1 : /******************************************************************************
2 : * $Id: ogrmemdatasource.cpp 13027 2007-11-25 19:21:57Z warmerdam $
3 : *
4 : * Project: OpenGIS Simple Features Reference Implementation
5 : * Purpose: Implements OGRMemDataSource class.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : ******************************************************************************
9 : * Copyright (c) 2003, 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_mem.h"
31 : #include "cpl_conv.h"
32 : #include "cpl_string.h"
33 :
34 : CPL_CVSID("$Id: ogrmemdatasource.cpp 13027 2007-11-25 19:21:57Z warmerdam $");
35 :
36 : /************************************************************************/
37 : /* OGRMemDataSource() */
38 : /************************************************************************/
39 :
40 126 : OGRMemDataSource::OGRMemDataSource( const char *pszFilename,
41 126 : char **papszOptions)
42 :
43 : {
44 126 : pszName = CPLStrdup(pszFilename);
45 126 : papoLayers = NULL;
46 126 : nLayers = 0;
47 126 : }
48 :
49 : /************************************************************************/
50 : /* ~OGRMemDataSource() */
51 : /************************************************************************/
52 :
53 126 : OGRMemDataSource::~OGRMemDataSource()
54 :
55 : {
56 126 : CPLFree( pszName );
57 :
58 258 : for( int i = 0; i < nLayers; i++ )
59 132 : delete papoLayers[i];
60 :
61 126 : CPLFree( papoLayers );
62 126 : }
63 :
64 : /************************************************************************/
65 : /* CreateLayer() */
66 : /************************************************************************/
67 :
68 : OGRLayer *
69 134 : OGRMemDataSource::CreateLayer( const char * pszLayerName,
70 : OGRSpatialReference *poSRS,
71 : OGRwkbGeometryType eType,
72 : char ** papszOptions )
73 :
74 : {
75 : /* -------------------------------------------------------------------- */
76 : /* Create the layer object. */
77 : /* -------------------------------------------------------------------- */
78 : OGRMemLayer *poLayer;
79 :
80 134 : poLayer = new OGRMemLayer( pszLayerName, poSRS, eType );
81 :
82 : /* -------------------------------------------------------------------- */
83 : /* Add layer to data source layer list. */
84 : /* -------------------------------------------------------------------- */
85 : papoLayers = (OGRMemLayer **)
86 134 : CPLRealloc( papoLayers, sizeof(OGRMemLayer *) * (nLayers+1) );
87 :
88 134 : papoLayers[nLayers++] = poLayer;
89 :
90 134 : return poLayer;
91 : }
92 :
93 : /************************************************************************/
94 : /* DeleteLayer() */
95 : /************************************************************************/
96 :
97 6 : OGRErr OGRMemDataSource::DeleteLayer( int iLayer )
98 :
99 : {
100 6 : if( iLayer >= 0 && iLayer < nLayers )
101 : {
102 2 : delete papoLayers[iLayer];
103 :
104 4 : for( int i = iLayer+1; i < nLayers; i++ )
105 2 : papoLayers[i-1] = papoLayers[i];
106 :
107 2 : nLayers--;
108 :
109 2 : return OGRERR_NONE;
110 : }
111 : else
112 4 : return OGRERR_FAILURE;
113 : }
114 :
115 : /************************************************************************/
116 : /* TestCapability() */
117 : /************************************************************************/
118 :
119 68 : int OGRMemDataSource::TestCapability( const char * pszCap )
120 :
121 : {
122 68 : if( EQUAL(pszCap,ODsCCreateLayer) )
123 66 : return TRUE;
124 2 : else if( EQUAL(pszCap,ODsCDeleteLayer) )
125 2 : return TRUE;
126 : else
127 0 : return FALSE;
128 : }
129 :
130 : /************************************************************************/
131 : /* GetLayer() */
132 : /************************************************************************/
133 :
134 512 : OGRLayer *OGRMemDataSource::GetLayer( int iLayer )
135 :
136 : {
137 512 : if( iLayer < 0 || iLayer >= nLayers )
138 4 : return NULL;
139 : else
140 508 : return papoLayers[iLayer];
141 : }
142 :
|
