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| author | Artem Strygin <art-snake@yandex-team.ru> | 2018-07-23 19:15:14 +0000 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2018-07-23 19:15:14 +0000 |
| commit | 2dcf20fa8d3035f4366178654abbfbc95aa9e799 (patch) | |
| tree | e47d1dccaced6bd7c5725ce403fc4622d0ae4028 /core/fpdfapi | |
| parent | 76a1a353cd600f482261df730549605578eb8f76 (diff) | |
| download | pdfium-2dcf20fa8d3035f4366178654abbfbc95aa9e799.tar.xz | |
Add support of rebuilding crossrefs with compressed objects.
Change-Id: I0743c34f0206f85828570430edb9f62b6b0cdbb5
Reviewed-on: https://pdfium-review.googlesource.com/37315
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Art Snake <art-snake@yandex-team.ru>
Diffstat (limited to 'core/fpdfapi')
| -rw-r--r-- | core/fpdfapi/parser/cpdf_object_stream.h | 3 | ||||
| -rw-r--r-- | core/fpdfapi/parser/cpdf_parser.cpp | 13 |
2 files changed, 14 insertions, 2 deletions
diff --git a/core/fpdfapi/parser/cpdf_object_stream.h b/core/fpdfapi/parser/cpdf_object_stream.h index 816c1be77e..44aa8f72e5 100644 --- a/core/fpdfapi/parser/cpdf_object_stream.h +++ b/core/fpdfapi/parser/cpdf_object_stream.h @@ -33,6 +33,9 @@ class CPDF_ObjectStream { bool HasObject(uint32_t obj_number) const; std::unique_ptr<CPDF_Object> ParseObject(CPDF_IndirectObjectHolder* pObjList, uint32_t obj_number) const; + const std::map<uint32_t, uint32_t>& objects_offsets() const { + return objects_offsets_; + } protected: explicit CPDF_ObjectStream(const CPDF_Stream* stream); diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp index d4ad0656e6..4d3835795c 100644 --- a/core/fpdfapi/parser/cpdf_parser.cpp +++ b/core/fpdfapi/parser/cpdf_parser.cpp @@ -650,8 +650,6 @@ bool CPDF_Parser::RebuildCrossRef() { const FX_FILESIZE obj_pos = numbers[0].second; const uint32_t obj_num = numbers[0].first; const uint32_t gen_num = numbers[1].first; - if (obj_num < kMaxObjectNumber) - cross_ref_table->AddNormal(obj_num, gen_num, obj_pos); m_pSyntax->SetPos(obj_pos); const std::unique_ptr<CPDF_Stream> pStream = @@ -664,6 +662,17 @@ bool CPDF_Parser::RebuildCrossRef() { pdfium::MakeUnique<CPDF_CrossRefTable>( ToDictionary(pStream->GetDict()->Clone()))); } + + if (obj_num < kMaxObjectNumber) { + cross_ref_table->AddNormal(obj_num, gen_num, obj_pos); + if (const auto object_stream = + CPDF_ObjectStream::Create(pStream.get())) { + for (const auto& it : object_stream->objects_offsets()) { + if (it.first < kMaxObjectNumber) + cross_ref_table->AddCompressed(it.first, obj_num); + } + } + } } numbers.clear(); } |