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Towards 30_002

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John Whitington
2025-01-19 11:04:21 +08:00
parent be20906b89
commit f86979130b
1 changed files with 19 additions and 5 deletions
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24
cpdfua.ml
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@@ -13,7 +13,6 @@ open Cpdferror
11-001 11-002 11-003 11-004 11-005
17-003
28-018
30-002
31-007 31-008 31-011 31-012 31-013 31-014 31-015 31-016 31-018 31-030 *)
type subformat =
@@ -896,9 +895,24 @@ let matterhorn_30_001 _ _ pdf =
(* Form XObject contains MCIDs and is referenced more than once. *)
let matterhorn_30_002 _ _ pdf =
(* We need to consider inheritence here. What solutions do we already have
for that, and do we need anything new? *)
unimpl ()
let contains_mcid n =
let obj = Pdf.lookup_obj pdf n in
let ops = Pdfops.parse_operators pdf (match Pdf.lookup_direct pdf "/Resources" obj with Some r -> r | None -> Pdf.Dictionary []) [obj] in
keep (function Pdfops.Op_BDC (n, d) when Pdf.lookup_direct pdf "/MCID" d <> None -> true | _ -> false) ops <> []
in
(* 0. Regularize inheritance amongst pages. *)
Pdfpage.replace_inherit pdf (Pdf.page_reference_numbers pdf);
(* 1. Find list of xobject object numbers *)
let xobj_objnums =
Pdf.objselect (function o -> match Pdf.lookup_direct pdf "/Subtype" o with Some (Pdf.Name "/Form") -> true | _ -> false) pdf
in
(* 2. Trim to only ones containing MCIDs *)
let containing_mcids = keep contains_mcid xobj_objnums in
(* 3. Find from which place each of these is referenced. For pages, it's from
a page. For Xobjects, it's from an xobject. But, two pages (or xobjects)
could reference an xobject which references an xobject with an MCID - so
there is transitivity to deal with! *)
()
(* A Type 0 font dictionary with encoding other than Identity-H and Identity-V
has values for Registry in both CIDSystemInfo dictionaries that are not
@@ -1416,7 +1430,7 @@ let matterhorn =
("28-017", "A PrinterMark annotation is included in the logical structure.", "UA1:7.18.8-1", matterhorn_28_017);
("28-018", "The appearance stream of a PrinterMark annotation is not marked as Artifact.", "UA1:7.18.8-2", matterhorn_28_018);
("30-001", "A reference XObject is present.", "UA1:7.2", matterhorn_30_001);
("30-002", "Form XObject contains MCIDs and is referenced more than once.", "UA1:7.21.3.1-1", matterhorn_30_002);
("30-002", "Form XObject contains MCIDs and is referenced more than once.", "UA1:7.20", matterhorn_30_002);
("31-001", "A Type 0 font dictionary with encoding other than Identity-H and Identity-V has values for Registry in both CIDSystemInfo dictionaries that are not identical.", "UA1:7.21.3-1", matterhorn_31_001);
("31-002", "A Type 0 font dictionary with encoding other than Identity-H and Identity-V has values for Ordering in both CIDSystemInfo dictionaries that are not identical.", "UA1:7.21.3.1-1", matterhorn_31_002);
("31-003", "A Type 0 font dictionary with encoding other than Identity-H and Identity-V has a value for Supplement in the CIDSystemInfo dictionary of the CID font that is less than the value for Supplement in the CIDSystemInfo dictionary of the CMap.", "UA1:7.21.3.1-1", matterhorn_31_003);