output templates

1 files changed, 343 insertions, 326 deletions

diff --git a/src/sdp/output_epub.d b/src/sdp/output_epub.d
index 4c23600..cffa560 100644
--- a/src/sdp/output_epub.d
+++ b/src/sdp/output_epub.d
@@ -1,367 +1,384 @@
 template outputEPub() {
-  struct outputEPub {
-    mixin InternalMarkup;
-    mixin outputXHTMLs;
-    string epub_mimetypes() {
-      string o;
-      o = format(q"¶application/epub+zip¶");
-      return o;
-    }
-    string epub_container_xml() {
-      string o;
-      o = format(q"¶<?xml version='1.0' encoding='utf-8'?>
-    <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>
-    </container>¶");
-      return o;
-    }
-    string epub_oebps_content(
-      // string[string][string]   dochead_meta,
-    ) {
-      // string[] toc;
-      // int counter = 0;
-      string uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
-      string content = format(q"¶<?xml version='1.0' encoding='utf-8'?>
-    <?xml version='1.0' encoding='utf-8'?>
-    <package xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="EPB-UUID">
-      <opf:metadata
-        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-        xmlns:opf="http://www.idpf.org/2007/opf"
-        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>%s</dc:title>
-        <dc:creator opf:file-as="%s" opf:role="aut">%s</dc:creator>
-        <dc:language>en</dc:language>
-        <dc:date opf:event="published">%s</dc:date>
-        <dc:rights>Copyright: %s</dc:rights>
-        <dc:identifier opf:scheme="URI">ox/current/en/epub/sisu_markup.epub</dc:identifier>
-        <dc:identifier id="bookid">urn:uuid:%s</dc:identifier>
-        <!-- <dc:identifier id="EPB-UUID">urn:uuid:%s</dc:identifier> -->
-      </opf:metadata>
-      <manifest>
-        <!-- NCX -->
-        <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />
-        <!-- CSS Style Sheets -->
-        <item id="main-css" href="css/xhtml.css" media-type="text/css" />¶",
-        uuid,
-        doc_matters.dochead_meta["title"]["full"],                                                               // title
-        (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
-        (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
-        (doc_matters.dochead_meta["date"]["published"].empty) ? "" : " by " ~ doc_matters.dochead_meta["date"]["published"],  // date
-        (doc_matters.dochead_meta["rights"]["copyright"].empty) ? "" : " by " ~ doc_matters.dochead_meta["rights"]["copyright"],  // rights
-        uuid,
-        uuid,
-      );
-      foreach (sect; doc_matters.keys_seq_seg) {
-        foreach (obj; contents[sect]) {
-        }
+  private import
+    std.algorithm,
+    std.array,
+    std.container,
+    std.exception,
+    std.file,
+    std.getopt,
+    std.json,
+    std.process,
+    std.stdio,
+    std.path,
+    std.range,
+    std.regex,
+    std.string,
+    std.traits,
+    std.typecons,
+    std.uni,
+    std.utf,
+    ao_defaults;
+  import
+    ao_rgx,
+    output_xhtmls;
+  mixin InternalMarkup;
+  mixin outputXHTMLs;
+  string epub_mimetypes() {
+    string o;
+    o = format(q"¶application/epub+zip¶");
+    return o;
+  }
+  string epub_container_xml() {
+    string o;
+    o = format(q"¶<?xml version='1.0' encoding='utf-8'?>
+  <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>
+  </container>¶");
+    return o;
+  }
+  string epub_oebps_content(C,M)(C contents, M doc_matters) {
+    string uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
+    string content = format(q"¶<?xml version='1.0' encoding='utf-8'?>
+  <?xml version='1.0' encoding='utf-8'?>
+  <package xmlns="http://www.idpf.org/2007/opf" version="2.0" unique-identifier="EPB-UUID">
+    <opf:metadata
+      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+      xmlns:opf="http://www.idpf.org/2007/opf"
+      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>%s</dc:title>
+      <dc:creator opf:file-as="%s" opf:role="aut">%s</dc:creator>
+      <dc:language>en</dc:language>
+      <dc:date opf:event="published">%s</dc:date>
+      <dc:rights>Copyright: %s</dc:rights>
+      <dc:identifier opf:scheme="URI">ox/current/en/epub/sisu_markup.epub</dc:identifier>
+      <dc:identifier id="bookid">urn:uuid:%s</dc:identifier>
