Audinaut-subsonic-app-android/app/src/main/java/net/nullsum/audinaut/service/parser/AbstractParser.java

138 lines
4.0 KiB
Java

/*
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 net.nullsum.audinaut.service.parser;
import android.content.Context;
import android.util.Log;
import android.util.Xml;
import net.nullsum.audinaut.R;
import net.nullsum.audinaut.util.ProgressListener;
import net.nullsum.audinaut.util.Util;
import org.xmlpull.v1.XmlPullParser;
import java.io.IOException;
import java.io.InputStream;
/**
* @author Sindre Mehus
*/
abstract class AbstractParser {
private static final String TAG = AbstractParser.class.getSimpleName();
private static final String SUBSONIC_RESPONSE = "subsonic-response";
final Context context;
private final int instance;
private XmlPullParser parser;
private boolean rootElementFound;
AbstractParser(Context context, int instance) {
this.context = context;
this.instance = instance;
}
Context getContext() {
return context;
}
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);
// 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(message);
}
void updateProgress(ProgressListener progressListener, String message) {
if (progressListener != null) {
progressListener.updateProgress(message);
}
}
String getText() {
return parser.getText();
}
String get(String name) {
return parser.getAttributeValue(null, name);
}
boolean getBoolean() {
return "true".equals(get("isDir"));
}
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;
}
}
void init(InputStream inputStream) throws Exception {
parser = Xml.newPullParser();
parser.setInput(inputStream, "UTF-8");
rootElementFound = false;
}
int nextParseEvent() throws Exception {
return parser.next();
}
String getElementName() {
String name = parser.getName();
if (SUBSONIC_RESPONSE.equals(name)) {
rootElementFound = true;
}
return name;
}
void validate() throws Exception {
if (!rootElementFound) {
throw new Exception(context.getResources().getString(R.string.background_task_parse_error));
}
}
}