protected PlexusConfiguration createConfiguration(String threshold) {
DefaultPlexusConfiguration config = new DefaultPlexusConfiguration("logging");
DefaultPlexusConfiguration loggerNode = new DefaultPlexusConfiguration("logger");
config.addChild(loggerNode);
DefaultPlexusConfiguration thresholdNode = new DefaultPlexusConfiguration("threshold");
loggerNode.addChild(thresholdNode);
thresholdNode.setValue(threshold);
return config;
}
/**
* @param reader
* @return
* @throws java.lang.Exception
*/
public PlexusConfiguration parse(Reader reader) throws Exception {
List elements = new ArrayList();
List values = new ArrayList();
PlexusConfiguration configuration = null;
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser parser = factory.newPullParser();
parser.setInput(reader);
int eventType = parser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if (eventType == XmlPullParser.START_TAG) {
String rawName = parser.getName();
DefaultPlexusConfiguration childConfiguration =
createConfiguration(rawName, getLocationString());
// depth of new childConfiguration (not decrementing here, childConfiguration
// is to be added)
int depth = elements.size();
if (depth > 0) {
DefaultPlexusConfiguration parent = (DefaultPlexusConfiguration) elements.get(depth - 1);
parent.addChild(childConfiguration);
}
elements.add(childConfiguration);
values.add(new StringBuffer());
int attributesSize = parser.getAttributeCount();
for (int i = 0; i < attributesSize; i++) {
String name = parser.getAttributeName(i);
String value = parser.getAttributeValue(i);
childConfiguration.setAttribute(name, value);
}
} else if (eventType == XmlPullParser.TEXT) {
// it is possible to play micro-optimization here by doing
// manual trimming and thus preserve some precious bits
// of memory, but it's really not important enough to justify
// resulting code complexity
int depth = values.size() - 1;
StringBuffer valueBuffer = (StringBuffer) values.get(depth);
valueBuffer.append(parser.getText());
} else if (eventType == XmlPullParser.END_TAG) {
int depth = elements.size() - 1;
DefaultPlexusConfiguration finishedConfiguration =
(DefaultPlexusConfiguration) elements.remove(depth);
String accumulatedValue = (values.remove(depth)).toString();
if (finishedConfiguration.getChildren().length == 0) {
// leaf node
String finishedValue;
if (0 == accumulatedValue.length()) {
finishedValue = null;
} else {
finishedValue = accumulatedValue.trim();
}
finishedConfiguration.setValue(finishedValue);
} else {
String trimmedValue = accumulatedValue.trim();
if (trimmedValue.length() > 0) {
throw new Exception(
"Not allowed to define mixed content in the "
+ "element "
+ finishedConfiguration.getName());
}
}
if (0 == depth) {
configuration = finishedConfiguration;
}
}
eventType = parser.next();
}
reader.close();
return configuration;
}
