429 lines
18 KiB
OCaml
429 lines
18 KiB
OCaml
open Pdfutil
|
|
open Cpdferror
|
|
|
|
module J = Cpdfyojson.Safe
|
|
module P = Pdf
|
|
module O = Pdfops
|
|
|
|
let opf = function
|
|
| `Assoc ["F", `Float f] -> f
|
|
| `Assoc ["F", `Int i] -> float_of_int i
|
|
| _ -> error "num: not a float"
|
|
|
|
let opi = function
|
|
| `Assoc ["I", `Int i] -> i
|
|
| `Assoc ["I", `Float f] -> int_of_float f
|
|
| _ -> error "num: not an integer"
|
|
|
|
let rec op_of_json = function
|
|
| `List [`String "S"] -> O.Op_S
|
|
| `List [`String "s"] -> O.Op_s
|
|
| `List [`String "f"] -> O.Op_f
|
|
| `List [`String "F"] -> O.Op_F
|
|
| `List [`String "f*"] -> O.Op_f'
|
|
| `List [`String "B"] -> O.Op_B
|
|
| `List [`String "B*"] -> O.Op_B'
|
|
| `List [`String "b"] -> O.Op_b
|
|
| `List [`String "b*"] -> O.Op_b'
|
|
| `List [`String "n"] -> O.Op_n
|
|
| `List [`String "W"] -> O.Op_W
|
|
| `List [`String "W*"] -> O.Op_W'
|
|
| `List [`String "BT"] -> O.Op_BT
|
|
| `List [`String "ET"] -> O.Op_ET
|
|
| `List [`String "q"] -> O.Op_q
|
|
| `List [`String "Q"] -> O.Op_Q
|
|
| `List [`String "h"] -> O.Op_h
|
|
| `List [`String "T*"] -> O.Op_T'
|
|
| `List [`String "EMC"] -> O.Op_EMC
|
|
| `List [`String "BX"] -> O.Op_BX
|
|
| `List [`String "EX"] -> O.Op_EX
|
|
| `List [a; b; c; d; `String "re"] -> O.Op_re (opf a, opf b, opf c, opf d)
|
|
| `List [a; b; c; d; `String "k"] -> O.Op_k (opf a, opf b, opf c, opf d)
|
|
| `List [a; b; `String "m"] -> O.Op_m (opf a, opf b)
|
|
| `List [a; b; `String "l"] -> O.Op_l (opf a, opf b)
|
|
| `List [`String s; obj; `String "BDC"] -> O.Op_BDC (s, object_of_json obj)
|
|
| `List [`String s; `String "gs"] -> O.Op_gs s
|
|
| `List [`String s; `String "Do"] -> O.Op_Do s
|
|
| `List [`String s; `String "CS"] -> O.Op_CS s
|
|
| `List [i; `String "j"] -> O.Op_j (opi i)
|
|
| `List [a; b; c; d; e; f; `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}
|
|
| `List [`List fls; y; `String "d"] -> O.Op_d (map opf fls, opf y)
|
|
| `List [a; `String "w"] -> O.Op_w (opf a)
|
|
| `List [a; `String "J"] -> O.Op_J (opi a)
|
|
| `List [a; `String "M"] -> O.Op_M (opf a)
|
|
| `List [`String s; `String "ri"] -> O.Op_ri s
|
|
| `List [a; `String "i"] -> O.Op_i (opi a)
|
|
| `List [a; b; c; d; e; f; `String "c"] -> O.Op_c (opf a, opf b, opf c, opf d, opf e, opf f)
|
|
| `List [a; b; c; d; `String "v"] -> O.Op_v (opf a, opf b, opf c, opf d)
|
|
| `List [a; b; c; d; `String "y"] -> O.Op_y (opf a, opf b, opf c, opf d)
|
|
| `List [a; `String "Tc"] -> O.Op_Tc (opf a)
|
|
| `List [a; `String "Tw"] -> O.Op_Tw (opf a)
|
|
| `List [a; `String "Tz"] -> O.Op_Tz (opf a)
|
|
| `List [a; `String "TL"] -> O.Op_TL (opf a)
|
|
| `List [`String k; n; `String "Tf"] -> O.Op_Tf (k, opf n)
|
|
| `List [a; `String "Tr"] -> O.Op_Tr (opi a)
|
|
| `List [a; `String "Ts"] -> O.Op_Ts (opf a)
|
|
| `List [a; b; `String "Td"] -> O.Op_Td (opf a, opf b)
|
|
| `List [a; b; `String "TD"] -> O.Op_TD (opf a, opf b)
|
|
| `List [a; b; c; d; e; f; `String "Tm"] ->
|
|
O.Op_Tm
|
|
