root / trunk / libraries / libGPE-GML / src / org / gvsig / gpe / xml / GPEXmlParser.java @ 11165
History | View | Annotate | Download (3.99 KB)
1 |
package org.gvsig.gpe.xml; |
---|---|
2 |
|
3 |
import java.io.File; |
4 |
import java.io.FileNotFoundException; |
5 |
import java.io.IOException; |
6 |
import java.io.InputStream; |
7 |
|
8 |
import org.gvsig.gpe.GPEContentHandler; |
9 |
import org.gvsig.gpe.GPEErrorHandler; |
10 |
import org.gvsig.gpe.GPEParser; |
11 |
import org.xmlpull.v1.XmlPullParser; |
12 |
|
13 |
/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
|
14 |
*
|
15 |
* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
|
16 |
*
|
17 |
* This program is free software; you can redistribute it and/or
|
18 |
* modify it under the terms of the GNU General Public License
|
19 |
* as published by the Free Software Foundation; either version 2
|
20 |
* of the License, or (at your option) any later version.
|
21 |
*
|
22 |
* This program is distributed in the hope that it will be useful,
|
23 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
24 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
25 |
* GNU General Public License for more details.
|
26 |
*
|
27 |
* You should have received a copy of the GNU General Public License
|
28 |
* along with this program; if not, write to the Free Software
|
29 |
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
30 |
*
|
31 |
* For more information, contact:
|
32 |
*
|
33 |
* Generalitat Valenciana
|
34 |
* Conselleria d'Infraestructures i Transport
|
35 |
* Av. Blasco Ib??ez, 50
|
36 |
* 46010 VALENCIA
|
37 |
* SPAIN
|
38 |
*
|
39 |
* +34 963862235
|
40 |
* gvsig@gva.es
|
41 |
* www.gvsig.gva.es
|
42 |
*
|
43 |
* or
|
44 |
*
|
45 |
* IVER T.I. S.A
|
46 |
* Salamanca 50
|
47 |
* 46005 Valencia
|
48 |
* Spain
|
49 |
*
|
50 |
* +34 963163400
|
51 |
* dac@iver.es
|
52 |
*/
|
53 |
/* CVS MESSAGES:
|
54 |
*
|
55 |
* $Id: GPEXmlParser.java 11165 2007-04-12 11:47:15Z jorpiell $
|
56 |
* $Log$
|
57 |
* Revision 1.2 2007-04-12 11:47:15 jorpiell
|
58 |
* Add a getParser method
|
59 |
*
|
60 |
* Revision 1.1 2007/04/12 10:23:41 jorpiell
|
61 |
* Add some writers and the GPEXml parser
|
62 |
*
|
63 |
*
|
64 |
*/
|
65 |
/**
|
66 |
* This class can be implemented by all the classes that
|
67 |
* implements a GPE driver based on the XML format.
|
68 |
* @author Jorge Piera LLodr? (jorge.piera@iver.es)
|
69 |
*/
|
70 |
public abstract class GPEXmlParser extends GPEParser { |
71 |
private InputStream inputStream = null; |
72 |
private XmlPullParser parser = null; |
73 |
|
74 |
public GPEXmlParser(GPEContentHandler contents, GPEErrorHandler errors) {
|
75 |
super(contents, errors);
|
76 |
} |
77 |
|
78 |
/*
|
79 |
* (non-Javadoc)
|
80 |
* @see org.gvsig.gpe.GPEParser#parse(java.io.File)
|
81 |
*/
|
82 |
public void parse(File file) throws Exception{ |
83 |
inputStream = createInputStream(file); |
84 |
parser = GPEXmlParserFactory.getParser(); |
85 |
parser.setInput(getInputStream(), getEncoding()); |
86 |
initParse(); |
87 |
} |
88 |
|
89 |
/**
|
90 |
* Creates an input stream from a file.
|
91 |
* @param file
|
92 |
* @return
|
93 |
* @throws FileNotFoundException
|
94 |
*/
|
95 |
protected abstract InputStream createInputStream(File file) throws FileNotFoundException; |
96 |
|
97 |
/**
|
98 |
* This method start the parse process. It is called
|
99 |
* before the XML parser is initialized
|
100 |
*/
|
101 |
protected abstract void initParse(); |
102 |
|
103 |
/**
|
104 |
* @return Returns the encoding.
|
105 |
* @throws IOException
|
106 |
* @throws KmlException
|
107 |
*/
|
108 |
private String getEncoding() throws IOException { |
109 |
String encoding = "UTF-8"; |
110 |
InputStream is = getInputStream();
|
111 |
int index = -1; |
112 |
int endIndex = -1; |
113 |
String header = ""; |
114 |
boolean endHeader = false; |
115 |
|
116 |
int i = 1; |
117 |
while((!endHeader) && (i < 100)){ |
118 |
byte[] buffer = new byte[1]; |
119 |
is.read(buffer); |
120 |
header = header + new String(buffer); |
121 |
//This if is to locate the encoding string
|
122 |
if (index == -1) { |
123 |
String searchText = "encoding=\""; |
124 |
index = header.indexOf(searchText); |
125 |
if (index > -1){ |
126 |
header = "";
|
127 |
} |
128 |
} |
129 |
//This if is to locate the encoding value
|
130 |
if (index > -1){ |
131 |
String searchText = "\""; |
132 |
endIndex = header.indexOf(searchText); |
133 |
if (endIndex > -1){ |
134 |
encoding = header.substring(0, endIndex);
|
135 |
} |
136 |
} |
137 |
//To finish to parse the header
|
138 |
if (endIndex > -1){ |
139 |
String searchText = ">"; |
140 |
int headerEndIndex = header.indexOf(searchText);
|
141 |
if (headerEndIndex > -1){ |
142 |
endHeader = true;
|
143 |
} |
144 |
} |
145 |
i++; |
146 |
} |
147 |
return encoding;
|
148 |
} |
149 |
|
150 |
/**
|
151 |
* @return the inputStream
|
152 |
*/
|
153 |
private InputStream getInputStream() { |
154 |
return inputStream;
|
155 |
} |
156 |
|
157 |
/**
|
158 |
* @return the parser
|
159 |
*/
|
160 |
protected XmlPullParser getParser() {
|
161 |
return parser;
|
162 |
} |
163 |
|
164 |
} |