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/epub3.d | 810 ------------------------------------------
 1 file changed, 810 deletions(-)
 delete mode 100644 src/doc_reform/io_out/epub3.d

(limited to 'src/doc_reform/io_out/epub3.d')

diff --git a/src/doc_reform/io_out/epub3.d b/src/doc_reform/io_out/epub3.d
deleted file mode 100644
index a42941a..0000000
--- a/src/doc_reform/io_out/epub3.d
+++ /dev/null
@@ -1,810 +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.epub3;
-@safe:
-template outputEPub3() {
-  import
-    std.file,
-    std.outbuffer,
-    std.uri,
-    std.zip,
-    std.conv : to;
-  import
-    doc_reform.io_out,
-    doc_reform.io_out.rgx,
-    doc_reform.io_out.rgx_xhtml,
-    doc_reform.io_out.create_zip_file,
-    doc_reform.io_out.xmls,
-    doc_reform.io_out.xmls_css;
-  mixin InternalMarkup;
-  mixin outputXHTMLs;
-  static auto rgx = RgxO();
-  static auto rgx_xhtml = RgxXHTML();
-  string special_characters_text(string _txt) {
-    _txt = _txt
-      .replaceAll(rgx_xhtml.ampersand,    "&amp;")  // "&#38;"
-      .replaceAll(rgx_xhtml.quotation,    "&quot;") // "&#34;"
-      .replaceAll(rgx_xhtml.less_than,    "&lt;")   // "&#60;"
-      .replaceAll(rgx_xhtml.greater_than, "&gt;")   // "&#62;"
-      .replaceAll(rgx.br_line,            "<br />")
-      .replaceAll(rgx.br_line_inline,     "<br />")
-      .replaceAll(rgx.br_line_spaced,     "<br />\n<br />")
-      .replaceAll(rgx.nbsp_char,          " ");
-    return _txt;
-  }
-  string epub3_mimetypes() {
-    string o;
-    o = format(q"┃application/epub+zip┃") ~ "\n";
-    return o;
-  }
-  string epub3_container_xml() {
-    string o;
-    o = format(q"┃<?xml version="1.0" encoding="utf-8"?>┃") ~ "\n";
-    o ~= format(q"┃<container version="1.0"
-  xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
-  <rootfiles>
-    <rootfile full-path="OEBPS/content.opf"
-      media-type="application/oebps-package+xml" />
-  </rootfiles>┃") ~ "\n</container>\n";
-    return o;
-  }
-  string epub3_oebps_content(D,M,P)(D doc_abstraction, M doc_matters, P parts) {
-    auto xhtml_format = outputXHTMLs();
-    auto pth_epub3 = spinePathsEPUB!()(doc_matters.output_path, doc_matters.src.language);
-    string _uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO sort uuid in doc_matters!
-    string content = format(q"┃<?xml version="1.0" encoding="utf-8"?>
-  <package version="3.0" xmlns="http://www.idpf.org/2007/opf" unique-identifier="uid" prefix="rendition: http://www.idpf.org/vocab/rendition/#">
-    <metadata
-      xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"
-      xmlns:dcterms="https://purl.org/dc/terms/"
-      xmlns:dc="https://purl.org/dc/elements/1.1/"
-      unique-identifier="urn:uuid:%s" version="2.0">
-      <dc:title id="title">%s</dc:title>
-      <meta refines="#title" property="title-type">main</meta>
-      <dc:title id="subtitle">%s</dc:title>
-      <meta refines="#subtitle" property="title-type">subtitle</meta>
-      <dc:creator file-as="%s" id="aut">%s</dc:creator>
-      <dc:language>%s</dc:language>
-      <dc:date id="published">%s</dc:date>
-      <dc:rights>Copyright: %s</dc:rights>
-      <dc:identifier scheme="URI">%s</dc:identifier>
-      <dc:identifier id="bookid">urn:uuid:%s</dc:identifier>
-    </metadata>
-    <manifest>
-      <item id="css" href="%s" media-type="text/css"/>
-      <item id="nav" href="toc_nav.xhtml" media-type="application/xhtml+xml" properties="nav" />
-  ┃",
-      _uuid,
-      xhtml_format.special_characters_text(doc_matters.conf_make_meta.meta.title_main),
-      (doc_matters.conf_make_meta.meta.title_sub.empty)
-        ? "" : xhtml_format.special_characters_text(doc_matters.conf_make_meta.meta.title_sub),
-      (doc_matters.conf_make_meta.meta.creator_author.empty)
-        ? "" : xhtml_format.special_characters_text(doc_matters.conf_make_meta.meta.creator_author),
-      (doc_matters.conf_make_meta.meta.creator_author.empty)
-        ? "" : xhtml_format.special_characters_text(doc_matters.conf_make_meta.meta.creator_author),
-      doc_matters.src.language,                                   // language, fix (needed in dochead metadata)
