/* * Copyright 2004 by Paulo Soares. * * The contents of this file are subject to the Mozilla Public License Version 1.1 * (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the License. * * 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, 2000, 2001, 2002 by Bruno Lowagie. * All Rights Reserved. * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. * * Contributor(s): all the names of the contributors are added in the source code * where applicable. * * Alternatively, the contents of this file may be used under the terms of the * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the * provisions of LGPL are applicable instead of those above. If you wish to * allow use of your version of this file only under the terms of the LGPL * License and not to allow others to use your version of this file under * the MPL, indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by the LGPL. * If you do not delete the provisions above, a recipient may use your version * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. * * This library is free software; you can redistribute it and/or modify it * under the terms of the MPL as stated above or under the terms of the GNU * Library General Public License as published by the Free Software Foundation; * either version 2 of the License, or 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. * * 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.pdf; import java.util.HashMap; import java.util.Map; import java.util.Iterator; import java.util.ArrayList; import java.util.StringTokenizer; import java.io.IOException; import java.io.OutputStream; import java.io.OutputStreamWriter; import java.io.Writer; import java.io.BufferedWriter; import java.io.InputStream; import java.io.Reader; /** * * @author Paulo Soares (psoares@consiste.pt) */ public class SimpleNamedDestination implements SimpleXMLDocHandler { private HashMap xmlNames; private HashMap xmlLast; private SimpleNamedDestination() { } public static HashMap getNamedDestination(PdfReader reader, boolean fromNames) { IntHashtable pages = new IntHashtable(); int numPages = reader.getNumberOfPages(); for (int k = 1; k <= numPages; ++k) pages.put(reader.getPageOrigRef(k).getNumber(), k); HashMap names = fromNames ? reader.getNamedDestinationFromNames() : reader.getNamedDestinationFromStrings(); for (Iterator it = names.entrySet().iterator(); it.hasNext();) { Map.Entry entry = (Map.Entry)it.next(); ArrayList arr = ((PdfArray)entry.getValue()).getArrayList(); StringBuffer s = new StringBuffer(); try { s.append(pages.get(((PdfIndirectReference)arr.get(0)).getNumber())); s.append(' ').append(arr.get(1).toString().substring(1)); for (int k = 2; k < arr.size(); ++k) s.append(' ').append(arr.get(k).toString()); entry.setValue(s.toString()); } catch (Exception e) { it.remove(); } } return names; } /** * Exports the bookmarks to XML. The DTD for this XML is: *

*

     * <?xml version='1.0' encoding='UTF-8'?>
     * <!ELEMENT Name (#PCDATA)>
     * <!ATTLIST Name
     *    Page CDATA #IMPLIED
     * >
     * <!ELEMENT Destination (Name)*>
     * 
* @param names the names * @param out the export destination. The stream is not closed * @param encoding the encoding according to IANA conventions * @param onlyASCII codes above 127 will always be escaped with &#nn; if true, * whatever the encoding * @throws IOException on error */ public static void exportToXML(HashMap names, OutputStream out, String encoding, boolean onlyASCII) throws IOException { String jenc = SimpleXMLParser.getJavaEncoding(encoding); Writer wrt = new BufferedWriter(new OutputStreamWriter(out, jenc)); exportToXML(names, wrt, encoding, onlyASCII); } /** * Exports the bookmarks to XML. * @param names the names * @param wrt the export destination. The writer is not closed * @param encoding the encoding according to IANA conventions * @param onlyASCII codes above 127 will always be escaped with &#nn; if true, * whatever the encoding * @throws IOException on error */ public static void exportToXML(HashMap names, Writer wrt, String encoding, boolean onlyASCII) throws IOException { wrt.write("\n\n"); for (Iterator it = names.entrySet().iterator(); it.hasNext();) { Map.Entry entry = (Map.Entry)it.next(); String key = (String)entry.getKey(); String value = (String)entry.getValue(); wrt.write(" "); wrt.write(SimpleXMLParser.escapeXML(escapeBinaryString(key), onlyASCII)); wrt.write("\n"); } wrt.write("\n"); wrt.flush(); } /** * Import