From bca25140b8c9170b665ecf618d181773426a9e4a Mon Sep 17 00:00:00 2001
From: sejo <sejo@texto-plano.xyz>
Date: Sat, 8 Jan 2022 19:22:07 -0600
Subject: [PATCH] include cover image in metadata

---
 g2e.awk                               | 11 +++++++++--
 templates/content-header.opf          |  5 -----
 templates/content-manifest-header.opf |  3 +++
 3 files changed, 12 insertions(+), 7 deletions(-)
 create mode 100644 templates/content-manifest-header.opf

diff --git a/g2e.awk b/g2e.awk
index 5b6d0f4..61f7a69 100644
--- a/g2e.awk
+++ b/g2e.awk
@@ -53,7 +53,8 @@ BEGIN{
 	}
 
 	# start writing metadata files
-	content = write_template( "content-header.opf", meta )
+	content_header = write_template( "content-header.opf", meta )
+	content = write_template("content-manifest-header.opf", meta )
 	toc = write_template( "toc-header.ncx", meta )
 	spinetoc = "  <spine toc=\"ncx\">\n"
 }
@@ -108,13 +109,19 @@ ARGIND==2 && FNR==1{
 		id = dest
 		sub(/^.+\//,"",id) # get basename
 
-		properties = id~/cover/ ? "properties=\"cover-image\"" : ""
+		properties = ""
+		if(id~/cover/){
+			properties = "properties=\"cover-image\""
+			content_header = content_header "    <meta content=\"" id "\" name=\"cover\">\n"
+		}
 		content = content "    <item id=\"" id "\" href=\"" dest "\" media-type=\"" mediatype "\" " properties "/>\n"
 	}
 	$0 = line
 
 	# finalize metadata files
+	content_header = content_header "  </metadata>\n\n"
 	content = content "  </manifest>\n\n" spinetoc "  </spine>\n\n</package>"
+	content = content_header content
 	print content > epubodir "content.opf"
 
 	toc = toc "  </navMap>\n</ncx>"
diff --git a/templates/content-header.opf b/templates/content-header.opf
index 93b2339..90c91ba 100644
--- a/templates/content-header.opf
+++ b/templates/content-header.opf
@@ -8,8 +8,3 @@
     <dc:creator opf:role="aut">{author}</dc:creator>
     <dc:description>{description}</dc:description>
     <dc:date>{publishDate}</dc:date>
-  </metadata>
-
-  <manifest>
-    <item id="stylesheet" href="style.css" media-type="text/css"/>
-    <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
diff --git a/templates/content-manifest-header.opf b/templates/content-manifest-header.opf
new file mode 100644
index 0000000..4d16c53
--- /dev/null
+++ b/templates/content-manifest-header.opf
@@ -0,0 +1,3 @@
+  <manifest>
+    <item id="stylesheet" href="style.css" media-type="text/css"/>
+    <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>