From 90873fabd7451e1dd8c4b39303906e19bdc481f7 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph.amissah@gmail.com>
Date: Wed, 10 Apr 2024 22:24:34 -0400
Subject: 0.16.0 sisudoc (src/sisudoc sisudoc spine)

- src/sisudoc (replaces src/doc_reform)
- sisudoc spine (used more)
---
 src/doc_reform/io_out/metadata.d | 609 ---------------------------------------
 1 file changed, 609 deletions(-)
 delete mode 100644 src/doc_reform/io_out/metadata.d

(limited to 'src/doc_reform/io_out/metadata.d')

diff --git a/src/doc_reform/io_out/metadata.d b/src/doc_reform/io_out/metadata.d
deleted file mode 100644
index 2ddc19d..0000000
--- a/src/doc_reform/io_out/metadata.d
+++ /dev/null
@@ -1,609 +0,0 @@
-/+
-- Name: Spine, Doc Reform [a part of]
-  - Description: documents, structuring, processing, publishing, search
-    - static content generator
-
-  - Author: Ralph Amissah
-    [ralph.amissah@gmail.com]
-
-  - Copyright: (C) 2015 - 2024 Ralph Amissah, All Rights Reserved.
-
-  - License: AGPL 3 or later:
-
-    Spine (SiSU), a framework for document structuring, publishing and
-    search
-
-    Copyright (C) Ralph Amissah
-
-    This program is free software: you can redistribute it and/or modify it
-    under the terms of the GNU AFERO General Public License as published by the
-    Free Software Foundation, either version 3 of the License, or (at your
-    option) any later version.
-
-    This program is distributed in the hope that it will be useful, but WITHOUT
-    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-    FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
-    more details.
-
-    You should have received a copy of the GNU General Public License along with
-    this program. If not, see [https://www.gnu.org/licenses/].
-
-    If you have Internet connection, the latest version of the AGPL should be
-    available at these locations:
-    [https://www.fsf.org/licensing/licenses/agpl.html]
-    [https://www.gnu.org/licenses/agpl.html]
-
-  - Spine (by Doc Reform, related to SiSU) uses standard:
-    - docReform markup syntax
-      - standard SiSU markup syntax with modified headers and minor modifications
-    - docReform object numbering
-      - standard SiSU object citation numbering & system
-
-  - Homepages:
-    [https://www.sisudoc.org]
-    [https://www.doc-reform.org]
-
-  - Git
-    [https://git.sisudoc.org/]
-
-+/
-module doc_reform.io_out.metadata;
-@safe:
-template outputMetadata() {
-  void outputMetadata(T)( T  doc_matters) {
-    string inline_search_form(M)(
-      M  doc_matters,
-    ) {
-      string o;
-      string _form;
-      if (doc_matters.opt.action.html_link_search) {
-        o = format(q"┃
-        <div class="flex-menu-option">
-          <!-- SiSU Spine Search -->
-          <form action="%s" target="_top" method="POST" accept-charset="UTF-8" id="searchtxt">
-          &nbsp;&nbsp;<font size="2">%s&nbsp;
-          <input type="text" name="sf" size="24" maxlength="255">%s
-          <input type="hidden" name="sml" value="1000">
-          <input type="hidden" name="ec" value="on">
-          <input type="hidden" name="url" value="on">
-          <input type="hidden" name="rt" value="txt">
-          <button type="submit" form="searchtxt" name="fn" value="%s">&nbsp;• ⚏&nbsp;</button>
-          </font></form>
-          <!-- SiSU Spine Search -->
-        </div>
-    <div class="flex-menu-option">
-    <!-- SiSU Spine Search -->
-    <form action="%s" target="_top" method="POST" accept-charset="UTF-8" id="search">
-    <font size="2">
-    <input type="text" name="sf" size="24" maxlength="255">%s
-    <input type="hidden" name="sml" value="1000">
-    <input type="hidden" name="ec" value="on">
-    <input type="hidden" name="url" value="on">
-    <button type="submit" form="search" name="fn" value="%s">• ፨</button>
