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17
18
19
20 package org.apache.fop.pdf;
21
22 import java.io.IOException  ;
23 import java.io.OutputStream ;
24 import java.util.Date ;
25
26 import javax.xml.transform.TransformerConfigurationException ;
27
28 import org.apache.xmlgraphics.xmp.Metadata;
29 import org.apache.xmlgraphics.xmp.XMPSerializer;
30 import org.apache.xmlgraphics.xmp.schemas.DublinCoreAdapter;
31 import org.apache.xmlgraphics.xmp.schemas.DublinCoreSchema;
32 import org.apache.xmlgraphics.xmp.schemas.XMPBasicAdapter;
33 import org.apache.xmlgraphics.xmp.schemas.XMPBasicSchema;
34 import org.apache.xmlgraphics.xmp.schemas.pdf.AdobePDFAdapter;
35 import org.apache.xmlgraphics.xmp.schemas.pdf.AdobePDFSchema;
36 import org.apache.xmlgraphics.xmp.schemas.pdf.PDFAAdapter;
37 import org.apache.xmlgraphics.xmp.schemas.pdf.PDFAOldXMPSchema;
38 import org.apache.xmlgraphics.xmp.schemas.pdf.PDFAXMPSchema;
39
40 import org.xml.sax.SAXException ;
41
42
46 public class PDFMetadata extends PDFStream {
47
48 private Metadata xmpMetadata;
49 private boolean readOnly = true;
50
51
52 public PDFMetadata(Metadata xmp, boolean readOnly) {
53 super();
54 if (xmp == null) {
55 throw new NullPointerException (
56 "The parameter for the XMP Document must not be null");
57 }
58 this.xmpMetadata = xmp;
59 this.readOnly = readOnly;
60 }
61
62
63 protected void setupFilterList() {
64 if (!getFilterList().isInitialized()) {
65 getFilterList().addDefaultFilters(
66 getDocumentSafely().getFilterMap(),
67 PDFFilterList.METADATA_FILTER);
68 }
69 super.setupFilterList();
70 }
71
72
75 public Metadata getMetadata() {
76 return this.xmpMetadata;
77 }
78
79
84 protected int output(java.io.OutputStream stream)
85 throws java.io.IOException {
86 int length = super.output(stream);
87 this.xmpMetadata = null; return length;
89 }
90
91
92 protected void outputRawStreamData(OutputStream out) throws IOException {
93 try {
94 XMPSerializer.writeXMPPacket(xmpMetadata, out, this.readOnly);
95 } catch (TransformerConfigurationException tce) {
96 throw new IOException ("Error setting up Transformer for XMP stream serialization: "
97 + tce.getMessage());
98 } catch (SAXException saxe) {
99 throw new IOException ("Error while serializing XMP stream: "
100 + saxe.getMessage());
101 }
102 }
103
104
105 protected String buildStreamDict(String lengthEntry) {
106 final String filterEntry = getFilterList().buildFilterDictEntries();
107 if (getDocumentSafely().getProfile().getPDFAMode().isPDFA1LevelB()
108 && filterEntry != null && filterEntry.length() > 0) {
109 throw new PDFConformanceException(
110 "The Filter key is prohibited when PDF/A-1 is active");
111 }
112 final StringBuffer sb = new StringBuffer (128);
113 sb.append(getObjectID());
114 sb.append("<< ");
115 sb.append("/Type /Metadata");
116 sb.append("\n/Subtype /XML");
117 sb.append("\n/Length " + lengthEntry);
118 sb.append("\n" + filterEntry);
119 sb.append("\n>>\n");
120 return sb.toString();
121 }
122
123
128 public static Metadata createXMPFromUserAgent(PDFDocument pdfDoc) {
129 Metadata meta = new Metadata();
130
131 PDFInfo info = pdfDoc.getInfo();
132
133 if (info.getCreationDate() == null) {
135 Date d = new Date ();
136 info.setCreationDate(d);
137 }
138
139
143 DublinCoreAdapter dc = DublinCoreSchema.getAdapter(meta);
145 if (info.getAuthor() != null) {
146 dc.addCreator(info.getAuthor());
147 }
148 if (info.getTitle() != null) {
149 dc.setTitle(info.getTitle());
150 }
151 if (info.getSubject() != null) {
152 dc.addSubject(info.getSubject());
153 }
154 dc.addDate(info.getCreationDate());
155
156 PDFAMode pdfaMode = pdfDoc.getProfile().getPDFAMode();
158 if (pdfaMode.isPDFA1LevelB()) {
159 PDFAAdapter pdfa = PDFAXMPSchema.getAdapter(meta);
160 PDFAAdapter pdfaOld = PDFAOldXMPSchema.getAdapter(meta);
163 pdfa.setPart(1);
164 pdfaOld.setPart(1);
165 if (pdfaMode == PDFAMode.PDFA_1A) {
166 pdfa.setConformance("A"); pdfaOld.setConformance("A"); } else {
169 pdfa.setConformance("B"); pdfaOld.setConformance("B"); }
172 }
173
174 XMPBasicAdapter xmpBasic = XMPBasicSchema.getAdapter(meta);
176 xmpBasic.setCreateDate(info.getCreationDate());
177 PDFProfile profile = pdfDoc.getProfile();
178 if (profile.isModDateRequired()) {
179 xmpBasic.setModifyDate(info.getCreationDate());
180 }
181 if (info.getCreator() != null) {
182 xmpBasic.setCreatorTool(info.getCreator());
183 }
184
185 AdobePDFAdapter adobePDF = AdobePDFSchema.getAdapter(meta);
186 if (info.getKeywords() != null) {
187 adobePDF.setKeywords(info.getKeywords());
188 }
189 if (info.getProducer() != null) {
190 adobePDF.setProducer(info.getProducer());
191 }
192 adobePDF.setPDFVersion(pdfDoc.getPDFVersionString());
193
194
195 return meta;
196 }
197
198
204 public static void updateInfoFromMetadata(Metadata meta, PDFInfo info) {
205 DublinCoreAdapter dc = DublinCoreSchema.getAdapter(meta);
206 info.setTitle(dc.getTitle());
207 String [] creators = dc.getCreators();
208 if (creators != null && creators.length > 0) {
209 info.setAuthor(creators[0]);
210 } else {
211 info.setAuthor(null);
212 }
213 String [] subjects = dc.getSubjects();
214 if (subjects != null && subjects.length > 0) {
217 info.setSubject(subjects[0]);
218 } else {
219 info.setSubject(null);
220 }
221
222 AdobePDFAdapter pdf = AdobePDFSchema.getAdapter(meta);
223 info.setKeywords(pdf.getKeywords());
224 info.setProducer(pdf.getProducer());
225
226 XMPBasicAdapter xmpBasic = XMPBasicSchema.getAdapter(meta);
227 info.setCreator(xmpBasic.getCreatorTool());
228 Date d;
229 d = xmpBasic.getCreateDate();
230 xmpBasic.setCreateDate(d); info.setCreationDate(d);
234 d = xmpBasic.getModifyDate();
235 if (d != null) { xmpBasic.setModifyDate(d);
237 info.setModDate(d);
238 }
239 }
240 }
241 |
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