/*******************************************************************************
* Copyright © 2004, 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*
*******************************************************************************/
package org.eclipse.edt.ide.core.internal.model;
import java.io.PrintWriter;
import java.io.Writer;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
class XMLWriter extends PrintWriter {
/* constants */
private static final String XML_VERSION= "<?xml version=\"1.0\" encoding=\"UTF-8\"?>"; //$NON-NLS-1$
private static void appendEscapedChar(StringBuffer buffer, char c) {
String replacement= getReplacement(c);
if (replacement != null) {
buffer.append('&');
buffer.append(replacement);
buffer.append(';');
} else {
buffer.append(c);
}
}
private static String getEscaped(String s) {
StringBuffer result= new StringBuffer(s.length() + 10);
for (int i= 0; i < s.length(); ++i)
appendEscapedChar(result, s.charAt(i));
return result.toString();
}
private static String getReplacement(char c) {
// Encode special XML characters into the equivalent character references.
// These five are defined by default for all XML documents.
switch (c) {
case '<' :
return "lt"; //$NON-NLS-1$
case '>' :
return "gt"; //$NON-NLS-1$
case '"' :
return "quot"; //$NON-NLS-1$
case '\'' :
return "apos"; //$NON-NLS-1$
case '&' :
return "amp"; //$NON-NLS-1$
}
return null;
}
private int tab;
public XMLWriter(Writer writer) {
super(writer);
tab= 0;
println(XML_VERSION);
}
public void endTag(String name, boolean insertTab) {
tab--;
printTag('/' + name, null, insertTab, true, false);
}
private void printTabulation() {
for (int i= 0; i < tab; i++)
super.print('\t');
}
public void printTag(String name, HashMap parameters, boolean insertTab, boolean insertNewLine, boolean closeTag) {
StringBuffer sb= new StringBuffer();
sb.append("<"); //$NON-NLS-1$
sb.append(name);
if (parameters != null) {
for (Enumeration enumx = Collections.enumeration(parameters.keySet()); enumx.hasMoreElements();) {
sb.append(" "); //$NON-NLS-1$
String key= (String) enumx.nextElement();
sb.append(key);
sb.append("=\""); //$NON-NLS-1$
sb.append(getEscaped(String.valueOf(parameters.get(key))));
sb.append("\""); //$NON-NLS-1$
}
}
if (closeTag) {
sb.append("/>"); //$NON-NLS-1$
} else {
sb.append(">"); //$NON-NLS-1$
}
if (insertTab) {
printTabulation();
}
if (insertNewLine) {
println(sb.toString());
} else {
print(sb.toString());
}
}
public void addTab() {
tab++;
}
public void startTag(String name, boolean insertTab) {
printTag(name, null, insertTab, true, false);
tab++;
}
}