protected byte[] getStreamData(PDStream pdstream) throws IOException {
List<COSName> filters = pdstream.getFilters();
if (filters != null && filters.contains(COSName.DCT_DECODE)) {
// JPG
InputStream input =
pdstream.getPartiallyFilteredStream(
Arrays.asList(
new String[] {
COSName.DCT_DECODE.getName(), COSName.DCT_DECODE_ABBREVIATION.getName()
}));
return readBytes(input);
}
if (filters != null && filters.contains(COSName.CCITTFAX_DECODE)) {
// TIFF
InputStream input =
pdstream.getPartiallyFilteredStream(
Arrays.asList(
new String[] {
COSName.CCITTFAX_DECODE.getName(),
COSName.CCITTFAX_DECODE_ABBREVIATION.getName()
}));
return readBytes(input);
}
return pdstream.getByteArray();
}
/**
* Create a new PDPage content stream.
*
* @param document The document the page is part of.
* @param sourcePage The page to write the contents to.
* @param appendContent Indicates whether content will be overwritten. If false all previous
* content is deleted.
* @param compress Tell if the content stream should compress the page contents.
* @throws IOException If there is an error writing to the page contents.
*/
public PDPageContentStream(
PDDocument document, PDPage sourcePage, boolean appendContent, boolean compress)
throws IOException {
page = sourcePage;
resources = page.getResources();
if (resources == null) {
resources = new PDResources();
page.setResources(resources);
}
fonts = resources.getFonts();
xobjects = resources.getImages();
// If request specifies the need to append to the document
if (appendContent) {
// Get the pdstream from the source page instead of creating a new one
PDStream contents = sourcePage.getContents();
// Create a pdstream to append new content
PDStream contentsToAppend = new PDStream(document);
// This will be the resulting COSStreamArray after existing and new streams are merged
COSStreamArray compoundStream = null;
// If contents is already an array, a new stream is simply appended to it
if (contents.getStream() instanceof COSStreamArray) {
compoundStream = (COSStreamArray) contents.getStream();
compoundStream.appendStream(contentsToAppend.getStream());
} else {
// Creates the COSStreamArray and adds the current stream plus a new one to it
COSArray newArray = new COSArray();
newArray.add(contents.getCOSObject());
newArray.add(contentsToAppend.getCOSObject());
compoundStream = new COSStreamArray(newArray);
}
if (compress) {
List filters = new ArrayList();
filters.add(COSName.FLATE_DECODE);
contentsToAppend.setFilters(filters);
}
// Sets the compoundStream as page contents
sourcePage.setContents(new PDStream(compoundStream));
output = contentsToAppend.createOutputStream();
} else {
PDStream contents = new PDStream(document);
if (compress) {
List filters = new ArrayList();
filters.add(COSName.FLATE_DECODE);
contents.setFilters(filters);
}
sourcePage.setContents(contents);
output = contents.createOutputStream();
}
formatDecimal.setMaximumFractionDigits(10);
formatDecimal.setGroupingUsed(false);
}
