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More matterhorn font work

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John Whitington
2024-06-08 16:00:08 +01:00
parent b1d5cbcf65
commit 34905dd85f
1 changed files with 18 additions and 1 deletions
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19
cpdfua.ml
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@@ -591,7 +591,24 @@ let matterhorn_31_021 pdf =
(* The Differences array in the Encoding entry in a non-symbolic TrueType font
dictionary contains one or more glyph names which are not listed in the
Adobe Glyph List. *)
let matterhorn_31_022 pdf = ()
let matterhorn_31_022 pdf =
Pdf.objiter
(fun _ o ->
match Pdf.lookup_direct pdf "/Subtype" o with
| Some (Pdf.Name "/TrueType") ->
begin match is_non_symbolic pdf o, Pdf.lookup_direct pdf "/Encoding" o with
| true, Some d ->
begin match Pdf.lookup_direct pdf "/Differences" d with
| Some (Pdf.Array a) ->
let glyphs = Pdfglyphlist.glyph_hashes () in
let names = option_map (function Pdf.Name n -> Some n | _ -> None) a in
if not (List.for_all (Hashtbl.mem glyphs) names) then merror ()
| _ -> ()
end
| _ -> ()
end
| _ -> ())
pdf
(* The Differences array is present in the Encoding entry in a non-symbolic
TrueType font dictionary but the embedded font program does not contain a