-    <button type="submit" form="search">㏈ ፨</button>
-    </font></form>
-    <!-- SiSU Spine Search -->
-    </div>┃",
-        doc_matters.conf_make_meta.conf.w_srv_cgi_action,
-        (doc_matters.conf_make_meta.conf.w_srv_db_sqlite_filename.empty)
-          ? ""
-          : "\n    <a href=\""
-            ~ doc_matters.conf_make_meta.conf.w_srv_cgi_action
-            ~ "\">&#x1f50e;&nbsp;</a>",
-        (doc_matters.conf_make_meta.conf.w_srv_db_sqlite_filename.empty)
-          ? ""
-          : "\n    <input type=\"hidden\" name=\"db\" value=\""
-            ~ doc_matters.conf_make_meta.conf.w_srv_db_sqlite_filename
-            ~ "\">",
-        doc_matters.src.filename_base,
-        doc_matters.conf_make_meta.conf.w_srv_cgi_action,
-        (doc_matters.conf_make_meta.conf.w_srv_db_sqlite_filename.empty)
-          ? ""
-          : "\n    <input type=\"hidden\" name=\"db\" value=\""
-            ~ doc_matters.conf_make_meta.conf.w_srv_db_sqlite_filename
-            ~ "\">",
-        doc_matters.src.filename_base,
-        );
-      } else {
-        o = "";
-      }
-      return o;
-    }
-    import
-      std.file,
-      std.format;
-    import doc_reform.io_out;
-    mixin InternalMarkup;
-    string[] metadata_;
-string theme_dark_0 = format(q"┃
-  body {
-    color                    : #CCCCCC;
-    background               : #000000;
-    background-color         : #000000;
-  }
-  a:link {
-    color                    : #FFFFFF;
-    text-decoration          : none;
-  }
-  a:visited {
-    color                    : #999999;
-    text-decoration          : none;
-  }
-  a:hover {
-    color                    : #000000;
-    background-color         : #555555;
-  }
-  a:hover img {
-    background-color         : #000000;
-  }
-  a:active {
-    color                    : #888888;
-    text-decoration          : underline;
-  }
-  a.lnkicon:link {
-    text-decoration          : none;
-  }
-  a.lnkicon:visited {
-    text-decoration          : none;
-  }
-  a.lnkicon:hover {
-    font-size                : 160%%;
-  }
-  a:hover img {
-    background-color         : #FFFFFF;
-  }
-  input {
-    color                    : #FFFFFF;
-    background-color         : #777777;
-  }
-┃");
-string theme_light_0 = format(q"┃
-  body {
-    color                    : #000000;
-    background               : #FFFFFF;
-    background-color         : #FFFFFF;
-  }
-  a:link {
-    color                    : #003399;
-    text-decoration          : none;
-  }
-  a:visited {
-    color                    : #003399;
-    text-decoration          : none;
-  }
-  a:hover {
-    color                    : #000000;
-    background-color         : #f9f9aa;
-  }
-  a:hover img {
-    background-color         : #FFFFFF;
-  }
-  a:active {
-    color                    : #003399;
-    text-decoration          : underline;
-  }
-  a.lnkicon:link {
-    text-decoration          : none;
-  }
-  a.lnkicon:visited {
-    text-decoration          : none;
-  }
-  a.lnkicon:hover {
-    font-size                : 160%%;
-  }
-  a:hover img {
-    background-color         : #FFFFFF;
-  }
-  input {
-    color                    : #000000;
-    background-color         : #FFFFFF;
-  }
-┃");
-string theme_dark_1 = format(q"┃
-  h1 {
-    color                    : #FFFFFF;
-    background               : #000000;
-  }
-  p.letter {
-    color                    : #FFFFFF;
-    background               : #333333;
-  }
-┃");
-string theme_light_1 = format(q"┃
-  h1 {
-    color                    : #FFFFFF;
-    background               : #1A3A7A;
-  }
-  p.letter {
-    color                    : #FFFFFF;
-    background               : #1A3A7A;
-  }
-┃");
-      metadata_ ~= format(q"┃<!DOCTYPE html>
-<html>
-<head>
-<meta charset="utf-8">
-<title>⌘ Curated metadata - Topics</title>
