Improve XMP handling - latex free field, remove file field

CHANGELOG.md

@@ -17,6 +17,9 @@ Note that this project **does not** adhere to [Semantic Versioning](http://semve
 ### Changed
 
 - We improved the Latex2Unicode conversion [#8639](https://github.com/JabRef/jabref/pull/8639)
+- Writing BibTeX data into a PDF (XMP) removes braces. [#8452](https://github.com/JabRef/jabref/issues/8452)
+- Writing BibTeX data into a PDF (XMP) does not write the `file` field.
+- Writing BibTeX data into a PDF (XMP) considers the configured keyword separator (and does not use "," as default any more)
 
 ### Fixed
 

src/main/java/org/jabref/gui/exporter/WriteMetadataToPdfAction.java

@@ -5,7 +5,6 @@
 import java.util.Collection;
 import java.util.List;
 import java.util.Optional;
-import java.util.stream.Collectors;
 
 import javafx.application.Platform;
 import javafx.geometry.Insets;
@@ -129,8 +128,8 @@ private void writeMetadata() {
                                     .map(file -> file.findIn(stateManager.getActiveDatabase().get(), filePreferences))
                                     .filter(Optional::isPresent)
                                     .map(Optional::get)
-                                    .filter(path -> FileUtil.isPDFFile(path))
-                                    .collect(Collectors.toList());
+                                    .filter(FileUtil::isPDFFile)
+                                    .toList();
 
             Platform.runLater(() -> optionsDialog.getProgressArea()
                                                  .appendText(entry.getCitationKey().orElse(Localization.lang("undefined")) + "\n"));
@@ -144,13 +143,14 @@ private void writeMetadata() {
                     if (Files.exists(file)) {
                         try {
                             writeMetadataToFile(file, entry, stateManager.getActiveDatabase().get(), database);
-                            Platform.runLater(
-                                    () -> optionsDialog.getProgressArea().appendText("  " + Localization.lang("OK") + ".\n"));
+                            Platform.runLater(() ->
+                                    optionsDialog.getProgressArea()
+                                                 .appendText("  " + Localization.lang("OK") + ".\n"));
                             entriesChanged++;
                         } catch (Exception e) {
                             Platform.runLater(() -> {
-                                optionsDialog.getProgressArea().appendText("  " + Localization.lang("Error while writing") + " '"
-                                        + file.toString() + "':\n");
+                                optionsDialog.getProgressArea()
+                                             .appendText("  " + Localization.lang("Error while writing") + " '" + file + "':\n");
                                 optionsDialog.getProgressArea().appendText("    " + e.getLocalizedMessage() + "\n");
                             });
                             errors++;
@@ -160,23 +160,24 @@ private void writeMetadata() {
                         Platform.runLater(() -> {
                             optionsDialog.getProgressArea()
                                          .appendText("  " + Localization.lang("Skipped - PDF does not exist") + ":\n");
-                            optionsDialog.getProgressArea().appendText("    " + file.toString() + "\n");
+                            optionsDialog.getProgressArea()
+                                         .appendText("    " + file + "\n");
                         });
                     }
                 }
             }
 
             if (optionsDialog.isCanceled()) {
-                Platform.runLater(
-                        () -> optionsDialog.getProgressArea().appendText("\n" + Localization.lang("Operation canceled.") + "\n"));
+                Platform.runLater(() ->
+                        optionsDialog.getProgressArea().appendText("\n" + Localization.lang("Operation canceled.") + "\n"));
                 break;
             }
         }
         Platform.runLater(() -> {
             optionsDialog.getProgressArea()
                          .appendText("\n"
-                                 + Localization.lang("Finished writing metadata for %0 file (%1 skipped, %2 errors).", String
-                                 .valueOf(entriesChanged), String.valueOf(skipped), String.valueOf(errors)));
+                                 + Localization.lang("Finished writing metadata for %0 file (%1 skipped, %2 errors).",
+                                 String.valueOf(entriesChanged), String.valueOf(skipped), String.valueOf(errors)));
             optionsDialog.done();
         });
 
@@ -192,7 +193,7 @@ private void writeMetadata() {
      * This writes both XMP data and embeds a corresponding .bib file
      */
     synchronized private void writeMetadataToFile(Path file, BibEntry entry, BibDatabaseContext databaseContext, BibDatabase database) throws Exception {
-        XmpUtilWriter.writeXmp(file, entry, database, xmpPreferences);
+        new XmpUtilWriter(xmpPreferences).writeXmp(file, entry, database);
 
         EmbeddedBibFilePdfExporter embeddedBibExporter = new EmbeddedBibFilePdfExporter(databaseContext.getMode(), entryTypesManager, fieldWriterPreferences);
         embeddedBibExporter.exportToFileByPath(databaseContext, database, filePreferences, file);

src/main/java/org/jabref/gui/fieldeditors/LinkedFileViewModel.java

@@ -426,7 +426,7 @@ public void writeMetadataToPdf() {
                 synchronized (linkedFile) {
                     try {
                         // Similar code can be found at {@link org.jabref.gui.exporter.WriteMetadataToPdfAction.writeMetadataToFile}
-                        XmpUtilWriter.writeXmp(file.get(), entry, databaseContext.getDatabase(), preferences.getXmpPreferences());
+                        new XmpUtilWriter(preferences.getXmpPreferences()).writeXmp(file.get(), entry, databaseContext.getDatabase());
 
                         EmbeddedBibFilePdfExporter embeddedBibExporter = new EmbeddedBibFilePdfExporter(databaseContext.getMode(), Globals.entryTypesManager, preferences.getFieldWriterPreferences());
                         embeddedBibExporter.exportToFileByPath(databaseContext, databaseContext.getDatabase(), preferences.getFilePreferences(), file.get());
@@ -462,7 +462,7 @@ public void download() {
 
