(* UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE

Unicode Data Files include all data files under the directories
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http://www.unicode.org/cldr/data/. Unicode Data Files do not include PDF online
code charts under the directory http://www.unicode.org/Public/. Software
includes any source code published in the Unicode Standard or under the
directories http://www.unicode.org/Public/, http://www.unicode.org/reports/,
and http://www.unicode.org/cldr/data/.

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Copyright © 1991-2015 Unicode, Inc. All rights reserved. Distributed under the
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the Unicode data files and any associated documentation (the "Data Files") or
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of the Data Files or Software, and to permit persons to whom the Data Files or
Software are furnished to do so, provided that

(a) this copyright and permission notice appear with all copies of the Data
Files or Software, (b) this copyright and permission notice appear in
associated documentation, and (c) there is clear notice in each modified Data
File or in the Software as well as in the documentation associated with the
Data File(s) or Software that the data or software has been modified.  THE DATA
FILES AND SOFTWARE ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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CONNECTION WITH THE USE OR PERFORMANCE OF THE DATA FILES OR SOFTWARE.

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open Pdfutil

let unicodedata_source = __DATA:UnicodeData.txt

type t =
  {code_value : string;
   character_name : string;
   general_category : string;
   canonical_combining_classes : string;
   bidirectional_category : string;
   character_decomposition_mapping : string;
   decimal_digit_value : string;
   digit_value : string;
   numeric_value : string;
   mirrored : string;
   unicode_10_name : string;
   iso_10646_comment_field : string;
   uppercase_mapping : string;
   lowercase_mapping : string;
   titlecase_mapping : string}

let get_single_field i =
  let r = implode (Pdfread.getuntil true (function c -> c = ';' || c = '\n') i) in
    Pdfio.nudge i;
    r

let parse_entry i =
  let code_value = get_single_field i in
  let character_name = get_single_field i in
  let general_category = get_single_field i in
  let canonical_combining_classes = get_single_field i in
  let bidirectional_category = get_single_field i in
  let character_decomposition_mapping = get_single_field i in
  let decimal_digit_value = get_single_field i in
  let digit_value = get_single_field i in
  let numeric_value = get_single_field i in
  let mirrored = get_single_field i in
  let unicode_10_name = get_single_field i in
  let iso_10646_comment_field = get_single_field i in
  let uppercase_mapping = get_single_field i in
  let lowercase_mapping = get_single_field i in
  let titlecase_mapping = get_single_field i in
    {code_value;
     character_name;
     general_category;
     canonical_combining_classes;
     bidirectional_category;
     character_decomposition_mapping;
     decimal_digit_value;
     digit_value;
     numeric_value;
     mirrored;
     unicode_10_name;
     iso_10646_comment_field;
     uppercase_mapping;
     lowercase_mapping;
     titlecase_mapping}

let rec parse_unicodedata a i =
  if i.Pdfio.pos_in () = i.Pdfio.in_channel_length + 2 (* it's been nudged *)
    then rev a
    else parse_unicodedata (parse_entry i::a) i

let print_entry e =
  Printf.printf
    "{{%s;%s;%s;%s;%s;%s;%s;%s;%s;%s;%s;%s;%s;%s;%s}}\n"
    e.code_value
    e.character_name
    e.general_category
    e.canonical_combining_classes
    e.bidirectional_category
    e.character_decomposition_mapping
    e.decimal_digit_value
    e.digit_value
    e.numeric_value
    e.mirrored
    e.unicode_10_name
    e.iso_10646_comment_field
    e.uppercase_mapping
    e.lowercase_mapping
    e.titlecase_mapping

let unicodedata =
  memoize
    (fun () ->
       let r = 
          unicodedata_source
       |> Pdfio.bytes_of_string
       |> Pdfcodec.decode_flate
       |> Pdfio.string_of_bytes
       |> Pdfio.input_of_string
       |> parse_unicodedata []
       in (*iter print_entry r;*) r)