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<meta name="dc.title" content= "metadata curate, Authors & Topics - information Structuring Universe, Structured information Serialised Units" />
-<meta name="dc.subject" content= "document structuring, ebook, publishing, PDF, LaTeX, XML, ODF, SQL, postgresql, sqlite, electronic book, electronic publishing, electronic document, electronic citation, data structure, citation systems, granular search, digital library" />
-<meta name="generator" content="spine" />
-<link rel="generator" href="https://sisudoc.org" />
-<link href="./css/curate.css" rel="stylesheet">
-<style TYPE="text/css">
-/* spine curate css default stylesheet */%s
-  .norm, .bold {
-    line-height              : 150%%;
-    margin-left              : 1em;
-    margin-right             : 2em;
-    margin-top               : 10px;
-    margin-bottom            : 0px;
-    text-indent              : 0mm;
-  }
-  p, h0, h1, h2, h3, h4, h5, h6, h7 {
-    display                  : block;
-    font-family              : verdana, arial, georgia, tahoma, sans-serif, helvetica, times, roman;
-    font-size                : 100%%;
-    font-weight              : normal;
-    line-height              : 150%%;
-    /* text-align            : justify; */
-    margin-left              : 1em;
-    text-indent              : 0mm;
-    margin-top               : 2px;
-    margin-bottom            : 2px;
-    margin-right             : 6px;
-    text-align               : left;
-  }
-  h0, h1, h2, h3, h4, h5, h6, h7 { text-shadow: .2em .2em .3em #999999; }
-  h1 {
-    font-size                : 120%%;
-    font-weight              : bold;
-    color                    : #FFFFFF;
-    background               : #000088;
-    margin-left              : 0em;
-  }
-  p.work {
-    font-size                : 80%%;
-    margin-left              : 5em;
-    margin-top               : 0px;
-    margin-bottom            : 0px;
-    margin-right             : 6px;
-    text-align               : left;
-  }
-  p.author {
-    font-size                : 100%%;
-    margin-left              : 2em;
-    margin-top               : 0px;
-    margin-bottom            : 0px;
-    margin-right             : 6px;
-    text-align               : left;
-  }
-  p.publication {
-    font-size                : 80%%;
-    margin-left              : 4em;
-    margin-top               : 0px;
-    margin-bottom            : 0px;
-    margin-right             : 6px;
-    text-align               : left;
-  }
-  p.letter {
-    font-weight              : bold;
-    font-size                : 60%%;
-    margin-left              : 1em;
-    margin-top               : 0px;
-    margin-bottom            : 0px;
-    margin-right             : 6px;
-    text-align               : left;
-  }
-  p.icons, .icons_center {
-    font-size                : 100%%;
-    margin-top               : 0px;
-    margin-bottom            : 0px;
-    margin-right             : 6px;
-  }
-  p.icons {
-    text-align               : left;
-  }
-  p.lev0 {
-    font-size                : 120%%;
-    margin-left              : 1em;
-  }
-  p.lev1 {
-    font-size                : 110%%;
-    margin-left              : 2em;
-  }
-  p.lev2 {
-    font-size                : 100%%;
-    margin-left              : 3em;
-  }
-  p.lev3 {
-    font-size                : 90%%;
-    margin-left              : 4em;
-  }
-  p.lev4 {
-    font-size                : 80%%;
-    margin-left              : 5em;
-  }
-  p.lev5 {
-    font-size                : 80%%;
-    margin-left              : 6em;
-  }%s
-  /* flex */
-  .flex-menu-bar {
-    display                  : -webkit-flex;
-    display                  : flex;
-    -webkit-flex-wrap        : wrap;
-    -webkit-align-items      : center;
-    align-items              : center;
