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/*
* $Id: XmpSchema.java,v 1.5 2005/09/08 10:27:29 blowagie Exp $
* $Name: $
*
* Copyright 2005 by Bruno Lowagie.
*
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.lowagie.text.xml.xmp;
import java.util.Enumeration;
import java.util.Properties;
/**
* Abstract superclass of the XmpSchemas supported by iText.
*/
public abstract class XmpSchema extends Properties {
/** the namesspace */
protected String xmlns;
/** Constructs an XMP schema.
* @param xmlns
*/
public XmpSchema(String xmlns) {
super();
this.xmlns = xmlns;
}
/**
* The String representation of the contents.
* @return a String representation.
*/
public String toString() {
StringBuffer buf = new StringBuffer();
for (Enumeration e = this.propertyNames(); e.hasMoreElements(); ) {
process(buf, e.nextElement());
}
return buf.toString();
}
/**
* Processes a property
* @param buf
* @param p
*/
protected void process(StringBuffer buf, Object p) {
buf.append("<");
buf.append(p);
buf.append(">");
buf.append(this.get(p));
buf.append("</");
buf.append(p);
buf.append(">");
}
/**
* @return Returns the xmlns.
*/
public String getXmlns() {
return xmlns;
}
/**
* @param key
* @param value
* @return the previous property (null if there wasn't one)
*/
public synchronized Object addProperty(String key, String value) {
return this.setProperty(key, value);
}
/**
* @see java.util.Properties#setProperty(java.lang.String, java.lang.String)
*/
public synchronized Object setProperty(String key, String value) {
return super.setProperty(key, escape(value));
}
/**
* @see java.util.Properties#setProperty(java.lang.String, java.lang.String)
*
* @param key
* @param value
* @return the previous property (null if there wasn't one)
*/
public synchronized Object setProperty(String key, XmpArray value) {
return super.setProperty(key, value.toString());
}
/**
* @param content
* @return an escaped string
*/
public static String escape(String content) {
StringBuffer buf = new StringBuffer();
for (int i = 0; i < content.length(); i++) {
switch(content.charAt(i)) {
case '<':
buf.append("<");
break;
case '>':
buf.append(">");
break;
case '\'':
buf.append("'");
break;
case '\"':
buf.append(""");
break;
case '&':
buf.append("&");
break;
default:
buf.append(content.charAt(i));
}
}
return buf.toString();
}
}
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