From 2731b33fe2d05fe3ebc3e2f98d39eacf7295d1e4 Mon Sep 17 00:00:00 2001
From: Ralph Amissah <ralph.amissah@gmail.com>
Date: Sat, 16 Nov 2019 12:16:08 -0500
Subject: module & src renaming

---
 src/doc_reform/output/epub3.d | 814 ------------------------------------------
 1 file changed, 814 deletions(-)
 delete mode 100644 src/doc_reform/output/epub3.d

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

diff --git a/src/doc_reform/output/epub3.d b/src/doc_reform/output/epub3.d
deleted file mode 100644
index f46ff6e..0000000
--- a/src/doc_reform/output/epub3.d
+++ /dev/null
@@ -1,814 +0,0 @@
-module doc_reform.output.epub3;
-template outputEPub3() {
-  import doc_reform.output;
-  import
-    std.digest.sha,
-    std.file,
-    std.outbuffer,
-    std.uri,
-    std.zip,
-    std.conv : to;
-  import
-    doc_reform.output.create_zip_file,
-    doc_reform.output.xmls,
-    doc_reform.output.xmls_css;
-  mixin InternalMarkup;
-  mixin outputXHTMLs;
-  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 xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="EPB-UUID">
-    <metadata
-      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-      xmlns:dcterms="http://purl.org/dc/terms/"
-      xmlns:dc="http://purl.org/dc/elements/1.1/"
-      unique-identifier="urn:uuid:%s" version="2.0">
-      <!-- <dc:title id="title">%s</dc:title> -->
-      <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>
-      <!-- <dc:identifier id="EPB-UUID">urn:uuid:%s</dc:identifier> -->
-    </metadata>
-    <manifest>
-      <!-- NCX epub2 navigation -->
-        <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />
-      <!-- CSS Style Sheets -->
-        <link rel="stylesheet" href="%s" type="text/css" id="main-css" />
-      <!-- nav epub3 navigation -->
-        <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_full),
-      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_text(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,
-      _uuid,
-      (pth_epub3.fn_oebps_css).chompPrefix("OEBPS/"),
-    );
-    content ~= "    " ~ "<!-- Content Documents -->" ~ "\n  ";
-    content ~= parts["manifest_documents"];
-    // TODO sort jpg & png
-    content ~= "    " ~ "<!-- Images -->" ~ "\n  ";
-    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 toc=\"ncx\">" ~ "\n  ";
-    content ~= parts["spine"];
-    content ~= "  " ~ "</spine>"            ~ "\n  ";
-    content ~= "  " ~ "<guide>"             ~ "\n  ";
-    content ~= parts["guide"];
-    content ~= "  " ~ "</guide>"            ~ "\n  ";
-    content ~= ""   ~ "</package>";
-    debug(epubmanifest) {
-      foreach (part; doc_matters.has.keys_seq.seg) { // TODO
-        foreach (obj; doc_abstraction[part]) {
-          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();
-    auto rgx = Rgx();
-    string toc =format("<html xmlns=\"http://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\">\n",
-      doc_matters.conf_make_meta.meta.title_full,
-    );
-    foreach (sect; doc_matters.has.keys_seq.seg) {
-      foreach (obj; doc_abstraction[sect]) {
-        if (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.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";
-              if  (obj.metainfo.heading_lev_markup < 4) {
-                toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
-                ~ markup.indent_by_spaces_provided((n + 2), "  ")
-                ~ "<a href=\"" ~ obj.tags.segment_anchor_tag_epub ~ ".xhtml" ~ "\">"
-                ~ _txt
-                ~ "</a>" ~ "\n";
-              } else {
-                string hashtag =(obj.metainfo.heading_lev_markup == 4)
-                ? ""
-                : ("#" ~ obj.metainfo.ocn.to!string);
-                toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
-                ~ markup.indent_by_spaces_provided((n + 2), "  ")
-                ~ "<a href=\"" ~ obj.tags.segment_anchor_tag_epub ~ ".xhtml" ~ hashtag ~ "\">"
-                ~ _txt
-                ~ "</a>" ~ "\n";
-              }
-              break;
-            case DomTags.open :
-              toc ~= markup.indent_by_spaces_provided(n, "  ") ~ "<ol>" ~ "\n";
-              if  (obj.metainfo.heading_lev_markup < 4) {
-                toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
-                ~ markup.indent_by_spaces_provided((n + 2), "  ")
-                ~ "<a href=\"" ~ obj.tags.segment_anchor_tag_epub ~ ".xhtml" ~ "\">"
-                ~ _txt
-                ~ "</a>" ~ "\n";
-              } else {
-                string hashtag =(obj.metainfo.heading_lev_markup == 4)
-                ? ""
-                : ("#" ~ obj.metainfo.ocn.to!string);
-                toc ~= markup.indent_by_spaces_provided((n + 1), "  ") ~ "<li>" ~ "\n"
-                ~ markup.indent_by_spaces_provided((n + 2), "  ")
-                ~ "<a href=\"" ~ obj.tags.segment_anchor_tag_epub ~ ".xhtml" ~ hashtag ~ "\">"
-                ~ _txt
-                ~ "</a>" ~ "\n";
-              }
-              break;
-            default :
-              break;
