private static void addResourceFile(String name, String resource, ZipOutputStream out)
throws IOException {
ZipEntry zipEntry = new ZipEntry(name);
out.putNextEntry(zipEntry);
OpenDocumentSpreadsheetCreator.addFromResource(resource, out);
out.closeEntry();
}
private static void exportOpenDocumentSpreadsheet(
File file, BibDatabase database, List<BibEntry> entries) throws Exception {
// First store the xml formatted content to a temporary file.
File tmpFile = File.createTempFile("opendocument", null);
OpenDocumentSpreadsheetCreator.exportOpenDocumentSpreadsheetXML(tmpFile, database, entries);
// Then add the content to the zip file:
try (BufferedInputStream in = new BufferedInputStream(new FileInputStream(tmpFile))) {
OpenDocumentSpreadsheetCreator.storeOpenDocumentSpreadsheetFile(file, in);
}
// Delete the temporary file:
if (!tmpFile.delete()) {
LOGGER.info("Cannot delete temporary export file");
}
}
@Override
public void performExport(
final BibDatabaseContext databaseContext,
final String file,
final Charset encoding,
List<BibEntry> entries)
throws Exception {
Objects.requireNonNull(databaseContext);
Objects.requireNonNull(entries);
if (!entries.isEmpty()) { // Only export if entries exists
OpenDocumentSpreadsheetCreator.exportOpenDocumentSpreadsheet(
new File(file), databaseContext.getDatabase(), entries);
}
}
private static void storeOpenDocumentSpreadsheetFile(File file, InputStream source)
throws Exception {
try (ZipOutputStream out =
new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(file)))) {
// addResourceFile("mimetype", "/resource/ods/mimetype", out);
ZipEntry ze = new ZipEntry("mimetype");
String mime = "application/vnd.oasis.opendocument.spreadsheet";
ze.setMethod(ZipEntry.STORED);
ze.setSize(mime.length());
CRC32 crc = new CRC32();
crc.update(mime.getBytes());
ze.setCrc(crc.getValue());
out.putNextEntry(ze);
for (int i = 0; i < mime.length(); i++) {
out.write(mime.charAt(i));
}
out.closeEntry();
ZipEntry zipEntry = new ZipEntry("content.xml");
// zipEntry.setMethod(ZipEntry.DEFLATED);
out.putNextEntry(zipEntry);
int c;
while ((c = source.read()) >= 0) {
out.write(c);
}
out.closeEntry();
// Add manifest (required for OOo 2.0) and "meta.xml": These are in the
// resource/ods directory, and are copied verbatim into the zip file.
OpenDocumentSpreadsheetCreator.addResourceFile("meta.xml", "/resource/ods/meta.xml", out);
OpenDocumentSpreadsheetCreator.addResourceFile(
"META-INF/manifest.xml", "/resource/ods/manifest.xml", out);
}
}