1 : /******************************************************************************
2 : * $Id: tigerpolychainlink.cpp 10645 2007-01-18 02:22:39Z warmerdam $
3 : *
4 : * Project: TIGER/Line Translator
5 : * Purpose: Implements TigerPolyChainLink, providing access to .RTI files.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : ******************************************************************************
9 : * Copyright (c) 1999, Frank Warmerdam
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_tiger.h"
31 : #include "cpl_conv.h"
32 :
33 : CPL_CVSID("$Id: tigerpolychainlink.cpp 10645 2007-01-18 02:22:39Z warmerdam $");
34 :
35 : #define FILE_CODE "I"
36 :
37 : static TigerFieldInfo rtI_2002_fields[] = {
38 : // fieldname fmt type OFTType beg end len bDefine bSet bWrite
39 : { "MODULE", ' ', ' ', OFTString, 0, 0, 8, 1, 0, 0 },
40 : { "FILE", 'L', 'N', OFTInteger, 6, 10, 5, 1, 1, 1 },
41 : { "TLID", 'R', 'N', OFTInteger, 11, 20, 10, 1, 1, 1 },
42 : { "TZIDS", 'R', 'N', OFTInteger, 21, 30, 10, 1, 1, 1 },
43 : { "TZIDE", 'R', 'N', OFTInteger, 31, 40, 10, 1, 1, 1 },
44 : { "CENIDL", 'L', 'A', OFTString, 41, 45, 5, 1, 1, 1 },
45 : { "POLYIDL", 'R', 'N', OFTInteger, 46, 55, 10, 1, 1, 1 },
46 : { "CENIDR", 'L', 'A', OFTString, 56, 60, 5, 1, 1, 1 },
47 : { "POLYIDR", 'R', 'N', OFTInteger, 61, 70, 10, 1, 1, 1 },
48 : { "SOURCE", 'L', 'A', OFTString, 71, 80, 10, 1, 1, 1 },
49 : { "FTSEG", 'L', 'A', OFTString, 81, 97, 17, 1, 1, 1 },
50 : { "RS_I1", 'L', 'A', OFTString, 98, 107, 10, 1, 1, 1 },
51 : { "RS_I2", 'L', 'A', OFTString, 108, 117, 10, 1, 1, 1 },
52 : { "RS_I3", 'L', 'A', OFTString, 118, 127, 10, 1, 1, 1 },
53 : };
54 : static TigerRecordInfo rtI_2002_info =
55 : {
56 : rtI_2002_fields,
57 : sizeof(rtI_2002_fields) / sizeof(TigerFieldInfo),
58 : 127
59 : };
60 :
61 : static TigerFieldInfo rtI_fields[] = {
62 : // fieldname fmt type OFTType beg end len bDefine bSet bWrite
63 : { "MODULE", ' ', ' ', OFTString, 0, 0, 8, 1, 0, 0 },
64 : { "TLID", 'R', 'N', OFTInteger, 6, 15, 10, 1, 1, 1 },
65 : { "FILE", 'L', 'N', OFTString, 16, 20, 5, 1, 1, 1 },
66 : { "STATE", 'L', 'N', OFTInteger, 16, 17, 2, 1, 1, 1 },
67 : { "COUNTY", 'L', 'N', OFTInteger, 18, 20, 3, 1, 1, 1 },
68 : { "RTLINK", 'L', 'A', OFTString, 21, 21, 1, 1, 1, 1 },
69 : { "CENIDL", 'L', 'A', OFTString, 22, 26, 5, 1, 1, 1 },
70 : { "POLYIDL", 'R', 'N', OFTInteger, 27, 36, 10, 1, 1, 1 },
71 : { "CENIDR", 'L', 'A', OFTString, 37, 41, 5, 1, 1, 1 },
72 : { "POLYIDR", 'R', 'N', OFTInteger, 42, 51, 10, 1, 1, 1 }
73 : };
74 : static TigerRecordInfo rtI_info =
75 : {
76 : rtI_fields,
77 : sizeof(rtI_fields) / sizeof(TigerFieldInfo),
78 : 52
79 : };
80 :
81 :
82 : /************************************************************************/
83 : /* TigerPolyChainLink() */
84 : /************************************************************************/
85 :
86 : TigerPolyChainLink::TigerPolyChainLink( OGRTigerDataSource * poDSIn,
87 0 : const char * pszPrototypeModule )
88 :
89 : {
90 0 : OGRFieldDefn oField("",OFTInteger);
91 :
92 0 : poDS = poDSIn;
93 0 : poFeatureDefn = new OGRFeatureDefn( "PolyChainLink" );
94 0 : poFeatureDefn->Reference();
95 0 : poFeatureDefn->SetGeomType( wkbNone );
96 :
97 0 : if (poDS->GetVersion() >= TIGER_2002) {
98 0 : psRTIInfo = &rtI_2002_info;
99 : } else {
100 0 : psRTIInfo = &rtI_info;
101 : }
102 :
