001: /*
002: * $Id: XmpSchema.java 2904 2007-08-30 17:18:07Z psoares33 $
003: * $Name: $
004: *
005: * Copyright 2005 by Bruno Lowagie.
006: *
007: * The contents of this file are subject to the Mozilla Public License Version 1.1
008: * (the "License"); you may not use this file except in compliance with the License.
009: * You may obtain a copy of the License at http://www.mozilla.org/MPL/
010: *
011: * Software distributed under the License is distributed on an "AS IS" basis,
012: * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013: * for the specific language governing rights and limitations under the License.
014: *
015: * The Original Code is 'iText, a free JAVA-PDF library'.
016: *
017: * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
018: * the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
019: * All Rights Reserved.
020: * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
021: * are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
022: *
023: * Contributor(s): all the names of the contributors are added in the source code
024: * where applicable.
025: *
026: * Alternatively, the contents of this file may be used under the terms of the
027: * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
028: * provisions of LGPL are applicable instead of those above. If you wish to
029: * allow use of your version of this file only under the terms of the LGPL
030: * License and not to allow others to use your version of this file under
031: * the MPL, indicate your decision by deleting the provisions above and
032: * replace them with the notice and other provisions required by the LGPL.
033: * If you do not delete the provisions above, a recipient may use your version
034: * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE
035: *
036: * This library is free software; you can redistribute it and/or modify it
037: * under the terms of the MPL as stated above or under the terms of the GNU
038: * Library General Public License as published by the Free Software Foundation;
039: * either version 2 of the License, or any later version.
040: *
041: * This library is distributed in the hope that it will be useful, but WITHOUT
042: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
043: * FOR A PARTICULAR PURPOSE. See the GNU LIBRARY GENERAL PUBLIC LICENSE for more
044: * details.
045: *
046: * If you didn't download this code from the following link, you should check if
047: * you aren't using an obsolete version:
048: * http://www.lowagie.com/iText/
049: */
050:
051: package com.lowagie.text.xml.xmp;
052:
053: import java.util.Enumeration;
054: import java.util.Properties;
055:
056: /**
057: * Abstract superclass of the XmpSchemas supported by iText.
058: */
059: public abstract class XmpSchema extends Properties {
060:
061: /** the namesspace */
062: protected String xmlns;
063:
064: /** Constructs an XMP schema.
065: * @param xmlns
066: */
067: public XmpSchema(String xmlns) {
068: super ();
069: this .xmlns = xmlns;
070: }
071:
072: /**
073: * The String representation of the contents.
074: * @return a String representation.
075: */
076: public String toString() {
077: StringBuffer buf = new StringBuffer();
078: for (Enumeration e = this .propertyNames(); e.hasMoreElements();) {
079: process(buf, e.nextElement());
080: }
081: return buf.toString();
082: }
083:
084: /**
085: * Processes a property
086: * @param buf
087: * @param p
088: */
089: protected void process(StringBuffer buf, Object p) {
090: buf.append('<');
091: buf.append(p);
092: buf.append('>');
093: buf.append(this .get(p));
094: buf.append("</");
095: buf.append(p);
096: buf.append('>');
097: }
098:
099: /**
100: * @return Returns the xmlns.
101: */
102: public String getXmlns() {
103: return xmlns;
104: }
105:
106: /**
107: * @param key
108: * @param value
109: * @return the previous property (null if there wasn't one)
110: */
111: public Object addProperty(String key, String value) {
112: return this .setProperty(key, value);
113: }
114:
115: /**
116: * @see java.util.Properties#setProperty(java.lang.String, java.lang.String)
117: */
118: public Object setProperty(String key, String value) {
119: return super .setProperty(key, escape(value));
120: }
121:
122: /**
123: * @see java.util.Properties#setProperty(java.lang.String, java.lang.String)
124: *
125: * @param key
126: * @param value
127: * @return the previous property (null if there wasn't one)
128: */
129: public Object setProperty(String key, XmpArray value) {
130: return super .setProperty(key, value.toString());
131: }
132:
133: /**
134: * @see java.util.Properties#setProperty(java.lang.String, java.lang.String)
135: *
136: * @param key
137: * @param value
138: * @return the previous property (null if there wasn't one)
139: */
140: public Object setProperty(String key, LangAlt value) {
141: return super .setProperty(key, value.toString());
142: }
143:
144: /**
145: * @param content
146: * @return an escaped string
147: */
148: public static String escape(String content) {
149: StringBuffer buf = new StringBuffer();
150: for (int i = 0; i < content.length(); i++) {
151: switch (content.charAt(i)) {
152: case '<':
153: buf.append("<");
154: break;
155: case '>':
156: buf.append(">");
157: break;
158: case '\'':
159: buf.append("'");
160: break;
161: case '\"':
162: buf.append(""");
163: break;
164: case '&':
165: buf.append("&");
166: break;
167: default:
168: buf.append(content.charAt(i));
169: }
170: }
171: return buf.toString();
172: }
173: }
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