1 /*
2  * Copyright (C) 2011 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.cts.tradefed.result;
18 
19 import com.android.tradefed.util.xml.AbstractXmlParser.ParseException;
20 
21 import org.xmlpull.v1.XmlPullParser;
22 import org.xmlpull.v1.XmlPullParserException;
23 import org.xmlpull.v1.XmlPullParserFactory;
24 
25 import java.io.IOException;
26 import java.io.Reader;
27 
28 /**
29  * Helper abstract class for XmlPullParser
30  *
31  * TODO: move to com.android.tradefed.util.xml
32  */
33 public abstract class AbstractXmlPullParser {
34 
35     /**
36      * Parse the summary data from the given input data.
37      *
38      * @param xmlReader the input XML
39      * @throws ParseException if failed to parse the summary data.
40      */
parse(Reader xmlReader)41     public void parse(Reader xmlReader) throws ParseException {
42         try {
43             XmlPullParserFactory fact = org.xmlpull.v1.XmlPullParserFactory.newInstance();
44             XmlPullParser parser = fact.newPullParser();
45             parser.setInput (xmlReader);
46             parse(parser);
47         } catch (XmlPullParserException e) {
48            throw new ParseException(e);
49         } catch (IOException e) {
50             throw new ParseException(e);
51         }
52     }
53 
parse(XmlPullParser parser)54     abstract void parse(XmlPullParser parser) throws XmlPullParserException, IOException;
55 
56     /**
57      * Parse an integer value from an XML attribute
58      *
59      * @param parser the {@link XmlPullParser}
60      * @param name the attribute name
61      * @return the parsed value or 0 if it could not be parsed
62      */
parseIntAttr(XmlPullParser parser, String name)63     protected int parseIntAttr(XmlPullParser parser, String name) {
64         try {
65             String value = parser.getAttributeValue(null, name);
66             if (value != null) {
67                 return Integer.parseInt(value);
68             }
69         } catch (NumberFormatException e) {
70             // ignore
71         }
72         return 0;
73     }
74 
75     /**
76      * Parse a boolean attribute value
77      */
parseBooleanAttr(XmlPullParser parser, String name)78     protected boolean parseBooleanAttr(XmlPullParser parser, String name) {
79         String stringValue = parser.getAttributeValue(null, name);
80         return stringValue != null &&
81                 Boolean.parseBoolean(stringValue);
82     }
83 
84     /**
85      * Helper method for retrieving attribute value with given name
86      *
87      * @param parser the XmlPullParser
88      * @param name the attribute name
89      * @return the attribute value
90      */
getAttribute(XmlPullParser parser, String name)91     protected String getAttribute(XmlPullParser parser, String name) {
92         return parser.getAttributeValue(null, name);
93     }
94 }
95