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LibPDF: Allow optional inheritable page attributes
Previously, get_inheritable_object would always try to find the object and throw an error if it couldn't. The spec tells us that some page attributes, like CropBox, are optional but also inheritable. Others, like the media box and resources, are technically required by the spec, but omitted by some documents. In both cases, we are now able to search for inheritable objects and find a suitable replacement if there wasn't one.
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2 changed files with 37 additions and 15 deletions
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@ -143,7 +143,7 @@ private:
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PDFErrorOr<Destination> create_destination_from_parameters(NonnullRefPtr<ArrayObject>, HashMap<u32, u32> const&);
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PDFErrorOr<Destination> create_destination_from_dictionary_entry(NonnullRefPtr<Object> const& entry, HashMap<u32, u32> const& page_number_by_index_ref);
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PDFErrorOr<NonnullRefPtr<Object>> get_inheritable_object(DeprecatedFlyString const& name, NonnullRefPtr<DictObject>);
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PDFErrorOr<Optional<NonnullRefPtr<Object>>> get_inheritable_object(DeprecatedFlyString const& name, NonnullRefPtr<DictObject>);
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PDFErrorOr<NonnullRefPtr<Object>> find_in_name_tree(NonnullRefPtr<DictObject> root, DeprecatedFlyString name);
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PDFErrorOr<NonnullRefPtr<Object>> find_in_name_tree_nodes(NonnullRefPtr<ArrayObject> siblings, DeprecatedFlyString name);
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