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978f692eb0
Also change StringUtils.escapeForXML() and Packet.toXML() to return CharSequence instead of String. XmlStringBuilder now has 'optX' methods. Remove XmlUtils in favor of XmlStringBuilder
90 lines
2.3 KiB
Java
90 lines
2.3 KiB
Java
/**
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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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import java.util.ArrayList;
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import java.util.List;
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public class LazyStringBuilder implements Appendable, CharSequence {
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private final List<CharSequence> list;
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public LazyStringBuilder() {
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list = new ArrayList<CharSequence>(20);
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}
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public LazyStringBuilder append(LazyStringBuilder lsb) {
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list.addAll(lsb.list);
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return this;
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}
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@Override
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public LazyStringBuilder append(CharSequence csq) {
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assert csq != null;
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list.add(csq);
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return this;
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}
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@Override
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public LazyStringBuilder append(CharSequence csq, int start, int end) {
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CharSequence subsequence = csq.subSequence(start, end);
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list.add(subsequence);
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return this;
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}
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@Override
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public LazyStringBuilder append(char c) {
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list.add(Character.toString(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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int length = 0;
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for (CharSequence csq : list) {
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length += csq.length();
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}
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return length;
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}
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@Override
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public char charAt(int index) {
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for (CharSequence csq : list) {
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if (index < csq.length()) {
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return csq.charAt(index);
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} else {
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index -= csq.length();
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}
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}
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throw new IndexOutOfBoundsException();
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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 toString().subSequence(start, end);
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder(length());
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for (CharSequence csq : list) {
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sb.append(csq);
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}
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return sb.toString();
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}
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}
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