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/*
This file is part of Subsonic.
Subsonic is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Subsonic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
Copyright 2009 (C) Sindre Mehus
*/
package github.daneren2005.dsub.service.parser;
import java.io.IOException;
import java.io.Reader;
import org.xmlpull.v1.XmlPullParser;
import android.content.Context;
import android.util.Log;
import android.util.Xml;
import github.daneren2005.dsub.R;
import github.daneren2005.dsub.domain.ServerInfo;
import github.daneren2005.dsub.domain.Version;
import github.daneren2005.dsub.util.ProgressListener;
import github.daneren2005.dsub.util.Util;
/**
* @author Sindre Mehus
*/
public abstract class AbstractParser {
private static final String TAG = AbstractParser.class.getSimpleName();
private static final String SUBSONIC_RESPONSE = "subsonic-response";
private static final String MADSONIC_RESPONSE = "madsonic-response";
private static final String SUBSONIC = "subsonic";
private static final String MADSONIC = "madsonic";
private static final String AMPACHE = "ampache";
protected final Context context;
protected final int instance;
private XmlPullParser parser;
private boolean rootElementFound;
public AbstractParser(Context context, int instance) {
this.context = context;
this.instance = instance;
}
protected Context getContext() {
return context;
}
protected void handleError() throws Exception {
int code = getInteger("code");
String message;
switch (code) {
case 0:
message = context.getResources().getString(R.string.parser_server_error, get("message"));
break;
case 20:
message = context.getResources().getString(R.string.parser_upgrade_client);
break;
case 30:
message = context.getResources().getString(R.string.parser_upgrade_server);
break;
case 40:
message = context.getResources().getString(R.string.parser_not_authenticated);
break;
case 41:
Util.setBlockTokenUse(context, instance, true);
// Throw IOException so RESTMusicService knows to retry
throw new IOException();
case 50:
message = context.getResources().getString(R.string.parser_not_authorized);
break;
default:
message = get("message");
break;
}
throw new SubsonicRESTException(code, message);
}
protected void updateProgress(ProgressListener progressListener, int messageId) {
if (progressListener != null) {
progressListener.updateProgress(messageId);
}
}
protected void updateProgress(ProgressListener progressListener, String message) {
if (progressListener != null) {
progressListener.updateProgress(message);
}
}
protected String getText() {
return parser.getText();
}
protected String get(String name) {
return parser.getAttributeValue(null, name);
}
protected boolean getBoolean(String name) {
return "true".equals(get(name));
}
protected Integer getInteger(String name) {
String s = get(name);
try {
return (s == null || "".equals(s)) ? null : Integer.valueOf(s);
} catch(Exception e) {
Log.w(TAG, "Failed to parse " + s + " into integer");
return null;
}
}
protected Long getLong(String name) {
String s = get(name);
return s == null ? null : Long.valueOf(s);
}
protected Float getFloat(String name) {
String s = get(name);
return s == null ? null : Float.valueOf(s);
}
protected void init(Reader reader) throws Exception {
parser = Xml.newPullParser();
parser.setInput(reader);
rootElementFound = false;
}
protected int nextParseEvent() throws Exception {
try {
return parser.next();
} catch(Exception e) {
if(ServerInfo.isMadsonic6(context, instance)) {
ServerInfo overrideInfo = new ServerInfo();
overrideInfo.saveServerInfo(context, instance);
}
throw e;
}
}
protected String getElementName() {
String name = parser.getName();
if (SUBSONIC_RESPONSE.equals(name) || MADSONIC_RESPONSE.equals(name)) {
rootElementFound = true;
String version = get("version");
if (version != null) {
ServerInfo server = new ServerInfo();
server.setRestVersion(new Version(version));
if(MADSONIC.equals(get("type")) || MADSONIC_RESPONSE.equals(name)) {
server.setRestType(ServerInfo.TYPE_MADSONIC);
} if(AMPACHE.equals(get("type"))) {
server.setRestType(ServerInfo.TYPE_AMPACHE);
} else if(SUBSONIC.equals(get("type")) && server.checkServerVersion(context, "1.13")) {
// Oh am I going to regret this
server.setRestType(ServerInfo.TYPE_MADSONIC);
server.setRestVersion(new Version("2.0.0"));
}
server.saveServerInfo(context, instance);
}
}
return name;
}
protected void validate() throws Exception {
if (!rootElementFound) {
if(ServerInfo.isMadsonic6(context, instance)) {
ServerInfo overrideInfo = new ServerInfo();
overrideInfo.saveServerInfo(context, instance);
}
throw new Exception(context.getResources().getString(R.string.background_task_parse_error));
}
}
}
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