-            }
-          }
-        }
-      }
-    }
-    toc ~="</nav>
-      </section>
-    </body>
-  </html>\n";
-    return toc;
-  }
-  string epub2_oebps_toc_ncx(D,I)(D doc_abstraction, I doc_matters) {
-    int counter = 0;
-    string _uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
-    auto markup = InlineMarkup();
-    auto rgx = Rgx();
-    enum DomTags { none, open, close, close_and_open, open_still, }
-    string toc = format(q"┃<?xml version='1.0' encoding='utf-8'?>
-  <ncx xmlns="http://www.daisy.org/z3986/2005/ncx/" version="2005-1">
-  <head>
-    <!-- four required metadata items (for all NCX documents,
-      (including the relaxed constraints of OPS 2.0) -->
-    <title>%s%s</title>
-    <link rel="stylesheet" href="css/epub.css" type="text/css" id="main-css" />
-    <meta name="dtb:uid" content="urn:uuid:%s" />
-    <!-- <meta name="epub-creator" content="spine http://www.jus.uio.no/sisu (this copy)" /> -->
-    <meta name="dtb:depth" content="%s" />
-    <meta name="dtb:totalPageCount" content="0" />
-    <meta name="dtb:maxPageNumber" content="0" />
-  </head>
-  <docTitle>
-    <text>%s</text>
-  </docTitle>
-  <docAuthor>
-    <text>%s</text>
-  </docAuthor>
-  <navMap>┃",
-      doc_matters.conf_make_meta.meta.title_full,                          // title
-      (doc_matters.conf_make_meta.meta.creator_author.empty) ? ""
-        : " by " ~ doc_matters.conf_make_meta.meta.creator_author,         // author
-      _uuid,                                                                // uuid
-      "3",                                                                 // content depth
-      doc_matters.conf_make_meta.meta.title_full,                          // title
-      (doc_matters.conf_make_meta.meta.creator_author.empty) ? ""
-        : doc_matters.conf_make_meta.meta.creator_author,                  // author
-    );
-    foreach (sect; doc_matters.has.keys_seq.seg) {
-      foreach (obj; doc_abstraction[sect]) {
-        if (obj.metainfo.is_a == "heading") {
-          string _txt = obj.text.replaceAll(rgx.inline_notes_al_gen, "").strip;
-          string hashtag =(obj.metainfo.heading_lev_markup <= 4) ? "" : ("#" ~ obj.metainfo.ocn.to!string);
-          foreach_reverse (k; 0 .. 7) {
-            switch (obj.metainfo.dom_structure_markedup_tags_status[k]) {
-            case DomTags.close :
-              toc ~= "\n    </navPoint>";
-              break;
-            case DomTags.close_and_open :
-              ++counter;
-              toc ~= "\n    </navPoint>";
-              toc ~= format(q"┃
-    <navPoint class="chapter" id="navpoint" playOrder="%s">
-      <navLabel>
-        <text>%s</text>
-      </navLabel>
-      <content src="%s.xhtml%s" />┃",
-                counter,
-                _txt,
-                obj.tags.segment_anchor_tag_epub,
-                hashtag,
-              );
-              break;
-            case DomTags.open :
-              ++counter;
-              toc ~= format(q"┃
-    <navPoint class="chapter" id="navpoint" playOrder="%s">
-      <navLabel>
-        <text>%s</text>
-      </navLabel>
-      <content src="%s.xhtml%s" />┃",
-                counter,
-                _txt,
-                obj.tags.segment_anchor_tag_epub,
-                hashtag,
-              );
-              break;
-            default :
-              break;
-            }
-          }
-        }
-      }
-    }
-    toc ~= format(q"┃
-      </navPoint>
-      </navPoint>
-      </navPoint>
-    </navMap>
-  </ncx>┃");
-    return toc;
-  }
-  
-  void outputEPub3(D,I)(
-    const D    doc_abstraction,
-          I    doc_matters,
-  ) {
-    mixin spineOutputRgxInit;
-    auto xhtml_format = outputXHTMLs();
-    auto rgx = Rgx();
-    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_ncx;
-      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 (part; doc_matters.has.keys_seq.seg) {
-      foreach (obj; doc_abstraction[part]) {
-        string _txt = xhtml_format.special_characters(obj);
-        if (obj.metainfo.is_a == "heading") {
-          assert(part == "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);
-              auto 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);
-            auto 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:
-            auto 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
-              && doc_matters.opt.action.verbose) {
-                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
-              && doc_matters.opt.action.verbose) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a, ": ", obj.metainfo.heading_lev_markup);
-              }
-            }
-            break;
-          }
-        } else {
-          assert(part == "head" || "toc" || "body" || "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb" || "tail");
-          switch (obj.metainfo.is_of_part) {
-          case "frontmatter":             assert(part == "head" || "toc");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "toc":
-                auto 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
