From f0c845eba3718fd0c732aebf25eb33e689798e03 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph@amissah.com>
Date: Sat, 25 Jun 2016 06:37:22 -0400
Subject: step6 headers (&config), native & sdlang to json internally

---
 src/sdp/ao_header_extract.d | 1312 +------------------------------------------
 1 file changed, 15 insertions(+), 1297 deletions(-)

(limited to 'src/sdp/ao_header_extract.d')

diff --git a/src/sdp/ao_header_extract.d b/src/sdp/ao_header_extract.d
index c02bc7c..76c5a7d 100644
--- a/src/sdp/ao_header_extract.d
+++ b/src/sdp/ao_header_extract.d
@@ -1,1307 +1,25 @@
-/+
-  extract sdl header return sdl
-+/
-template SiSUheaderExtractSDLang() {
-  private import
-    std.regex;
-  private import
-    ao_rgx;
-  struct HeaderExtractSDL {
-    mixin RgxInit;
-    auto rgx = Rgx();
-    final private auto headerMakeSDLang(in string src_header) {
-      scope(failure) {
-        stderr.writefln(
-          "%s\n%s\n%s:%s failed here:\n  src_header: %s",
-          __MODULE__, __FUNCTION__,
-          __FILE__, __LINE__,
-          src_header,
-        );
-      }
-      Tag sdl_root_header;
-      try {
-        sdl_root_header = parseSource(src_header);
-      }
-      catch(SDLangParseException e) {
-        stderr.writeln("SDLang problem with this document header:");
-        stderr.writeln(src_header);
-        // Error messages of the form:
-        // myFile.sdl(5:28): Error: Invalid integer suffix.
-        stderr.writeln(e.msg);
-      }
-      debug(sdlang) {
-        writeln("header SDL:");
-        writeln(sdl_root_header.toSDLDocument());
-      }
-      return sdl_root_header;
-    }
-    private auto headerSDLangToJSON(in char[] src_header) {
-      char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.line_delimiter);
-      char[] header_clean;
-      // TODO
-      foreach(header_line; source_header_arr) {
-        if (!match(header_line, rgx.comments)) {
-          header_clean ~= header_line ~ "\n";
-          // writeln(header_line);
-        }
-      }
-      /+ get sdlang tags +/
-      auto header_sdlang=headerMakeSDLang(to!string(header_clean));
-      debug(sdlang) {
-        writeln("--------------");
-        stdout.rawWrite( header_sdlang.toSDLDocument() );
-        writeln("--------------");
-        Value test = header_sdlang.tags["title"][0].values[0];
-        assert(test == typeid(string));
-        writeln(header_sdlang.maybe.tags["title"]);
-        writeln(header_sdlang.maybe.tags["title"][0].maybe.attributes["subtitle"]);
-      }
-      /+ TODO separate modules? sdlang then json
-      return header_sdlang;
-      // then do json module?
-      +/
-      /+ TODO json next +/
-      /+ TODO
-        auto dochead_make = parseJSON(header_make_jsonstr).object;
-        auto dochead_meta = parseJSON(header_meta_jsonstr).object;
-        auto hm = to!string(t.captures[1]);
-        auto hs = to!string(s.captures[1]);
-        if (dochead_make[hm][hs].type() == JSON_TYPE.STRING) {
-          dochead_make[hm][hs].str = to!string(s.captures[2]);
-        }
-        if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-          dochead_meta[hm][hs].str = to!string(s.captures[2]);
-        }
-      +/
-      /+ dochead +/
-      string hm;
-      string hs;
-      /+ make +/
-      auto dochead_make = parseJSON(header_make_jsonstr).object;
-      if (!(header_sdlang.maybe.tags["make"].empty)) {
-        hm = "make";
-        hs = "bold";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "breaks";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "cover_image";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "css";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "emphasis";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "footer";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "headings";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "home_button_image";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "home_button_text";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "italics";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "num_top";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "substitute";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "texpdf_font";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_make[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      /+ meta +/
-      auto dochead_meta = parseJSON(header_meta_jsonstr).object;
-      hm = "title";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        /+ TODO Title REQUIRED +/
-        hs = "main";
-        if (!(header_sdlang.tags[hm].empty)
-        && (header_sdlang.tags[hm][0].values[0].length > 1)) {
-          writeln(header_sdlang.tags[hm][0].values[0]);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].values[0]);
-            // to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        } else if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        } else {
-          writeln("Required header metadata Title, missing");
-        }
-        hs = "sub";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        } else if (!(header_sdlang.tags[hm][0].maybe.attributes["subtitle"].empty)
-        && (header_sdlang.tags[hm][0].attributes["subtitle"][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes["subtitle"][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes["subtitle"][0].value);
-        }
-        // full title composite (main + sub)
-        // hs = "full";
-        // dochead_meta[hm][hs] = dochead_meta[hm]["main"] ~ dochead_meta[hm]["sub"];
-        hs = "language";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes["lang"].empty)
-        && (header_sdlang.tags[hm][0].attributes["lang"][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes["lang"][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes["lang"][0].value);
-        } else if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "edition";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "note";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "creator";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        /+ Creator / Author REQUIRED +/
-        /+ TODO
-        - decide on representation for & deal with multiple authors;
-        - author(s) full name;
-        - author(s) surname & other parts
-        +/
-        hs = "author";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "author_email";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "illustrator";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "translator";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "classify";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "dewey";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "keywords";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "loc";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "subject";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "topic_register";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "date";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "added_to_site";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "available";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "created";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "issued";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "modified";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "published";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "valid";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "identifier";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "isbn";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "oclc";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "pg";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "links";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        /+ TODO
-          stuff to fix
-        +/
-        // hs = "link";
-        // if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        // && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-        //   writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        //   dochead_meta[hm][hs].str =
-        //     to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        // }
-      }
-      hm = "notes";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "abstract";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "description";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "original";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "language";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "source";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "title";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "publisher";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "name";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      hm = "rights";
-      if (!(header_sdlang.maybe.tags[hm].empty)) {
-        hs = "copyright";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "cover";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "illustrations";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-        hs = "license";
-        if (!(header_sdlang.tags[hm][0].maybe.attributes[hs].empty)
-        && (header_sdlang.tags[hm][0].attributes[hs][0].value.length > 1)) {
-          writeln(header_sdlang.tags[hm][0].attributes[hs][0].value);
-          dochead_meta[hm][hs].str =
-            to!string(header_sdlang.tags[hm][0].attributes[hs][0].value);
-        }
-      }
-      // writeln(dochead_make);
-      // writeln(dochead_meta);
-      auto t = tuple(dochead_make, dochead_meta);
-      static assert(!isTypeTuple!(t));
-      return t;
-    }
-    private auto headerSDLangToHash(in char[] src_header) {
-      char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.line_delimiter);
-      char[] header_clean;
-      string[string] header_make;
-      string[string][string] header_metadata;
-      foreach(header_line; source_header_arr) {
-        if (!match(header_line, rgx.comments)) {
-          header_clean ~= header_line ~ "\n";
-          // writeln(header_line);
-        }
-      }
-      /+ get sdlang tags +/
-      auto header_sdlang=headerMakeSDLang(to!string(header_clean));
-      Value test = header_sdlang.tags["title"][0].values[0];
-      // assert(test == typeid(string));
-      // writeln(header_sdlang.maybe.tags["title"]);
-      // writeln(header_sdlang.maybe.tags["title"][0].attributes["subtitle"]);
-      if (!(header_sdlang.maybe.tags["make"].empty)) {
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["bold"].empty)
-        && (header_sdlang.tags["make"][0].attributes["bold"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["bold"][0].value);
-          header_make["bold"] =
-            to!string(header_sdlang.tags["make"][0].attributes["bold"][0].value);
-        } else {
-          header_make["bold"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["breaks"].empty)
-        && (header_sdlang.tags["make"][0].attributes["breaks"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["breaks"][0].value);
-          header_make["breaks"] =
-            to!string(header_sdlang.tags["make"][0].attributes["breaks"][0].value);
-        } else {
-          header_make["breaks"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["cover_image"].empty)
-        && (header_sdlang.tags["make"][0].attributes["cover_image"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["cover_image"][0].value);
-          header_make["cover_image"] =
-            to!string(header_sdlang.tags["make"][0].attributes["cover_image"][0].value);
-        } else {
-          header_make["cover_image"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["css"].empty)
-        && (header_sdlang.tags["make"][0].attributes["css"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["css"][0].value);
-          header_make["css"] =
-            to!string(header_sdlang.tags["make"][0].attributes["css"][0].value);
-        } else {
-          header_make["css"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["emphasis"].empty)
-        && (header_sdlang.tags["make"][0].attributes["emphasis"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["emphasis"][0].value);
-          header_make["emphasis"] =
-            to!string(header_sdlang.tags["make"][0].attributes["emphasis"][0].value);
-        } else {
-          header_make["emphasis"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["footer"].empty)
-        && (header_sdlang.tags["make"][0].attributes["footer"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["footer"][0].value);
-          header_make["footer"] =
-            to!string(header_sdlang.tags["make"][0].attributes["footer"][0].value);
-        } else {
-          header_make["footer"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["headings"].empty)
-        && (header_sdlang.tags["make"][0].attributes["headings"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["headings"][0].value);
-          header_make["headings"] =
-            to!string(header_sdlang.tags["make"][0].attributes["headings"][0].value);
-        } else {
-          header_make["headings"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["home_button_image"].empty)
-        && (header_sdlang.tags["make"][0].attributes["home_button_image"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["home_button_image"][0].value);
-          header_make["home_button_image"] =
-            to!string(header_sdlang.tags["make"][0].attributes["home_button_image"][0].value);
-        } else {
-          header_make["home_button_image"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["home_button_text"].empty)
-        && (header_sdlang.tags["make"][0].attributes["home_button_text"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["home_button_text"][0].value);
-          header_make["home_button_text"] =
-            to!string(header_sdlang.tags["make"][0].attributes["home_button_text"][0].value);
-        } else {
-          header_make["home_button_text"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["italics"].empty)
-        && (header_sdlang.tags["make"][0].attributes["italics"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["italics"][0].value);
-          header_make["italics"] =
-            to!string(header_sdlang.tags["make"][0].attributes["italics"][0].value);
-        } else {
-          header_make["italics"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["num_top"].empty)
-        && (header_sdlang.tags["make"][0].attributes["num_top"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["num_top"][0].value);
-          header_make["num_top"] =
-            to!string(header_sdlang.tags["make"][0].attributes["num_top"][0].value);
-        } else {
-          header_make["num_top"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["substitute"].empty)
-        && (header_sdlang.tags["make"][0].attributes["substitute"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["substitute"][0].value);
-          header_make["substitute"] =
-            to!string(header_sdlang.tags["make"][0].attributes["substitute"][0].value);
-        } else {
-          header_make["substitute"] = "";
-        }
-        if (!(header_sdlang.tags["make"][0].maybe.attributes["texpdf_font"].empty)
-        && (header_sdlang.tags["make"][0].attributes["texpdf_font"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["make"][0].attributes["texpdf_font"][0].value);
-          header_make["texpdf_font"] =
-            to!string(header_sdlang.tags["make"][0].attributes["texpdf_font"][0].value);
-        } else {
-          header_make["texpdf_font"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["title"].empty)) {
-        /+ Title REQUIRED +/
-        if (!(header_sdlang.tags["title"].empty)
-        && (header_sdlang.tags["title"][0].values[0].length > 1)) {
-          writeln(header_sdlang.tags["title"][0].values[0]);
-          header_metadata["title"]["main"] =
-            to!string(header_sdlang.tags["title"][0].values[0]);
-        } else if (!(header_sdlang.tags["title"][0].maybe.attributes["main"].empty)
-        && (header_sdlang.tags["title"][0].attributes["main"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["main"][0].value);
-          header_metadata["title"]["main"] =
-            to!string(header_sdlang.tags["title"][0].attributes["main"][0].value);
-        } else {
-          writeln("Required header metadata Title, missing");
-          header_metadata["title"]["main"] = "";
-        }
-        if (!(header_sdlang.tags["title"][0].maybe.attributes["sub"].empty)
-        && (header_sdlang.tags["title"][0].attributes["sub"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["sub"][0].value);
-          header_metadata["title"]["sub"] =
-            to!string(header_sdlang.tags["title"][0].attributes["sub"][0].value);
-        } else if (!(header_sdlang.tags["title"][0].maybe.attributes["subtitle"].empty)
-        && (header_sdlang.tags["title"][0].attributes["subtitle"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["subtitle"][0].value);
