/*
* Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.xml.internal.stream.buffer;
import org.xml.sax.Attributes;
/**
* Class for holding attributes.
*
* Since it implements {@link Attributes}, this class follows the SAX convention
* of using "" instead of null.
*/
@SuppressWarnings({"PointlessArithmeticExpression"})
public final class AttributesHolder implements Attributes {
protected static final int DEFAULT_CAPACITY = 8;
protected static final int ITEM_SIZE = 1 << 3;
protected static final int PREFIX = 0;
protected static final int URI = 1;
protected static final int LOCAL_NAME = 2;
protected static final int QNAME = 3;
protected static final int TYPE = 4;
protected static final int VALUE = 5;
protected int _attributeCount;
protected String[] _strings;
public AttributesHolder() {
_strings = new String[DEFAULT_CAPACITY * ITEM_SIZE];
}
public final int getLength() {
return _attributeCount;
}
public final String getPrefix(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + PREFIX] : null;
}
public final String getLocalName(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + LOCAL_NAME] : null;
}
public final String getQName(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + QNAME] : null;
}
public final String getType(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + TYPE] : null;
}
public final String getURI(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + URI] : null;
}
public final String getValue(int index) {
return (index >= 0 && index < _attributeCount) ?
_strings[(index << 3) + VALUE] : null;
}
public final int getIndex(String qName) {
for (int i = 0; i < _attributeCount; i++) {
if (qName.equals(_strings[(i << 3) + QNAME])) {
return i;
}
}
return -1;
}
public final String getType(String qName) {
final int i = (getIndex(qName) << 3) + TYPE;
return (i >= 0) ? _strings[i] : null;
}
public final String getValue(String qName) {
final int i = (getIndex(qName) << 3) + VALUE;
return (i >= 0) ? _strings[i] : null;
}
public final int getIndex(String uri, String localName) {
for (int i = 0; i < _attributeCount; i++) {
if (localName.equals(_strings[(i << 3) + LOCAL_NAME]) &&
uri.equals(_strings[(i << 3) + URI])) {
return i;
}
}
return -1;
}
public final String getType(String uri, String localName) {
final int i = (getIndex(uri, localName) << 3) + TYPE;
return (i >= 0) ? _strings[i] : null;
}
public final String getValue(String uri, String localName) {
final int i = (getIndex(uri, localName) << 3) + VALUE;
return (i >= 0) ? _strings[i] : null;
}
public final void clear() {
if (_attributeCount > 0) {
for (int i = 0; i < _attributeCount; i++) {
_strings[(i << 3) + VALUE] = null;
}
_attributeCount = 0;
}
}
/**
* Add an attribute using a qualified name that contains the
* prefix and local name.
*
* @param uri
* This can be empty but not null, just like everywhere else in SAX.
*/
public final void addAttributeWithQName(String uri, String localName, String qName, String type, String value) {
final int i = _attributeCount << 3;
if (i == _strings.length) {
resize(i);
}
_strings[i + PREFIX] = null;
_strings[i + URI] = uri;
_strings[i + LOCAL_NAME] = localName;
_strings[i + QNAME] = qName;
_strings[i + TYPE] = type;
_strings[i + VALUE] = value;
_attributeCount++;
}
/**
* Add an attribute using a prefix.
*
* @param prefix
* This can be empty but not null, just like everywhere else in SAX.
* @param uri
* This can be empty but not null, just like everywhere else in SAX.
*/
public final void addAttributeWithPrefix(String prefix, String uri, String localName, String type, String value) {
final int i = _attributeCount << 3;
if (i == _strings.length) {
resize(i);
}
_strings[i + PREFIX] = prefix;
_strings[i + URI] = uri;
_strings[i + LOCAL_NAME] = localName;
_strings[i + QNAME] = null;
_strings[i + TYPE] = type;
_strings[i + VALUE] = value;
_attributeCount++;
}
private void resize(int length) {
final int newLength = length * 2;
final String[] strings = new String[newLength];
System.arraycopy(_strings, 0, strings, 0, length);
_strings = strings;
}
}