+      <!-- <dc:identifier id="EPB-UUID">urn:uuid:%s</dc:identifier> -->
+    </opf:metadata>
+    <manifest>
+      <!-- NCX -->
+      <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml" />
+      <!-- CSS Style Sheets -->
+      <item id="main-css" href="css/xhtml.css" media-type="text/css" />¶",
+      uuid,
+      doc_matters.dochead_meta["title"]["full"],                                                               // title
+      (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
+      (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
+      (doc_matters.dochead_meta["date"]["published"].empty) ? "" : " by " ~ doc_matters.dochead_meta["date"]["published"],  // date
+      (doc_matters.dochead_meta["rights"]["copyright"].empty) ? "" : " by " ~ doc_matters.dochead_meta["rights"]["copyright"],  // rights
+      uuid,
+      uuid,
+    );
+    foreach (sect; doc_matters.keys_seq_seg) {
+      foreach (obj; contents[sect]) {
       }
-      return content;
     }
-    string epub_oebps_toc() {
-      int counter = 0;
-      string uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
-      auto markup = InlineMarkup();
-      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 href="css/xhtml.css" rel="stylesheet" type="text/css" id="main-css" />
-        <meta name="dtb:uid" content="urn:uuid:%s" />
-        <!-- <meta name="epub-creator" content="SiSU 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.dochead_meta["title"]["full"],                                                               // title
-        (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
-        uuid,                                                                                        // uuid
-        "3",                                                                                         // content depth
-        doc_matters.dochead_meta["title"]["full"],                                                               // title
-        (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : doc_matters.dochead_meta["creator"]["author"],          // author
-      );
-      foreach (sect; doc_matters.keys_seq_seg) {
-        foreach (obj; contents[sect]) {
-          if (obj.is_a == "heading") {
-            foreach_reverse (k; 0 .. 7) {
-              switch (obj.dom_markedup[k]) {
-              case DomTags.close :
-                writeln(markup.indent_by_spaces_provided(k), "</", k, ">");
-    toc ~= "</navPoint>";
-                break;
-              case DomTags.close_and_open :
-                writeln(markup.indent_by_spaces_provided(k), "</", k, ">");
-                writeln(markup.indent_by_spaces_provided(k), "<", k, ">", obj.text);
-                ++counter;
-    toc ~= "</navPoint>";
-    toc ~= format(q"¶<navPoint class="chapter" id="navpoint" playOrder="%s">
-    <navLabel>
+    return content;
+  }
+  string epub_oebps_toc(C,M)(C contents, M doc_matters) {
+    int counter = 0;
+    string uuid = "18275d951861c77f78acd05672c9906924c59f18a2e0ba06dad95959693e9bd8"; // TODO shared elsewhere
+    auto markup = InlineMarkup();
+    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 href="css/xhtml.css" rel="stylesheet" type="text/css" id="main-css" />
+      <meta name="dtb:uid" content="urn:uuid:%s" />
+      <!-- <meta name="epub-creator" content="SiSU 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>
-    </navLabel>
-    <content src="%s" />¶",
-    counter,
-    obj.text,
-    obj.segment_anchor_tag,   // lev < 4 [no link]; lev == 4 [filename] markup.xhtml; lev > 4 [filename#ocn] (links done in segment_anchor_tag)
-    );
-                break;
-              case DomTags.open :
-                writeln(markup.indent_by_spaces_provided(k), "<", k, ">", obj.text);
-                ++counter;
-    toc ~= format(q"¶<navPoint class="chapter" id="navpoint" playOrder="%s">
-    <navLabel>
+    </docTitle>
+    <docAuthor>
       <text>%s</text>
-    </navLabel>
-    <content src="%s" />¶",
-    counter,
-    obj.text,
-    obj.segment_anchor_tag,   // lev < 4 [no link]; lev == 4 [filename] markup.xhtml; lev > 4 [filename#ocn] (fix links in segment_anchor_tag)
+    </docAuthor>
+    <navMap>¶",
+      doc_matters.dochead_meta["title"]["full"],                                                               // title
