gecko-dev/grendel/mime/extractor/MimeExtractorOperatorFactor...

74 строки
2.2 KiB
Java

/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (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 Grendel mail/news client.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are Copyright (C) 1997
* Netscape Communications Corporation. All Rights Reserved.
*
* Created: Jamie Zawinski <jwz@netscape.com>, 2 Sep 1997.
*/
package grendel.mime.extractor;
import calypso.util.ByteBuf;
import grendel.mime.IMimeOperator;
import grendel.mime.IMimeObject;
/** Creates an IMimeOperator to extract the raw data of a MIME sub-part.
The ID is of the form used by IMimeObject.partID() -- it is a string
listing the index of the part in the MIME tree, like "1.2.5".
*/
public class MimeExtractorOperatorFactory {
public static IMimeOperator Make(IMimeObject root_object, String target_id) {
return new MimeExtractorOperator(root_object, target_id);
}
}
/** This class extracts a particular MIME part, by number.
*/
class MimeExtractorOperator implements IMimeOperator {
String target_id = null;
boolean this_one = false;
boolean done = false;
MimeExtractorOperator(IMimeObject object, String target_id) {
this.target_id = target_id;
if (!done) {
String id = object.partID();
if (id == target_id ||
(id != null && target_id != null &&
id.equalsIgnoreCase(target_id)))
this_one = true;
}
}
public IMimeOperator createChild(IMimeObject child_object) {
return new MimeExtractorOperator(child_object, target_id);
}
public void pushBytes(ByteBuf b) {
if (this_one) {
System.out.print(b.toString());
}
}
public void pushEOF() {
if (this_one)
done = true;
}
}