-      (doc_matters.conf_make_meta.meta.date_published.empty)
-        ? "" : xhtml_format.special_characters_date(doc_matters.conf_make_meta.meta.date_published),
-      (doc_matters.conf_make_meta.meta.rights_copyright.empty)
-        ? "" : xhtml_format.special_characters_text(doc_matters.conf_make_meta.meta.rights_copyright),
-      _uuid,
-      _uuid,
-      (pth_epub3.fn_oebps_css).chompPrefix("OEBPS/"),
-    );
-    content ~= parts["manifest_documents"];
-    // TODO sort jpg & png
-    foreach (image; doc_matters.srcs.image_list) {
-      content ~= format(q"┃      <item id="%s" href="%s/%s" media-type="image/%s" />
-  ┃",
-        image.baseName.stripExtension,
-        (pth_epub3.doc_oebps_image).chompPrefix("OEBPS/"),
-        image,
-        image.extension.chompPrefix("."),
-      );
-    }
-    content ~= "  " ~ "</manifest>"         ~ "\n  ";
-    content ~= "  " ~ "<spine>"             ~ "\n  ";
-    content ~= parts["spine"];
-    content ~= "  " ~ "</spine>"            ~ "\n  ";
-    content ~= "  " ~ "<guide>"             ~ "\n  ";
-    content ~= parts["guide"];
-    content ~= "  " ~ "</guide>"            ~ "\n  ";
-    content ~= ""   ~ "</package>";
-    debug(epubmanifest) {
-      foreach (section; doc_matters.has.keys_seq.seg) { // TODO
-        foreach (obj; doc_abstraction[section]) {
-          if (obj.metainfo.is_a == "heading") {
-            if (obj.metainfo.heading_lev_markup == 4) {
-              writefln(
-                "%s~ [%s.xhtml] %s",
-                obj.marked_up_level,
-                obj.tags.segment_anchor_tag_epub,
-                obj.text
-              );
-            } else if (obj.metainfo.heading_lev_markup > 4) {
-              writefln(
-                "%s~ [%s.xhtml#%s] %s",
-                obj.marked_up_level,
-                obj.tags.segment_anchor_tag_epub,
-                obj.metainfo.object_number,
-                obj.text
-              );
-            }
-          }
-        }
-      }
-    }
-    return content;
-  }
-  string epub3_oebps_toc_nav_xhtml(D,I)(D doc_abstraction, I doc_matters) {
-    enum DomTags { none, open, close, close_and_open, open_still, }
-    auto markup = InlineMarkup();
-    static auto rgx = RgxO();
-    static auto rgx_xhtml = RgxXHTML();
-    string toc;
-    bool _new_title_set = false;
-    string toc_head = format(q"┃<html xmlns="https://www.w3.org/1999/xhtml"
-      xmlns:epub="http://www.idpf.org/2007/ops">
-  <head>
-    <title>%s</title>
-  </head>
-  <body>
-  <section epub:type="frontmatter toc">
-    <header>
-      <h1>Contents</h1>
-    </header>
-    <nav epub:type="toc" id="toc">
-  ┃",
-            (doc_matters.conf_make_meta.meta.title_full).special_characters_text,
-          );
-    string _toc_nav_tail = "";
-    // writeln(doc_matters.has.keys_seq.seg); // DEBUG line
-    foreach (sect; doc_matters.has.keys_seq.seg) {
-      foreach (obj; doc_abstraction[sect]) {
-        if ((sect == "head") && (obj.metainfo.is_a == "heading")) {
-          toc = toc_head;
-        }
-        if (sect == "tail") { // skip
-        } else if ((sect != "tail") && (obj.metainfo.is_a == "heading")) {
-          string _txt = obj.text.replaceAll(rgx.inline_notes_al_gen, "").strip;
-          foreach_reverse (n; 0 .. 7) {
-            string k = n.to!string;
-            switch (obj.metainfo.dom_structure_collapsed_tags_status[n]) {
-            case DomTags.none :
-              break;
-            case DomTags.close :
-              toc ~= markup.indent_by_spaces_provided((n + 1), "    ") ~ "</li>" ~ "\n";
-              toc ~= markup.indent_by_spaces_provided(n, "    ") ~ "</ol>" ~ "\n";
-              break;
-            case DomTags.close_and_open :
-              toc ~= markup.indent_by_spaces_provided((n + 1), "    ") ~ "</li>" ~ "\n";
-              goto default;
-            case DomTags.open :
-              if (!(_new_title_set)) {
-                toc ~= markup.indent_by_spaces_provided(n, "    ") ~ "<ol>" ~ "\n";
-              }
-              goto default;
-            default :
-              if ((obj.metainfo.dom_structure_collapsed_tags_status[n] == DomTags.close_and_open ||
