142 lines
5.5 KiB
OCaml
142 lines
5.5 KiB
OCaml
module J = Tjjson
|
|
module P = Pdf
|
|
module O = Pdfops
|
|
|
|
let rec json_of_object fcs = function
|
|
| P.Null -> J.String "null"
|
|
| P.Boolean b -> J.Bool b
|
|
| P.Integer i -> J.Number (string_of_int i)
|
|
| P.Real r -> J.Number (string_of_float r)
|
|
| P.String s -> J.String s
|
|
| P.Name n -> J.String n
|
|
| P.Array objs -> J.Array (List.map (json_of_object fcs) objs)
|
|
| P.Dictionary elts ->
|
|
(* Detect contents stream object numbers for second pass *)
|
|
List.iter (function ("/Contents", P.Indirect i) -> fcs i | _ -> ()) elts;
|
|
J.Object (List.map (fun (k, v) -> (k, json_of_object fcs v)) elts)
|
|
| P.Stream {contents = (Pdf.Dictionary dict, stream)} as thestream ->
|
|
Pdf.getstream thestream;
|
|
let str = match stream with Got b -> Pdfio.string_of_bytes b | ToGet _ -> "failure: toget" in
|
|
json_of_object fcs (P.Array [P.Dictionary dict; P.String str])
|
|
| P.Stream _ -> J.String "error: stream with not-a-dictioary"
|
|
| P.Indirect i -> J.Number (string_of_int i)
|
|
|
|
let json_of_op = function
|
|
| O.Op_w w -> J.Array [J.String "w"]
|
|
| O.Op_J j -> J.Array [J.String "J"]
|
|
| O.Op_j j -> J.Array [J.String "j"]
|
|
| O.Op_M m -> J.Array [J.String "m"]
|
|
| O.Op_d (fl, y) ->J.Array [J.String "d"]
|
|
| O.Op_ri s -> J.Array [J.String "ri"]
|
|
| O.Op_i i -> J.Array [J.String "i"]
|
|
| O.Op_gs s -> J.Array [J.String "gs"]
|
|
| O.Op_q -> J.Array [J.String "q"]
|
|
| O.Op_Q -> J.Array [J.String "Q"]
|
|
| O.Op_cm t ->J.Array [J.String "cm"]
|
|
| O.Op_m (a, b) ->J.Array [J.String "m"]
|
|
| O.Op_l (a, b) ->J.Array [J.String "l"]
|
|
| O.Op_c (a, b, c, d, e, k) ->J.Array [J.String "c"]
|
|
| O.Op_v (a, b, c, d) ->J.Array [J.String "v"]
|
|
| O.Op_y (a, b, c, d) -> J.Array [J.String "y"]
|
|
| O.Op_h -> J.Array [J.String "h"]
|
|
| O.Op_re (a, b, c, d) -> J.Array [J.String "re"]
|
|
| O.Op_S -> J.Array [J.String "S"]
|
|
| O.Op_s -> J.Array [J.String "s"]
|
|
| O.Op_f -> J.Array [J.String "f"]
|
|
| O.Op_F -> J.Array [J.String "F"]
|
|
| O.Op_f' ->J.Array [J.String "f'"]
|
|
| 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 "b'"]
|
|
| O.Op_n -> J.Array [J.String "n"]
|
|
| O.Op_W -> J.Array [J.String "W"]
|
|
| O.Op_W' -> J.Array [J.String "W'"]
|
|
| O.Op_BT -> J.Array [J.String "BT"]
|
|
| O.Op_ET -> J.Array [J.String "ET"]
|
|
| O.Op_Tc c ->J.Array [J.String "Tc"]
|
|
| O.Op_Tw w -> J.Array [J.String "Tw"]
|
|
| O.Op_Tz z -> J.Array [J.String "Tz"]
|
|
| O.Op_TL l -> J.Array [J.String "TL"]
|
|
| O.Op_Tf (k, s) ->J.Array [J.String "Tf"]
|
|
| O.Op_Tr i -> J.Array [J.String "Tr"]
|
|
| O.Op_Ts k -> J.Array [J.String "Ts"]
|
|
| O.Op_Td (k, k') ->J.Array [J.String "Td"]
|
|
| O.Op_TD (k, k') ->J.Array [J.String "TD"]
|
|
| O.Op_Tm t ->J.Array [J.String "Tm"]
|
|
| O.Op_T' -> J.Array [J.String "T'"]