-    width                    : 100%%;
-    margin-left              : 0%%;
-    margin-right             : 2%%;
-    background-color         : inherited;
-  }
-  .flex-menu-option {
-    background-color         : inherited;
-    margin-right             : 4px;
-  }
-  .flex-list {
-    display                  : -webkit-flex;
-    display                  : flex;
-    -webkit-align-items      : center;
-    display                  : block;
-    align-items              : center;
-    width                    : 100%%;
-    background-color         : inherited;
-  }
-  .flex-list-item {
-    background-color         : inherited;
-    margin                   : 4px;
-  }
-</style>
-<link rel="shortcut icon" href="../_sisu/image/rb7.ico" />
-</head>
-┃",
-  doc_matters.opt.action.css_theme_default ? theme_light_0 : theme_dark_0,
-  doc_matters.opt.action.css_theme_default ? theme_light_1 : theme_dark_1,
-) ~ "\n";
-    void metadata_write_output(M)(M doc_matters, string[] metadata_) {
-      auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
-      try {
-        if (!exists(pth_html.base)) {
-          pth_html.base.mkdirRecurse;
-        }
-        {
-          auto f = File(pth_html.fn_scroll("metadata." ~ doc_matters.src.filename), "w");
-          foreach (o; metadata_) {
-            f.writeln(o);
-          }
-        }
-        if (!exists(pth_html.base ~ "/index.html")) {
-          import doc_reform.io_out.html_snippet;
-          mixin htmlSnippet;
-          auto f = File(pth_html.base ~"/index.html", "w");
-          f.writeln(format_html_blank_page_guide_home(
-            "../../css/html_scroll.css",
-            (doc_matters.opt.action.webserver_url_doc_root.length > 0)
-              ? doc_matters.opt.action.webserver_url_doc_root
-              : doc_matters.conf_make_meta.conf.w_srv_data_root_url,
-            "../../index.html",
-          ));
-        }
-      } catch (ErrnoException ex) {
-        // Handle error
-      }
-      if (doc_matters.opt.action.vox_gt0) {
-        writeln(" ", pth_html.fn_scroll("metadata." ~ doc_matters.src.filename));
-      }
-    }
-    static auto mkup = InlineMarkup();
-    import doc_reform.io_out.html_snippet;
-    mixin htmlSnippet;
-    if (doc_matters.opt.action.debug_do) {
-      writeln(doc_matters.src.filename_base);
-      writeln("Title:       ", doc_matters.conf_make_meta.meta.title_full);
-      writeln("  Author:    ", doc_matters.conf_make_meta.meta.creator_author);
-      writeln("  Published: ", doc_matters.conf_make_meta.meta.date_published);
-      writeln("  Copyright: ", doc_matters.conf_make_meta.meta.rights_copyright);
-      writeln("  License:   ", special_characters_text(doc_matters.conf_make_meta.meta.rights_license));
-      if (doc_matters.conf_make_meta.meta.classify_topic_register_arr.length > 0) {
-        foreach (topic; doc_matters.conf_make_meta.meta.classify_topic_register_arr.sort!("toUpper(a) < toUpper(b)", SwapStrategy.unstable)) {
-          string[] subject_tree = topic.split(mkup.sep);
-          if (subject_tree.length > 0) { writeln("  ",         subject_tree[0]); }
-          if (subject_tree.length > 1) { writeln("    ",       subject_tree[1]); }
-          if (subject_tree.length > 2) { writeln("      ",     subject_tree[2]); }
-          if (subject_tree.length > 3) { writeln("        ",   subject_tree[3]); }
-          if (subject_tree.length > 4) { writeln("          ", subject_tree[4]); }
-        }
-      }
-    }
-    auto pth_html = spinePathsHTML!()(doc_matters.output_path, doc_matters.src.language);
-    auto pth_epub = spinePathsEPUB!()(doc_matters.output_path, doc_matters.src.language);
-    auto pth_pdf  = spinePathsPDF!()(doc_matters);
-    auto pth_pod =  spinePathsPods!()(doc_matters);
-    metadata_ ~= format(q"┃<body lang="en" xml:lang="en">
-    <a name="top" id="top"></a>