+      (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : " by " ~ doc_matters.dochead_meta["creator"]["author"], // author
+      uuid,                                                                                        // uuid
+      "3",                                                                                         // content depth
+      doc_matters.dochead_meta["title"]["full"],                                                               // title
+      (doc_matters.dochead_meta["creator"]["author"].empty) ? "" : doc_matters.dochead_meta["creator"]["author"],          // author
     );
-                break;
-              default :
-                break;
-              }
+    foreach (sect; doc_matters.keys_seq_seg) {
+      foreach (obj; contents[sect]) {
+        if (obj.is_a == "heading") {
+          foreach_reverse (k; 0 .. 7) {
+            switch (obj.dom_markedup[k]) {
+            case DomTags.close :
+              writeln(markup.indent_by_spaces_provided(k), "</", k, ">");
+  toc ~= "</navPoint>";
+              break;
+            case DomTags.close_and_open :
+              writeln(markup.indent_by_spaces_provided(k), "</", k, ">");
+              writeln(markup.indent_by_spaces_provided(k), "<", k, ">", obj.text);
+              ++counter;
+  toc ~= "</navPoint>";
+  toc ~= format(q"¶<navPoint class="chapter" id="navpoint" playOrder="%s">
+  <navLabel>
+    <text>%s</text>
+  </navLabel>
+  <content src="%s" />¶",
+  counter,
+  obj.text,
+  obj.segment_anchor_tag,   // lev < 4 [no link]; lev == 4 [filename] markup.xhtml; lev > 4 [filename#ocn] (links done in segment_anchor_tag)
+  );
+              break;
+            case DomTags.open :
+              writeln(markup.indent_by_spaces_provided(k), "<", k, ">", obj.text);
+              ++counter;
+  toc ~= format(q"¶<navPoint class="chapter" id="navpoint" playOrder="%s">
+  <navLabel>
+    <text>%s</text>
+  </navLabel>
+  <content src="%s" />¶",
+  counter,
+  obj.text,
+  obj.segment_anchor_tag,   // lev < 4 [no link]; lev == 4 [filename] markup.xhtml; lev > 4 [filename#ocn] (fix links in segment_anchor_tag)
+  );
+              break;
+            default :
+              break;
             }
           }
         }
       }
-      toc ~= format(q"¶  </navMap>
-    </ncx>¶");
-      return toc;
     }
-    
-    void doc_content(C,T)(
-      auto ref const C         contents,
-      auto ref T               doc_matters,
-    ) {
-      auto xhtml_format = outputXHTMLs();
-      auto rgx = Rgx();
-      // string[] toc;
-      string[][string] doc_epub;
-      string[] doc;
-      string segment_filename;
-      string[] top_level_headings = ["","","",""];
-      auto mimetypes = epub_mimetypes;
-      auto meta_inf_container_xml = epub_container_xml;
-      auto oebps_toc_ncx = epub_oebps_toc;
-      auto oebps_content_opf = epub_oebps_content;
-      foreach (part; doc_matters.keys_seq_seg) {
-        foreach (obj; contents[part]) {
-          if (obj.is_a == "heading") {
+    toc ~= format(q"¶  </navMap>
+  </ncx>¶");
+    return toc;
+  }
+  
+  void outputEPub(C,T)(
+    auto ref const C         contents,
+    auto ref T               doc_matters,
+  ) {
+    mixin SiSUrgxInit;
+    auto xhtml_format = outputXHTMLs();
+    auto rgx = Rgx();
+    // string[] toc;
+    string[][string] doc_epub;
+    string[] doc;
+    string segment_filename;
+    string[] top_level_headings = ["","","",""];
+    auto mimetypes = epub_mimetypes;
+    auto meta_inf_container_xml = epub_container_xml;
+    auto oebps_toc_ncx = epub_oebps_toc(contents, doc_matters);
+    auto oebps_content_opf = epub_oebps_content(contents, doc_matters);
+    foreach (part; doc_matters.keys_seq_seg) {
+      foreach (obj; contents[part]) {
+        if (obj.is_a == "heading") {
+          switch (obj.heading_lev_markup) {
+          // case 0:
+          //   break;
+          case 0: .. case 3:
+            /+ fill buffer, and replace with new levels from 1 to 3 +/
             switch (obj.heading_lev_markup) {
-            // case 0:
-            //   break;
-            case 0: .. case 3:
-              /+ fill buffer, and replace with new levels from 1 to 3 +/
-              switch (obj.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:
-                top_level_headings[obj.heading_lev_markup] = xhtml_format.heading(obj);
-                break;
-              }
-              break;
-            case 4:
-              segment_filename = obj.segment_anchor_tag;
-              doc_epub[segment_filename] ~= xhtml_format.seg_head(doc_matters.dochead_meta);
-              foreach (top_level_heading; top_level_headings) {
-                // writeln(top_level_heading);
-                doc_epub[segment_filename] ~= top_level_heading;
-              }
-              doc_epub[segment_filename] ~= xhtml_format.heading(obj);
-              break;
-            case 5: .. case 7:
-              doc_epub[segment_filename] ~= xhtml_format.heading(obj);
+            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:
+              top_level_headings[obj.heading_lev_markup] = xhtml_format.heading(obj);
               break;
+            }
+            break;
+          case 4:
+            segment_filename = obj.segment_anchor_tag;
+            doc_epub[segment_filename] ~= xhtml_format.seg_head(doc_matters.dochead_meta);
+            foreach (top_level_heading; top_level_headings) {
+              // writeln(top_level_heading);
+              doc_epub[segment_filename] ~= top_level_heading;
+            }
+            doc_epub[segment_filename] ~= xhtml_format.heading(obj);
+            break;
+          case 5: .. case 7:
+            doc_epub[segment_filename] ~= xhtml_format.heading(obj);
+            break;
+          default:
+            writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
+            break;
+          }
+        } else if (obj.use == "frontmatter") {
+          switch (obj.is_of) {
+          case "para":
+            switch (obj.is_a) {
+            case "toc":
+                doc_epub[segment_filename] ~= xhtml_format.toc(obj);
+            //   doc_epub ~= xhtml_toc(obj);
+            break;
             default:
-              writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
+              // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
               break;
             }
-          } else if (obj.use == "frontmatter") {
-            switch (obj.is_of) {
+            break;
+          default:
+            // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
+            break;
+          }
+        } else if (obj.use == "body") {
+          switch (obj.is_of) {
+          case "para":
+            switch (obj.is_a) {
             case "para":
-              switch (obj.is_a) {
-              case "toc":
-                  doc_epub[segment_filename] ~= xhtml_format.toc(obj);
-              //   doc_epub ~= xhtml_toc(obj);
-              break;
-              default:
-                // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
-                break;
-              }
+              doc_epub[segment_filename] ~= xhtml_format.para(obj);
               break;
             default:
               // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
               break;
             }
-          } else if (obj.use == "body") {
-            switch (obj.is_of) {
-            case "para":
-              switch (obj.is_a) {
-              case "para":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj);
-                break;
-              default:
-                // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
-                break;
-              }
+            break;
+          case "block":
+            switch (obj.is_a) {
+            case "poem":                        // double check why both poem & verse
+              break;
+            case "verse":
+              doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
+              // doc_epub ~= xhtml_verse(obj);
+              break;
+            case "group":
+              doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
+              // doc_epub ~= xhtml_group(obj);
               break;
             case "block":
-              switch (obj.is_a) {
-              case "poem":                        // double check why both poem & verse
-                break;
-              case "verse":
-                doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
-                // doc_epub ~= xhtml_verse(obj);
