| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.pdf; |
| |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.io.Writer; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.commons.io.output.CountingOutputStream; |
| |
| /** |
| * Class representing a PDF dictionary object |
| */ |
| public class PDFDictionary extends PDFObject { |
| |
| /** |
| * the entry map |
| */ |
| protected Map entries = new java.util.HashMap(); |
| |
| /** |
| * maintains the order of the entries added to the entry map. Whenever you modify |
| * "entries", always make sure you adjust this list accordingly. |
| */ |
| protected List order = new java.util.ArrayList(); |
| |
| /** |
| * Create a new dictionary object. |
| */ |
| public PDFDictionary() { |
| super(); |
| } |
| |
| /** |
| * Create a new dictionary object. |
| * @param parent the object's parent if any |
| */ |
| public PDFDictionary(PDFObject parent) { |
| super(parent); |
| } |
| |
| /** |
| * Puts a new name/value pair. |
| * @param name the name |
| * @param value the value |
| */ |
| public void put(String name, Object value) { |
| if (value instanceof PDFObject) { |
| PDFObject pdfObj = (PDFObject)value; |
| if (!pdfObj.hasObjectNumber()) { |
| pdfObj.setParent(this); |
| } |
| } |
| if (!entries.containsKey(name)) { |
| this.order.add(name); |
| } |
| this.entries.put(name, value); |
| } |
| |
| /** |
| * Puts a new name/value pair. |
| * @param name the name |
| * @param value the value |
| */ |
| public void put(String name, int value) { |
| if (!entries.containsKey(name)) { |
| this.order.add(name); |
| } |
| this.entries.put(name, new Integer(value)); |
| } |
| |
| /** |
| * Returns the value given a name. |
| * @param name the name of the value |
| * @return the value or null, if there's no value with the given name. |
| */ |
| public Object get(String name) { |
| return this.entries.get(name); |
| } |
| |
| /** {@inheritDoc} */ |
| protected int output(OutputStream stream) throws IOException { |
| CountingOutputStream cout = new CountingOutputStream(stream); |
| Writer writer = PDFDocument.getWriterFor(cout); |
| if (hasObjectNumber()) { |
| writer.write(getObjectID()); |
| } |
| |
| writeDictionary(cout, writer); |
| |
| if (hasObjectNumber()) { |
| writer.write("\nendobj\n"); |
| } |
| |
| writer.flush(); |
| return cout.getCount(); |
| } |
| |
| /** |
| * Writes the contents of the dictionary to a StringBuffer. |
| * @param out the OutputStream (for binary content) |
| * @param writer the Writer (for text content, wraps the above OutputStream) |
| * @throws IOException if an I/O error occurs |
| */ |
| protected void writeDictionary(OutputStream out, Writer writer) throws IOException { |
| writer.write("<<"); |
| boolean compact = (this.order.size() <= 2); |
| Iterator iter = this.order.iterator(); |
| while (iter.hasNext()) { |
| String key = (String)iter.next(); |
| if (compact) { |
| writer.write(' '); |
| } else { |
| writer.write("\n "); |
| } |
| writer.write('/'); |
| writer.write(key); |
| writer.write(' '); |
| Object obj = this.entries.get(key); |
| formatObject(obj, out, writer); |
| } |
| if (compact) { |
| writer.write(' '); |
| } else { |
| writer.write('\n'); |
| } |
| writer.write(">>\n"); |
| } |
| |
| } |