tree dc17a6e598cc1fa6a8b2846152ebd151b0e0dade
parent a066864b6e4f48f013204605bbb52dfcc28d0ee6
author Lei Zhang <thestig@chromium.org> 1681774135 +0000
committer Lei Zhang <thestig@chromium.org> 1681774135 +0000

Cherry-pick code to improve PDF object tracking

This cherry-picks the following CLs and squashes them into a single CL
for easier merging:

Add RemoveTextObjectWithTwoPagesSharingContentStreamAndResources test

Change-Id: I5fc0f0888d71368c0dd257931e4a1013301f639f
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105212
(cherry picked from commit 7bfe65fa528d99232031ac203b2e56da44643db3)

Add RemoveTextObjectWithTwoPagesSharingContentArrayAndResources test

Change-Id: I396d1cf0a9d3da88337c459aa7ef6f6ec189bb1d
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105491
(cherry picked from commit f3d0f929f461effa86ac27716bd304ba7d534445)

Switch CPDF_PageContentManager to have a CPDF_Document pointer

Change-Id: Iebc74c98071241ea220a185d43937749b9885c76
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105531
(cherry picked from commit 0a111609332bb25f78e7485778f3457648954493)

Fix nits in cpdf_pagecontentmanager.h

Change-Id: I512e5b3d5b976a2485196ae765dd8c1c98275e67
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105472
(cherry picked from commit 4e8a0feaafffd19f747e373bd9f98927ddd3a61f)

Encapsulate more in CPDF_PageContentManager

Change-Id: I198bcd4972603989123b01ff53bd455395f26d5b
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105530
(cherry picked from commit 06a0689d429fde72152dc6c9c2245b86c045ee8a)

Add some using statements in fpdf_save_embeddertest.cpp

Change-Id: If1b9064532740e5de7074f747c23cc0de878ca0c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105552
(cherry picked from commit 5018240ebf009a67fc9b2613a6f3f8bda1e80c03)

Test trailer generation in FPDFSaveEmbedderTest.SaveLinearizedDoc

Change-Id: I3dfc67b5839af85f73c15555cf23f2fe9b9c687a
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105533
(cherry picked from commit 1f4904f680cd7a63d96f072a371ef20ce939cd7a)

Check for removed resources in saved output in RemoveTextObject test

Change-Id: Ia934158b5fd72a42fba0125aa1637d1c980bda3c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105570
(cherry picked from commit 4d48929e3ffc3d43f2b72383a761d3df6e859e57)

Add RemoveTextObjectWithTwoPagesSharingResources test

Change-Id: If14cb333430a5bb11e50fbb6fd86f1898cf5f29a
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105590
(cherry picked from commit 01ea024b74dc8fcc16001792ef5b20b53f3959f0)

Save the trailer's object number when parsing

Change-Id: I86f980a09d2214c50412ce65a905dd92ebc85a6a
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105610
(cherry picked from commit 1e5dee361ee112e2b152ae7890a0fef567ccc4e9)

Add object tree traversal utility functions

Change-Id: I28817068d50c79f36d12bd50c1910937241194a5
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105611
(cherry picked from commit 01b85b79a2bba7e895a18a32dbee840eae81eb31)

Avoid generating PDFs with unreferenced objects

Change-Id: I4c9d447ab745732909c4f7b5c6061886428a92dd
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105612
(cherry picked from commit 28f8db4c040f33c1d0955747e2aef11d3803f321)

Keep track of Font and XObject resources

Change-Id: I510e6c51eda28535ed00e87b6e10971f7178122c
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105613
(cherry picked from commit 69703b37cc02aceac37b504d34b50f1c3c24302a)

Keep track of ExtGState resources

Change-Id: I786a515b4ddcfa9ea2dccb94d3d7ad6a189ec7ce
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105614
(cherry picked from commit 9b9bf7539e7795c44a2b9985232a8cda652b53f0)

Remove a duplicate FPDFEditEmbedderTest test case

Change-Id: Ieb0806520af652501930ad10fcdbfd33b5952c9d
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105710
(cherry picked from commit 02516521c768c4a07ffeef6f1f32ad72cfd7c1d1)

Add RemoveTextObjectWithTwoPagesSharingResourcesDict test case

Change-Id: I30d4f35e41c5be78568aab118eb90d460d1c030e
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105730
(cherry picked from commit 6c3577ca2ff7f3e6dc498f1b61be384f29db18d3)

Split CPDF_PageContentGenerator::UpdateContentStreams()

Change-Id: I9a688fd486bb851dceedca633856bbe5471b9b71
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105732
(cherry picked from commit 31f23b9263ab8de97b6884bca23dc30a3c520e1a)

Do copy-on-write in CPDF_PageContentGenerator

Change-Id: I9e5659421ee6e6d8b7807bc4159fe086f70982ef
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105733
(cherry picked from commit 692f0719e4cd4387daca51fb3a0151929648aa11)

Do copy-on-write in CPDF_PageContentManager

Change-Id: I4b52894ab44889bae0df9415542f018c91436c1a
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/105630
(cherry picked from commit ef30200275bbfdea90782f1a1d62c0474aab0e74)

Bug: chromium:1428724,pdfium:2012
Change-Id: I7148a4d6c30666792ea0c8cc6ae5186495afb343
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/106190
Reviewed-by: Tom Sepez <tsepez@chromium.org>