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John Hewson edited comment on PDFBOX-2250 at 8/25/14 4:47 PM: -------------------------------------------------------------- [~lehmi], the spec says that, but the [Adobe Supplement to the ISO 32000|http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/adobe_supplement_iso32000.pdf], which describes Acrobat's behaviour, adds that: {quote} Acrobat viewers require only that the header appear somewhere within the first 1024 bytes of the file. {quote} Such PDFs are not unheard of, PDFParser#parseHeader() contains code which scans the PDF for the header (although it doesn't limit to 1024 bytes and contains some misleading comments). was (Author: jahewson): [~lehmi], the spec says that, but the[ Adobe Supplement to the ISO 32000|http://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/adobe_supplement_iso32000.pdf, which describes Acrobat's behaviour, adds that: {quote} Acrobat viewers require only that the header appear somewhere within the first 1024 bytes of the file. {quote} Such PDFs are not unheard of, PDFParser#parseHeader() contains code which scans the PDF for the header (although it doesn't limit to 1024 bytes and contains some misleading comments). > Improve XRef self healing mechanism > ----------------------------------- > > Key: PDFBOX-2250 > URL: https://issues.apache.org/jira/browse/PDFBOX-2250 > Project: PDFBox > Issue Type: Improvement > Components: Parsing > Affects Versions: 1.8.6, 1.8.7, 2.0.0 > Reporter: Andreas Lehmkühler > Assignee: Andreas Lehmkühler > Attachments: PDFBOX-2250-107425-empty-xref.pdf, > PDFBOX-2250-110264-xref-zeronumber.pdf > > > PDFBOX-1769 introduced a "self healing" mechanism to repair corrupt XRef > offsets. But that one was just a starter and there remain a lot of issues to > be solved. I'm planing to solve at least some of them. > All fixes and improvements are targeting the non-sequential parser and I > won't port those changes to the old parser. -- This message was sent by Atlassian JIRA (v6.2#6252)