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Vendor and patch hayro-cmap for tolerant CMap parsing

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A /ToUnicode CMap with any unparsable part made the reading path
discard the whole map and fall back to the font encoding, so search
and redaction missed text the edit layer could read.  Vendor
hayro-cmap 0.1.0 and patch it to skip malformed bfchar/bfrange
entries, unresolvable usecmap references and unparseable tails,
keeping every readable entry, matching MuPDF/pdftotext and
PdfCraft's own edit-layer parser.

Fixes #3177.

Signed-off-by: Charan Rathore <180254320+charan-rathore@users.noreply.github.com>
This commit is contained in:
Charan Rathore
2026-10-18 13:07:15 +05:30
parent 99941daa5a
commit bf27cb259a
18 changed files with 3279 additions and 2 deletions
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Cargo.toml
+1
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@@ -110,6 +110,7 @@ codegen-units = 1
hayro-interpret = { path = "vendor/hayro-interpret" }
hayro = { path = "vendor/hayro" }
hayro-syntax = { path = "vendor/hayro-syntax" }
hayro-cmap = { path = "vendor/hayro-cmap" }
hayro-jbig2 = { path = "vendor/hayro-jbig2" }
lopdf = { path = "vendor/lopdf" }
winit = { path = "vendor/winit" }