PDFBox 3.0.1 / RandomAccessReadBuffer bug?

[david.klika]

Hello

 

I think that this is not correct in some cases:

 

  public RandomAccessReadBuffer(ByteBuffer input) {

        chunkSize = input.capacity();

 

IMHO input.limit() shoud be used instead of input.capacity(). 

 

When it matters: I have a ByteArrayOutputStream to that is written a PDF
document. Later I want to open the PDF document using PDFBox again. If I use
part of the internal buffer directly (without copying), eg.
ByteBuffer.wrap(bos.getInternalBuffer(), 0, bos.size()), I get exception
like that:

 

java.lang.IllegalArgumentException: newPosition > limit: (31556 > 20960)

 

                at
java.base/java.nio.Buffer.createPositionException(Buffer.java:352)

                at java.base/java.nio.Buffer.position(Buffer.java:327)

                at
java.base/java.nio.ByteBuffer.position(ByteBuffer.java:1551)

                at
java.base/java.nio.ByteBuffer.position(ByteBuffer.java:285)

                at
org.apache.pdfbox.io.RandomAccessReadBuffer.seek(RandomAccessReadBuffer.java
:187)

                at
org.apache.pdfbox.pdfparser.COSParser.getStartxrefOffset(COSParser.java:506)

                at
org.apache.pdfbox.pdfparser.COSParser.retrieveTrailer(COSParser.java:259)

                at
org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:107)

                at
org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:171)

                at
org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:136)

                at org.apache.pdfbox.Loader.loadPDF(Loader.java:466)

                at org.apache.pdfbox.Loader.loadPDF(Loader.java:369)

 

31556 is the buffer capacity, 20960 is its limit

 

I think the buffer should not be read beyond its limit.

 

Regards

David Klika