|
|
| O.Op_Tj s -> J.Array [J.String "Tj"]
|
|
| O.Op_TJ pdfobject -> J.Array [J.String "TJ"]
|
|
| O.Op_' s -> J.Array [J.String "'"]
|
|
| O.Op_'' (k, k', s) -> J.Array [J.String "''"]
|
|
| O.Op_d0 (k, k') ->J.Array [J.String "d0"]
|
|
| O.Op_d1 (a, b, c, d, e, k) ->J.Array [J.String "d1"]
|
|
| O.Op_CS s -> J.Array [J.String "CS"]
|
|
| O.Op_cs s -> J.Array [J.String "cs"]
|
|
| O.Op_SC fs -> J.Array [J.String "SC"]
|
|
| O.Op_sc fs -> J.Array [J.String "sc"]
|
|
| O.Op_SCN fs -> J.Array [J.String "SCN"]
|
|
| O.Op_scn fs -> J.Array [J.String "scn"]
|
|
| O.Op_SCNName (s, fs) ->J.Array [J.String "SCNName"]
|
|
| O.Op_scnName (s, fs) ->J.Array [J.String "scnName"]
|
|
| O.Op_G k -> J.Array [J.String "G"]
|
|
| O.Op_g k -> J.Array [J.String "g"]
|
|
| O.Op_RG (r, g, b) ->J.Array [J.String "RG"]
|
|
| O.Op_rg (r, g, b) ->J.Array [J.String "rg"]
|
|
| O.Op_K (c, m, y, k) ->J.Array [J.String "K"]
|
|
| O.Op_k (c, m, y, k) ->J.Array [J.String "k"]
|
|
| O.Op_sh s -> J.Array [J.String "sh"]
|
|
| O.InlineImage (dict, data) -> J.Array [J.String "InlineImage"]
|
|
| O.Op_Do s -> J.Array [J.String "Do"]
|
|
| O.Op_MP s -> J.Array [J.String "MP"]
|
|
| O.Op_DP (s, obj) ->J.Array [J.String "DP"]
|
|
| O.Op_BMC s -> J.Array [J.String "BMC"]
|
|
| O.Op_BDC (s, obj) ->J.Array [J.String "BDC"]
|
|
| O.Op_EMC -> J.Array [J.String "EMC"]
|
|
| O.Op_BX -> J.Array [J.String "BX"]
|
|
| O.Op_EX ->J.Array [J.String "EX"]
|
|
| O.Op_Unknown _ ->J.Array [J.String "Unknown"]
|
|
|
|
let parse_content_stream str =
|
|
let ops = Pdfops.parse_stream (Pdf.empty ()) (Pdf.Dictionary []) [Pdfio.bytes_of_string str] in
|
|
J.Array (List.map json_of_op ops)
|
|
|
|
let json_of_pdf parse_content pdf =
|
|
let trailerdict = (0, json_of_object (fun x -> ()) pdf.Pdf.trailerdict) in
|
|
let content_streams = ref [] in
|
|
let pairs =
|
|
let ps = ref [] in
|
|
Pdf.objiter
|
|
(fun i pdfobj ->
|
|
ps := (i, json_of_object (fun n -> content_streams := n::!content_streams) pdfobj)::!ps)
|
|
pdf;
|
|
trailerdict::!ps
|
|
in
|
|
let pairs_parsed =
|
|
if not parse_content then pairs else
|
|
List.map
|
|
(fun (objnum, obj) ->
|
|
if Pdfutil.mem objnum !content_streams then
|
|
begin match obj with
|
|
| J.Array [dict; J.String streamdata] ->
|
|
(objnum, J.Array [dict; parse_content_stream streamdata])
|
|
| _ -> failwith "json_of_pdf: stream parsing inconsistency"
|
|
end
|
|
else
|
|
(objnum, obj))
|
|
pairs
|
|
in
|
|
J.Array
|
|
(List.map
|
|
(fun (objnum, jsonobj) -> J.Array [J.String (string_of_int objnum); jsonobj])
|
|
pairs_parsed)
|
|
|
|
let write fh parse_content pdf =
|
|
let b = Buffer.create 256 in
|
|
let formatter = Format.formatter_of_buffer b in
|
|
Tjjson.format formatter (json_of_pdf parse_content pdf);
|
|
Format.pp_print_flush formatter ();
|
|
output_string fh (Buffer.contents b)
|
|
|
|
|