-                   obj.metainfo.dom_structure_collapsed_tags_status[n] == DomTags.open
-              )) {
-                if ((sect == "head") && (obj.metainfo.is_a == "heading")) {
-                  toc ~= format(q"┃      <li>
-        <a href="_the_title.xhtml">%s</a>
-      </li>┃",
-                    obj.text
-                      .replaceAll(rgx.inline_notes_al_gen, "")
-                      .replaceAll(rgx.br_line_inline, "<br />")
-                      .strip,
-                  );
-                  toc ~= "\n";
-                  _new_title_set = true;
-                } else {
-                  _new_title_set = false;
-                  string _hashtag = "";
-                  if ((obj.metainfo.heading_lev_markup <= 4) && (obj.metainfo.ocn == 0)) {
-                    _hashtag = "#" ~ obj.metainfo.ocn.to!string;
-                  }
-                  string _href = "<a href=\""
-                    ~ obj.tags.segment_anchor_tag_epub ~ ".xhtml"
-                    ~ _hashtag
-                    ~ "\">";
-                  toc ~= markup.indent_by_spaces_provided((n + 1), "    ") ~ "<li>" ~ "\n"
-                  ~ markup.indent_by_spaces_provided((n + 2), "    ")
-                  ~ _href ~ _txt.special_characters_text ~ "</a>" ~ "\n";
-                }
-              }
-              break;
-            }
-            if (doc_matters.has.keys_seq.seg[doc_matters.has.keys_seq.seg.length - 2] == sect) {
-              // writeln(n, ": ", sect, ": ", _txt, " - ", obj.metainfo.dom_structure_collapsed_tags_status); // DEBUG
-              // read last heading (heading prior to closing) and determine what those instructions imply still need to be done
-              // CLOSE // DomTags { 0 none, 1 open, 2 close, 3 close_and_open, 4 open_still, }
-              if (n == 6) {_toc_nav_tail = "";}
-              switch (obj.metainfo.dom_structure_collapsed_tags_status[n]) {
-              case 0: case 2:
-              // case DomTags.none: case DomTags.close:
-                break;
-              case 1: case 3: case 4:
-              // case DomTags.open: case DomTags.close_and_open: case DomTags.open_still:
-                if (n != 0) {
-                  _toc_nav_tail ~= "   " ~ markup.indent_by_spaces_provided((n + 1), "  ") ~ "</li>" ~ "\n";
-                  _toc_nav_tail ~= "   " ~ markup.indent_by_spaces_provided(n, "  ") ~ "</ol>" ~ "\n";
-                }
-                break;
-              default :
-                break;
-              }
-              if (n == 0) {
-                _toc_nav_tail ~="  </nav>
-  </section>
-  </body>
-  </html>\n";
-              }
-            }
-          }
-        }
-      }
-    }
-    toc ~= _toc_nav_tail;
-    return toc;
-  }
-  @system void outputEPub3(D,I)(
-    const D    doc_abstraction,
-          I    doc_matters,
-  ) {
-    mixin spineRgxOut;
-    mixin spineRgxXHTML;
-    auto xhtml_format = outputXHTMLs();
-    static auto rgx = RgxO();
-    static auto rgx_xhtml = RgxXHTML();
-    string[] doc;
-    string segment_filename;
-    string[] top_level_headings = ["","","",""];
-    string[string] oepbs_content_parts;
-    string suffix = ".xhtml";
-    struct writeOut { /+ epub specific documents +/
-      /+ fixed output +/
-      string mimetypes;
-      string meta_inf_container_xml;
-      string oebps_toc_nav_xhtml;
-      /+ variable output +/
-      string oebps_content_opf;
-      string[][string] doc_epub3;
-      string[][string] doc_epub3_endnotes;
-      string[] doc_parts;
-    }
-    auto epubWrite = writeOut();
-    foreach (section; doc_matters.has.keys_seq.seg) {
-      foreach (obj; doc_abstraction[section]) {
-        string _txt = xhtml_format.special_characters_breaks_indents_bullets(obj);
-        if (obj.metainfo.is_a == "heading") {
-          assert(section == "head" || "toc" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb" || "tail");
-          switch (obj.metainfo.heading_lev_markup) {
-          case 0: .. case 3:
-            /+ fill buffer, and replace with new levels from 1 to 3 +/
-            switch (obj.metainfo.heading_lev_markup) {
