RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-27 00:27:45 +00:00
Code Issues Activity Actions

LibPDF: Replace TODO()s in Type0Font code with Errors

Browse source 
...which causes us to not render these fonts instead of crashing.

Reduces number of crashes on 300 random PDFs from the web (the first 300
from 0000.zip from
https://pdfa.org/new-large-scale-pdf-corpus-now-publicly-available/)
from 64 (21%) to 42 (14%).
This commit is contained in:
Nico Weber 2023-10-20 10:09:50 -04:00 • committed by Andrew Kaster
parent 33443f7991
commit 095a2a17ed
1 changed files with 3 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

6
Userland/Libraries/LibPDF/Fonts/Type0Font.cpp
View file

@ -49,9 +49,9 @@ PDFErrorOr<NonnullOwnPtr<CIDFontType2>> CIDFontType2::create(Document* document,
if (descendant->contains(CommonNames::CIDToGIDMap)) {
auto value = TRY(descendant->get_object(document, CommonNames::CIDToGIDMap));
if (value->is<StreamObject>()) {
TODO();
return Error::rendering_unsupported_error("Type0 font subtype 2: support for stream cid maps not yet implemented");
} else if (value->cast<NameObject>()->name() != "Identity") {
TODO();
return Error::rendering_unsupported_error("Type0 font: support for non-Identity named cid maps not yet implemented");
}
}
@ -98,7 +98,7 @@ PDFErrorOr<void> Type0Font::initialize(Document* document, NonnullRefPtr<DictObj
// FIXME: Support arbitrary CMaps
auto cmap_value = TRY(dict->get_object(document, CommonNames::Encoding));
if (!cmap_value->is<NameObject>() || cmap_value->cast<NameObject>()->name() != CommonNames::IdentityH)
TODO();
return Error::rendering_unsupported_error("Type0 font: support for general Encodings not yet implemented");
auto descendant_font_value = TRY(dict->get_array(document, CommonNames::DescendantFonts));
auto descendant_font = TRY(descendant_font_value->get_dict_at(document, 0));