ICEpdf
  1. ICEpdf
  2. PDF-336

Improve read support for handling files with incorrect xref offsets

          Details

          • Type: Bug Bug
          • Status: Closed
          • Priority: Major Major
          • Resolution: Fixed
          • Affects Version/s: 4.2.2
          • Fix Version/s: 5.0.0 alpha1, 5.0
          • Component/s: Core/Parsing
          • Labels:
            None
          • Environment:
            any

            Description

            The PDF in question has several Errors in the byte offsets defined in the xref table. Generally speaking ICEpdf should detect the error and start a full document parse, locating all the objects in the file. For some reason the fall back code isn't getting executed and page loading fails. It should be noted that acrobat displays a few errors when loading the document.

            Tasks for this bug.
            - figure out why the fallback code isn't executing
            - consider an parser enhancement, instead of parsing the whole file into memory on failure, we should consider updating the xref table with new byte offset found by parsing file, but not keeping the objects in memory.
            1. PDF File
              linearized.pdf
              3.07 MB
              Patrick Corless
            2. PDF File
              graph.pdf
              638 kB
              Patrick Corless

              Activity

              Repository Revision Date User Message
              ICEsoft Public SVN Repository #32602 Tue Dec 04 09:56:34 MST 2012 patrick.corless PDF-336 updated catalog initialization to try and force ny potential xref errors upfront so that the the linear traversal code can properly execute.
              Files Changed
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/util/Parser.java
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/util/ContentParser.java
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/Catalog.java
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/graphics/ImageReference.java
              Commit graph MODIFY /icepdf/trunk/icepdf/core/src/org/icepdf/core/pobjects/Document.java

                People

                • Assignee:
                  Patrick Corless
                  Reporter:
                  Patrick Corless
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                  Dates

                  • Created:
                    Updated:
                    Resolved: