/++
  default settings
+/
template SiSUregisters() {
  string[string][string] conf_aa() {
    auto conf_ = [
      "webserv": [
         "url_root"         : "",
         "path"             : "~/sdp_www" ,
         "images"           : "" ,
         "cgi"              : "/usr/local/lib/sdp-cgi"
      ],
      "webserv_cgi": [
         "host"             : "localhost",
         "base_path"        : "",
         "port"             : "8081",
         "user"             : "",
         "file_links"       : "www.sisudoc.org"
      ],
      "processing": [
         "path"             : "~",
         "dir"              : "_sisu_processing",
         "concord_max"      : "400000"
      ],
      "flag": [
         "act0"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --xhtml --xml-sax --xml-dom --sqlite --manifest --verbose",
         "act1"             : "--digest --text --html --manifest",
         "act2"             : "--digest --text --html --epub --pdf --manifest",
         "act3"             : "--digest --qrcode --text --html --epub --concordance --pdf --manifest",
         "act4"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --manifest",
         "act5"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --sqlite --manifest",
         "act6"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --xhtml --xml-sax --xml-dom --sqlite --manifest",
         "act7"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --xhtml --xml-sax --xml-dom --sqlite --source --sisupod --manifest",
         "act8"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --xhtml --xml-sax --xml-dom --pg --update --manifest",
         "act9"             : "--digest --qrcode --text --html --epub --concordance --pdf --odf --docbook --xhtml --xml-sax --xml-dom --pg --update --source --sisupod --manifest"
      ],
      "default": [
         "papersize"        : "a4,letter",
         "text_wrap"        : "78",
         "emphasis"         : "bold",
         "language"         : "en",
         "digest"           : "sha256"
      ],
      "permission": [
         "share_source"     : ""
       ],
      "program_select": [
         "editor"           : "vim",
         "epub_viewer"      : "ebook-viewer",
         "html_viewer"      : "xombrero",
         "odf_viewer"       : "lowriter",
         "pdf_viewer"       : "evince",
         "xml_viewer"       : "xml-viewer"
      ],
      "search": [
         "flag"             : "",
         "action"           : "",
         "db"               : "",
         "title"            : ""
      ]
    ];
    return conf_;
  }
  string[string][string] make_aa() {
    auto make_ = [
      "make": [
        "bold"              : "",
        "breaks"            : "",
        "cover_image"       : "",
        "css"               : "",
        "emphasis"          : "",
        "footer"            : "",
        "headings"          : "",
        "home_button_image" : "",
        "home_button_text"  : "",
        "italics"           : "",
        "num_top"           : "",
        "num_depth"         : "",
        "substitute"        : "",
        "texpdf_font"       : ""
      ]
    ];
    return make_;
  }
  string[string][string] meta_aa() {
    auto meta_ = [
      "classify": [
        "dewey"             : "",
        "keywords"          : "",
        "loc"               : "",
        "subject"           : "",
        "topic_register"    : ""
      ],
      "creator": [
        "author"            : "",
        "author_email"      : "",
        "illustrator"       : "",
        "translator"        : ""
      ],
      "date": [
        "added_to_site"     : "",
        "available"         : "",
        "created"           : "",
        "issued"            : "",
        "modified"          : "",
        "published"         : "",
        "valid"             : ""
      ],
      "identifier": [
        "isbn"              : "",
        "oclc"              : "",
        "pg"                : ""
      ],
      "links": [
        "link"              : ""
      ],
      "notes": [
        "abstract"          : "",
        "description"       : ""
      ],
      "original": [
        "language"          : "",
        "source"            : "",
        "title"             : ""
      ],
      "publisher": [
        "name"              : ""
      ],
      "rights": [
        "copyright"         : "",
        "cover"             : "",
        "illustrations"     : "",
        "license"           : ""
      ],
      "title": [
        "edition"           : "",
        "full"              : "",
        "language"          : "",
        "main"              : "",
        "note"              : "",
        "sub"               : "",
        "subtitle"          : ""
      ]
    ];
    return meta_;
  }
  auto pointer_head_main =
    [
      "classify",
      "creator",
      "date",
      "identifier",
      "links",
      "make",             /+ make +/
      "original",
      "notes",
      "rights",
      "title"
    ];
  auto pointer_head_sub_classify =
    [
      "dewey",
      "keywords",
      "loc",
      "subject",
      "topic_register"
    ];
  auto pointer_head_sub_creator =
    [
      "author",
      "author_email",
      "cover",
      "illustrator",
      "translator"
    ];
  auto pointer_head_sub_date =
    [
      "added_to_site",
      "available",
      "created",
      "issued",
      "modified",
      "published",
      "valid"
    ];
  auto pointer_head_sub_identifier =
    [
      "isbn",
      "oclc",
      "pg"
    ];
  /+ make +/
  auto pointer_head_sub_make =
    [
      "cover_image",
      "home_button_image",
      "home_button_text",
      "footer", "headings",
      "num_top", "num_depth",
      "breaks",
      "substitute",
      "bold",
      "italics",
      "emphasis",
      "texpdf_font",
      "css"
    ];
  auto pointer_head_sub_notes =
    [
      "abstract",
      "description"
    ];
  auto pointer_head_sub_original =
    [
      "language",
      "source",
      "title"
    ];
  auto pointer_head_sub_publisher =
    [ "name" ];
  auto pointer_head_sub_rights =
    [
      "copyright",
      "cover",
      "illustrations",
      "license"
    ];
  auto pointer_head_sub_title =
    [
      "edition",
      "full",
      "language",
      "main",
      "note",
      "sub"
    ];
  auto config_jsonstr = `{
  }`;
}
/+
/+
  unify internal representation of header info for native & sdlang document headers
  represent either using struct, hashes or possibly json
  sdp internal representation should be identical for native & sdlang variants
+/
header.