{Pdftransform.a = opf a; Pdftransform.b = opf b; Pdftransform.c = opf c;
|
|
Pdftransform.d = opf d; Pdftransform.e = opf e; Pdftransform.f = opf f}
|
|
| `List [`String s; `String "Tj"] -> Op_Tj s
|
|
| `List [obj; `String "TJ"] -> Op_TJ (object_of_json obj)
|
|
| `List [`String s; `String "'"] -> Op_' s
|
|
| `List [a; b; `String s; `String "''"] -> Op_'' (opf a, opf b, s)
|
|
| `List [a; b; `String "d0"] -> Op_d0 (opf a, opf b)
|
|
| `List [a; b; c; d; e; f; `String "d1"] -> Op_d1 (opf a, opf b, opf c, opf d, opf e, opf f)
|
|
| `List [`String s; `String "cs"] -> Op_cs s
|
|
| `List [a; `String "G"] -> Op_G (opf a);
|
|
| `List [a; `String "g"] -> Op_g (opf a);
|
|
| `List [a; b; c; `String "RG"] -> Op_RG (opf a, opf b, opf c);
|
|
| `List [a; b; c; `String "rg"] -> Op_rg (opf a, opf b, opf c);
|
|
| `List [a; b; c; d; `String "K"] -> Op_K (opf a, opf b, opf c, opf d);
|
|
| `List [`String s; `String "sh"] -> Op_sh s;
|
|
| `List [`String s; `String "MP"] -> Op_MP s;
|
|
| `List [`String s; `String "BMC"] -> Op_BMC s;
|
|
| `List [`String s; `String "Unknown"] -> O.Op_Unknown s
|
|
| `List [`String s; obj; `String "DP"] -> O.Op_DP (s, object_of_json obj)
|
|
| `List [a; `String b; `String "InlineImage"] ->
|
|
O.InlineImage (object_of_json a, Pdfio.bytes_of_string b)
|
|
| `List torev ->
|
|
begin match rev torev with
|
|
| `String "SCN"::ns -> O.Op_SCN (map opf (rev ns))
|
|
| `String "SC"::ns -> O.Op_SCN (map opf (rev ns))
|
|
| `String "sc"::ns -> O.Op_SCN (map opf (rev ns))
|
|
| `String "scn"::ns -> O.Op_SCN (map opf (rev ns))
|
|
| `String "SCNName"::`String s::ns -> O.Op_SCNName (s, map opf (rev ns))
|
|
| `String "scnName"::`String s::ns -> O.Op_scnName (s, map opf (rev ns))
|
|
| j ->
|
|
Printf.eprintf "Unable to read reversed op from %s\n" (J.show (`List j));
|
|
error "op reading failed"
|
|
end
|
|
| j ->
|
|
Printf.eprintf "Unable to read op from %s\n" (J.show j);
|
|
error "op reading failed"
|
|
|
|
and object_of_json = function
|
|
| `Null -> P.Null
|
|
| `Bool b -> P.Boolean b
|
|
| `Int n -> Pdf.Indirect n
|
|
| `String s -> P.String s
|
|
| `List objs -> P.Array (map object_of_json objs)
|
|
| `Assoc ["I", `Int i] -> P.Integer i
|
|
| `Assoc ["F", `Float f] -> P.Real f
|
|
| `Assoc ["N", `String n] -> P.Name n
|
|
| `Assoc ["S", `List [dict; `String data]] ->
|
|
let d' =
|
|
P.add_dict_entry (object_of_json dict) "/Length" (P.Integer (String.length data))
|
|
in
|
|
P.Stream (ref (d', P.Got (Pdfio.bytes_of_string data)))
|
|
| `Assoc ["S", `List [dict; `List parsed_ops]] ->
|
|
Pdfops.stream_of_ops (List.map op_of_json parsed_ops)
|
|
| `Assoc elts -> P.Dictionary (map (fun (n, o) -> (n, object_of_json o)) elts)
|
|
| _ -> error "not recognised in object_of_json"
|
|
|
|
let pdf_of_json json =
|
|
let objs = match json with `List objs -> objs | _ -> error "bad json top level" in
|
|
let params = ref Pdf.Null in
|
|
let trailerdict = ref Pdf.Null in
|
|
let objects =
|
|
option_map
|
|
(function
|
|
| `List [`Int objnum; o] ->
|
|
