276 lines
11 KiB
C#
276 lines
11 KiB
C#
using System;
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using System.IO;
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using System.Collections;
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using iTextSharp.text.pdf;
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using iTextSharp.text.xml.simpleparser;
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/*
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* $Id: XmpWriter.cs,v 1.10 2008/05/13 11:26:16 psoares33 Exp $
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*
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*
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* Copyright 2005 by Bruno Lowagie.
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* (the "License"); you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the License.
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*
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* The Original Code is 'iText, a free JAVA-PDF library'.
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*
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* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
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* the Initial Developer are Copyright (C) 1999-2005 by Bruno Lowagie.
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* All Rights Reserved.
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* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
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* are Copyright (C) 2000-2005 by Paulo Soares. All Rights Reserved.
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*
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* Contributor(s): all the names of the contributors are added in the source code
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* where applicable.
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*
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* Alternatively, the contents of this file may be used under the terms of the
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* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
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* provisions of LGPL are applicable instead of those above. If you wish to
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* allow use of your version of this file only under the terms of the LGPL
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* License and not to allow others to use your version of this file under
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* the MPL, indicate your decision by deleting the provisions above and
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* replace them with the notice and other provisions required by the LGPL.
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* If you do not delete the provisions above, a recipient may use your version
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* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE
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*
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* This library is free software; you can redistribute it and/or modify it
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* under the terms of the MPL as stated above or under the terms of the GNU
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* Library General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU LIBRARY GENERAL PUBLIC LICENSE for more
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* details.
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*
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* If you didn't download this code from the following link, you should check if
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* you aren't using an obsolete version:
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* http://www.lowagie.com/iText/
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*/
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namespace iTextSharp.text.xml.xmp {
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/**
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* With this class you can create an Xmp Stream that can be used for adding
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* Metadata to a PDF Dictionary. Remark that this class doesn't cover the
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* complete XMP specification.
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*/
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public class XmpWriter {
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/** A possible charset for the XMP. */
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public const String UTF8 = "UTF-8";
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/** A possible charset for the XMP. */
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public const String UTF16 = "UTF-16";
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/** A possible charset for the XMP. */
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public const String UTF16BE = "UTF-16BE";
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/** A possible charset for the XMP. */
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public const String UTF16LE = "UTF-16LE";
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/** String used to fill the extra space. */
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public const String EXTRASPACE = " \n";
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/** You can add some extra space in the XMP packet; 1 unit in this variable represents 100 spaces and a newline. */
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protected int extraSpace;
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/** The writer to which you can write bytes for the XMP stream. */
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protected StreamWriter writer;
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/** The about string that goes into the rdf:Description tags. */
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protected String about;
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/** The end attribute. */
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protected char end = 'w';
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/**
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* Creates an XmpWriter.
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* @param os
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* @param utfEncoding
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* @param extraSpace
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* @throws IOException
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*/
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public XmpWriter(Stream os, string utfEncoding, int extraSpace) {
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this.extraSpace = extraSpace;
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writer = new StreamWriter(os, new EncodingNoPreamble(IanaEncodings.GetEncodingEncoding(utfEncoding)));
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writer.Write("<?xpacket begin=\"\uFEFF\" id=\"W5M0MpCehiHzreSzNTczkc9d\"?>\n");
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writer.Write("<x:xmpmeta xmlns:x=\"adobe:ns:meta/\">\n");
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writer.Write("<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\">\n");
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about = "";
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}
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/**
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* Creates an XmpWriter.
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* @param os
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* @throws IOException
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*/
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public XmpWriter(Stream os) : this(os, UTF8, 20) {
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}
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/** Sets the XMP to read-only */
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public void SetReadOnly() {
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end = 'r';
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}
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/**
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* @param about The about to set.
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*/
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public String About {
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set {
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this.about = value;
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}
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}
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/**
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* Adds an rdf:Description.
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* @param xmlns
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* @param content
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* @throws IOException
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*/
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public void AddRdfDescription(String xmlns, String content) {
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writer.Write("<rdf:Description rdf:about=\"");
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writer.Write(about);
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writer.Write("\" ");
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writer.Write(xmlns);
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writer.Write(">");
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writer.Write(content);
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writer.Write("</rdf:Description>\n");
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}
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/**
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* Adds an rdf:Description.
