Line data    Source code

       1             : /******************************************************************************
       2             :  *
       3             :  * Project:  DXF Translator
       4             :  * Purpose:  Implements OGRDXFBlocksWriterLayer used for capturing block
       5             :  *           definitions for writing to a DXF file.
       6             :  * Author:   Frank Warmerdam, warmerdam@pobox.com
       7             :  *
       8             :  ******************************************************************************
       9             :  * Copyright (c) 2010, 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             : #include "ogr_dxf.h"
      31             : #include "cpl_conv.h"
      32             : #include "cpl_string.h"
      33             : #include "ogr_featurestyle.h"
      34             : 
      35             : /************************************************************************/
      36             : /*                      OGRDXFBlocksWriterLayer()                       */
      37             : /************************************************************************/
      38             : 
      39           2 : OGRDXFBlocksWriterLayer::OGRDXFBlocksWriterLayer(OGRDXFWriterDS * /* poDS */)
      40           2 :     : poFeatureDefn(new OGRFeatureDefn("blocks"))
      41             : {
      42           2 :     poFeatureDefn->Reference();
      43             : 
      44           2 :     OGRDXFDataSource::AddStandardFields(poFeatureDefn, ODFM_IncludeBlockFields);
      45           2 : }
      46             : 
      47             : /************************************************************************/
      48             : /*                      ~OGRDXFBlocksWriterLayer()                      */
      49             : /************************************************************************/
      50             : 
      51           4 : OGRDXFBlocksWriterLayer::~OGRDXFBlocksWriterLayer()
      52             : 
      53             : {
      54           6 :     for (size_t i = 0; i < apoBlocks.size(); i++)
      55           4 :         delete apoBlocks[i];
      56             : 
      57           2 :     if (poFeatureDefn)
      58           2 :         poFeatureDefn->Release();
      59           4 : }
      60             : 
      61             : /************************************************************************/
      62             : /*                           TestCapability()                           */
      63             : /************************************************************************/
      64             : 
      65           4 : int OGRDXFBlocksWriterLayer::TestCapability(const char *pszCap)
      66             : 
      67             : {
      68           4 :     return EQUAL(pszCap, OLCSequentialWrite);
      69             : }
      70             : 
      71             : /************************************************************************/
      72             : /*                            CreateField()                             */
      73             : /*                                                                      */
      74             : /*      This is really a dummy as our fields are precreated.            */
      75             : /************************************************************************/
      76             : 
      77           0 : OGRErr OGRDXFBlocksWriterLayer::CreateField(const OGRFieldDefn *poField,
      78             :                                             int bApproxOK)
      79             : 
      80             : {
      81           0 :     if (poFeatureDefn->GetFieldIndex(poField->GetNameRef()) >= 0 && bApproxOK)
      82           0 :         return OGRERR_NONE;
      83             : 
      84           0 :     CPLError(CE_Failure, CPLE_AppDefined,
      85             :              "DXF layer does not support arbitrary field creation, field '%s' "
      86             :              "not created.",
      87             :              poField->GetNameRef());
      88             : 
      89           0 :     return OGRERR_FAILURE;
      90             : }
      91             : 
      92             : /************************************************************************/
      93             : /*                           ICreateFeature()                            */
      94             : /*                                                                      */
      95             : /*      We just stash a copy of the features for later writing to       */
      96             : /*      the blocks section of the header.                               */
      97             : /************************************************************************/
      98             : 
      99           4 : OGRErr OGRDXFBlocksWriterLayer::ICreateFeature(OGRFeature *poFeature)
     100             : 
     101             : {
     102           4 :     apoBlocks.push_back(poFeature->Clone());
     103             : 
     104           4 :     return OGRERR_NONE;
     105             : }
     106             : 
     107             : /************************************************************************/
     108             : /*                             FindBlock()                              */
     109             : /************************************************************************/
     110             : 
     111           7 : OGRFeature *OGRDXFBlocksWriterLayer::FindBlock(const char *pszBlockName)
     112             : 
     113             : {
     114          16 :     for (size_t i = 0; i < apoBlocks.size(); i++)
     115             :     {
     116          14 :         const char *pszThisName = apoBlocks[i]->GetFieldAsString("Block");
     117             : 
     118          14 :         if (pszThisName != nullptr && strcmp(pszBlockName, pszThisName) == 0)
     119           5 :             return apoBlocks[i];
     120             :     }
     121             : 
     122           2 :     return nullptr;
     123             : }