-                break;
-              case "group":
-                doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
-                // doc_epub ~= xhtml_group(obj);
-                break;
-              case "block":
-                doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
-                // doc_epub ~= xhtml_block(obj);
-                break;
-              case "quote":
-                doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
-                // doc_epub ~= xhtml_quote(obj);
-                break;
-              case "table":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj); //
-                // doc_epub ~= xhtml_table(obj);
-                break;
-              case "code":
-                doc_epub[segment_filename] ~= xhtml_format.code(obj);
-                break;
-              default:
-                writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
-                break;
-              }
+              doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
+              // doc_epub ~= xhtml_block(obj);
+              break;
+            case "quote":
+              doc_epub[segment_filename] ~= xhtml_format.nugget(obj);
+              // doc_epub ~= xhtml_quote(obj);
+              break;
+            case "table":
+              doc_epub[segment_filename] ~= xhtml_format.para(obj); //
+              // doc_epub ~= xhtml_table(obj);
+              break;
+            case "code":
+              doc_epub[segment_filename] ~= xhtml_format.code(obj);
               break;
             default:
-              // writeln(__FILE__, ":", __LINE__, ": ", obj.is_of);
+              writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
               break;
             }
-          } else if (obj.use == "backmatter") {
-            switch (obj.is_of) {
-            case "para":
-              switch (obj.is_a) {
-              case "endnote":
-                doc_epub[segment_filename] ~= xhtml_format.endnote(obj);
-                break;
-              case "glossary":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj);
-                break;
-              case "bibliography":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj);
-                break;
-              case "bookindex":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj);
-                break;
-              case "blurb":
-                doc_epub[segment_filename] ~= xhtml_format.para(obj);
-                break;
-              default:
-                // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
-                break;
-              }
+            break;
+          default:
+            // writeln(__FILE__, ":", __LINE__, ": ", obj.is_of);
+            break;
+          }
+        } else if (obj.use == "backmatter") {
+          switch (obj.is_of) {
+          case "para":
+            switch (obj.is_a) {
+            case "endnote":
+              doc_epub[segment_filename] ~= xhtml_format.endnote(obj);
+              break;
+            case "glossary":
+              doc_epub[segment_filename] ~= xhtml_format.para(obj);
+              break;
+            case "bibliography":
+              doc_epub[segment_filename] ~= xhtml_format.para(obj);
+              break;
+            case "bookindex":
+              doc_epub[segment_filename] ~= xhtml_format.para(obj);
+              break;
+            case "blurb":
+              doc_epub[segment_filename] ~= xhtml_format.para(obj);
               break;
             default:
-              writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
+              // writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
               break;
             }
+            break;
+          default:
+            writeln(__FILE__, ":", __LINE__, ": ", obj.is_a);
+            break;
           }
         }
       }
-      writeln(doc_matters.keys_seq_seg);
-      epub_write_output_files(
-        doc_matters,
-        doc_epub,
-        mimetypes,
-        meta_inf_container_xml,
-        oebps_toc_ncx,
-        oebps_content_opf,
-      );
     }
-    void epub_write_output_files(C,EpD,Mt,Mic,Ot,Oc)(
-      C   doc_matters,
-      EpD doc_epub,
-      Mt  mimetypes,
-      Mic meta_inf_container_xml,