-    <a name="up" id="up"></a>
-    <a name="start" id="start"></a>
-    ┃");
-    metadata_ ~= "<div class=\"flex-menu-bar\"><div class=\"flex-menu-option\">";
-    if (doc_matters.opt.action.html_link_curate) {
-      metadata_ ~= format(q"┃<p class="icons">[<a href="%s" class="lnkicon">&nbsp;<b>⟰</b>&nbsp;HOME&nbsp;</a>&nbsp;|&nbsp;<a href="../../index.html" class="lnkicon">&nbsp;≅&nbsp;Collection&nbsp;</a>]&nbsp;&nbsp;[
-       <a href="../../authors.html" class="lnkicon">&nbsp;&#x1F58B;&nbsp;Authors&nbsp;</a> |
-       <a href="../../topics.html" class="lnkicon">&nbsp;⌘&nbsp;Topics&nbsp;</a>]</p>
-    ┃",
-    (doc_matters.opt.action.webserver_url_doc_root.length > 0)
-      ? doc_matters.opt.action.webserver_url_doc_root
-      : doc_matters.conf_make_meta.conf.w_srv_data_root_url
-      , // HOME index.html equivalent _cfg.www_url_doc_root,
-    );
-    } else {
-      metadata_ ~= format(q"┃<p class="icons">[<a href="../../../index.html" class="lnkicon">&nbsp;≅&nbsp;<b>HOME</b>&nbsp;</a>&nbsp;<a href="../../index.html" class="lnkicon">&nbsp;≅&nbsp;Collection&nbsp;</a>]
-    ┃");
-    }
-    metadata_ ~= "</div>" ~ inline_search_form(doc_matters) ~ "</div><hr />";
-    if (!(doc_matters.conf_make_meta.meta.title_full.empty)) {
-      metadata_ ~= "<p class=\"lev0\">Title: <b><a href=\"" ~ doc_matters.src.filename_base ~ "/toc.html\">" ~ doc_matters.conf_make_meta.meta.title_full       ~ "</a></b></p>";
-    } else if (doc_matters.opt.action.debug_do || doc_matters.opt.action.vox_gt2) {
-      writeln("ERROR no Title information provided in document header ", doc_matters.src.filename_base);
-    }
-    if (!(doc_matters.conf_make_meta.meta.creator_author.empty)) {
-      if (doc_matters.opt.action.html_link_curate) {
-        metadata_ ~= "<p class=\"lev1\">Author: <b><a href=\"../../authors.html#" ~ doc_matters.conf_make_meta.meta.creator_author_surname.translate([' ' : "_"]) ~ "\">"
-                                                   ~ doc_matters.conf_make_meta.meta.creator_author   ~ "</a></b></p>";
-      } else {
-        metadata_ ~= "<p class=\"lev1\">Author: <b>"
-                                                   ~ doc_matters.conf_make_meta.meta.creator_author   ~ "</b></p>";
-      }
-    } else if (doc_matters.opt.action.debug_do || doc_matters.opt.action.vox_gt2) {
-      writeln("ERROR no Author information provided in document header ", doc_matters.src.filename_base);
-    }
-    metadata_ ~= "<p class=\"lev1\">Published: "   ~ doc_matters.conf_make_meta.meta.date_published   ~ "</p>";
-    if (!(doc_matters.conf_make_meta.meta.rights_copyright.empty)) {
-      metadata_ ~= "<p class=\"lev1\">Copyright: "   ~ special_characters_text(doc_matters.conf_make_meta.meta.rights_copyright) ~ "</p>";
-    } else if (doc_matters.opt.action.debug_do || doc_matters.opt.action.vox_gt2) {
-      writeln("WARNING no Copyright information provided in document header ", doc_matters.src.filename_base);
-    }
-    if (!(doc_matters.conf_make_meta.meta.rights_license.empty)) {
-      metadata_ ~= "<p class=\"lev1\">License:   "   ~ special_characters_text(doc_matters.conf_make_meta.meta.rights_license) ~ "</p>";
-    } else if (doc_matters.opt.action.debug_do || doc_matters.opt.action.vox_gt2) {
-      writeln("WARNING no License information provided in document header ", doc_matters.src.filename_base);
-    }
-    if (!(doc_matters.conf_make_meta.meta.notes_summary.empty)) {
-      metadata_ ~= "<hr /><p class=\"lev0\">Summary:</p><p class=\"lev1\">"   ~ special_characters_text(doc_matters.conf_make_meta.meta.notes_summary) ~ "</p>";
-    } else if (doc_matters.opt.action.debug_do) {
-      writeln("WARNING no summary of text provided in document header ", doc_matters.src.filename_base);
-    }
-    metadata_ ~= "<hr /><p class=\"lev1\">source: "      ~ doc_matters.src.filename_base ~ "</p>";