-                  && doc_matters.opt.action.verbose) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do
-                && doc_matters.opt.action.verbose) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "body":                    assert(part == "body");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "para":
-                auto 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
-                  && doc_matters.opt.action.verbose) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            case "block":
-              switch (obj.metainfo.is_a) {
-              case "quote":
-                auto 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":
-                auto 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":
-                auto 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":
-                auto 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
-                  && doc_matters.opt.action.verbose) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do
-                && doc_matters.opt.action.verbose) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "backmatter":
-            assert(part == "endnotes" || "glossary" || "bibliography" || "bookindex" || "blurb" || "tail");
-            switch (obj.metainfo.is_of_type) {
-            case "para":
-              switch (obj.metainfo.is_a) {
-              case "endnote":             assert(part == "endnotes");
-                auto t = xhtml_format.para_seg(_txt, obj, doc_matters, suffix, "epub");
-                epubWrite.doc_epub3[segment_filename] ~= t[0];
-                break;
-              case "glossary":            assert(part == "glossary");
-                auto 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(part == "bibliography");
-                auto 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(part == "bookindex");
-                auto 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(part == "blurb");
-                auto 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
-                  && doc_matters.opt.action.verbose) {
-                    writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_a);
-                  }
-                }
-                break;
-              }
-              break;
-            default:
-              { /+ debug +/
-                if (doc_matters.opt.action.debug_do
-                && doc_matters.opt.action.verbose) {
-                  writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_type);
-                }
-              }
-              break;
-            }
-            break;
-          case "comment":
-            break;
-          default:
-            { /+ debug +/
-              if (doc_matters.opt.action.debug_do
-              && doc_matters.opt.action.verbose) {
-                writeln(__FILE__, ":", __LINE__, ": ", obj.metainfo.is_of_part);
-              }
-            }
-            break;
-          }
-        }
-        if (obj.metainfo.is_a == "heading") {
-          assert(obj.text.length > 0);
-          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_ncx =          doc_abstraction.epub2_oebps_toc_ncx(doc_matters);
-    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);
-  }
-  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_toc_ncx)          == string));
-      static assert(is(typeof(epub_write.oebps_content_opf)      == string));
-    }
-    static auto rgx = Rgx();
-    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)
-      ? 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;
-      }
-      { /+ debug +/
-        if (doc_matters.opt.action.debug_do) {
-          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) {
-              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);
-            }
-          }
-          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.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) {
-            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) {
-            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) {
-            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/toc.ncx (navigation toc epub2) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do) {
-            fn_dbg = pth_epub3.dbg_fn_oebps_toc_ncx(doc_matters.src.filename);
-            File(fn_dbg, "w").writeln(epub_write.oebps_toc_ncx);
-          }
-        }
-        fn = pth_epub3.fn_oebps_toc_ncx;
-        EPUBzip(epub_write.oebps_toc_ncx, fn);
-      }
-      { /+ OEBPS/content.opf (doc manifest) +/
-        { /+ debug +/
-          if (doc_matters.opt.action.debug_do) {
-            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) {
-              if (doc_matters.opt.action.very_verbose) {
-                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) {
-            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.quiet)) {
-      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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