-          header_metadata["title"]["sub"] =
-            to!string(header_sdlang.tags["title"][0].attributes["subtitle"][0].value);
-        } else {
-          header_metadata["title"]["sub"] = "";
-        }
-        // full title composite (main + sub)
-        header_metadata["title"]["full"] = header_metadata["title"]["main"] ~ header_metadata["title"]["sub"];
-        if (!(header_sdlang.tags["title"][0].maybe.attributes["lang"].empty)
-        && (header_sdlang.tags["title"][0].attributes["lang"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["lang"][0].value);
-          header_metadata["title"]["language"] =
-            to!string(header_sdlang.tags["title"][0].attributes["lang"][0].value);
-        } else if (!(header_sdlang.tags["title"][0].maybe.attributes["language"].empty)
-        && (header_sdlang.tags["title"][0].attributes["language"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["language"][0].value);
-          header_metadata["title"]["language"] =
-            to!string(header_sdlang.tags["title"][0].attributes["language"][0].value);
-        } else {
-          header_metadata["title"]["language"] = "";
-        }
-        if (!(header_sdlang.tags["title"][0].maybe.attributes["edition"].empty)
-        && (header_sdlang.tags["title"][0].attributes["edition"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["edition"][0].value);
-          header_metadata["title"]["edition"] =
-            to!string(header_sdlang.tags["title"][0].attributes["edition"][0].value);
-        } else {
-          header_metadata["title"]["edition"] = "";
-        }
-        if (!(header_sdlang.tags["title"][0].maybe.attributes["note"].empty)
-        && (header_sdlang.tags["title"][0].attributes["note"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["title"][0].attributes["note"][0].value);
-          header_metadata["title"]["note"] =
-            to!string(header_sdlang.tags["title"][0].attributes["note"][0].value);
-        } else {
-          header_metadata["title"]["note"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["creator"].empty)) {
-        /+ Creator / Author REQUIRED +/
-        /+ TODO
-        - decide on representation for & deal with multiple authors;
-        - author(s) full name;
-        - author(s) surname & other parts
-        +/
-        if (!(header_sdlang.tags["creator"][0].maybe.attributes["author"].empty)
-        && (header_sdlang.tags["creator"][0].attributes["author"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["creator"][0].attributes["author"][0].value);
-          header_metadata["creator"]["author"] =
-            to!string(header_sdlang.tags["creator"][0].attributes["author"][0].value);
-        } else {
-          header_metadata["creator"]["author"] = "";
-        }
-        if (!(header_sdlang.tags["creator"][0].maybe.attributes["author_email"].empty)
-        && (header_sdlang.tags["creator"][0].attributes["author_email"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["creator"][0].attributes["author_email"][0].value);
-          header_metadata["creator"]["author_email"] =
-            to!string(header_sdlang.tags["creator"][0].attributes["author_email"][0].value);
-        } else {
-          header_metadata["creator"]["author_email"] = "";
-        }
-        if (!(header_sdlang.tags["creator"][0].maybe.attributes["illustrator"].empty)
-        && (header_sdlang.tags["creator"][0].attributes["illustrator"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["creator"][0].attributes["illustrator"][0].value);
-          header_metadata["creator"][""] =
-            to!string(header_sdlang.tags["creator"][0].attributes["illustrator"][0].value);
-        } else {
-          header_metadata["creator"]["illustrator"] = "";
-        }
-        if (!(header_sdlang.tags["creator"][0].maybe.attributes["translator"].empty)
-        && (header_sdlang.tags["creator"][0].attributes["translator"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["creator"][0].attributes["translator"][0].value);
-          header_metadata["creator"]["translator"] =
-            to!string(header_sdlang.tags["creator"][0].attributes["translator"][0].value);
-        } else {
-          header_metadata["creator"][""] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["classify"].empty)) {
-        if (!(header_sdlang.tags["classify"][0].maybe.attributes["dewey"].empty)
-        && (header_sdlang.tags["classify"][0].attributes["dewey"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["classify"][0].attributes["dewey"][0].value);
-          header_metadata["classify"]["dewey"] =
-            to!string(header_sdlang.tags["classify"][0].attributes["dewey"][0].value);
-        } else {
-          header_metadata["classify"]["dewey"] = "";
-        }
-        if (!(header_sdlang.tags["classify"][0].maybe.attributes["keyword"].empty)
-        && (header_sdlang.tags["classify"][0].attributes["keyword"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["classify"][0].attributes["keyword"][0].value);
-          header_metadata["classify"]["keyword"] =
-            to!string(header_sdlang.tags["classify"][0].attributes["keyword"][0].value);
-        } else {
-          header_metadata["classify"]["keyword"] = "";
-        }
-        if (!(header_sdlang.tags["classify"][0].maybe.attributes["loc"].empty)
-        && (header_sdlang.tags["classify"][0].attributes["loc"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["classify"][0].attributes["loc"][0].value);
-          header_metadata["classify"]["loc"] =
-            to!string(header_sdlang.tags["classify"][0].attributes["loc"][0].value);
-        } else {