-    if (doc_matters.opt.action.html_link_markup_source) {
-      metadata_ ~= "<p class=\"lev1\">●&nbsp;&nbsp;markup source:&nbsp;&nbsp;the&nbsppod&nbsp[<a href=\"../../" ~ pth_pod.internal_base ~ "/" ~ doc_matters.src.filename_base ~ ".zip\" class=\"lnkicon\">"
-                   ~ "&nbsp;🫛&nbsp;zipped&nbsp;</a>|&nbsp;"
-                   ~ "<a href=\"../../" ~ pth_pod.internal_base ~ "/" ~ doc_matters.src.filename_base ~ "/\" class=\"lnkicon\">"
-                   ~ "&nbsp;🫛&nbsp;tree&nbsp;</a>]&nbsp;";
-    }
-    metadata_ ~= "<p class=\"lev1\">●&nbsp;&nbsp;outputs:&nbsp;&nbsp;[&nbsp;html:&nbsp;<a href=\""    ~ doc_matters.src.filename_base ~ ".html\" class=\"lnkicon\">"
-                 ~ "&nbsp;▤&nbsp;scroll&nbsp;</a>&nbsp;"
-                 ~ "|<a href=\""    ~ doc_matters.src.filename_base ~ "/toc.html\" class=\"lnkicon\">"
-                 ~ "&nbsp;※&nbsp;seg&nbsp;</a>]&nbsp;&nbsp;&nbsp;"
-                 ~ "[<a href=\"../../" ~ pth_epub.internal_base ~ "/" ~ doc_matters.src.filename_base ~ "." ~ doc_matters.src.language ~ ".epub\" class=\"lnkicon\">"
-                 ~ "&nbsp;◆&nbsp;epub&nbsp;</a>]&nbsp;&nbsp;&nbsp;";
-    if ((doc_matters.opt.action.html_link_pdf) || (doc_matters.opt.action.html_link_pdf_a4)) {
-      metadata_ ~=  "[&nbsp;pdf:&nbsp;<a href=\"../../pdf/"
-                 ~ doc_matters.src.filename_base
-                 ~ "." ~ doc_matters.src.language ~ ".a4.portrait.pdf\" class=\"lnkicon\">"
-                 ~ "&nbsp;□&nbsp;a4&nbsp;</a>&nbsp"
-                 ~ "|<a href=\"../../pdf/"
-                 ~ doc_matters.src.filename_base
-                 ~ "." ~ doc_matters.src.language ~ ".letter.portrait.pdf\" class=\"lnkicon\">"
-                 ~ "&nbsp;□&nbsp;U.S.&nbsp;letter&nbsp;</a>]&nbsp";
-    } else if (doc_matters.opt.action.html_link_pdf_a4) {
-      metadata_ ~=  "[<a href=\"../../pdf/"
-                 ~ doc_matters.src.filename_base
-                 ~ "." ~ doc_matters.src.language ~ ".a4.portrait.pdf\" class=\"lnkicon\">"
-                 ~ "&nbsp;□&nbsp;pdf&nbsp;(a4)&nbsp;</a>]&nbsp";
-    } else if (doc_matters.opt.action.html_link_pdf_letter) {
-      metadata_ ~=  "[<a href=\"../../pdf/"
-                 ~ doc_matters.src.filename_base
-                 ~ "." ~ doc_matters.src.language ~ ".letter.portrait.pdf\" class=\"lnkicon\">"
-                 ~ "&nbsp;□&nbsp;pdf&nbsp;(U.S.&nbsp;letter)&nbsp;</a>]&nbsp";
-    }
-    metadata_ ~=  "</p>";
-    if (doc_matters.conf_make_meta.meta.classify_topic_register_arr.length > 0) {
-      metadata_ ~= "<hr /><p class=\"lev0\">Topics:</p>";
-      string[] _top = ["", "", "", "", ""];
-      foreach (topic; doc_matters.conf_make_meta.meta.classify_topic_register_arr.sort!("toUpper(a) < toUpper(b)", SwapStrategy.unstable)) {
-        string[] subject_tree = topic.split(mkup.sep);
-        if (subject_tree.length > 0) {
-          if (subject_tree[0] != _top[0]) {
-            _top[0] = subject_tree[0];
-            if (doc_matters.opt.action.html_link_curate) {
-              metadata_ ~=
-                "<p class=\"lev1\"><a href=\"../../topics.html#"
-                  ~ subject_tree[0].translate([' ' : "_"]) ~ "\">"
-                  ~ subject_tree[0]
-                  ~ "</a></p>";
-            } else {
-              metadata_ ~=
-                "<p class=\"lev1\">"  ~ subject_tree[0] ~ "</p>";
-            }
-          }
-          if (subject_tree.length > 1) {
-            if (subject_tree[1] != _top[1]) {
-              _top[1] = subject_tree[1];
-              _top[2] = ""; _top[3] = ""; _top[4] = "";
-              if (doc_matters.opt.action.html_link_curate) {
-                metadata_ ~=
-                  "<p class=\"lev2\"><a href=\"../../topics.html#"
-                    ~ subject_tree[0].translate([' ' : "_"]) ~ "."
