/++
  output hub<br>
  check & generate output types requested
+/
template outputHub() {
  private import
    std.regex,
    std.algorithm,
    std.array,
    std.container,
    std.exception,
    std.getopt,
    std.process,
    std.stdio,
    std.file,
    std.path,
    std.range,
    std.regex,
    std.string,
    std.traits,
    std.typecons,
    std.uni,
    std.utf;
  import
    defaults,
    output_epub3,
    output_html,
    output_xhtmls,
    source_sisupod,
    create_zip_file,
    output_rgx,
    output_xhtmls;
  void outputHub(D,I)(D doc_abstraction, I doc_matters) {
    mixin SiSUoutputRgxInit;
    auto rgx = Rgx();
    if ((doc_matters.opt_action_bool["verbose"])) {
      writeln(doc_matters.keys_seq_seg);
    }
    if (doc_matters.opt_action_bool["source"]) {
      /+ mixin outputSource; +/
      writeln("source");
    }
    if (doc_matters.opt_action_bool["sisupod"]) {
      if ((doc_matters.opt_action_bool["verbose"])) {write("sisupod source processing... ");}
      SiSUpod!()(doc_matters);
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("sisupod done");}
    }
    if (doc_matters.opt_action_bool["text"]) {
      /+ mixin outputText; +/
      writeln("text processing");
    }
    if (doc_matters.opt_action_bool["html"]) {
      if ((doc_matters.opt_action_bool["verbose"])) {write("html scroll processing... ");}
      outputHTML!().scroll(doc_abstraction, doc_matters);
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("html scroll done");}
      if ((doc_matters.opt_action_bool["verbose"])) {write("html seg processing... ");}
      outputHTML!().seg(doc_abstraction, doc_matters);
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("html seg done");}
    } else if (doc_matters.opt_action_bool["html_seg"]) {
      if ((doc_matters.opt_action_bool["verbose"])) {write("html seg processing... ");}
      outputHTML!().seg(doc_abstraction, doc_matters);
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("html seg done");}
    } else if (doc_matters.opt_action_bool["html_scroll"]) {
      if ((doc_matters.opt_action_bool["verbose"])) {write("html scroll processing... ");}
      outputHTML!().scroll(doc_abstraction, doc_matters);
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("html scroll done");}
    }
    if (doc_matters.opt_action_bool["epub"]) {
      if ((doc_matters.opt_action_bool["verbose"])) {write("epub3 processing... ");}
      outputEPub3!()(doc_abstraction, doc_matters);
      // epub.css_write;
      if ((doc_matters.opt_action_bool["verbose"])) {writeln("epub3 done");}
    }
    if (doc_matters.opt_action_bool["pdf"]) {
      /+ mixin outputPDF; +/
      writeln("pdf processing");
    }
    if (doc_matters.opt_action_bool["odt"]) {
      /+ mixin outputODT; +/
      writeln("odt processing");
    }
    if (doc_matters.opt_action_bool["sqlite"]) {
      /+ mixin outputSQLite; +/
      writeln("sqlite processing");
    }
    if (doc_matters.opt_action_bool["postgresql"]) {
      /+ mixin outputPostgreSQL; +/
      writeln("pgsql processing");
    }
  }
}