-            case 0:
-              top_level_headings[0] = "";
-              top_level_headings[1] = "";
-              top_level_headings[2] = "";
-              top_level_headings[3] = "";
-              goto default;
-            case 1:
-              top_level_headings[1] = "";
-              top_level_headings[2] = "";
-              top_level_headings[3] = "";
-              goto default;
-            case 2:
-              top_level_headings[2] = "";
-              top_level_headings[3] = "";
-              goto default;
-            case 3:
-              top_level_headings[3] = "";
-              goto default;
-            default:
-              epubWrite.doc_parts ~= obj.tags.segment_anchor_tag_epub;
-              epubWrite.doc_epub3[obj.tags.segment_anchor_tag_epub] ~= xhtml_format.epub3_seg_head(doc_matters);
-              Tuple!(string, string[]) t = xhtml_format.heading_seg(_txt, obj, doc_matters, suffix, "epub");
-              epubWrite.doc_epub3[obj.tags.segment_anchor_tag_epub] ~= t[0];
-              epubWrite.doc_epub3_endnotes[obj.tags.segment_anchor_tag_epub] ~= t[1];
-              break;
-            }
-            break;
-          case 4:
-            segment_filename = obj.tags.segment_anchor_tag_epub;
-            epubWrite.doc_epub3[segment_filename] ~= xhtml_format.epub3_seg_head(doc_matters);
-            Tuple!(string, string[]) t = xhtml_format.heading_seg(_txt, obj, doc_matters, suffix, "epub");
-            epubWrite.doc_epub3[segment_filename] ~= t[0];
-            epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-            break;
-          case 5: .. case 7:
-            Tuple!(string, string[]) t = xhtml_format.heading_seg(_txt, obj, doc_matters, suffix, "epub");
-            epubWrite.doc_epub3[segment_filename] ~= t[0];
-            epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-            break;
-          case 8: .. case 9:
-            { /+ debug +/
-              if (doc_matters.opt.action.debug_do_epub) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
-                writeln(__FILE__, ":", __LINE__, ": ", obj.text);
-              }
-            }
-            break;
-          default:
-            { /+ debug +/
-              if (doc_matters.opt.action.debug_do_epub) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
-              }
-            }
-            break;
-          }
-        } else {
-          assert(section == "head" || "toc" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb" || "tail");
-          Tuple!(string, string[]) t;
-          switch (obj.metainfo.is_of_part) {
-          case "frontmatter":             assert(section == "head" || "toc");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "toc":
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              default:
-                { /+ debug +/
-                  if (doc_matters.opt.action.debug_do_epub) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do_epub) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "body":                    assert(section == "body");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "para":
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              default:
-                { /+ debug +/
-                  if (doc_matters.opt.action.debug_do_epub) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            case "block":
-              switch (obj.metainfo.is_a) {
-              case "quote":
-                t = xhtml_format.quote_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0].to!string;
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "group":
-                t = xhtml_format.group_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0].to!string;
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "block":
-                t = xhtml_format.block_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0].to!string;
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "poem":
-                break;
-              case "verse":
-                t = xhtml_format.verse_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0].to!string;
