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Devin Jankowski
2023-06-21 12:46:23 -04:00
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iTechSharp/iTextSharp/text/xml/xmp/XmpWriter.cs Normal file
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using System;
using System.IO;
using System.Collections;
using iTextSharp.text.pdf;
using iTextSharp.text.xml.simpleparser;
/*
* $Id: XmpWriter.cs,v 1.10 2008/05/13 11:26:16 psoares33 Exp $
*
*
* Copyright 2005 by Bruno Lowagie.
*
* 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) 1999-2005 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000-2005 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/
*/
namespace iTextSharp.text.xml.xmp {
/**
* With this class you can create an Xmp Stream that can be used for adding
* Metadata to a PDF Dictionary. Remark that this class doesn't cover the
* complete XMP specification.
*/
public class XmpWriter {
/** A possible charset for the XMP. */
public const String UTF8 = "UTF-8";
/** A possible charset for the XMP. */
public const String UTF16 = "UTF-16";
/** A possible charset for the XMP. */
public const String UTF16BE = "UTF-16BE";
/** A possible charset for the XMP. */
public const String UTF16LE = "UTF-16LE";
/** String used to fill the extra space. */
public const String EXTRASPACE = " \n";
/** You can add some extra space in the XMP packet; 1 unit in this variable represents 100 spaces and a newline. */
protected int extraSpace;
/** The writer to which you can write bytes for the XMP stream. */
protected StreamWriter writer;
/** The about string that goes into the rdf:Description tags. */
protected String about;
/** The end attribute. */
protected char end = 'w';
/**
* Creates an XmpWriter.
* @param os
* @param utfEncoding
* @param extraSpace
* @throws IOException
*/
public XmpWriter(Stream os, string utfEncoding, int extraSpace) {
this.extraSpace = extraSpace;
writer = new StreamWriter(os, new EncodingNoPreamble(IanaEncodings.GetEncodingEncoding(utfEncoding)));
writer.Write("<?xpacket begin=\"\uFEFF\" id=\"W5M0MpCehiHzreSzNTczkc9d\"?>\n");
writer.Write("<x:xmpmeta xmlns:x=\"adobe:ns:meta/\">\n");
writer.Write("<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\">\n");
about = "";
}
/**
* Creates an XmpWriter.
* @param os
* @throws IOException
*/
public XmpWriter(Stream os) : this(os, UTF8, 20) {
}
/** Sets the XMP to read-only */
public void SetReadOnly() {
end = 'r';
}
/**
* @param about The about to set.
*/
public String About {
set {
this.about = value;
}
}
/**
* Adds an rdf:Description.
* @param xmlns
* @param content
* @throws IOException
*/
public void AddRdfDescription(String xmlns, String content) {
writer.Write("<rdf:Description rdf:about=\"");
writer.Write(about);
writer.Write("\" ");
writer.Write(xmlns);
writer.Write(">");
writer.Write(content);
writer.Write("</rdf:Description>\n");
}
/**
* Adds an rdf:Description.
* @param s
* @throws IOException
*/
public void AddRdfDescription(XmpSchema s) {
writer.Write("<rdf:Description rdf:about=\"");
writer.Write(about);
writer.Write("\" ");
writer.Write(s.Xmlns);
writer.Write(">");
writer.Write(s.ToString());
writer.Write("</rdf:Description>\n");
}
/**
* Flushes and closes the XmpWriter.
* @throws IOException
*/
public void Close() {
writer.Write("</rdf:RDF>");
writer.Write("</x:xmpmeta>\n");
for (int i = 0; i < extraSpace; i++) {
writer.Write(EXTRASPACE);
}
writer.Write("<?xpacket end=\"" + end + "\"?>");
writer.Flush();
writer.Close();
}
/**
* @param os
* @param info
* @throws IOException
*/
public XmpWriter(Stream os, PdfDictionary info, int PdfXConformance) : this(os) {
if (info != null) {
DublinCoreSchema dc = new DublinCoreSchema();
PdfSchema p = new PdfSchema();
XmpBasicSchema basic = new XmpBasicSchema();
PdfObject obj;
foreach (PdfName key in info.Keys) {
obj = info.Get(key);
if (obj == null)
continue;
if (PdfName.TITLE.Equals(key)) {
dc.AddTitle(((PdfString)obj).ToUnicodeString());
}
if (PdfName.AUTHOR.Equals(key)) {
dc.AddAuthor(((PdfString)obj).ToUnicodeString());
}
if (PdfName.SUBJECT.Equals(key)) {
dc.AddSubject(((PdfString)obj).ToUnicodeString());
dc.AddDescription(((PdfString)obj).ToUnicodeString());
}
if (PdfName.KEYWORDS.Equals(key)) {
p.AddKeywords(((PdfString)obj).ToUnicodeString());
}
if (PdfName.CREATOR.Equals(key)) {
basic.AddCreatorTool(((PdfString)obj).ToUnicodeString());
}
if (PdfName.PRODUCER.Equals(key)) {
p.AddProducer(((PdfString)obj).ToUnicodeString());
}
if (PdfName.CREATIONDATE.Equals(key)) {
basic.AddCreateDate(((PdfDate)obj).GetW3CDate());
}
if (PdfName.MODDATE.Equals(key)) {
basic.AddModDate(((PdfDate)obj).GetW3CDate());
}
}
if (dc.Count > 0) AddRdfDescription(dc);
if (p.Count > 0) AddRdfDescription(p);
if (basic.Count > 0) AddRdfDescription(basic);
if (PdfXConformance == PdfWriter.PDFA1A || PdfXConformance == PdfWriter.PDFA1B) {
PdfA1Schema a1 = new PdfA1Schema();
if (PdfXConformance == PdfWriter.PDFA1A)
a1.AddConformance("A");
else
a1.AddConformance("B");
AddRdfDescription(a1);
}
}
}
/**
* @param os
* @param info
* @throws IOException
*/
public XmpWriter(Stream os, Hashtable info) : this(os) {
if (info != null) {
DublinCoreSchema dc = new DublinCoreSchema();
PdfSchema p = new PdfSchema();
XmpBasicSchema basic = new XmpBasicSchema();
String value;
foreach (DictionaryEntry entry in info) {
String key = (String)entry.Key;
value = (String)entry.Value;
if (value == null)
continue;
if ("Title".Equals(key)) {
dc.AddTitle(value);
}
if ("Author".Equals(key)) {
dc.AddAuthor(value);
}
if ("Subject".Equals(key)) {
dc.AddSubject(value);
dc.AddDescription(value);
}
if ("Keywords".Equals(key)) {
p.AddKeywords(value);
}
if ("Creator".Equals(key)) {
basic.AddCreatorTool(value);
}
if ("Producer".Equals(key)) {
p.AddProducer(value);
}
if ("CreationDate".Equals(key)) {
basic.AddCreateDate(PdfDate.GetW3CDate(value));
}
if ("ModDate".Equals(key)) {
basic.AddModDate(PdfDate.GetW3CDate(value));
}
}
if (dc.Count > 0) AddRdfDescription(dc);
if (p.Count > 0) AddRdfDescription(p);
if (basic.Count > 0) AddRdfDescription(basic);
}
}
}
}