-                    ~ subject_tree[1].translate([' ' : "_"]) ~ "\">"
-                    ~ subject_tree[1]
-                    ~ "</a></p>";
-              } else {
-                metadata_ ~=
-                  "<p class=\"lev2\">"  ~ subject_tree[1] ~ "</p>";
-              }
-            }
-            if (subject_tree.length > 2) {
-              if (subject_tree[2] != _top[2]) {
-                _top[2] = subject_tree[2];
-                _top[3] = ""; _top[4] = "";
-                if (doc_matters.opt.action.html_link_curate) {
-                  metadata_ ~=
-                    "<p class=\"lev3\"><a href=\"../../topics.html#"
-                      ~ subject_tree[0].translate([' ' : "_"]) ~ "."
-                      ~ subject_tree[1].translate([' ' : "_"]) ~ "."
-                      ~ subject_tree[2].translate([' ' : "_"]) ~ "\">"
-                      ~ subject_tree[2]
-                      ~ "</a></p>";
-                } else {
-                  metadata_ ~=
-                    "<p class=\"lev3\">"  ~ subject_tree[2] ~ "</p>";
-                }
-              }
-              if (subject_tree.length > 3) {
-                if (subject_tree[3] != _top[3]) {
-                  _top[3] = subject_tree[3];
-                  _top[4] = "";
-                  if (doc_matters.opt.action.html_link_curate) {
-                    metadata_ ~=
-                      "<p class=\"lev4\"><a href=\"../../topics.html#"
-                        ~ subject_tree[0].translate([' ' : "_"]) ~ "."
-                        ~ subject_tree[1].translate([' ' : "_"]) ~ "."
-                        ~ subject_tree[2].translate([' ' : "_"]) ~ "."
-                        ~ subject_tree[3].translate([' ' : "_"]) ~ "\">"
-                        ~ subject_tree[3]
-                        ~ "</a></p>";
-                  } else {
-                    metadata_ ~=
-                      "<p class=\"lev4\">"  ~ subject_tree[3] ~ "</p>";
-                  }
-                }
-                if (subject_tree.length > 4) {
-                  if (subject_tree[4] != _top[4]) {
-                    _top[4] = subject_tree[4];
-                    if (doc_matters.opt.action.html_link_curate) {
-                      metadata_ ~=
-                        "<p class=\"lev5\"><a href=\"../../topics.html#"
-                          ~ subject_tree[0].translate([' ' : "_"]) ~ "."
-                          ~ subject_tree[1].translate([' ' : "_"]) ~ "."
-                          ~ subject_tree[2].translate([' ' : "_"]) ~ "."
-                          ~ subject_tree[3].translate([' ' : "_"]) ~ "."
-                          ~ subject_tree[4].translate([' ' : "_"]) ~ "\">"
-                          ~ subject_tree[4]
-                          ~ "</a></p>";
-                    } else {
-                      metadata_ ~=
-                        "<p class=\"lev5\">"  ~ subject_tree[4] ~ "</p>";
-                    }
-                  }
-                }
-              }
-            }
-          }
-        }
-      }
-    } else if (doc_matters.opt.action.debug_do) {
-      writeln("WARNING no topic_register classification of text provided in document header ", doc_matters.src.filename_base);
-    }
-    metadata_write_output(doc_matters, metadata_);
-  }
-}
-- 
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