begin match objnum with
|
|
| -1 -> params := object_of_json o; None
|
|
| 0 -> trailerdict := object_of_json o; None
|
|
| n when n < 0 -> None
|
|
| n -> Some (n, object_of_json o)
|
|
end
|
|
| _ -> error "json bad obj")
|
|
objs
|
|
in
|
|
begin match Pdf.lookup_direct (Pdf.empty ()) "/CPDFJSONstreamdataincluded" !params with
|
|
| Some (Pdf.Boolean false) -> error "no stream data; cannot reconstruct PDF"
|
|
| _ -> ()
|
|
end;
|
|
let major =
|
|
match Pdf.lookup_direct (Pdf.empty ()) "/CPDFJSONmajorpdfversion" !params with
|
|
Some (Pdf.Integer i) -> i | _ -> error "bad major version"
|
|
in
|
|
let minor =
|
|
match Pdf.lookup_direct (Pdf.empty ()) "/CPDFJSONminorpdfversion" !params with
|
|
Some (Pdf.Integer i) -> i | _ -> error "bad minor version"
|
|
in
|
|
let root =
|
|
match !trailerdict with Pdf.Dictionary d ->
|
|
begin match lookup "/Root" d with
|
|
Some (Pdf.Indirect i) -> i | _ -> error "bad root"
|
|
end
|
|
| _ -> error "bad root 2"
|
|
in
|
|
let objmap = P.pdfobjmap_empty () in
|
|
List.iter (fun (k, v) -> Hashtbl.add objmap k (ref (P.Parsed v), 0)) objects;
|
|
let objects =
|
|
{P.maxobjnum = 0;
|
|
P.parse = None;
|
|
P.pdfobjects = objmap;
|
|
P.object_stream_ids = Hashtbl.create 0}
|
|
in
|
|
{P.major;
|
|
P.minor;
|
|
P.root;
|
|
P.objects;
|
|
P.trailerdict = !trailerdict;
|
|
P.was_linearized = false;
|
|
P.saved_encryption = None}
|
|
|
|
let mkfloat f = `Assoc [("F", `Float f)]
|
|
let mkint i = `Assoc [("I", `Int i)]
|
|
let mkname n = `Assoc [("N", `String n)]
|
|
|
|
let rec json_of_object pdf fcs no_stream_data pcs = function
|
|
| P.Null -> `Null
|
|
| P.Boolean b -> `Bool b
|
|
| P.Integer i -> mkint i
|
|
| P.Real r -> mkfloat r
|
|
| P.String s -> `String s
|
|
| P.Name n -> mkname n
|
|
| P.Array objs -> `List (map (json_of_object pdf fcs no_stream_data pcs) objs)
|
|
| P.Dictionary elts ->
|
|
iter
|
|
(function
|
|
("/Contents", P.Indirect i) ->
|
|
begin match Pdf.lookup_obj pdf i with
|
|
| Pdf.Array is -> iter (function Pdf.Indirect i -> fcs i | _ -> ()) is
|
|
| _ -> fcs i
|
|
end
|
|
| ("/Contents", P.Array elts) -> iter (function P.Indirect i -> fcs i | _ -> ()) elts
|
|
| _ -> ())
|
|
elts;
|
|
`Assoc (map (fun (k, v) -> (k, json_of_object pdf fcs no_stream_data pcs v)) elts)
|
|
| P.Stream ({contents = (P.Dictionary dict as d, stream)} as mut) as thestream ->
|
|
P.getstream thestream;
|
|
let str =
|
|
match P.lookup_direct pdf "/FunctionType" d, pcs with
|
|
| Some _, true ->
|
|
Pdfcodec.decode_pdfstream_until_unknown pdf thestream;
|
|
begin match !mut with (_, P.Got b) -> Pdfio.string_of_bytes b | _ -> error "/FunctionType: failure: decomp" end
|
|
| _ ->
|
|
if no_stream_data then "<<stream data elided>>" else
|
|
match !mut with (_, P.Got b) -> Pdfio.string_of_bytes b | _ -> error "failure: toget"
|
|
in
|
|
json_of_object pdf fcs no_stream_data pcs (P.Dictionary [("S", P.Array [P.Dictionary dict; P.String str])])
|
|
| P.Stream _ -> error "error: stream with not-a-dictionary"
|
|
