Got PDF::Reader::MalformedPDFError while reading pdf
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Ajay Anarse
Sep 16, 2019, 1:47:39 AM9/16/19
to PDF::Reader
Hi Guys,
I am getting error MalformedPDFError while reading pdf and the error message is xref table not found at offset 248410 (\u009C\u0087e\u009A¯$ != xref) . The pdf can be opened in Adobe Reader.
Please find the attached pdf for the reference and please let me known the way to handle this.
Thanks,
Ajay.
James Healy
Sep 17, 2019, 9:04:32 AM9/17/19
to pdf-r...@googlegroups.com
I suspect this file is a bit non-compliant with the spec, and Adobe
Reader is doing a better job and compensating.
The trailer of the file suggests there's an additional xref table
stored in a xref stream at byte offset 248405 (try opening the file in
a text editor and searching for 248405).
However, there's no xref stream at byte offset 248405.
if I comment out the line that reads xref streams in pdf-reader, then
the file can be processed:
diff --git a/lib/pdf/reader/xref.rb b/lib/pdf/reader/xref.rb
index 9e6a56c..5e91ce3 100644
--- a/lib/pdf/reader/xref.rb
+++ b/lib/pdf/reader/xref.rb
@@ -145,7 +145,7 @@ class PDF::Reader
raise MalformedPDFError, "PDF malformed, trailer should
be a dictionary"
end
- load_offsets(trailer[:XRefStm]) if trailer.has_key?(:XRefStm)
+ #load_offsets(trailer[:XRefStm]) if trailer.has_key?(:XRefStm)
load_offsets(trailer[:Prev].to_i) if trailer.has_key?(:Prev)
trailer
I'd be happy to merge a PR attempts to continue reading the PDF if no
xref stream is found at the offset. It'd need a spec based on a real
PDF, but I can add that to the PR if that's helpful.
James
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Reader is doing a better job and compensating.
The trailer of the file suggests there's an additional xref table
stored in a xref stream at byte offset 248405 (try opening the file in
a text editor and searching for 248405).
However, there's no xref stream at byte offset 248405.
if I comment out the line that reads xref streams in pdf-reader, then
the file can be processed:
diff --git a/lib/pdf/reader/xref.rb b/lib/pdf/reader/xref.rb
index 9e6a56c..5e91ce3 100644
--- a/lib/pdf/reader/xref.rb
+++ b/lib/pdf/reader/xref.rb
@@ -145,7 +145,7 @@ class PDF::Reader
raise MalformedPDFError, "PDF malformed, trailer should
be a dictionary"
end
- load_offsets(trailer[:XRefStm]) if trailer.has_key?(:XRefStm)
+ #load_offsets(trailer[:XRefStm]) if trailer.has_key?(:XRefStm)
load_offsets(trailer[:Prev].to_i) if trailer.has_key?(:Prev)
trailer
I'd be happy to merge a PR attempts to continue reading the PDF if no
xref stream is found at the offset. It'd need a spec based on a real
PDF, but I can add that to the PR if that's helpful.
James
> You received this message because you are subscribed to the Google Groups "PDF::Reader" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to pdf-reader+...@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/pdf-reader/9357f168-2d26-40c8-b9d4-d40b55eb60ed%40googlegroups.com.
Jon Kern
Sep 19, 2019, 1:46:53 PM9/19/19
to pdf-r...@googlegroups.com
I just want to say how much I appreciate your attention to the PDF-READER community, James.
To view this discussion on the web visit https://groups.google.com/d/msgid/pdf-reader/CAE4DO2RYfcF9AHgvjjOR5Cum8t8Yqhn-wMA5AQ%2B4Fz%2BPen5aNw%40mail.gmail.com.
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