1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
|
/******************************************************************************
* $Id: ogrsegukooadatasource.cpp 23259 2011-10-20 21:11:42Z rouault $
*
* Project: SEG-P1 / UKOOA P1-90 Translator
* Purpose: Implements OGRSEGUKOOADataSource class
* Author: Even Rouault, even dot rouault at mines dash paris dot org
*
******************************************************************************
* Copyright (c) 2011, Even Rouault <even dot rouault at mines dash paris dot org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMSEGUKOOAS OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#include "ogr_segukooa.h"
#include "cpl_conv.h"
#include "cpl_string.h"
CPL_CVSID("$Id: ogrsegukooadatasource.cpp 23259 2011-10-20 21:11:42Z rouault $");
/************************************************************************/
/* OGRSEGUKOOADataSource() */
/************************************************************************/
OGRSEGUKOOADataSource::OGRSEGUKOOADataSource()
{
papoLayers = NULL;
nLayers = 0;
pszName = NULL;
}
/************************************************************************/
/* ~OGRSEGUKOOADataSource() */
/************************************************************************/
OGRSEGUKOOADataSource::~OGRSEGUKOOADataSource()
{
for( int i = 0; i < nLayers; i++ )
delete papoLayers[i];
CPLFree( papoLayers );
CPLFree( pszName );
}
/************************************************************************/
/* TestCapability() */
/************************************************************************/
int OGRSEGUKOOADataSource::TestCapability( const char * pszCap )
{
return FALSE;
}
/************************************************************************/
/* GetLayer() */
/************************************************************************/
OGRLayer *OGRSEGUKOOADataSource::GetLayer( int iLayer )
{
if( iLayer < 0 || iLayer >= nLayers )
return NULL;
else
return papoLayers[iLayer];
}
/************************************************************************/
/* Open() */
/************************************************************************/
int OGRSEGUKOOADataSource::Open( const char * pszFilename, int bUpdateIn)
{
if (bUpdateIn)
{
return FALSE;
}
pszName = CPLStrdup( pszFilename );
VSILFILE* fp = VSIFOpenL(pszFilename, "rb");
if (fp == NULL)
return FALSE;
const char* pszLine;
CPLPushErrorHandler(CPLQuietErrorHandler);
pszLine = CPLReadLine2L(fp,81,NULL);
CPLPopErrorHandler();
CPLErrorReset();
/* Both UKOOA P1/90 and SEG-P1 begins by a H character */
if (pszLine == NULL || pszLine[0] != 'H')
{
VSIFCloseL(fp);
return FALSE;
}
// --------------------------------------------------------------------
// Does this appear to be a UKOOA P1/90 file?
// --------------------------------------------------------------------
if (strncmp(pszLine, "H0100 ", 6) == 0)
{
VSIFSeekL( fp, 0, SEEK_SET );
VSILFILE* fp2 = VSIFOpenL(pszFilename, "rb");
if (fp2 == NULL)
{
VSIFCloseL(fp);
return FALSE;
}
nLayers = 2;
papoLayers = (OGRLayer**) CPLMalloc(2 * sizeof(OGRLayer*));
papoLayers[0] = new OGRUKOOAP190Layer(pszName, fp);
papoLayers[1] = new OGRSEGUKOOALineLayer(pszName,
new OGRUKOOAP190Layer(pszName, fp2));
return TRUE;
}
// --------------------------------------------------------------------
// Does this appear to be a SEG-P1 file?
// --------------------------------------------------------------------
/* Check first 20 header lines, and fetch the first point */
for(int iLine = 0; iLine < 21; iLine ++)
{
const char* szPtr = pszLine;
for(;*szPtr != '\0';szPtr++)
{
if (*szPtr != 9 && *szPtr < 32)
{
VSIFCloseL(fp);
return FALSE;
}
}
if (iLine == 20)
break;
CPLPushErrorHandler(CPLQuietErrorHandler);
pszLine = CPLReadLine2L(fp,81,NULL);
CPLPopErrorHandler();
CPLErrorReset();
if (pszLine == NULL)
{
VSIFCloseL(fp);
return FALSE;
}
}
char* pszExpandedLine = OGRSEGP1Layer::ExpandTabs(pszLine);
int nLatitudeCol = OGRSEGP1Layer::DetectLatitudeColumn(pszExpandedLine);
CPLFree(pszExpandedLine);
if (nLatitudeCol > 0)
{
VSIFSeekL( fp, 0, SEEK_SET );
VSILFILE* fp2 = VSIFOpenL(pszFilename, "rb");
if (fp2 == NULL)
{
VSIFCloseL(fp);
return FALSE;
}
nLayers = 2;
papoLayers = (OGRLayer**) CPLMalloc(2 * sizeof(OGRLayer*));
papoLayers[0] = new OGRSEGP1Layer(pszName, fp, nLatitudeCol);
papoLayers[1] = new OGRSEGUKOOALineLayer(pszName,
new OGRSEGP1Layer(pszName, fp2,
nLatitudeCol));
return TRUE;
}
VSIFCloseL(fp);
return FALSE;
}
|