-          header_metadata["classify"]["loc"] = "";
-        }
-        if (!(header_sdlang.tags["classify"][0].maybe.attributes["subject"].empty)
-        && (header_sdlang.tags["classify"][0].attributes["subject"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["classify"][0].attributes["subject"][0].value);
-          header_metadata["classify"]["subject"] =
-            to!string(header_sdlang.tags["classify"][0].attributes["subject"][0].value);
-        } else {
-          header_metadata["classify"]["subject"] = "";
-        }
-        if (!(header_sdlang.tags["classify"][0].maybe.attributes["topic_register"].empty)
-        && (header_sdlang.tags["classify"][0].attributes["topic_register"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["classify"][0].attributes["topic_register"][0].value);
-          header_metadata["classify"]["topic_register"] =
-            to!string(header_sdlang.tags["classify"][0].attributes["topic_register"][0].value);
-        } else {
-          header_metadata["classify"]["topic_register"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["date"].empty)) {
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["added_to_site"].empty)
-        && (header_sdlang.tags["date"][0].attributes["added_to_site"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["added_to_site"][0].value);
-          header_metadata["date"]["added_to_site"] =
-            to!string(header_sdlang.tags["date"][0].attributes["added_to_site"][0].value);
-        } else {
-          header_metadata["date"]["added_to_site"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["available"].empty)
-        && (header_sdlang.tags["date"][0].attributes["available"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["available"][0].value);
-          header_metadata["date"]["available"] =
-            to!string(header_sdlang.tags["date"][0].attributes["available"][0].value);
-        } else {
-          header_metadata["date"]["available"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["created"].empty)
-        && (header_sdlang.tags["date"][0].attributes["created"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["created"][0].value);
-          header_metadata["date"]["created"] =
-            to!string(header_sdlang.tags["date"][0].attributes["created"][0].value);
-        } else {
-          header_metadata["date"]["created"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["issued"].empty)
-        && (header_sdlang.tags["date"][0].attributes["issued"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["issued"][0].value);
-          header_metadata["date"]["issued"] =
-            to!string(header_sdlang.tags["date"][0].attributes["issued"][0].value);
-        } else {
-          header_metadata["date"]["issued"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["modified"].empty)
-        && (header_sdlang.tags["date"][0].attributes["modified"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["modified"][0].value);
-          header_metadata["date"]["modified"] =
-            to!string(header_sdlang.tags["date"][0].attributes["modified"][0].value);
-        } else {
-          header_metadata["date"]["modified"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["published"].empty)
-        && (header_sdlang.tags["date"][0].attributes["published"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["published"][0].value);
-          header_metadata["date"]["published"] =
-            to!string(header_sdlang.tags["date"][0].attributes["published"][0].value);
-        } else {
-          header_metadata["date"]["published"] = "";
-        }
-        if (!(header_sdlang.tags["date"][0].maybe.attributes["valid"].empty)
-        && (header_sdlang.tags["date"][0].attributes["valid"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["date"][0].attributes["valid"][0].value);
-          header_metadata["date"]["valid"] =
-            to!string(header_sdlang.tags["date"][0].attributes["valid"][0].value);
-        } else {
-          header_metadata["date"]["valid"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["identifier"].empty)) {
-        if (!(header_sdlang.tags["identifier"][0].maybe.attributes["isbn"].empty)
-        && (header_sdlang.tags["identifier"][0].attributes["isbn"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["identifier"][0].attributes["isbn"][0].value);
-          header_metadata["identifier"]["isbn"] =
-            to!string(header_sdlang.tags["identifier"][0].attributes["isbn"][0].value);
-        } else {
-          header_metadata["identifier"]["isbn"] = "";
-        }
-        if (!(header_sdlang.tags["identifier"][0].maybe.attributes["oclc"].empty)
-        && (header_sdlang.tags["identifier"][0].attributes["oclc"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["identifier"][0].attributes["oclc"][0].value);
-          header_metadata["identifier"]["oclc"] =
-            to!string(header_sdlang.tags["identifier"][0].attributes["oclc"][0].value);
-        } else {
-          header_metadata["identifier"]["oclc"] = "";
-        }
-        if (!(header_sdlang.tags["identifier"][0].maybe.attributes["pg"].empty)
-        && (header_sdlang.tags["identifier"][0].attributes["pg"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["identifier"][0].attributes["pg"][0].value);
-          header_metadata["identifier"]["pg"] =
-            to!string(header_sdlang.tags["identifier"][0].attributes["pg"][0].value);
-        } else {
-          header_metadata["identifier"]["pg"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["links"].empty)) {
-        /+ TODO
-          stuff to fix
-        +/
