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package eu.siacs.conversations.xml;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.util.Log;
import android.util.Xml;
public class XmlReader {
private static final String LOGTAG = "xmppService";
private XmlPullParser parser;
private PowerManager.WakeLock wakeLock;
private InputStream is;
public XmlReader(WakeLock wakeLock) {
this.parser = Xml.newPullParser();
try {
this.parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES,true);
} catch (XmlPullParserException e) {
Log.d(LOGTAG,"error setting namespace feature on parser");
}
this.wakeLock = wakeLock;
}
public void setInputStream(InputStream inputStream) throws IOException {
if (inputStream==null) {
throw new IOException();
}
this.is = inputStream;
try {
parser.setInput(new InputStreamReader(this.is));
} catch (XmlPullParserException e) {
throw new IOException("error resetting parser");
}
}
public InputStream getInputStream() throws IOException {
if (this.is==null) {
throw new IOException();
}
return is;
}
public void reset() throws IOException {
if (this.is==null) {
throw new IOException();
}
try {
parser.setInput(new InputStreamReader(this.is));
} catch (XmlPullParserException e) {
throw new IOException("error resetting parser");
}
}
public Tag readTag() throws XmlPullParserException, IOException {
if (wakeLock.isHeld()) {
try { wakeLock.release();} catch (RuntimeException re) {}
}
try {
while(this.is != null && parser.next() != XmlPullParser.END_DOCUMENT) {
wakeLock.acquire();
if (parser.getEventType() == XmlPullParser.START_TAG) {
Tag tag = Tag.start(parser.getName());
for(int i = 0; i < parser.getAttributeCount(); ++i) {
tag.setAttribute(parser.getAttributeName(i), parser.getAttributeValue(i));
}
String xmlns = parser.getNamespace();
if (xmlns!=null) {
tag.setAttribute("xmlns",xmlns);
}
return tag;
} else if (parser.getEventType() == XmlPullParser.END_TAG) {
Tag tag = Tag.end(parser.getName());
return tag;
} else if (parser.getEventType() == XmlPullParser.TEXT) {
Tag tag = Tag.no(parser.getText());
return tag;
}
}
if (wakeLock.isHeld()) {
try { wakeLock.release();} catch (RuntimeException re) {}
}
} catch (ArrayIndexOutOfBoundsException e) {
throw new IOException("xml parser mishandled ArrayIndexOufOfBounds", e);
} catch (StringIndexOutOfBoundsException e) {
throw new IOException("xml parser mishandled StringIndexOufOfBounds", e);
} catch (NullPointerException e) {
throw new IOException("xml parser mishandled NullPointerException", e);
} catch (IndexOutOfBoundsException e) {
throw new IOException("xml parser mishandled IndexOutOfBound", e);
}
return null;
}
public Element readElement(Tag currentTag) throws XmlPullParserException, IOException {
Element element = new Element(currentTag.getName());
element.setAttributes(currentTag.getAttributes());
Tag nextTag = this.readTag();
if (nextTag == null) {
throw new IOException("unterupted mid tag");
}
if(nextTag.isNo()) {
element.setContent(nextTag.getName());
nextTag = this.readTag();
if (nextTag == null) {
throw new IOException("unterupted mid tag");
}
}
while(!nextTag.isEnd(element.getName())) {
if (!nextTag.isNo()) {
Element child = this.readElement(nextTag);
element.addChild(child);
}
nextTag = this.readTag();
if (nextTag == null) {
throw new IOException("unterupted mid tag");
}
}
return element;
}
}
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