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "code":
-                epubWrite.doc_epub3[segment_filename] ~= xhtml_format.code(_txt, obj, doc_matters);
-                break;
-              case "table":
-                epubWrite.doc_epub3[segment_filename] ~= xhtml_format.table(_txt, obj, doc_matters);
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= "";
-                break;
-              default:
-                { /+ debug +/
-                  if (doc_matters.opt.action.debug_do_epub) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do_epub) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "backmatter":
-            assert(section == "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb" || "tail");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "endnote":             assert(section == "endnotes");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                break;
-              case "glossary":            assert(section == "glossary");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "bibliography":        assert(section == "bibliography");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "bookindex":           assert(section == "bookindex");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "blurb":               assert(section == "blurb");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              case "tail":                assert(section == "tail");
-                t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                epubWrite.doc_epub3_endnotes[segment_filename] ~= t[1];
-                break;
-              default:
-                { /+ debug +/
-                  if (doc_matters.opt.action.debug_do_epub) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do_epub) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "comment":
-            break;
-          default:
-            { /+ debug +/
-              if (doc_matters.opt.action.debug_do_epub) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part);
-              }
-            }
-            break;
-          }
-        }
-        if (obj.metainfo.is_a == "heading") {
-          // assert(obj.text.length > 0); // check assertion
-          if (obj.metainfo.heading_lev_markup <= 4) {
-            oepbs_content_parts["manifest_documents"] ~=
-              format(q"┃<item id="%s.xhtml" href="%s.xhtml" media-type="application/xhtml+xml" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-              obj.tags.segment_anchor_tag_epub,
-            );
-            oepbs_content_parts["spine"] ~=
-              format(q"┃<itemref idref="%s.xhtml" linear="yes" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-            );
-            oepbs_content_parts["guide"] ~=
-              format(q"┃<reference type="%s" href="%s" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-              obj.tags.segment_anchor_tag_epub,
-            );
-          } else if (obj.metainfo.heading_lev_markup > 4) {
-            oepbs_content_parts["manifest_documents"] ~=
-              format(q"┃<item id="%s.xhtml#%s" href="%s.xhtml#%s" media-type="application/xhtml+xml" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-              obj.metainfo.object_number,
-              obj.tags.segment_anchor_tag_epub,
-              obj.metainfo.object_number,
-            );
-            oepbs_content_parts["spine"] ~=
-              format(q"┃<itemref idref="%s.xhtml#%s" linear="yes" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-              obj.metainfo.object_number,
-            );
-            oepbs_content_parts["guide"] ~=
-              format(q"┃<reference type="%s#%s" href="%s#%s" />
-              ┃",
-              obj.tags.segment_anchor_tag_epub,
-              obj.metainfo.object_number,
-              obj.tags.segment_anchor_tag_epub,
-              obj.metainfo.object_number,
-            );
-          }
-        }
-      }
-    }
-    /+ epub specific documents +/
-    epubWrite.mimetypes              = epub3_mimetypes;
-    epubWrite.meta_inf_container_xml = epub3_container_xml;
-    epubWrite.oebps_toc_nav_xhtml    = doc_abstraction.epub3_oebps_toc_nav_xhtml(doc_matters);
