/**
* @author : Paul Taylor
*
* Version @version:$Id: XMLTagDisplayFormatter.java 836 2009-11-12 15:44:07Z paultaylor $
*
* MusicTag Copyright (C)2003,2004
*
* This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation; either version 2.1 of the License,
* or (at your option) any later version.
*
* This library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this library; if not,
* you can get a copy from http://www.opensource.org/licenses/lgpl-license.php or write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package org.jaudiotagger.logging;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;
/*
* For Formatting the metadata contents of a file in an XML format
*
* This could provide the basis of a representation of a files metadata, which can then be manipulated to
* to create technical reports.
*/
public class XMLTagDisplayFormatter extends AbstractTagDisplayFormatter {
private static XMLTagDisplayFormatter formatter;
protected static final String xmlOpenStart = "<";
protected static final String xmlOpenEnd = ">";
protected static final String xmlCloseStart = "</";
protected static final String xmlCloseEnd = ">";
protected static final String xmlSingleTagClose = " />";
protected static final String xmlCDataTagOpen = "<![CDATA[";
protected static final String xmlCDataTagClose = "]]>";
StringBuffer sb = new StringBuffer();
public XMLTagDisplayFormatter() {
}
/**
* Return xml open tag round a string e.g <tag>
*
* @param xmlName
* @return
*/
public static String xmlOpen(String xmlName) {
return xmlOpenStart + xmlName + xmlOpenEnd;
}
public static String xmlOpenHeading(String name, String data) {
return (xmlOpen(name + " id=\"" + data + "\""));
}
/**
* Return CDATA tag around xml data e.g <![CDATA[xmlData]]>
* We also need to deal with special chars
*
* @param xmlData
* @return
*/
public static String xmlCData(String xmlData) {
char tempChar;
StringBuffer replacedString = new StringBuffer();
for (int i = 0; i < xmlData.length(); i++) {
tempChar = xmlData.charAt(i);
if ((Character.isLetterOrDigit(tempChar)) || (Character.isSpaceChar(tempChar))) {
replacedString.append(tempChar);
} else {
replacedString.append("#x").append(Character.digit(tempChar, 16));
}
}
return xmlCDataTagOpen + replacedString + xmlCDataTagClose;
}
/**
* Return xml close tag around a string e.g </tag>
*
* @param xmlName
* @return
*/
public static String xmlClose(String xmlName) {
return xmlCloseStart + xmlName + xmlCloseEnd;
}
public static String xmlSingleTag(String data) {
return xmlOpenStart + data + xmlSingleTagClose;
}
public static String xmlFullTag(String xmlName, String data) {
return xmlOpen(xmlName) + xmlCData(data) + xmlClose(xmlName);
}
public void openHeadingElement(String type, String value) {
if (value.length() == 0) {
sb.append(xmlOpen(type));
} else {
sb.append(xmlOpenHeading(type, replaceXMLCharacters(value)));
}
}
public void openHeadingElement(String type, boolean value) {
openHeadingElement(type, String.valueOf(value));
}
public void openHeadingElement(String type, int value) {
openHeadingElement(type, String.valueOf(value));
}
public void closeHeadingElement(String type) {
sb.append(xmlClose(type));
}
public void addElement(String type, String value) {
sb.append(xmlFullTag(type, replaceXMLCharacters(value)));
}
public void addElement(String type, int value) {
addElement(type, String.valueOf(value));
}
public void addElement(String type, boolean value) {
addElement(type, String.valueOf(value));
}
public String toString() {
return sb.toString();
}
/**
* Replace any special xml characters with the appropiate escape sequences
* required to be done for the actual element names
*
* @param xmlData
* @return
*/
public static String replaceXMLCharacters(String xmlData) {
StringBuffer sb = new StringBuffer();
StringCharacterIterator sCI = new StringCharacterIterator(xmlData);
for (char c = sCI.first(); c != CharacterIterator.DONE; c = sCI.next()) {
switch (c) {
case '&':
sb.append("&");
break;
case '<':
sb.append("<");
break;
case '>':
sb.append(">");
break;
case '"':
sb.append(""");
break;
case '\'':
sb.append("'");
break;
default:
sb.append(c);
}
}
return sb.toString();
}
}