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_sdlang.d | 516 +++++++++++++++++++++++++++++++++++++
 1 file changed, 516 insertions(+)
 create mode 100644 src/sdp/ao_header_extract_sdlang.d

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

diff --git a/src/sdp/ao_header_extract_sdlang.d b/src/sdp/ao_header_extract_sdlang.d
new file mode 100644
index 0000000..a175b4f
--- /dev/null
+++ b/src/sdp/ao_header_extract_sdlang.d
@@ -0,0 +1,516 @@
+/+
+  extract sdl header return sdl
++/
+template SiSUheaderExtractSDLang() {
+  private import
+    std.regex;
+  private import
+    ao_rgx;
+  struct HeaderExtractSDL {
+    mixin SiSUheaderRegister;
+    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 headerSDLangGet(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"]);
+      }
+      return header_sdlang; // sdlang.ast.Tag
+    }
+    private auto headerSDLangToJSONmake(Tag header_sdlang) {
+      /+ 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 headerSDLangToJSON(char[] header_sdlang_src) {
+      auto header_sdlang_tag = headerSDLangGet(header_sdlang_src); // sdlang.ast.Tag
+      auto header_json_tuple = headerSDLangToJSONmake(header_sdlang_tag);
+      return header_json_tuple;
+    }
+    
+  }
+  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;
+    }
+  }
+}
-- 
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