-      Ot  oebps_toc_ncx,
-      Oc  oebps_content_opf,
-    ) {
-      debug(asserts){
-        static assert(is(typeof(doc_epub)               == string[][string]));
-        static assert(is(typeof(mimetypes)              == string));
-        static assert(is(typeof(meta_inf_container_xml) == string));
-        static assert(is(typeof(oebps_toc_ncx)          == string));
-        static assert(is(typeof(oebps_content_opf)      == string));
-      }
-      mixin SiSUpaths;
-      auto pth_epub = EpubPaths();
-      // doc = xhtml_format.scroll_head ~ doc_epub ~  xhtml_format.tail;
-      auto xhtml_format = outputXHTMLs();
-      try {
-        mkdirRecurse(pth_epub.doc_meta_inf(doc_matters.source_filename));
-        mkdirRecurse(pth_epub.doc_oebps_css(doc_matters.source_filename));
-        mkdirRecurse(pth_epub.doc_oebps_image(doc_matters.source_filename));
-        /+ OEBPS/[segments].xhtml +/
-        foreach (seg_filename; doc_matters.segnames) {
-          auto f = File(pth_epub.fn_oebps_content_xhtml(doc_matters.source_filename, seg_filename), "w");
-          /+ // f.writeln(seg_head); // not needed built and inserted earlier +/
-          foreach (docseg; doc_epub[seg_filename]) {
-            f.writeln(docseg);
-          }
-          f.writeln(xhtml_format.tail); // needed for each lev4
+    writeln(doc_matters.keys_seq_seg);
+    epub_write_output_files(
+      doc_matters,
+      doc_epub,
+      mimetypes,
+      meta_inf_container_xml,
+      oebps_toc_ncx,
+      oebps_content_opf,
+    );
+  }
+  void epub_write_output_files(C,EpD,Mt,Mic,Ot,Oc)(
+    C   doc_matters,
+    EpD doc_epub,
+    Mt  mimetypes,
+    Mic meta_inf_container_xml,
+    Ot  oebps_toc_ncx,
+    Oc  oebps_content_opf,
+  ) {
+    debug(asserts){
+      static assert(is(typeof(doc_epub)               == string[][string]));
+      static assert(is(typeof(mimetypes)              == string));
+      static assert(is(typeof(meta_inf_container_xml) == string));
+      static assert(is(typeof(oebps_toc_ncx)          == string));
+      static assert(is(typeof(oebps_content_opf)      == string));
+    }
+    mixin SiSUpaths;
+    auto pth_epub = EpubPaths();
+    // doc = xhtml_format.scroll_head ~ doc_epub ~  xhtml_format.tail;
+    auto xhtml_format = outputXHTMLs();
+    try {
+      mkdirRecurse(pth_epub.doc_meta_inf(doc_matters.source_filename));
+      mkdirRecurse(pth_epub.doc_oebps_css(doc_matters.source_filename));
+      mkdirRecurse(pth_epub.doc_oebps_image(doc_matters.source_filename));
+      /+ OEBPS/[segments].xhtml +/
+      foreach (seg_filename; doc_matters.segnames) {
+        auto f = File(pth_epub.fn_oebps_content_xhtml(doc_matters.source_filename, seg_filename), "w");
+        /+ // f.writeln(seg_head); // not needed built and inserted earlier +/
+        foreach (docseg; doc_epub[seg_filename]) {
+          f.writeln(docseg);
         }
-        /+ mimetypes +/
-        auto f = File(pth_epub.fn_mimetypes(doc_matters.source_filename), "w");
-        f.writeln(mimetypes);
-        /+  META-INF/container.xml +/
-        f = File(pth_epub.fn_dmi_container_xml(doc_matters.source_filename), "w");
-        f.writeln(meta_inf_container_xml);
-        /+ OEBPS/toc.ncx +/
-        f = File(pth_epub.fn_oebps_toc_ncx(doc_matters.source_filename), "w");
-        f.writeln(oebps_toc_ncx);
-        /+ OEBPS/content.opf +/
-        f = File(pth_epub.fn_oebps_content_opf(doc_matters.source_filename), "w");
-        f.writeln(oebps_content_opf);
-      }
-      catch (ErrnoException ex) {
-        // Handle error
+        f.writeln(xhtml_format.tail); // needed for each lev4
       }
+      /+ mimetypes +/
+      auto f = File(pth_epub.fn_mimetypes(doc_matters.source_filename), "w");
+      f.writeln(mimetypes);
+      /+  META-INF/container.xml +/
+      f = File(pth_epub.fn_dmi_container_xml(doc_matters.source_filename), "w");
+      f.writeln(meta_inf_container_xml);
+      /+ OEBPS/toc.ncx +/
+      f = File(pth_epub.fn_oebps_toc_ncx(doc_matters.source_filename), "w");
+      f.writeln(oebps_toc_ncx);
+      /+ OEBPS/content.opf +/
+      f = File(pth_epub.fn_oebps_content_opf(doc_matters.source_filename), "w");
+      f.writeln(oebps_content_opf);
+    }
+    catch (ErrnoException ex) {
+      // Handle error
     }
-    
   }
+  
 }