-        if (!(header_sdlang.tags["links"][0].maybe.attributes["link"].empty)
-        && (header_sdlang.tags["links"][0].attributes["link"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["links"][0].attributes["link"][0].value);
-          // header_metadata["links"]["list"] =
-          //   to!string(header_sdlang.tags["links"][0].attributes["link"][0].value);
-          header_metadata["links"]["list"] = "";
-        } else {
-          header_metadata["links"]["list"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["notes"].empty)) {
-        if (!(header_sdlang.tags["notes"][0].maybe.attributes["abstract"].empty)
-        && (header_sdlang.tags["notes"][0].attributes["abstract"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["notes"][0].attributes["abstract"][0].value);
-          header_metadata["notes"]["abstract"] =
-            to!string(header_sdlang.tags["notes"][0].attributes["abstract"][0].value);
-        } else {
-          header_metadata["notes"]["abstract"] = "";
-        }
-        if (!(header_sdlang.tags["notes"][0].maybe.attributes["description"].empty)
-        && (header_sdlang.tags["notes"][0].attributes["description"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["notes"][0].attributes["description"][0].value);
-          header_metadata["notes"]["description"] =
-            to!string(header_sdlang.tags["notes"][0].attributes["description"][0].value);
-        } else {
-          header_metadata["notes"]["description"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["original"].empty)) {
-        if (!(header_sdlang.tags["original"][0].maybe.attributes["language"].empty)
-        && (header_sdlang.tags["original"][0].attributes["language"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["original"][0].attributes["language"][0].value);
-          header_metadata["original"]["language"] =
-            to!string(header_sdlang.tags["original"][0].attributes["language"][0].value);
-        } else {
-          header_metadata["original"]["language"] = "";
-        }
-        if (!(header_sdlang.tags["original"][0].maybe.attributes["source"].empty)
-        && (header_sdlang.tags["original"][0].attributes["source"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["original"][0].attributes["source"][0].value);
-          header_metadata["original"]["source"] =
-            to!string(header_sdlang.tags["original"][0].attributes["source"][0].value);
-        } else {
-          header_metadata["original"]["source"] = "";
-        }
-        if (!(header_sdlang.tags["original"][0].maybe.attributes["title"].empty)
-        && (header_sdlang.tags["original"][0].attributes["title"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["original"][0].attributes["title"][0].value);
-          header_metadata["original"]["title"] =
-            to!string(header_sdlang.tags["original"][0].attributes["title"][0].value);
-        } else {
-          header_metadata["original"]["title"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["publisher"].empty)) {
-        if (!(header_sdlang.tags["publisher"][0].maybe.attributes["name"].empty)
-        && (header_sdlang.tags["publisher"][0].attributes["name"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["publisher"][0].attributes["name"][0].value);
-          header_metadata["publisher"]["name"] =
-            to!string(header_sdlang.tags["publisher"][0].attributes["name"][0].value);
-        } else {
-          header_metadata["publisher"]["name"] = "";
-        }
-      }
-      if (!(header_sdlang.maybe.tags["rights"].empty)) {
-        if (!(header_sdlang.tags["rights"][0].maybe.attributes["copyright"].empty)
-        && (header_sdlang.tags["rights"][0].attributes["copyright"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["rights"][0].attributes["copyright"][0].value);
-          header_metadata["rights"]["copyright"] =
-            to!string(header_sdlang.tags["rights"][0].attributes["copyright"][0].value);
-        } else {
-          header_metadata["rights"]["copyright"] = "";
-        }
-        if (!(header_sdlang.tags["rights"][0].maybe.attributes["cover"].empty)
-        && (header_sdlang.tags["rights"][0].attributes["cover"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["rights"][0].attributes["cover"][0].value);
-          header_metadata["rights"]["cover"] =
-            to!string(header_sdlang.tags["rights"][0].attributes["cover"][0].value);
-        } else {
-          header_metadata["rights"]["cover"] = "";
-        }
-        if (!(header_sdlang.tags["rights"][0].maybe.attributes["illustrations"].empty)
-        && (header_sdlang.tags["rights"][0].attributes["illustrations"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["rights"][0].attributes["illustrations"][0].value);
-          header_metadata["rights"]["illustrations"] =
-            to!string(header_sdlang.tags["rights"][0].attributes["illustrations"][0].value);
-        } else {
-          header_metadata["rights"]["illustrations"] = "";
-        }
-        if (!(header_sdlang.tags["rights"][0].maybe.attributes["license"].empty)
-        && (header_sdlang.tags["rights"][0].attributes["license"][0].value.length > 1)) {
-          writeln(header_sdlang.tags["rights"][0].attributes["license"][0].value);
-          header_metadata["rights"]["license"] =
-            to!string(header_sdlang.tags["rights"][0].attributes["license"][0].value);
-        } else {
-          header_metadata["rights"]["license"] = "";
-        }
-      }
-      writeln("--------------");
-      stdout.rawWrite( header_sdlang.toSDLDocument() );
-      writeln("--------------");
-      /+
-      namespace:name values attributes {
-        children
-      }
