| /* |
| * 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.render.pdf.pdfbox; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.pdfbox.cos.COSBase; |
| import org.apache.pdfbox.cos.COSDictionary; |
| import org.apache.pdfbox.cos.COSName; |
| import org.apache.pdfbox.cos.COSObject; |
| |
| import org.apache.fop.pdf.PDFDocument; |
| |
| public class UniqueName { |
| private String key; |
| private List<COSName> resourceNames; |
| |
| public UniqueName(String key, COSDictionary sourcePageResources, boolean disable) { |
| if (disable) { |
| resourceNames = Collections.emptyList(); |
| } else { |
| key = key.split("#")[0]; |
| this.key = Integer.toString(key.hashCode()); |
| resourceNames = getResourceNames(sourcePageResources); |
| } |
| } |
| |
| protected String getName(COSName cn) { |
| if (resourceNames.contains(cn)) { |
| return cn.getName() + key; |
| } |
| return cn.getName(); |
| } |
| |
| protected void writeName(StringBuilder sb, COSName cn) throws IOException { |
| ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| cn.writePDF(bos); |
| String name = bos.toString(PDFDocument.ENCODING); |
| sb.append(name); |
| if (resourceNames.contains(cn)) { |
| sb.append(key); |
| } |
| } |
| |
| private List<COSName> getResourceNames(COSDictionary sourcePageResources) { |
| List<COSName> resourceNames = new ArrayList<COSName>(); |
| for (COSBase e : sourcePageResources.getValues()) { |
| if (e instanceof COSObject) { |
| e = ((COSObject) e).getObject(); |
| } |
| if (e instanceof COSDictionary) { |
| COSDictionary d = (COSDictionary) e; |
| resourceNames.addAll(d.keySet()); |
| } |
| } |
| return resourceNames; |
| } |
| } |