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* @param s
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* @throws IOException
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*/
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public void AddRdfDescription(XmpSchema s) {
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writer.Write("<rdf:Description rdf:about=\"");
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writer.Write(about);
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writer.Write("\" ");
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writer.Write(s.Xmlns);
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writer.Write(">");
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writer.Write(s.ToString());
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writer.Write("</rdf:Description>\n");
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}
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/**
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* Flushes and closes the XmpWriter.
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* @throws IOException
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*/
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public void Close() {
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writer.Write("</rdf:RDF>");
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writer.Write("</x:xmpmeta>\n");
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for (int i = 0; i < extraSpace; i++) {
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writer.Write(EXTRASPACE);
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}
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writer.Write("<?xpacket end=\"" + end + "\"?>");
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writer.Flush();
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writer.Close();
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}
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/**
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* @param os
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* @param info
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* @throws IOException
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*/
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public XmpWriter(Stream os, PdfDictionary info, int PdfXConformance) : this(os) {
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if (info != null) {
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DublinCoreSchema dc = new DublinCoreSchema();
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PdfSchema p = new PdfSchema();
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XmpBasicSchema basic = new XmpBasicSchema();
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PdfObject obj;
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foreach (PdfName key in info.Keys) {
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obj = info.Get(key);
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if (obj == null)
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continue;
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if (PdfName.TITLE.Equals(key)) {
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dc.AddTitle(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.AUTHOR.Equals(key)) {
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dc.AddAuthor(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.SUBJECT.Equals(key)) {
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dc.AddSubject(((PdfString)obj).ToUnicodeString());
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dc.AddDescription(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.KEYWORDS.Equals(key)) {
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p.AddKeywords(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.CREATOR.Equals(key)) {
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basic.AddCreatorTool(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.PRODUCER.Equals(key)) {
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p.AddProducer(((PdfString)obj).ToUnicodeString());
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}
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if (PdfName.CREATIONDATE.Equals(key)) {
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basic.AddCreateDate(((PdfDate)obj).GetW3CDate());
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}
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if (PdfName.MODDATE.Equals(key)) {
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basic.AddModDate(((PdfDate)obj).GetW3CDate());
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}
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}
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if (dc.Count > 0) AddRdfDescription(dc);
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if (p.Count > 0) AddRdfDescription(p);
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if (basic.Count > 0) AddRdfDescription(basic);
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if (PdfXConformance == PdfWriter.PDFA1A || PdfXConformance == PdfWriter.PDFA1B) {
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PdfA1Schema a1 = new PdfA1Schema();
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if (PdfXConformance == PdfWriter.PDFA1A)
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a1.AddConformance("A");
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else
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a1.AddConformance("B");
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AddRdfDescription(a1);
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}
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}
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}
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/**
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* @param os
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* @param info
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* @throws IOException
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*/
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public XmpWriter(Stream os, Hashtable info) : this(os) {
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if (info != null) {
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DublinCoreSchema dc = new DublinCoreSchema();
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PdfSchema p = new PdfSchema();
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XmpBasicSchema basic = new XmpBasicSchema();
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String value;
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foreach (DictionaryEntry entry in info) {
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String key = (String)entry.Key;
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value = (String)entry.Value;
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if (value == null)
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continue;
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if ("Title".Equals(key)) {
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dc.AddTitle(value);
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}
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if ("Author".Equals(key)) {
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dc.AddAuthor(value);
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}
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if ("Subject".Equals(key)) {
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dc.AddSubject(value);
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dc.AddDescription(value);
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}
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if ("Keywords".Equals(key)) {
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p.AddKeywords(value);
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}
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if ("Creator".Equals(key)) {
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basic.AddCreatorTool(value);
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}
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if ("Producer".Equals(key)) {
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p.AddProducer(value);
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}
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if ("CreationDate".Equals(key)) {
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basic.AddCreateDate(PdfDate.GetW3CDate(value));
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}
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if ("ModDate".Equals(key)) {
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basic.AddModDate(PdfDate.GetW3CDate(value));
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}
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}
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if (dc.Count > 0) AddRdfDescription(dc);
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if (p.Count > 0) AddRdfDescription(p);
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if (basic.Count > 0) AddRdfDescription(basic);
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}
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}
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}
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} |