  ├── make                         // make instructions
  │   ├── bold
  │   ├── breaks
  │   ├── cover_image
  │   ├── css
  │   ├── emphasis
  │   ├── footer
  │   ├── headings
  │   ├── home_button_image
  │   ├── home_button_text
  │   ├── italics
  │   ├── num_top
  │   ├── substitute
  │   └── texpdf_font
  └── meta                         // metadata
     ├── author                    // move author to creator:author
     ├── classify
     │   ├── dewey
     │   ├── keyword
     │   ├── loc
     │   ├── subject
     │   └── topic_register
     ├── creator
     │   ├── author
     │   │     ├── [ [first_name: x0, last_name: y0], [first_name: x1, last_name: y1] ]
     │   │     └── [ full_name0, full_name1 ]
     │   ├── author_email
     │   ├── illustrator
     │   └── translator
     ├── date
     │   ├── added_to_site
     │   ├── available
     │   ├── created
     │   ├── issued
     │   ├── modified
     │   ├── published
     │   └── valid
     ├── identifier
     │   ├── isbn
     │   ├── oclc
     │   └── pg
     ├── links
     ├── notes
     │   ├── abstract
     │   └── description
     ├── original
     │   ├── language
     │   ├── source
     │   └── title
     ├── publisher
     │   └── name
     ├── rights
     │   ├── copyright
     │   ├── cover
     │   ├── illustrations
     │   └── license
     └── title                    // move title: to title:main
         ├── edition
         ├── [ full (main + sub) ]
         ├── language
         ├── main
         ├── note
         ├── sub
         └── subtitle              // move title:subtitle to title:sub

61 leaves
+/
/+ regex flags +/
template SiSUrgxInitFlags() {
  int[string] flags_type_init() {
    int[string] flags_type_init = [
      "make_headings"        : 0,
      "header_make"          : 0,
      "header_meta"          : 0,
      "heading"              : 0,
      "biblio_section"       : 0,
      // "glossary_section"     : 0, // TODO
      "para"                 : 0,
      "blocks"               : 0, // 0..2 generic
      "code"                 : 0, // 0..2
      "poem"                 : 0, // 0..2
      "table"                : 0, // 0..2
      "group"                : 0, // 0..2
      "block"                : 0, // 0..2
      "quote"                : 0, // 0..2
      "verse_new"            : 0,
      "curly_code"           : 0,
      "curly_poem"           : 0,
      "curly_table"          : 0,
      "curly_group"          : 0,
      "curly_block"          : 0,
      "curly_quote"          : 0,
      "tic_code"             : 0,
      "tic_poem"             : 0,
      "tic_table"            : 0,
      "tic_group"            : 0,
      "tic_block"            : 0,
      "tic_quote"            : 0,
      "obj_cite_number_status"           : 0, // 0 obj_cite_number; 1 no obj_cite_number; 2 no obj_cite_number & dummy headings
      "obj_cite_number_status_multi_obj" : 0, // 0 obj_cite_number; 1 no obj_cite_number; 2 no obj_cite_number & dummy headings
      "book_index"           : 0,
    ];
    return flags_type_init;
  }
}
template SiSUbiblio() {
  // required: deemed_author (author || editor); year; fulltitle;
  auto biblio_entry_tags_jsonstr =  `{
    "is"                   : "",
    "sortby_deemed_author_year_title"  : "",
    "deemed_author"                    : "",
    "author_raw"                       : "",
    "author"                           : "",
    "author_arr"                       : [ "" ],
    "editor_raw"                       : "",
    "editor"                           : "",
    "editor_arr"                       : [ "" ],
    "title"                            : "",
    "subtitle"                         : "",
    "fulltitle"                        : "",
    "language"                         : "",
    "trans"                            : "",
    "src"                              : "",
    "journal"                          : "",
    "in"                               : "",
    "volume"                           : "",
    "edition"                          : "",
    "year"                             : "",
    "place"                            : "",
    "publisher"                        : "",
    "url"                              : "",
    "pages"                            : "",
    "note"                             : "",
    "short_name"                       : "",
    "id"                               : ""
  }`; // is: book, article, magazine, newspaper, blog, other
}
template InternalMarkup() {
  struct InlineMarkup {
    auto en_a_o = "【"; auto en_a_c = "】";  // endnote en_a_o: '~{'; en_a_c: '}~'
    auto en_b_o = "〖"; auto en_b_c = "〗";  // endnote en_b_o: '~['; en_b_c: ']~'
  }
}