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Rework 01_005

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John Whitington
2025-01-29 13:46:22 +08:00
parent d37b62e222
commit f5b3a1df04
1 changed files with 15 additions and 7 deletions
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22
cpdfua.ml
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@@ -1,8 +1,7 @@
open Pdfutil
open Cpdferror
(* Implements all Matterhorn checks except for those which require looking
deep inside font files. Implemented except:
(* Implements most Matterhorn checks except for:
Partially implemented:
31-009 31-027 Can require looking inside font files
@@ -14,7 +13,8 @@ open Cpdferror
files without it.)
Unimplemented:
31-007 31-008 31-011 31-012 31-013 31-014 31-015 31-016 31-018 31-030 Fonts *)
31-007 31-008 31-011 31-012 31-013 31-014 31-015 31-016 31-018 31-030
Require looking inside font files *)
type subformat =
| PDFUA1
@@ -209,11 +209,19 @@ let matterhorn_01_004 _ _ pdf =
iter (fun ops -> content_in_artifact false false ops) (all_ops pdf)
(* Content is neither marked as Artifact nor tagged as real content. *)
(* Which operations are real? *)
let op_is_real = function
| Pdfops.( Op_m _ | Op_l _ | Op_c _ | Op_v _ | Op_y _ | Op_h | Op_re _ | Op_S | Op_s | Op_f | Op_F | Op_f'
| Op_B | Op_B' | Op_b | Op_b' | Op_n | Op_W | Op_W' | Op_BT | Op_ET | Op_Tj _ | Op_TJ _ | Op_' _
| Op_'' _ | Op_sh _ | InlineImage _ | Op_Do _) -> true
| _ -> false
(* Look at a list of ops and return operators neither marked as neither artifect nor content *)
let naked_ops ops = []
let matterhorn_01_005 _ _ pdf =
let untagged_content ops =
if Cpdftype.add_artifacts ops <> ops then merror ()
in
iter (fun ops -> untagged_content ops) (all_ops pdf)
iter (fun ops -> if List.exists op_is_real (naked_ops ops) then merror ()) (all_ops pdf)
(* Suspects entry has a value of true. *)
let matterhorn_01_007 _ _ pdf =