/*
* Copyright (C) 2007-2011 Geometer Plus <contact@geometerplus.com>
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.geometerplus.fbreader.formats.fb2;
import org.geometerplus.zlibrary.core.filesystem.ZLFile;
import org.geometerplus.zlibrary.core.xml.*;
public class FB2AnnotationReader extends ZLXMLReaderAdapter {
private final static int READ_NOTHING = 0;
private final static int READ_ANNOTATION = 1;
private int myReadState = READ_NOTHING;
private final StringBuilder myBuffer = new StringBuilder();
public FB2AnnotationReader() {
}
public boolean dontCacheAttributeValues() {
return true;
}
public String readAnnotation(ZLFile file) {
myReadState = READ_NOTHING;
myBuffer.delete(0, myBuffer.length());
if (readDocument(file)) {
final int len = myBuffer.length();
if (len > 1) {
if (myBuffer.charAt(len - 1) == '\n') {
myBuffer.delete(len - 1, len);
}
return myBuffer.toString();
}
}
return null;
}
public boolean startElementHandler(String tagName, ZLStringMap attributes) {
switch (FB2Tag.getTagByName(tagName)) {
case FB2Tag.BODY:
return true;
case FB2Tag.ANNOTATION:
myReadState = READ_ANNOTATION;
break;
default:
if (myReadState == READ_ANNOTATION) {
// TODO: add tag to buffer
myBuffer.append(" ");
}
break;
}
return false;
}
public boolean endElementHandler(String tag) {
if (myReadState != READ_ANNOTATION) {
return false;
}
switch (FB2Tag.getTagByName(tag)) {
case FB2Tag.ANNOTATION:
return true;
case FB2Tag.P:
myBuffer.append("\n");
break;
default:
// TODO: add tag to buffer
myBuffer.append(" ");
break;
}
return false;
}
public void characterDataHandler(char[] data, int start, int length) {
if (myReadState == READ_ANNOTATION) {
myBuffer.append(new String(data, start, length).trim());
}
}
public boolean readDocument(ZLFile file) {
return ZLXMLProcessor.read(this, file, 512);
}
}