             BackgroundTask<Path> downloadTask = prepareDownloadTask(targetDirectory.get(), urlDownload);
             downloadTask.onSuccess(destination -> {
-                boolean isDuplicate = false;
+                boolean isDuplicate;
                 try {
                     isDuplicate = FileNameUniqueness.isDuplicatedFile(targetDirectory.get(), destination.getFileName(), dialogService);
                 } catch (IOException e) {

src/main/java/org/jabref/logic/bibtex/comparator/EntryComparator.java

@@ -66,7 +66,7 @@ public int compare(BibEntry e1, BibEntry e2) {
             }
         }
 
-        // If the field is author or editor, we rearrange names so they are
+        // If the field is author or editor, we rearrange names to achieve that they are
         // sorted according to last name.
         if (sortField.getProperties().contains(FieldProperty.PERSON_NAMES)) {
             if (f1 != null) {

src/main/java/org/jabref/logic/exporter/XmpExporter.java

@@ -1,8 +1,6 @@
 package org.jabref.logic.exporter;
 
-import java.io.BufferedWriter;
 import java.io.IOException;
-import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collections;
@@ -57,7 +55,7 @@ public void export(BibDatabaseContext databaseContext, Path file, List<BibEntry>
                 if (file.getParent() == null) {
                     entryFile = Path.of(suffix);
                 } else {
-                    entryFile = Path.of(file.getParent().toString() + "/" + suffix);
+                    entryFile = Path.of(file.getParent() + "/" + suffix);
                 }
                 this.writeBibToXmp(entryFile, Collections.singletonList(entry));
             }
@@ -67,10 +65,7 @@ public void export(BibDatabaseContext databaseContext, Path file, List<BibEntry>
     }
 
     private void writeBibToXmp(Path file, List<BibEntry> entries) throws IOException {
-        String xmpContent = XmpUtilWriter.generateXmpStringWithoutXmpDeclaration(entries, this.xmpPreferences);
-        try (BufferedWriter writer = Files.newBufferedWriter(file, StandardCharsets.UTF_8)) {
-            writer.write(xmpContent);
-            writer.flush();
-        }
+        String xmpContent = new XmpUtilWriter(this.xmpPreferences).generateXmpStringWithoutXmpDeclaration(entries);
+        Files.writeString(file, xmpContent);
     }
 }

src/main/java/org/jabref/logic/exporter/XmpPdfExporter.java

@@ -27,7 +27,7 @@ public void export(BibDatabaseContext databaseContext, Path pdfFile, List<BibEnt
         Objects.requireNonNull(entries);
 
         if (pdfFile.toString().endsWith(".pdf")) {
-            XmpUtilWriter.writeXmp(pdfFile, entries, databaseContext.getDatabase(), xmpPreferences);
+            new XmpUtilWriter(xmpPreferences).writeXmp(pdfFile, entries, databaseContext.getDatabase());
         }
     }
 }

src/main/java/org/jabref/logic/importer/fileformat/PdfContentImporter.java

@@ -200,7 +200,7 @@ public ParserResult importDatabase(String data) throws IOException {
     @Override
     public ParserResult importDatabase(Path filePath) {
         final ArrayList<BibEntry> result = new ArrayList<>(1);
-        try (PDDocument document = XmpUtilReader.loadWithAutomaticDecryption(filePath)) {
+        try (PDDocument document = new XmpUtilReader().loadWithAutomaticDecryption(filePath)) {
             String firstPageContents = getFirstPageContents(document);
             Optional<BibEntry> entry = getEntryFromPDFContent(firstPageContents, OS.NEWLINE);
             entry.ifPresent(result::add);

src/main/java/org/jabref/logic/importer/fileformat/PdfEmbeddedBibFileImporter.java

@@ -64,7 +64,7 @@ public ParserResult importDatabase(String data) throws IOException {
 
     @Override
     public ParserResult importDatabase(Path filePath) {
-        try (PDDocument document = XmpUtilReader.loadWithAutomaticDecryption(filePath)) {
+        try (PDDocument document = new XmpUtilReader().loadWithAutomaticDecryption(filePath)) {
             return new ParserResult(getEmbeddedBibFileEntries(document));
         } catch (EncryptedPdfsNotSupportedException e) {
             return ParserResult.fromErrorMessage(Localization.lang("Decryption not supported."));

src/main/java/org/jabref/logic/importer/fileformat/PdfVerbatimBibTextImporter.java

@@ -56,7 +56,7 @@ public ParserResult importDatabase(String data) throws IOException {
     @Override
     public ParserResult importDatabase(Path filePath) {
         List<BibEntry> result = new ArrayList<>(1);
-        try (PDDocument document = XmpUtilReader.loadWithAutomaticDecryption(filePath)) {
+        try (PDDocument document = new XmpUtilReader().loadWithAutomaticDecryption(filePath)) {
             String firstPageContents = getFirstPageContents(document);
             BibtexParser parser = new BibtexParser(importFormatPreferences, new DummyFileUpdateMonitor());
             result = parser.parseEntries(firstPageContents);

src/main/java/org/jabref/logic/importer/fileformat/PdfXmpImporter.java

@@ -54,7 +54,7 @@ public ParserResult importDatabase(String data) throws IOException {
     public ParserResult importDatabase(Path filePath) {
         Objects.requireNonNull(filePath);
         try {
-            return new ParserResult(XmpUtilReader.readXmp(filePath, xmpPreferences));
+            return new ParserResult(new XmpUtilReader().readXmp(filePath, xmpPreferences));
         } catch (IOException exception) {
             return ParserResult.fromError(exception);
         }