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\ProvidesExplPackage {tagpdf-roles-code} {2019/07/02} {0.61}
 {part of tagpdf - code related to roles and structure names}

\__uftag_seq_new:N     \g__uftag_role_tags_seq  %to get names from numbers
\__uftag_prop_new:N    \g__uftag_role_tags_prop %to get numbers from names

%The list of standard adobe tags.
\clist_const:Nn \c__uftag_role_sttags_clist
 {%possible root elements
  Document,   %A complete document. This is the root element of any structure tree containing
              %multiple parts or multiple articles.
  Part,       %A large-scale division of a document.
  Art,        %A relatively self-contained body of text constituting a single narrative or exposition
  %subelements
  Sect,       %A container for grouping related content elements.
  Div,        %A generic block-level element or group of elements
  BlockQuote, %A portion of text consisting of one or more paragraphs attributed to someone other
              %than the author of the  surrounding text.
  Caption,    %A brief portion of text describing a table or figure.
  TOC,        %A list made up of table of contents item entries (structure tag TOCI; see below)
              %and/or other nested table of contents entries
  TOCI,       %An individual member of a table of contents. This entry's children can be any of
              %the following structure  tags:
              %Lbl,Reference,NonStruct,P,TOC
  Index,
  NonStruct,  %probably not needed
  H,
  H1,
  H2,
  H3,
  H4,
  H5,
  H6,
  P,
  L,           %list
  LI,          %list item (around label and list item body)
  Lbl,         %list label
  LBody,       %list item body
  Table,
  TR,          %table row
  TH,          %table header cell
  TD,          %table data cell
  THead,       %table header (n rows)
  TBody,       %table rows
  TFoot,       %table footer
  Span,        %generic inline marker
  Quote,       %inline quote
  Note,        % footnote, endnote. Lbl can be child
  Reference,   % A citation to content elsewhere in the document.
  BibEntry,    %bibentry
  Code,        %
  Link,        %
  Annot,
  Figure,
  Formula,
  Form,
  Artifact
 }

% get tag name from number: \seq_item:Nn \g__uftag_role_tags_seq { n }
%\seq_gset_from_clist:NN \g__uftag_role_tags_seq \c__uftag_role_tags_clist

\clist_map_inline:Nn \c__uftag_role_sttags_clist
 {
  \__uftag_seq_gput_right:Nn \g__uftag_role_tags_seq { #1 }
 }


% get tag number from name: \prop_item:Nn \g__uftag_role_tags_prop { name }
\int_step_inline:nnnn { 1 }{ 1 }{ \seq_count:N \g__uftag_role_tags_seq }
 {
  \__uftag_prop_gput:Nxn \g__uftag_role_tags_prop
   {
    \seq_item:Nn \g__uftag_role_tags_seq  { #1 }
   }
   { #1 }
 }

\cs_new:Nn \__uftag_role_get_tag_from_index:nn
 {
  \__uftag_seq_item:cn { #1_seq } { #2 }
 }

\cs_new:Nn \__uftag_role_get_index_from_tag:nn
 {
  \__uftag_prop_item:cn { #1_prop } { #2 }
 }

% new tags and the rolemap

\__uftag_prop_new:N \g__uftag_role_rolemap_prop

\cs_new:Nn \__uftag_role_add_tag:nn %new name, reference to old
 {
  \__uftag_seq_gput_right:Nn \g__uftag_role_tags_seq { #1 }
  \__uftag_prop_gput:Nnx \g__uftag_role_tags_prop    { #1 }
   {
    \seq_count:N \g__uftag_role_tags_seq
   }
  \__uftag_check_add_tag_role:nn {#1}{#2}
  \tl_if_empty:nF { #2 }
   {
    \__uftag_prop_gput:Nnn \g__uftag_role_rolemap_prop
     { #1 } { #2 }
   }
 }

\cs_generate_variant:Nn \__uftag_role_add_tag:nn {xx}

\keys_define:nn { uftag / setup }
 {
  add-new-tag .code:n =
   {
    \seq_set_split:Nnn \l_tmpa_seq { / } {#1/}
    \__uftag_role_add_tag:xx
     {
      \seq_item:Nn \l_tmpa_seq {1}
     }
     {
      \seq_item:Nn \l_tmpa_seq {2}
     }
   }
 }


\endinput