net.java.dev.openim.tools.XMLToString.java Source code

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Here is the source code for net.java.dev.openim.tools.XMLToString.java

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/**
 * Copyright (c) 2008 Sonatype, Inc. All rights reserved.
 *
 * This program is licensed to you under the Apache License Version 2.0,
 * and you may not use this file except in compliance with the Apache License Version 2.0.
 * You may obtain a copy of the Apache License Version 2.0 at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the Apache License Version 2.0 is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Apache License Version 2.0 for the specific language governing permissions and limitations there under.
 */
package net.java.dev.openim.tools;

import org.apache.commons.lang.StringUtils;

/**
 * @author AlAg
 */
public class XMLToString {

    private String m_elementName;
    private StringBuffer m_buffer;
    private StringBuffer m_innerBuffer;

    public XMLToString(String elementName) {
        m_buffer = new StringBuffer();
        m_buffer.append('<').append(elementName);
        m_elementName = elementName;
    }

    public void addAttribut(String name, String value) {
        if (name != null && name.length() > 0 && value != null) {
            m_buffer.append(' ').append(name).append("='").append(value).append("'");
        }
    }

    public void addFilledAttribut(String name, String value) {
        if (name != null && name.length() > 0 && value != null && value.length() > 0) {
            m_buffer.append(' ').append(name).append("='").append(value).append("'");
        }
    }

    public void addTextNode(String text) {
        if (text != null && text.length() > 0) {
            if (m_innerBuffer == null) {
                m_innerBuffer = new StringBuffer();
            }
            m_innerBuffer.append(convert(text));
        }
    }

    public void addStringElement(String stringElement) {
        if (stringElement != null) {
            if (m_innerBuffer == null) {
                m_innerBuffer = new StringBuffer();
            }
            m_innerBuffer.append(stringElement);
        }
    }

    public void addElement(XMLToString xmlToString) {
        if (xmlToString != null) {
            if (m_innerBuffer == null) {
                m_innerBuffer = new StringBuffer();
            }
            m_innerBuffer.append(xmlToString.toStringBuffer());
        }
    }

    public String toString() {
        return toStringBuffer().toString();
    }

    public StringBuffer toStringBuffer() {
        StringBuffer buffer = new StringBuffer();
        if (m_innerBuffer != null) {
            buffer.append(m_buffer).append('>').append(m_innerBuffer).append("</").append(m_elementName)
                    .append('>');
        } else {
            buffer.append(m_buffer).append("/>");
        }
        return buffer;
    }

    // -----------------------------------------------------------------------
    // should be optimized...
    private static final String convert(String s) {
        s = StringUtils.replace(s, "&", "&amp;");
        s = StringUtils.replace(s, "<", "&lt;");
        s = StringUtils.replace(s, ">", "&gt;");
        return s;
    }

}