| P.Indirect i ->
|
|
begin match P.lookup_obj pdf i with
|
|
| P.Stream {contents = (P.Dictionary dict as d, _)} ->
|
|
begin match P.lookup_direct pdf "/Subtype" d with
|
|
| Some (P.Name "/Form") -> fcs i
|
|
| _ -> ()
|
|
end
|
|
| _ -> ()
|
|
end;
|
|
`Int i
|
|
|
|
let json_of_op pdf no_stream_data = function
|
|
| O.Op_S -> `List [`String "S"]
|
|
| O.Op_s -> `List [`String "s"]
|
|
| O.Op_f -> `List [`String "f"]
|
|
| O.Op_F -> `List [`String "F"]
|
|
| O.Op_f' ->`List [`String "f*"]
|
|
| O.Op_B -> `List [`String "B"]
|
|
| O.Op_B' -> `List [`String "B*"]
|
|
| O.Op_b -> `List [`String "b"]
|
|
| O.Op_b' -> `List [`String "b*"]
|
|
| O.Op_n -> `List [`String "n"]
|
|
| O.Op_W -> `List [`String "W"]
|
|
| O.Op_W' -> `List [`String "W*"]
|
|
| O.Op_BT -> `List [`String "BT"]
|
|
| O.Op_ET -> `List [`String "ET"]
|
|
| O.Op_q -> `List [`String "q"]
|
|
| O.Op_Q -> `List [`String "Q"]
|
|
| O.Op_h -> `List [`String "h"]
|
|
| O.Op_T' -> `List [`String "T*"]
|
|
| O.Op_EMC -> `List [`String "EMC"]
|
|
| O.Op_BX -> `List [`String "BX"]
|
|
| O.Op_EX -> `List [`String "EX"]
|
|
| O.Op_re (a, b, c, d) ->
|
|
`List [mkfloat a; mkfloat b; mkfloat c; mkfloat d; `String "re"]
|
|
| O.Op_k (c, m, y, k) ->
|
|
`List [mkfloat c; mkfloat m; mkfloat y; mkfloat k; `String "k"]
|
|
| O.Op_m (a, b) -> `List [mkfloat a; mkfloat b; `String "m"]
|
|
| O.Op_l (a, b) -> `List [mkfloat a; mkfloat b; `String "l"]
|
|
| O.Op_BDC (s, obj) -> `List [`String s; json_of_object pdf (fun _ -> ()) no_stream_data false obj; `String "BDC"]
|
|
| O.Op_gs s -> `List [`String s; `String "gs"]
|
|
| O.Op_Do s -> `List [`String s; `String "Do"]
|
|
| O.Op_CS s -> `List [`String s; `String "CS"]
|
|
| O.Op_SCN fs -> `List ((map (fun x -> mkfloat x) fs) @ [`String "SCN"])
|
|
| O.Op_j j -> `List [mkint j; `String "j"]
|
|
| O.Op_cm t ->
|
|
`List
|
|
[mkfloat t.Pdftransform.a; mkfloat t.Pdftransform.b; mkfloat t.Pdftransform.c;
|
|
mkfloat t.Pdftransform.d; mkfloat t.Pdftransform.e; mkfloat t.Pdftransform.f;
|
|
`String "cm"]
|
|
| O.Op_d (fl, y) ->
|
|
`List [`List (map (fun x -> mkfloat x) fl); mkfloat y; `String "d"]
|
|
| O.Op_w w -> `List [mkfloat w; `String "w"]
|
|
| O.Op_J j -> `List [mkint j; `String "J"]
|
|
| O.Op_M m -> `List [mkfloat m; `String "M"]
|
|
| O.Op_ri s -> `List [`String s; `String "ri"]
|
|
| O.Op_i i -> `List [mkint i; `String "i"]
|
|
| O.Op_c (a, b, c, d, e, k) ->
|
|
`List
|
|
[mkfloat a; mkfloat b; mkfloat c;
|
|
mkfloat d; mkfloat e; mkfloat k; `String "c"]
|
|
| O.Op_v (a, b, c, d) ->
|
|
`List
|
|
[mkfloat a; mkfloat b; mkfloat c;
|
|
mkfloat d; `String "v"]
|
|
| O.Op_y (a, b, c, d) ->
|
|
`List
|
|
[mkfloat a; mkfloat b; mkfloat c;
|
|
mkfloat d; `String "y"]
|
|
| O.Op_Tc c -> `List [mkfloat c; `String "Tc"]
|
|
| O.Op_Tw w -> `List [mkfloat w; `String "Tw"]
|
|
| O.Op_Tz z -> `List [mkfloat z; `String "Tz"]
|
|
| O.Op_TL l -> `List [mkfloat l; `String "TL"]
|
|
| O.Op_Tf (k, s) -> `List [`String k; mkfloat s; `String "Tf"]
|
|
| O.Op_Tr i -> `List [mkint i; `String "Tr"]