the names from XML. * @param in the XML source. The stream is not closed * @throws IOException on error * @return the names */ public static HashMap importFromXML(InputStream in) throws IOException { SimpleNamedDestination names = new SimpleNamedDestination(); SimpleXMLParser.parse(names, in); return names.xmlNames; } /** * Import the names from XML. * @param in the XML source. The reader is not closed * @throws IOException on error * @return the names */ public static HashMap importFromXML(Reader in) throws IOException { SimpleNamedDestination names = new SimpleNamedDestination(); SimpleXMLParser.parse(names, in); return names.xmlNames; } static PdfArray createDestinationArray(String value, PdfWriter writer) throws IOException { PdfArray ar = new PdfArray(); StringTokenizer tk = new StringTokenizer(value); int n = Integer.parseInt(tk.nextToken()); ar.add(writer.getPageReference(n)); if (!tk.hasMoreTokens()) { ar.add(PdfName.XYZ); ar.add(new float[]{0, 10000, 0}); } else { String fn = tk.nextToken(); if (fn.startsWith("/")) fn = fn.substring(1); ar.add(new PdfName(fn)); for (int k = 0; k < 4 && tk.hasMoreTokens(); ++k) { fn = tk.nextToken(); if (fn.equals("null")) ar.add(PdfNull.PDFNULL); else ar.add(new PdfNumber(fn)); } } return ar; } public static PdfDictionary outputNamedDestinationAsNames(HashMap names, PdfWriter writer) throws IOException { PdfDictionary dic = new PdfDictionary(); for (Iterator it = names.entrySet().iterator(); it.hasNext();) { Map.Entry entry = (Map.Entry)it.next(); try { String key = (String)entry.getKey(); String value = (String)entry.getValue(); PdfArray ar = createDestinationArray(value, writer); PdfName kn = new PdfName(key); dic.put(kn, ar); } catch (Exception e) { // empty on purpose } } return dic; } public static PdfDictionary outputNamedDestinationAsStrings(HashMap names, PdfWriter writer) throws IOException { HashMap n2 = new HashMap(names); for (Iterator it = n2.entrySet().iterator(); it.hasNext();) { Map.Entry entry = (Map.Entry)it.next(); try { String value = (String)entry.getValue(); PdfArray ar = createDestinationArray(value, writer); entry.setValue(writer.addToBody(ar).getIndirectReference()); } catch (Exception e) { it.remove(); } } return PdfNameTree.writeTree(n2, writer); } public static String escapeBinaryString(String s) { StringBuffer buf = new StringBuffer(); char cc[] = s.toCharArray(); int len = cc.length; for (int k = 0; k < len; ++k) { char c = cc[k]; if (c < ' ') { buf.append('\\'); String octal = "00" + Integer.toOctalString((int)c); buf.append(octal.substring(octal.length() - 3)); } else if (c == '\\') buf.append("\\\\"); else buf.append(c); } return buf.toString(); } public static String unEscapeBinaryString(String s) { StringBuffer buf = new StringBuffer(); char cc[] = s.toCharArray(); int len = cc.length; for (int k = 0; k < len; ++k) { char c = cc[k]; if (c == '\\') { if (++k >= len) { buf.append('\\'); break; } c = cc[k]; if (c >= '0' && c <= '7') { int n = c - '0'; ++k; for (int j = 0; j < 2 && k < len; ++j) { c = cc[k]; if (c >= '0' && c <= '7') { ++k; n = n * 8 + c - '0'; } else { break; } } --k; buf.append((char)n); } else buf.append(c); } else buf.append(c); } return buf.toString(); } public void endDocument() { } public void endElement(String tag) { if (tag.equals("Destination")) { if (xmlLast == null && xmlNames != null) return; else throw new RuntimeException("Destination end tag out of place."); } if (!tag.equals("Name")) throw new RuntimeException("Invalid end tag - " + tag); if (xmlLast == null || xmlNames == null) throw new RuntimeException("Name end tag out of place."); if (!xmlLast.containsKey("Page")) throw new RuntimeException("Page attribute missing."); xmlNames.put(unEscapeBinaryString((String)xmlLast.get("Name")), xmlLast.get("Page")); xmlLast = null; } public void startDocument() { } public void startElement(String tag, HashMap h) { if (xmlNames == null) { if (tag.equals("Destination")) { xmlNames = new HashMap(); return; } else throw new RuntimeException("Root element is not Destination."); } if (!tag.equals("Name")) throw new RuntimeException("Tag " + tag + " not allowed."); if (xmlLast != null) throw new RuntimeException("Nested tags are not allowed."); xmlLast = new HashMap(h); xmlLast.put("Name", ""); } public void text(String str) { if (xmlLast == null) return; String name = (String)xmlLast.get("Name"); name += str; xmlLast.put("Name", name); } }