1 : /**********************************************************************
2 : * $Id: gmlpropertydefn.cpp 17629 2009-09-10 14:51:45Z chaitanya $
3 : *
4 : * Project: GML Reader
5 : * Purpose: Implementation of GMLPropertyDefn
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : **********************************************************************
9 : * Copyright (c) 2002, 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 OR
22 : * 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 "gmlreader.h"
31 : #include "cpl_conv.h"
32 : #include "cpl_string.h"
33 :
34 : /************************************************************************/
35 : /* GMLPropertyDefn */
36 : /************************************************************************/
37 :
38 49 : GMLPropertyDefn::GMLPropertyDefn( const char *pszName,
39 : const char *pszSrcElement )
40 :
41 : {
42 49 : m_pszName = CPLStrdup( pszName );
43 49 : if( pszSrcElement != NULL )
44 49 : m_pszSrcElement = CPLStrdup( pszSrcElement );
45 : else
46 0 : m_pszSrcElement = NULL;
47 49 : m_eType = GMLPT_Untyped;
48 49 : m_nWidth = 0;
49 49 : m_nPrecision = 0;
50 49 : }
51 :
52 : /************************************************************************/
53 : /* ~GMLPropertyDefn() */
54 : /************************************************************************/
55 :
56 49 : GMLPropertyDefn::~GMLPropertyDefn()
57 :
58 : {
59 49 : CPLFree( m_pszName );
60 49 : CPLFree( m_pszSrcElement );
61 49 : }
62 :
63 : /************************************************************************/
64 : /* SetSrcElement() */
65 : /************************************************************************/
66 :
67 0 : void GMLPropertyDefn::SetSrcElement( const char *pszSrcElement )
68 :
69 : {
70 0 : CPLFree( m_pszSrcElement );
71 0 : if( pszSrcElement != NULL )
72 0 : m_pszSrcElement = CPLStrdup( pszSrcElement );
73 : else
74 0 : m_pszSrcElement = NULL;
75 0 : }
76 :
77 : /************************************************************************/
78 : /* AnalysePropertyValue() */
79 : /* */
80 : /* Examine the passed property value, and see if we need to */
81 : /* make the field type more specific, or more general. */
82 : /************************************************************************/
83 :
84 126 : void GMLPropertyDefn::AnalysePropertyValue( const char *pszValue,
85 : const char *pszOldValue )
86 :
87 : {
88 : (void) pszOldValue; // not used yet.
89 :
90 : /* -------------------------------------------------------------------- */
91 : /* If it is a zero length string, just return. We can't deduce */
92 : /* much from this. */
93 : /* -------------------------------------------------------------------- */
94 126 : if( *pszValue == '\0' )
95 0 : return;
96 :
97 : /* -------------------------------------------------------------------- */
98 : /* Does the string consist entirely of numeric values? */
99 : /* -------------------------------------------------------------------- */
100 126 : int bIsReal = FALSE;
101 :
102 126 : CPLValueType valueType = CPLGetValueType(pszValue);
103 126 : if (valueType == CPL_VALUE_STRING)
104 10 : m_eType = GMLPT_String;
105 : else
106 116 : bIsReal = (valueType == CPL_VALUE_REAL);
107 :
108 126 : if( m_eType == GMLPT_String )
109 : {
110 : /* grow the Width to the length of the string passed in */
111 : int nWidth;
112 10 : nWidth = strlen(pszValue);
113 10 : if ( m_nWidth < nWidth )
114 5 : SetWidth( nWidth );
115 : }
116 116 : else if( m_eType == GMLPT_Untyped || m_eType == GMLPT_Integer )
117 : {
118 84 : if( bIsReal )
119 4 : m_eType = GMLPT_Real;
120 : else
121 80 : m_eType = GMLPT_Integer;
122 : }
123 : }
124 :
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