-      +/
-      return header_sdlang;
-    }
-    private auto headerSDLang(in char[] src_header) {
-      char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.line_delimiter);
-      char[] header_clean;
-      foreach(header_line; source_header_arr) {
-        if (!match(header_line, rgx.comments)) {
-          header_clean ~= header_line ~ "\n";
-          // writeln(header_line);
-        }
-      }
-      // writeln(header_clean); // consider
-      auto header_sdlang=headerMakeSDLang(to!string(header_clean));
-      return header_sdlang;
-    }
-    
-  }
-  struct HeaderUseSDL {
-    mixin RgxInit;
-    auto rgx = Rgx();
-    // Tag = sdl_header;
-    auto headerUseSDLang(T)(auto T sdl_root_header) {
-    // T sdl_root_header;
-    // auto headerUseSDLang(Tag sdl_root_header) {
-    // private auto headerUseSDLang(Tag sdl_root_header) {
-    // private auto headerUseSDLang(in Tag sdl_root_header) {
-      // auto sdl_root_header = T;
-
-  // Value is a std.variant.Algebraic
-  Value test = sdl_root_header.tags["title"][0].values[0];
-  // assert(test == typeid(string));
-  writeln(test);
-
-      return sdl_root_header;
-    }
-  }
-}
 /+
   extract native/orig header return json
 +/
-template SiSUheaderExtractNative() {
+template SiSUheaderExtractHub() {
   private import
-    std.exception,
-    std.regex,
-    std.utf,
-    std.conv : to;
+    std.regex;
   private import
     ao_rgx;
-  struct HeaderDocMetadataAndMakeNativeToJson {
-    mixin SiSUrgxInitFlags;
-    mixin RgxInit;
+  struct HeaderDocMetadataAndMake {
+    mixin SiSUheaderExtractNative;
+    mixin SiSUheaderExtractSDLang;
     auto rgx = Rgx();
-    enum State { off, on }
-    string hm, hs;
-    auto header_metadata_and_make_jsonstr(
-      string header,
-      JSONValue[string] dochead_meta,
-      JSONValue[string] dochead_make
-    )
-    in { }
-    body {
-      scope(exit) {
-        destroy(header);
-        destroy(dochead_meta);
-        destroy(dochead_make);
-      }
-      if (auto t = match(header, rgx.native_header_main)) {
-        char[][] header_obj_spl = split(
-          cast(char[]) header,
-          rgx.line_delimiter_ws_strip
-        );
-        auto hm = to!string(t.captures[1]);
-        if (match(hm, rgx.main_headers)) {
-          foreach (line; header_obj_spl) {
-            if (auto m = match(line, rgx.native_header_main)) {
-              if (!empty(m.captures[2])) {
-                if (hm == "creator") {
-                  dochead_meta[hm]["author"].str =
-                    to!string(m.captures[2]);
-                } else if (hm == "title") {
-                  dochead_meta[hm]["main"].str =
-                    to!string(m.captures[2]);
-                } else if (hm == "publisher") {
-                  dochead_meta[hm]["name"].str =
-                    to!string(m.captures[2]);
-                }
-              }
-            } else if (auto s = match(line, rgx.native_header_sub)) {
-              if (!empty(s.captures[2])) {
-                auto hs = to!string(s.captures[1]);
-                if ((hm == "make" )
-                && (dochead_make[hm].type() == JSON_TYPE.OBJECT)) {
-                  switch (hm) {
-                  case "make":
-                    if (match(hs, rgx.native_subhead_make)) {
-                      if (dochead_make[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_make[hm][hs].str = to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  default:
-                    break;
-                  }
-                } else if (dochead_meta[hm].type() == JSON_TYPE.OBJECT) {
-                  switch (hm) {
-                  case "creator":
-                    if (match(hs, rgx.native_subhead_creator)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "title":
-                    if (match(hs, rgx.native_subhead_title)) {
-                      if ((hs == "subtitle")
-                      && (dochead_meta[hm]["sub"].type() == JSON_TYPE.STRING)) {
-                        dochead_meta[hm]["sub"].str =
-                          to!string(s.captures[2]);
-                      } else if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "rights":
-                    if (match(hs, rgx.native_subhead_rights)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "date":
-                    if (match(hs, rgx.native_subhead_date)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "original":
-                    if (match(hs, rgx.native_subhead_original)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "classify":
-                    if (match(hs, rgx.native_subhead_classify)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "identifier":
-                    if (match(hs, rgx.native_subhead_identifier)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "notes":
-                    if (match(hs, rgx.native_subhead_notes)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "publisher":
-                    if (match(hs, rgx.native_subhead_publisher)) {
-                      if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                        dochead_meta[hm][hs].str =
-                          to!string(s.captures[2]);
-                      }
-                    } else {
-                      writeln("not a valid header type:", hm, ":", hs);
-                      destroy(hm);
-                      destroy(hs);
-                    }
-                    break;
-                  case "links":
-                    destroy(hm);
-                    destroy(hs);
-                    // if (match(hs, rgx.native_subhead_links)) {
-                    //   if (dochead_meta[hm][hs].type() == JSON_TYPE.STRING) {
