1 : /******************************************************************************
2 : * $Id: ogravce00datasource.cpp 24747 2012-08-08 00:13:30Z warmerdam $
3 : *
4 : * Project: OGR
5 : * Purpose: Implements OGRAVCE00DataSource class.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : * James Flemer <jflemer@alum.rpi.edu>
8 : *
9 : ******************************************************************************
10 : * Copyright (c) 2002, Frank Warmerdam <warmerdam@pobox.com>
11 : * Copyright (c) 2006, James Flemer <jflemer@alum.rpi.edu>
12 : *
13 : * Permission is hereby granted, free of charge, to any person obtaining a
14 : * copy of this software and associated documentation files (the "Software"),
15 : * to deal in the Software without restriction, including without limitation
16 : * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 : * and/or sell copies of the Software, and to permit persons to whom the
18 : * Software is furnished to do so, subject to the following conditions:
19 : *
20 : * The above copyright notice and this permission notice shall be included
21 : * in all copies or substantial portions of the Software.
22 : *
23 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 : * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 : * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 : * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
29 : * DEALINGS IN THE SOFTWARE.
30 : ****************************************************************************/
31 :
32 : #include "ogr_avc.h"
33 : #include "cpl_conv.h"
34 : #include "cpl_string.h"
35 :
36 : CPL_CVSID("$Id: ogravce00datasource.cpp 24747 2012-08-08 00:13:30Z warmerdam $");
37 :
38 : /************************************************************************/
39 : /* OGRAVCE00DataSource() */
40 : /************************************************************************/
41 :
42 350 : OGRAVCE00DataSource::OGRAVCE00DataSource()
43 350 : : nLayers(0), pszName(NULL), psE00(NULL), papoLayers(NULL)
44 : {
45 350 : }
46 :
47 : /************************************************************************/
48 : /* ~OGRAVCE00DataSource() */
49 : /************************************************************************/
50 :
51 350 : OGRAVCE00DataSource::~OGRAVCE00DataSource()
52 :
53 : {
54 350 : if( psE00 )
55 : {
56 1 : AVCE00ReadCloseE00( psE00 );
57 1 : psE00 = NULL;
58 : }
59 :
60 350 : CPLFree( pszName );
61 :
62 352 : for( int i = 0; i < nLayers; i++ )
63 2 : delete papoLayers[i];
64 :
65 350 : CPLFree( papoLayers );
66 350 : }
67 :
68 : /************************************************************************/
69 : /* Open() */
70 : /************************************************************************/
71 :
72 350 : int OGRAVCE00DataSource::Open( const char * pszNewName, int bTestOpen )
73 :
74 : {
75 : /* -------------------------------------------------------------------- */
76 : /* Open the source file. Supress error reporting if we are in */
77 : /* TestOpen mode. */
78 : /* -------------------------------------------------------------------- */
79 350 : int bCompressed = FALSE;
80 :
81 350 : if( bTestOpen )
82 350 : CPLPushErrorHandler( CPLQuietErrorHandler );
83 :
84 350 : psE00 = AVCE00ReadOpenE00(pszNewName);
85 :
86 350 : if( CPLGetLastErrorNo() == CPLE_OpenFailed
87 : && strstr(CPLGetLastErrorMsg(),"compressed E00") != NULL )
88 : {
89 1 : bCompressed = TRUE;
90 : }
91 :
92 350 : if( bTestOpen )
93 : {
94 350 : CPLPopErrorHandler();
95 350 : CPLErrorReset();
96 : }
97 :
98 350 : if( psE00 == NULL )
99 : {
100 349 : if( bCompressed )
101 : {
102 : CPLError(CE_Failure, CPLE_OpenFailed,
103 : "This looks like a compressed E00 file and cannot be "
104 : "processed directly. You may need to uncompress it "
105 : "first using the E00compr library or the e00conv "
106 1 : "program." );
107 : }
108 349 : return FALSE;
109 : }
110 :
111 1 : pszName = CPLStrdup( pszNewName );
