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cpdf-source
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John Whitington 2021-10-01 16:59:05 +01:00
parent 806e94fb70
commit c93588ed1b
2 changed files with 54 additions and 1 deletions
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@ -1,7 +1,7 @@
2.5 (Upcoming 2022)
o Vendored in camlp-streams module before deprecation
o Can read as well as write PDFs in JSON format with -input-json
o Can read as well as write PDFs in JSON format with -j
o Environment variable CPDF_REPRODUCIBLE_DATES for testing
o Environment variable CPDF_DEBUG for -debug
o Effectively make stderr unbuffered

53
cpdfJSON.ml
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@ -69,6 +69,59 @@ let rec json_of_object pdf fcs no_stream_data = function
end;
J.Number (soi i)
let opf = function
| J.Object ["F", J.Number f] -> float_of_string f
| _ -> failwith "num: not a float"
let opi = function
| J.Object ["I", J.Number i] -> int_of_string i
| _ -> failwith "num: not a float"
let op_of_json = function
| J.Array [J.String "S"] -> O.Op_S
| J.Array [J.String "s"] -> O.Op_s
| J.Array [J.String "f"] -> O.Op_f
| J.Array [J.String "F"] -> O.Op_F
| J.Array [J.String "f*"] -> O.Op_f'
| J.Array [J.String "B"] -> O.Op_B
| J.Array [J.String "B*"] -> O.Op_B'
| J.Array [J.String "b"] -> O.Op_b
| J.Array [J.String "b*"] -> O.Op_b'
| J.Array [J.String "n"] -> O.Op_n
| J.Array [J.String "W"] -> O.Op_W
| J.Array [J.String "W*"] -> O.Op_W'
| J.Array [J.String "BT"] -> O.Op_BT
| J.Array [J.String "ET"] -> O.Op_ET
| J.Array [J.String "q"] -> O.Op_q
| J.Array [J.String "Q"] -> O.Op_Q
| J.Array [J.String "h"] -> O.Op_h
| J.Array [J.String "T*"] -> O.Op_T'
| J.Array [J.String "EMC"] -> O.Op_EMC
| J.Array [J.String "BX"] -> O.Op_BX
| J.Array [J.String "EX"] -> O.Op_EX
| J.Array [a; b; c; d; J.String "re"] -> O.Op_re (opf a, opf b, opf c, opf d)
| J.Array [a; b; c; d; J.String "k"] -> O.Op_k (opf a, opf b, opf c, opf d)
| J.Array [a; b; J.String "m"] -> O.Op_m (opf a, opf b)
| J.Array [a; b; J.String "l"] -> O.Op_l (opf a, opf b)
| J.Array [J.String s; J.String obj; J.String "BDC"] -> O.Op_BDC ("", Pdf.Null) (* FIXME read + write properly *)
| J.Array [J.String s; J.String "gs"] -> O.Op_gs s
| J.Array [J.String s; J.String "Do"] -> O.Op_Do s
| J.Array [J.String s; J.String "CS"] -> O.Op_CS s
(* rev the rest? *)
(* Op_SCN *)
| J.Array [i; J.String "j"] -> O.Op_j (opi i)
| J.Array [a; b; c; d; e; f; J.String "cm"] ->
O.Op_cm
{Pdftransform.a = opf a;
Pdftransform.b = opf b;
Pdftransform.c = opf c;
Pdftransform.d = opf d;
Pdftransform.e = opf e;
Pdftransform.f = opf f}
| j ->
Printf.eprintf "Unable to read op from %s\n" (J.show j);
failwith "op reading failed"
let json_of_op pdf no_stream_data = function
| O.Op_S -> J.Array [J.String "S"]
| O.Op_s -> J.Array [J.String "s"]