info.monitorenter.cpdetector.io.AbstractCodepageDetector Maven / Gradle / Ivy
/*
*
* AbstractCharsetdetector.java, provides the default implementation
* for the high-level codepage detection method of interface ICodepageProcessor.
*
* Copyright (C) Achim Westermann, created on 19.07.2004, 21:45:47
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this collection are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the cpDetector code in [sub] packages info.monitorenter and
* cpdetector.
*
* The Initial Developer of the Original Code is
* Achim Westermann .
*
* Portions created by the Initial Developer are Copyright (c) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** *
*
* If you modify or optimize the code in a useful way please let me know.
* [email protected]
*
*/
package info.monitorenter.cpdetector.io;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.nio.charset.Charset;
/**
*
* This implementation provides the default implementation for the high-level codepage detection method
* {@link #open(java.net.URL)}of the implemented interface ICodepageProcessor.
*
*
* Also the Comparable interface implementation is provided here by comparing the class-name strings of the
* implementations.
*
*
* @author Achim Westermann
*
*/
public abstract class AbstractCodepageDetector implements ICodepageDetector {
/**
*
*/
public AbstractCodepageDetector() {
super();
}
/**
* Delegates to {@link #detectCodepage(java.io.InputStream, int)} with a buffered input stream.
*
*
* @see info.monitorenter.cpdetector.io.ICodepageDetector#detectCodepage(java.net.URL)
*/
public Charset detectCodepage(final URL url) throws IOException {
Charset result;
BufferedInputStream in = new BufferedInputStream(url.openStream());
result = this.detectCodepage(in, Integer.MAX_VALUE);
in.close();
return result;
}
/**
* A default delegation to {@link #detectCodepage(java.net.URL)}that opens the document specified by the given URL with the
* detected codepage.
*
*
* @see ICodepageDetector#open(java.net.URL)
*/
public final Reader open(final URL url) throws IOException {
Reader ret = null;
Charset cs = this.detectCodepage(url);
if (cs != null) {
ret = new InputStreamReader(new BufferedInputStream(url.openStream()), cs);
}
return ret;
}
/**
* @see Comparable#compareTo(Object)
*/
public int compareTo(final Object o) {
String other = o.getClass().getName();
String mine = this.getClass().getName();
return mine.compareTo(other);
}
}