103 : /* -------------------------------------------------------------------- */
104 : /* Fields from type I record. */
105 : /* -------------------------------------------------------------------- */
106 :
107 0 : AddFieldDefns( psRTIInfo, poFeatureDefn );
108 0 : }
109 :
110 : /************************************************************************/
111 : /* ~TigerPolyChainLink() */
112 : /************************************************************************/
113 :
114 0 : TigerPolyChainLink::~TigerPolyChainLink()
115 :
116 : {
117 0 : }
118 :
119 : /************************************************************************/
120 : /* SetModule() */
121 : /************************************************************************/
122 :
123 0 : int TigerPolyChainLink::SetModule( const char * pszModule )
124 :
125 : {
126 0 : if( !OpenFile( pszModule, FILE_CODE ) )
127 0 : return FALSE;
128 :
129 0 : EstablishFeatureCount();
130 :
131 0 : return TRUE;
132 : }
133 :
134 : /************************************************************************/
135 : /* GetFeature() */
136 : /************************************************************************/
137 :
138 0 : OGRFeature *TigerPolyChainLink::GetFeature( int nRecordId )
139 :
140 : {
141 : char achRecord[OGR_TIGER_RECBUF_LEN];
142 :
143 0 : if( nRecordId < 0 || nRecordId >= nFeatures )
144 : {
145 : CPLError( CE_Failure, CPLE_FileIO,
146 : "Request for out-of-range feature %d of %sI",
147 0 : nRecordId, pszModule );
148 0 : return NULL;
149 : }
150 :
151 : /* -------------------------------------------------------------------- */
152 : /* Read the raw record data from the file. */
153 : /* -------------------------------------------------------------------- */
154 0 : if( fpPrimary == NULL )
155 0 : return NULL;
156 :
157 0 : if( VSIFSeek( fpPrimary, nRecordId * nRecordLength, SEEK_SET ) != 0 )
158 : {
159 : CPLError( CE_Failure, CPLE_FileIO,
160 : "Failed to seek to %d of %sI",
161 0 : nRecordId * nRecordLength, pszModule );
162 0 : return NULL;
163 : }
164 :
165 0 : if( VSIFRead( achRecord, psRTIInfo->nRecordLength, 1, fpPrimary ) != 1 )
166 : {
167 : CPLError( CE_Failure, CPLE_FileIO,
168 : "Failed to read record %d of %sI",
169 0 : nRecordId, pszModule );
170 0 : return NULL;
171 : }
172 :
173 : /* -------------------------------------------------------------------- */
174 : /* Set fields. */
175 : /* -------------------------------------------------------------------- */
176 :
177 0 : OGRFeature *poFeature = new OGRFeature( poFeatureDefn );
178 :
179 0 : SetFields( psRTIInfo, poFeature, achRecord );
180 :
181 0 : return poFeature;
182 : }
183 :
184 : /************************************************************************/
185 : /* CreateFeature() */
186 : /************************************************************************/
187 :
188 0 : OGRErr TigerPolyChainLink::CreateFeature( OGRFeature *poFeature )
189 :
190 : {
191 : char szRecord[OGR_TIGER_RECBUF_LEN];
192 :
193 0 : if( !SetWriteModule( FILE_CODE, psRTIInfo->nRecordLength+2, poFeature ) )
194 0 : return OGRERR_FAILURE;
195 :
196 0 : memset( szRecord, ' ', psRTIInfo->nRecordLength );
197 :
198 0 : WriteFields( psRTIInfo, poFeature, szRecord );
199 :
200 0 : WriteRecord( szRecord, psRTIInfo->nRecordLength, FILE_CODE );
201 :
202 0 : return OGRERR_NONE;
203 : }
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