112 : /* pszCoverageName = CPLStrdup( psE00->pszCoverName ); */
113 1 : pszCoverageName = CPLStrdup( pszNewName );
114 :
115 : /* -------------------------------------------------------------------- */
116 : /* Create layers for the "interesting" sections of the coverage. */
117 : /* -------------------------------------------------------------------- */
118 : int iSection;
119 :
120 : papoLayers = (OGRAVCE00Layer **)
121 1 : CPLCalloc( sizeof(OGRAVCE00Layer *), psE00->numSections );
122 1 : nLayers = 0;
123 :
124 8 : for( iSection = 0; iSection < psE00->numSections; iSection++ )
125 : {
126 7 : AVCE00Section *psSec = psE00->pasSections + iSection;
127 :
128 7 : switch( psSec->eType )
129 : {
130 : case AVCFileARC:
131 : case AVCFilePAL:
132 : case AVCFileCNT:
133 : case AVCFileLAB:
134 : case AVCFileRPL:
135 : case AVCFileTXT:
136 2 : papoLayers[nLayers++] = new OGRAVCE00Layer( this, psSec );
137 2 : break;
138 :
139 : case AVCFileTX6:
140 0 : break;
141 :
142 : case AVCFileTABLE:
143 4 : CheckAddTable(psSec);
144 : break;
145 :
146 : case AVCFilePRJ:
147 : {
148 : #if 0
149 : poSRS = new OGRSpatialReference();
150 : char **papszPRJ;
151 : AVCE00File *hFile;
152 :
153 : hFile = AVCE00ReadOpen(psE00->pszCoverPath,
154 : psSec->pszFilename,
155 : psE00->eCoverType,
156 : psSec->eType,
157 : psE00->psDBCSInfo);
158 : if( hFile && poSRS == NULL )
159 : {
160 : papszPRJ = AVCE00ReadNextPrj( hFile );
161 :
162 : poSRS = new OGRSpatialReference();
163 : if( poSRS->importFromESRI( papszPRJ ) != OGRERR_NONE )
164 : {
165 : CPLError( CE_Warning, CPLE_AppDefined,
166 : "Failed to parse PRJ section, ignoring." );
167 : delete poSRS;
168 : poSRS = NULL;
169 : }
170 : AVCE00ReadClose( hFile );
171 : }
172 : #endif
173 : }
174 : break;
175 :
176 : default:
177 : ;
178 : }
179 : }
180 :
181 1 : return nLayers > 0;
182 : }
183 :
184 4 : int OGRAVCE00DataSource::CheckAddTable( AVCE00Section *psTblSection )
185 : {
186 4 : int i, nCount = 0;
187 12 : for (i = 0; i < nLayers; ++i)
188 : {
189 8 : if (papoLayers[i]->CheckSetupTable(psTblSection))
190 0 : ++nCount;
191 : }
192 4 : return nCount;
193 : }
194 :
195 : /************************************************************************/
196 : /* TestCapability() */
197 : /************************************************************************/
198 :
199 0 : int OGRAVCE00DataSource::TestCapability( const char * pszCap )
200 :
201 : {
202 0 : return FALSE;
203 : }
204 :
205 : /************************************************************************/
206 : /* GetLayer() */
207 : /************************************************************************/
208 :
209 1 : OGRLayer *OGRAVCE00DataSource::GetLayer( int iLayer )
210 :
211 : {
212 1 : if( iLayer < 0 || iLayer >= nLayers )
213 0 : return NULL;
214 : else
215 1 : return papoLayers[iLayer];
216 : }
217 :
218 : /************************************************************************/
219 : /* GetSpatialRef() */
220 : /************************************************************************/
221 0 : OGRSpatialReference *OGRAVCE00DataSource::GetSpatialRef()
222 : {
223 0 : if (NULL == poSRS && psE00 != NULL)
224 : /* if (psE00 != NULL) */
225 : {
226 : int iSection;
227 : AVCE00Section *psSec;
228 : char **pszPRJ;
229 :
230 0 : for( iSection = 0; iSection < psE00->numSections; iSection++ )
231 : {
232 0 : psSec = psE00->pasSections + iSection;
233 0 : if (psSec->eType == AVCFilePRJ)
234 : {
235 0 : AVCE00ReadGotoSectionE00(psE00, psSec, 0);
236 0 : pszPRJ = (char **)AVCE00ReadNextObjectE00(psE00);
237 0 : poSRS = new OGRSpatialReference();
238 0 : if( poSRS->importFromESRI( pszPRJ ) != OGRERR_NONE )
239 : {
240 : CPLError( CE_Warning, CPLE_AppDefined,
241 0 : "Failed to parse PRJ section, ignoring." );
242 0 : delete poSRS;
243 0 : poSRS = NULL;
244 : }
245 0 : break;
246 : }
247 : }
248 : }
249 0 : return poSRS;
250 : }
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