|
|
| O.Op_Ts k -> `List [mkfloat k; `String "Ts"]
|
|
| O.Op_Td (k, k') -> `List [mkfloat k; mkfloat k'; `String "Td"]
|
|
| O.Op_TD (k, k') -> `List [mkfloat k; mkfloat k'; `String "TD"]
|
|
| O.Op_Tm t ->
|
|
`List
|
|
[mkfloat t.Pdftransform.a; mkfloat t.Pdftransform.b; mkfloat t.Pdftransform.c;
|
|
mkfloat t.Pdftransform.d; mkfloat t.Pdftransform.e; mkfloat t.Pdftransform.f;
|
|
`String "Tm"]
|
|
| O.Op_Tj s -> `List [`String s; `String "Tj"]
|
|
| O.Op_TJ pdfobject -> `List [json_of_object pdf (fun _ -> ()) no_stream_data false pdfobject; `String "TJ"]
|
|
| O.Op_' s -> `List [`String s; `String "'"]
|
|
| O.Op_'' (k, k', s) -> `List [mkfloat k; mkfloat k'; `String s; `String "''"]
|
|
| O.Op_d0 (k, k') -> `List [mkfloat k; mkfloat k'; `String "d0"]
|
|
| O.Op_d1 (a, b, c, d, e, k) ->
|
|
`List
|
|
[mkfloat a; mkfloat b; mkfloat c;
|
|
mkfloat d; mkfloat e; mkfloat k; `String "d1"]
|
|
| O.Op_cs s -> `List [`String s; `String "cs"]
|
|
| O.Op_SC fs -> `List (map (fun x -> mkfloat x) fs @ [`String "SC"])
|
|
| O.Op_sc fs -> `List (map (fun x -> mkfloat x) fs @ [`String "sc"])
|
|
| O.Op_scn fs -> `List (map (fun x -> mkfloat x) fs @ [`String "scn"])
|
|
| O.Op_G k -> `List [mkfloat k; `String "G"]
|
|
| O.Op_g k -> `List [mkfloat k; `String "g"]
|
|
| O.Op_RG (r, g, b) -> `List [mkfloat r; mkfloat g; mkfloat b; `String "RG"]
|
|
| O.Op_rg (r, g, b) -> `List [mkfloat r; mkfloat g; mkfloat b; `String "rg"]
|
|
| O.Op_K (c, m, y, k) -> `List [mkfloat c; mkfloat m; mkfloat y; mkfloat k; `String "K"]
|
|
| O.Op_sh s -> `List [`String s; `String "sh"]
|
|
| O.Op_MP s -> `List [`String s; `String "MP"]
|
|
| O.Op_BMC s -> `List [`String s; `String "BMC"]
|
|
| O.Op_Unknown s -> `List [`String s; `String "Unknown"]
|
|
| O.Op_SCNName (s, fs) ->
|
|
`List (map (fun x -> mkfloat x) fs @ [`String s; `String "SCNName"])
|
|
| O.Op_scnName (s, fs) ->
|
|
`List (map (fun x -> mkfloat x) fs @ [`String s; `String "scnName"])
|
|
| O.InlineImage (dict, data) ->
|
|
`List [json_of_object pdf (fun _ -> ()) no_stream_data false dict; `String (Pdfio.string_of_bytes data); `String "InlineImage"]
|
|
| O.Op_DP (s, obj) ->
|
|
`List [`String s; json_of_object pdf (fun _ -> ()) no_stream_data false obj; `String "DP"]
|
|
|
|
(* parse_stream needs pdf and resources. These are for lexing of inline images,
|
|
* looking up the colourspace. We do not need to worry about inherited
|
|
* resources, though? For now, don't worry about inherited resources: check in
|
|
* PDF standard. *)
|
|
let parse_content_stream pdf resources bs =
|
|
let ops = O.parse_stream pdf resources [bs] in
|
|
`List (map (json_of_op pdf false) ops)
|
|
|
|
(* We need to make sure each page only has one page content stream. Otherwise,
|
|
if not split on op boundaries, each one would fail to parse on its own. The
|
|
caller should really only do this on otherwise-failing files, since it could
|
|
blow up any shared content streams *)
|
|
let do_precombine_page_content pdf =
|
|