-                    //     dochead_meta[hm][hs].str = to!string(s.captures[2]);
-                    //   }
-                    // } else {
-                    //   writeln("not a valid header type:", hm, ":", hs);
-                    //   destroy(hm);
-                    //   destroy(hs);
-                    // }
-                    break;
-                  default:
-                    break;
-                  }
-                }
-              }
-            }
-          }
-        } else {
-          writeln("not a valid header type:", hm);
-        }
-      }
-      auto t = tuple(dochead_meta, dochead_make);
-      static assert(!isTypeTuple!(t));
-      return t;
-    }
-    private auto native_header_extract(
-      char[] line,
-      ref int[string] line_occur,
-      ref string[string] an_object,
-      ref int[string] type
-    ) {
-      if (matchFirst(line, rgx.native_header_make)) {   /+ matched header_make +/
-        debug(header1) { /+ writeln(line); +/ }
-        type["header"]      = State.on;
-        type["header_make"] = State.on;
-        type["header_meta"] = State.off;
-        ++line_occur["header_make"];
-        an_object["obj"] ~= line ~= "\n";
-      } else if (matchFirst(line, rgx.native_header)) { /+ matched header_metadata +/
-        /+ (generic header match and not previously caught by header_make) +/
-        debug(header1) { /+ writeln(line); +/ }
-        type["header"]      = State.on;
-        type["header_make"] = State.off;
-        type["header_meta"] = State.on;
-        ++line_occur["header_meta"];
-        an_object["obj"] ~= line ~= "\n";
-      } else if (type["header_make"] == State.on
-      && (line_occur["header_make"] > State.off)) {     /+ header_make flag set +/
-        if (matchFirst(line, rgx.native_header_sub)) {  /+ sub-header +/
-          debug(header1) { /+ writeln(line); +/ }
-          ++line_occur["header_make"];
-          an_object["obj"] ~= line ~= "\n";
-        }
-      } else if (type["header_meta"] == State.on
-      && (line_occur["header_meta"] > State.off)) {     /+ header_metadata flag set +/
-        if (matchFirst(line, rgx.native_header_sub)) {  /+ sub-header +/
-          debug(header1) { /+ writeln(line); +/ }
-          ++line_occur["header_meta"];
-          an_object["obj"] ~= line ~= "\n";
-        }
-      }
-      return an_object;
-    }
-    auto header_reset_states_common(
-      ref int[string] line_occur,
-      ref string[string] an_object,
-      ref int[string] type
-    ) {
-      // line_occur["header"] = State.off;
-      line_occur["header_make"] = State.off;
-      line_occur["header_meta"] = State.off;
-      type["header"] = State.off;
-      // type["header_make"] = State.off;
-      // type["header_meta"] = State.off;
-      an_object.remove("obj");
-      an_object.remove("is");
-      an_object.remove("attrib");
-    }
-    private auto headerContentJSON(in char[] src_header) {
-      auto type = flags_type_init;
-      type = [
-       "header"          : State.off,
-       "header_make"     : State.off,
-       "header_meta"     : State.off,
-      ];
-      string[string] an_object;
-      int[string] line_occur;
-      auto dochead_make = parseJSON(header_make_jsonstr).object;
-      auto dochead_meta = parseJSON(header_meta_jsonstr).object;
-      auto set_header = HeaderDocMetadataAndMakeNativeToJson();
-      char[][] source_header_arr =
-        split(cast(char[]) src_header, rgx.line_delimiter);
-      foreach(header_line; source_header_arr) {
-        if (auto m = matchFirst(header_line, rgx.comment)) {
-          /+ matched comment +/
-          debug(comment) {
-            // tell_l("blue", header_line);
-          }
-          header_reset_states_common(line_occur, an_object, type);
-          // type["header_make"] = State.off;
-          // type["header_meta"] = State.off;
-        } else if ((matchFirst(header_line, rgx.native_header))
-        || (type["header_make"] == State.on
-        && (line_occur["header_make"] > State.off))
-        || (type["header_meta"] == State.on
-        && (line_occur["header_meta"] > State.off))) {
-          if (header_line.length == 0) {
-            /+ header_make instructions (current line empty) +/
-            auto dochead_metadata_and_make =
-              set_header.header_metadata_and_make_jsonstr(strip(an_object["obj"]), dochead_meta, dochead_make);
-            static assert(!isTypeTuple!(dochead_metadata_and_make));
-            dochead_meta = dochead_metadata_and_make[0];
-            dochead_make = dochead_metadata_and_make[1];
-            header_reset_states_common(line_occur, an_object, type);
-            type["header_make"] = State.off;
-            type["header_meta"] = State.off;
-            writeln(dochead_metadata_and_make);
-          } else {
-            an_object = native_header_extract(header_line, line_occur, an_object, type);
-          }
-        } else {
-          // writeln(__LINE__);
-        }
-      }
-      auto t = tuple(
-        dochead_make,
-        dochead_meta,
-      );
-      return t;
+    private auto headerContentJSON(char[] header_src) {
+      auto head_native = HeaderDocMetadataAndMakeNativeToJson();
+      auto head_sdlang = HeaderExtractSDL();
+      writeln(__LINE__);
+      auto header_make_and_meta_tuple = (match(header_src, rgx.native_header_meta_title))
+      ? (head_native.headerNativeToJSON(header_src))
+      : (head_sdlang.headerSDLangToJSON(header_src));
+      writeln(__LINE__);
+      static assert(!isTypeTuple!(header_make_and_meta_tuple));
+      return header_make_and_meta_tuple;
     }
   }
 }
-- 
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