the following conditions:
      17             :  *
      18             :  * The above copyright notice and this permission notice shall be included
      19             :  * in all copies or substantial portions of the Software.
      20             :  *
      21             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      22             :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      23             :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      24             :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      25             :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      26             :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      27             :  * DEALINGS IN THE SOFTWARE.
      28             :  ****************************************************************************/
      29             : 
      30             : #ifndef OGRGMT_H_INCLUDED
      31             : #define OGRGMT_H_INCLUDED
      32             : 
      33             : #include "ogrsf_frmts.h"
      34             : #include "ogr_api.h"
      35             : #include "cpl_string.h"
      36             : 
      37             : /************************************************************************/
      38             : /*                             OGRGmtLayer                              */
      39             : /************************************************************************/
      40             : 
      41             : class OGRGmtLayer final : public OGRLayer,
      42             :                           public OGRGetNextFeatureThroughRaw<OGRGmtLayer>
      43             : {
      44             :     GDALDataset *m_poDS = nullptr;
      45             :     OGRSpatialReference *m_poSRS = nullptr;
      46             :     OGRFeatureDefn *poFeatureDefn;
      47             : 
      48             :     int iNextFID;
      49             : 
      50             :     bool bUpdate;
      51             :     bool bHeaderComplete;
      52             : 
      53             :     bool bRegionComplete;
      54             :     OGREnvelope sRegion;
      55             :     vsi_l_offset nRegionOffset;
      56             : 
      57             :     VSILFILE *m_fp = nullptr;
      58             : 
      59             :     bool ReadLine();
      60             :     CPLString osLine;
      61             :     char **papszKeyedValues;
      62             : 
      63             :     bool ScanAheadForHole();
      64             :     bool NextIsFeature();
      65             : 
      66             :     OGRFeature *GetNextRawFeature();
      67             : 
      68             :     OGRErr WriteGeometry(OGRGeometryH hGeom, bool bHaveAngle);
      69             :     OGRErr CompleteHeader(OGRGeometry *);
      70             : 
      71             :   public:
      72             :     bool bValidFile;
      73             : 
      74             :     OGRGmtLayer(GDALDataset *poDS, const char *pszFilename, VSILFILE *fp,
      75             :                 const OGRSpatialReference *poSRS, int bUpdate);
      76             :     virtual ~OGRGmtLayer();
      77             : 
      78             :     void ResetReading() override;
      79          50 :     DEFINE_GET_NEXT_FEATURE_THROUGH_RAW(OGRGmtLayer)
      80             : 
      81         352 :     OGRFeatureDefn *GetLayerDefn() override
      82             :     {
      83         352 :         return poFeatureDefn;
      84             :     }
      85             : 
      86             :     OGRErr GetExtent(OGREnvelope *psExtent, int bForce) override;
      87             : 
      88           0 :     virtual OGRErr GetExtent(int iGeomField, OGREnvelope *psExtent,
      89             :                              int bForce) override
      90             :     {
      91           0 :         return OGRLayer::GetExtent(iGeomField, psExtent, bForce);
      92             :     }
      93             : 
      94             :     OGRErr ICreateFeature(OGRFeature *poFeature) override;
      95             : 
      96             :     virtual OGRErr CreateField(const OGRFieldDefn *poField,
      97             :                                int bApproxOK = TRUE) override;
      98             : 
      99             :     int TestCapability(const char *) override;
     100             : 
     101          17 :     GDALDataset *GetDataset() override
     102             :     {
     103          17 :         return m_poDS;
     104             :     }
     105             : };
     106             : 
     107             : /************************************************************************/
     108             : /*                           OGRGmtDataSource                           */
     109             : /************************************************************************/
     110             : 
     111             : class OGRGmtDataSource final : public OGRDataSource
     112             : {
     113             :     OGRGmtLayer **papoLayers;
     114             :     int nLayers;
     115             : 
     116             :     char *pszName;
     117             : 
     118             :     bool bUpdate;
     119             : 
     120             :   public:
     121             :     OGRGmtDataSource();
     122             :     virtual ~OGRGmtDataSource();
     123             : 
     124             :     int Open(const char *pszFilename, VSILFILE *fp,
     125             :              const OGRSpatialReference *poSRS, int bUpdate);
     126             :     int Create(const char *pszFilename, char **papszOptions);
     127             : 
     128           0 :     const char *GetName() override
     129             :     {
     130           0 :         return pszName;
     131             :     }
     132             : 
     133           3 :     int GetLayerCount() override
     134             :     {
     135           3 :         return nLayers;
     136             :     }
     137             : 
     138             :     OGRLayer *GetLayer(int) override;
     139             : 
     140             :     OGRLayer *ICreateLayer(const char *pszName,
     141             :                            const OGRGeomFieldDefn *poGeomFieldDefn,
     142             :                            CSLConstList papszOptions) override;
     143             :     int TestCapability(const char *) override;
     144             : };
     145             : 
     146             : #endif /* ndef OGRGMT_H_INCLUDED */