2014-03-20 14:35:38 +01:00
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/**
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*
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* Copyright 2014 Florian Schmaus
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack.util;
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2014-03-21 09:51:52 +01:00
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import org.jivesoftware.smack.packet.PacketExtension;
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2014-03-20 14:35:38 +01:00
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public class XmlStringBuilder implements Appendable, CharSequence {
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2014-03-21 09:51:52 +01:00
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public static final String RIGHT_ANGEL_BRACKET = Character.toString('>');
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2014-03-20 14:35:38 +01:00
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2014-03-21 09:51:52 +01:00
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private final LazyStringBuilder sb;
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2014-03-20 14:35:38 +01:00
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public XmlStringBuilder() {
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2014-03-21 09:51:52 +01:00
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sb = new LazyStringBuilder();
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}
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public XmlStringBuilder(PacketExtension pe) {
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this();
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prelude(pe);
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2014-03-20 14:35:38 +01:00
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}
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/**
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* Does nothing if content is null.
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*
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* @param name
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* @param content
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2014-03-21 09:51:52 +01:00
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* @return the XmlStringBuilder
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2014-03-20 14:35:38 +01:00
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*/
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public XmlStringBuilder element(String name, String content) {
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2014-03-21 09:51:52 +01:00
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assert content != null;
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2014-03-20 14:35:38 +01:00
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openElement(name);
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escape(content);
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closeElement(name);
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return this;
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}
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public XmlStringBuilder element(String name, Enum<?> content) {
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2014-03-21 09:51:52 +01:00
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assert content != null;
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element(name, content.name());
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return this;
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}
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public XmlStringBuilder optElement(String name, String content) {
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if (content != null) {
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element(name, content);
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}
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return this;
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}
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public XmlStringBuilder optElement(String name, Enum<?> content) {
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2014-03-20 14:35:38 +01:00
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if (content != null) {
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2014-03-21 09:51:52 +01:00
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element(name, content);
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2014-03-20 14:35:38 +01:00
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}
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return this;
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}
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public XmlStringBuilder halfOpenElement(String name) {
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sb.append('<').append(name);
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return this;
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}
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public XmlStringBuilder openElement(String name) {
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2014-03-21 09:51:52 +01:00
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halfOpenElement(name).rightAngelBracket();
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2014-03-20 14:35:38 +01:00
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return this;
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}
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public XmlStringBuilder closeElement(String name) {
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2014-03-21 09:51:52 +01:00
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sb.append("</").append(name);
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rightAngelBracket();
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2014-03-20 14:35:38 +01:00
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return this;
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}
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2014-03-21 09:51:52 +01:00
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public XmlStringBuilder closeElement(PacketExtension pe) {
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closeElement(pe.getElementName());
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return this;
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}
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public XmlStringBuilder closeEmptyElement() {
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2014-03-20 14:35:38 +01:00
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sb.append("/>");
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return this;
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}
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2014-03-21 09:51:52 +01:00
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public XmlStringBuilder rightAngelBracket() {
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sb.append(RIGHT_ANGEL_BRACKET);
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return this;
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}
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2014-03-20 14:35:38 +01:00
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/**
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* Does nothing if value is null.
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*
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* @param name
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* @param value
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2014-03-21 09:51:52 +01:00
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* @return the XmlStringBuilder
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2014-03-20 14:35:38 +01:00
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*/
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public XmlStringBuilder attribute(String name, String value) {
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2014-03-21 09:51:52 +01:00
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assert value != null;
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2014-03-20 14:35:38 +01:00
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sb.append(' ').append(name).append("='");
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escape(value);
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sb.append('\'');
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return this;
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}
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2014-03-21 09:51:52 +01:00
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public XmlStringBuilder attribute(String name, Enum<?> value) {
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assert value != null;
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attribute(name, value.name());
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return this;
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}
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public XmlStringBuilder optAttribute(String name, String value) {
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if (value != null) {
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attribute(name, value);
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}
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return this;
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}
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public XmlStringBuilder optAttribute(String name, Enum<?> value) {
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if (value != null) {
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attribute(name, value.name());
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}
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return this;
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}
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2014-03-20 14:35:38 +01:00
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public XmlStringBuilder xmlnsAttribute(String value) {
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2014-03-21 09:51:52 +01:00
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optAttribute("xmlns", value);
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2014-03-20 14:35:38 +01:00
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return this;
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}
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2014-03-21 09:51:52 +01:00
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public XmlStringBuilder xmllangAttribute(String value) {
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optAttribute("xml:lang", value);
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return this;
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}
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2014-03-20 14:35:38 +01:00
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public XmlStringBuilder escape(String text) {
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2014-03-21 09:51:52 +01:00
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assert text != null;
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2014-03-20 14:35:38 +01:00
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sb.append(StringUtils.escapeForXML(text));
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return this;
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}
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2014-03-21 09:51:52 +01:00
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public XmlStringBuilder prelude(PacketExtension pe) {
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halfOpenElement(pe.getElementName());
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xmlnsAttribute(pe.getNamespace());
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return this;
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}
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public XmlStringBuilder optAppend(CharSequence csq) {
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if (csq != null) {
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append(csq);
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}
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return this;
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}
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public XmlStringBuilder append(XmlStringBuilder xsb) {
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assert xsb != null;
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sb.append(xsb.sb);
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return this;
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}
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2014-03-20 14:35:38 +01:00
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@Override
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public XmlStringBuilder append(CharSequence csq) {
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2014-03-21 09:51:52 +01:00
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assert csq != null;
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2014-03-20 14:35:38 +01:00
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sb.append(csq);
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return this;
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}
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@Override
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public XmlStringBuilder append(CharSequence csq, int start, int end) {
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2014-03-21 09:51:52 +01:00
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assert csq != null;
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2014-03-20 14:35:38 +01:00
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sb.append(csq, start, end);
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return this;
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}
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@Override
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public XmlStringBuilder append(char c) {
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sb.append(c);
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return this;
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}
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@Override
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public int length() {
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return sb.length();
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}
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@Override
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public char charAt(int index) {
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return sb.charAt(index);
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}
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@Override
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public CharSequence subSequence(int start, int end) {
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return sb.subSequence(start, end);
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}
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@Override
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public String toString() {
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return sb.toString();
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}
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}
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