-    epubWrite.oebps_content_opf      = doc_abstraction.epub3_oebps_content(doc_matters, oepbs_content_parts);
-    epubWrite.epub3_write_output_files(doc_matters);
-  }
-  @system void epub3_write_output_files(W,M)(
-    W epub_write,
-    M doc_matters,
-  ) {
-    debug(asserts) {
-      static assert(is(typeof(epub_write.doc_epub3)              == string[][string]));
-      static assert(is(typeof(epub_write.mimetypes)              == string));
-      static assert(is(typeof(epub_write.meta_inf_container_xml) == string));
-      static assert(is(typeof(epub_write.oebps_toc_nav_xhtml)    == string));
-      static assert(is(typeof(epub_write.oebps_content_opf)      == string));
-    }
-    static auto rgx = RgxO();
-    static auto rgx_xhtml = RgxXHTML();
-    auto pth_epub3 = spinePathsEPUB!()(doc_matters.output_path, doc_matters.src.language);
-    auto xhtml_format = outputXHTMLs();
-    /+ zip file +/
-    auto fn_epub = pth_epub3.epub_file(doc_matters.src.filename);
-    auto zip = new ZipArchive(); // ZipArchive zip = new ZipArchive();
-    /+ zip archive member files +/
-    void EPUBzip()(string contents, string fn) {
-      auto zip_arc_member_file = new ArchiveMember();
-      zip_arc_member_file.name = fn;
-      auto zip_data = new OutBuffer();
-      (doc_matters.opt.action.debug_do_epub)
-      ? zip_data.write(contents.dup)
-      : zip_data.write(contents.dup
-        .replaceAll(rgx.spaces_line_start, "")
-        .replaceAll(rgx.newline, " ")
-        .strip
-      );
-      zip_arc_member_file.expandedData = zip_data.toBytes();
-      zip.addMember(zip_arc_member_file);
-      createZipFile!()(fn_epub, zip.build());
-    }
-    try {
-      if (!exists(pth_epub3.base)) {
-        pth_epub3.base.mkdirRecurse;
-      }
-      if (!exists(pth_epub3.base ~ "/index.html")) {
-        import doc_reform.io_out.html_snippet;
-        mixin htmlSnippet;
-        auto f = File(pth_epub3.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",
-        ));
-      }
-      { /+ debug +/
-        if (doc_matters.opt.action.debug_do_epub) {
-          if (!exists(pth_epub3.dbg_doc_meta_inf(doc_matters.src.filename))) {
-            pth_epub3.dbg_doc_meta_inf(doc_matters.src.filename).mkdirRecurse;
-          }
-          if (!exists(pth_epub3.dbg_doc_oebps_css(doc_matters.src.filename))) {
-            pth_epub3.dbg_doc_oebps_css(doc_matters.src.filename).mkdirRecurse;
-          }
-          if (!exists(pth_epub3.dbg_doc_oebps_image(doc_matters.src.filename))) {
-            pth_epub3.dbg_doc_oebps_image(doc_matters.src.filename).mkdirRecurse;
-          }
-        }
-      }
-      { /+ OEBPS/[segments].xhtml (the document contents) +/
-        foreach (seg_filename; doc_matters.has.segnames_lv_0_to_4) {
-          string fn = pth_epub3.fn_oebps_content_xhtml(seg_filename);
-          auto zip_arc_member_file = new ArchiveMember();
-          zip_arc_member_file.name = fn;
-          auto zip_data = new OutBuffer();
-          { /+ debug +/
-            if (doc_matters.opt.action.debug_do_epub) {
-              string fn_dbg = pth_epub3.dbg_fn_oebps_content_xhtml(doc_matters.src.filename, seg_filename);
-              auto f = File(fn_dbg, "w");
-              foreach (docseg; epub_write.doc_epub3[seg_filename]) {
-                f.writeln(docseg);
-              }
-              foreach (docseg; epub_write.doc_epub3_endnotes[seg_filename]) {
-                f.writeln(docseg);
-              }
-              f.writeln(xhtml_format.tail(doc_matters));
-            }
-          }
-          foreach (docseg; epub_write.doc_epub3[seg_filename]) {
-            zip_data.write(docseg.dup);
-          }
-          foreach (docseg; epub_write.doc_epub3_endnotes[seg_filename]) {
-            zip_data.write(docseg.dup);
-          }
-          zip_data.write(xhtml_format.tail(doc_matters).dup);
-          zip_arc_member_file.expandedData = zip_data.toBytes();
-          zip.addMember(zip_arc_member_file);
-          /+ create the zip file +/
-          createZipFile!()(fn_epub, zip.build());
-        }
-      }
-      string fn;
-      string fn_dbg;
-      File f;
