ultrasonic-app-subsonic-and.../ultrasonic/src/main/java/com/thejoshwa/ultrasonic/androidapp/service/parser/GenreParser.java

155 lines
3.6 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 2010 (C) Sindre Mehus
*/
package com.thejoshwa.ultrasonic.androidapp.service.parser;
import android.content.Context;
import android.util.Log;
import com.thejoshwa.ultrasonic.androidapp.R;
import com.thejoshwa.ultrasonic.androidapp.domain.Genre;
import com.thejoshwa.ultrasonic.androidapp.util.ProgressListener;
import org.xmlpull.v1.XmlPullParser;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
/**
* @author Joshua Bahnsen
*/
public class GenreParser extends AbstractParser
{
private static final String TAG = GenreParser.class.getSimpleName();
private static final Pattern COMPILE = Pattern.compile("(?:&amp;)(amp;|lt;|gt;|#37;|apos;)");
private static final Pattern PATTERN = Pattern.compile("&(?!amp;|lt;|gt;|#37;|apos;)");
private static final Pattern COMPILE1 = Pattern.compile("%");
private static final Pattern COMPILE2 = Pattern.compile("'");
public GenreParser(Context context)
{
super(context);
}
public List<Genre> parse(Reader reader, ProgressListener progressListener) throws Exception
{
updateProgress(progressListener, R.string.parser_reading);
List<Genre> result = new ArrayList<Genre>();
StringReader sr = null;
try
{
BufferedReader br = new BufferedReader(reader);
String xml = null;
String line;
while ((line = br.readLine()) != null)
{
if (xml == null)
{
xml = line;
}
else
{
xml += line;
}
}
br.close();
// Replace possible unescaped XML characters
// No replacements for <> at this time
if (xml != null)
{
// Replace double escaped ampersand (&amp;apos;)
xml = COMPILE.matcher(xml).replaceAll("&$1");
// Replace unescaped ampersand
xml = PATTERN.matcher(xml).replaceAll("&amp;");
// Replace unescaped percent symbol
xml = COMPILE1.matcher(xml).replaceAll("&#37;");
// Replace unescaped apostrophe
xml = COMPILE2.matcher(xml).replaceAll("&apos;");
}
sr = new StringReader(xml);
}
catch (IOException ioe)
{
Log.e(TAG, "Error parsing Genre XML", ioe);
}
if (sr == null)
{
Log.w(TAG, "Unable to parse Genre XML, returning empty list");
return result;
}
init(sr);
Genre genre = null;
int eventType;
do
{
eventType = nextParseEvent();
if (eventType == XmlPullParser.START_TAG)
{
String name = getElementName();
if ("genre".equals(name))
{
genre = new Genre();
}
else if ("error".equals(name))
{
handleError();
}
else
{
genre = null;
}
}
else if (eventType == XmlPullParser.TEXT)
{
if (genre != null)
{
String value = getText();
genre.setName(value);
genre.setIndex(value.substring(0, 1));
result.add(genre);
genre = null;
}
}
} while (eventType != XmlPullParser.END_DOCUMENT);
validate();
updateProgress(progressListener, R.string.parser_reading_done);
return result;
}
}