let pages' =
|
|
map
|
|
(fun page ->
|
|
match page.Pdfpage.content with
|
|
[] | [_] -> page
|
|
| _ ->
|
|
let operators =
|
|
Pdfops.parse_operators pdf page.Pdfpage.resources page.Pdfpage.content
|
|
in
|
|
{page with Pdfpage.content = [Pdfops.stream_of_ops operators]}
|
|
)
|
|
(Pdfpage.pages_of_pagetree pdf)
|
|
in
|
|
Pdfpage.change_pages true pdf pages'
|
|
|
|
let json_of_pdf
|
|
~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content
|
|
pdf
|
|
=
|
|
let pdf = if parse_content && precombine_page_content then do_precombine_page_content pdf else pdf in
|
|
if decompress_streams then
|
|
Pdf.objiter (fun _ obj -> Pdfcodec.decode_pdfstream_until_unknown pdf obj) pdf;
|
|
Pdf.remove_unreferenced pdf;
|
|
let trailerdict = (0, json_of_object pdf (fun x -> ()) no_stream_data false pdf.P.trailerdict) in
|
|
let parameters =
|
|
(-1, json_of_object pdf (fun x -> ()) false false
|
|
(Pdf.Dictionary [("/CPDFJSONformatversion", Pdf.Integer 2);
|
|
("/CPDFJSONcontentparsed", Pdf.Boolean parse_content);
|
|
("/CPDFJSONstreamdataincluded", Pdf.Boolean (not no_stream_data));
|
|
("/CPDFJSONmajorpdfversion", Pdf.Integer pdf.Pdf.major);
|
|
("/CPDFJSONminorpdfversion", Pdf.Integer pdf.Pdf.minor);
|
|
]))
|
|
in
|
|
let content_streams = ref [] in
|
|
let fcs n =
|
|
content_streams := n::!content_streams;
|
|
if parse_content then Pdfcodec.decode_pdfstream_until_unknown pdf (P.lookup_obj pdf n)
|
|
in
|
|
let pairs =
|
|
let ps = ref [] in
|
|
P.objiter
|
|
(fun i pdfobj ->
|
|
ps := (i, json_of_object pdf fcs no_stream_data parse_content pdfobj)::!ps)
|
|
pdf;
|
|
parameters::trailerdict::!ps
|
|
in
|
|
let pairs_parsed =
|
|
if not parse_content then pairs else
|
|
map
|
|
(fun (objnum, obj) ->
|
|
if mem objnum !content_streams then
|
|
begin match obj with
|
|
| `Assoc ["S", `List [dict; `String _]] ->
|
|
(* FIXME Proper resources here for reasons explained above? *)
|
|
let streamdata =
|
|
match P.lookup_obj pdf objnum with
|
|
| P.Stream {contents = (_, P.Got b)} -> b
|
|
| _ -> error "JSON: stream not decoded"
|
|
in
|
|
(objnum, `Assoc ["S", `List [dict; parse_content_stream pdf (P.Dictionary []) streamdata]])
|
|
| _ -> error "json_of_pdf: stream parsing inconsistency"
|
|
end
|
|
else
|
|
(objnum, obj))
|
|
pairs
|
|
in
|
|
`List
|
|
(map
|
|
(fun (objnum, jsonobj) -> `List [`Int objnum; jsonobj])
|
|
pairs_parsed)
|
|
|
|
(* FIXME Proper streaming to output *)
|
|
let to_output o ~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content pdf =
|
|
let json = json_of_pdf ~parse_content ~no_stream_data ~decompress_streams ~precombine_page_content pdf in
|
|
o.Pdfio.output_string (J.pretty_to_string json)
|
|
|
|
(* FIXME Proper streaming to output / from input, rather than making a big string first. *)
|
|
let of_input i =
|
|
let content = Pdfio.string_of_bytes (Pdfio.bytes_of_input i 0 (i.Pdfio.in_channel_length)) in
|
|
let json =
|
|
try J.from_string content with
|
|
e -> error (Printexc.to_string e)
|
|
in
|
|
pdf_of_json json
|