-      { /+ mimetypes (identify zip file type) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do_epub) {
-            fn_dbg = pth_epub3.dbg_fn_mimetypes(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(epub_write.mimetypes);
-          }
-        }
-        fn = pth_epub3.fn_mimetypes;
-        EPUBzip(epub_write.mimetypes, fn);
-      }
-      { /+  META-INF/container.xml (identify doc root) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do_epub) {
-            fn_dbg = pth_epub3.dbg_fn_dmi_container_xml(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(epub_write.meta_inf_container_xml);
-          }
-        }
-        fn = pth_epub3.fn_dmi_container_xml;
-        EPUBzip(epub_write.meta_inf_container_xml, fn);
-      }
-      { /+ OEBPS/toc_nav.xhtml (navigation toc epub3) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do_epub) {
-            fn_dbg = pth_epub3.dbg_fn_oebps_toc_nav_xhtml(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(epub_write.oebps_toc_nav_xhtml);
-          }
-        }
-        fn = pth_epub3.fn_oebps_toc_nav_xhtml;
-        EPUBzip(epub_write.oebps_toc_nav_xhtml, fn);
-      }
-      { /+ OEBPS/content.opf (doc manifest) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do_epub) {
-            fn_dbg = pth_epub3.dbg_fn_oebps_content_opf(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(epub_write.oebps_content_opf);
-          }
-        }
-        fn = pth_epub3.fn_oebps_content_opf;
-        EPUBzip(epub_write.oebps_content_opf, fn);
-      }
-      { /+ OEBPS/_dr/image (images) +/
-        foreach (image; doc_matters.srcs.image_list) {
-          { /+ debug +/
-            if (doc_matters.opt.action.debug_do_epub) {
-              if (doc_matters.opt.action.vox_gt2) {
-                writeln(
-                  doc_matters.src.image_dir_path, "/", image, " -> ",
-                  pth_epub3.dbg_doc_oebps_image(doc_matters.src.filename), "/", image
-                );
-              }
-              if (exists(doc_matters.src.image_dir_path ~ "/" ~ image)) {
-                (doc_matters.src.image_dir_path ~ "/" ~ image)
-                .copy((pth_epub3.dbg_doc_oebps_image(doc_matters.src.filename)) ~ "/" ~ image);
-              }
-            }
-          }
-          auto fn_src = doc_matters.src.image_dir_path ~ "/" ~ image;
-          auto fn_out =  pth_epub3.doc_oebps_image ~ "/" ~ image;
-          if (exists(fn_src)) {
-            {
-              auto zip_arc_member_file = new ArchiveMember();
-              zip_arc_member_file.name = fn_out;
-              auto zip_data = new OutBuffer();
-              zip_data.write(cast(char[]) ((fn_src).read));
-              zip_arc_member_file.expandedData = zip_data.toBytes();
-              zip.addMember(zip_arc_member_file);
-              createZipFile!()(fn_epub, zip.build());
-            }
-          }
-        }
-      }
-      { /+ OEBPS/epub.css +/
-        auto css = spineCss(doc_matters);
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do_epub) {
-            fn_dbg = pth_epub3.dbg_fn_oebps_css(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(css.epub);
-          }
-        }
-        fn = pth_epub3.fn_oebps_css;
-        auto zip_arc_member_file = new ArchiveMember();
-        zip_arc_member_file.name = fn;
-        auto zip_data = new OutBuffer();
-        zip_data.write(css.epub.dup);
-        zip_arc_member_file.expandedData = zip_data.toBytes();
-        zip.addMember(zip_arc_member_file);
-        createZipFile!()(fn_epub, zip.build());
-      }
-    } catch (ErrnoException ex) {
-      // Handle error
-    }
-    if (doc_matters.opt.action.vox_gt0) {
-      writeln(" ", fn_epub);
-    }
-    debug(epub_archive) {
-      if (exists(fn_epub)) {
-        try {
-          auto zipped = new ZipArchive((fn_epub).read);
-          foreach (filename, member; zipped.directory) {
-            auto data = zipped.expand(member);
-            writeln(filename, " length ", data.length);
-          }
-        } catch (ZipException ex) {
-          // Handle errors
-        }
-      }
-    }
-  }
-}
-- 
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