streamlined templates

Makefile

@@ -1,6 +1,9 @@
 clean:
 	rm example-book.gpub
-gpub:
+	rm -r out/
+example-gpub:
 	cd example-gpub; zip -r ../example-book.gpub *; cd -
+epub:
+	cd out; zip -r ../out.epub *; cd -
 example:
 	awk -f g2e.awk example-gpub/

README.md

@@ -0,0 +1,32 @@
+# g2e
+
+an opinionated gempub to epub converter written in awk.
+
+# usage
+
+an example (uncompressed) gpub file is provided.
+
+you can generate the corresponding epub file using:
+
+```
+make example
+```
+
+and then compress it with:
+
+```
+make epub
+```
+
+in order to convert another gpub, you can remix the following command, where `example-gpub/` would be the directory for your uncompressed gpub
+
+```
+awk -f g2e.awk example-gpub/
+```
+
+for the moment this only generates the epub metadata and table of contents files.
+
+# TODO
+
+* convert .gmi files to .xhtml
+* handle non-gmi files in the manifest

g2e.awk

@@ -1,6 +1,7 @@
 # awk -f g2e.awk example-gpub/
 BEGIN{
 	gpubdir = ARGV[1]
+	tdir = "templates/" # templates dir
 	epubtdir = "template-epub/"
 	epubodir = "out/"
 	metadatafile = gpubdir "metadata.txt"
@@ -30,15 +31,21 @@ BEGIN{
 
 	# setup epub
 	system( "mkdir -p " epubodir "OEBPS" )
-	system( "cp -ru " epubtdir "META-INF " epubodir )
-	system( "cp -u " epubtdir "mimetype " epubodir )
+	system( "mkdir -p " epubodir "META-INF" )
+	system( "cp -u " tdir "container.xml " epubodir "META-INF/" )
+	system( "cp -u " tdir "mimetype " epubodir )
 
-	RS = "\f" # to get the whole file in one getline
-	getline templates["content-header.opf"] < (epubtdir "OEBPS/content-header.opf")
-	getline templates["toc-header.ncx"] < (epubtdir "OEBPS/toc-header.ncx")
-	getline templates["toc-navmap.ncx"] < (epubtdir "OEBPS/toc-navmap.ncx")
+	# read templates
+	templatefiles ="find " tdir " -type f -not -name '.*'"
+	while( (templatefiles | getline )>0 ){
+		tpath = $0
+		tkey = tpath
+		sub(tdir, "", tkey)
 
-	RS = "\n" # return to normal
+		RS = "\f" # to get the whole file in one getline
+		getline templates[tkey] < tpath
+		RS = "\n"
+	}
 
 	content = write_template( "content-header.opf", meta )
 	toc = write_template( "toc-header.ncx", meta )
@@ -75,8 +82,8 @@ ARGIND==1 && /^=>/{
 	spinetoc = spinetoc "    <itemref idref=\"" id "\" />\n"
 
 	toc = toc write_template( "toc-navmap.ncx", ch )
-
 }
+
 # when finished reading the index:
 ARGIND==2 && FNR==1{
 	content = content "  </manifest>\n\n" spinetoc "  </spine>\n\n</package>"
@@ -90,6 +97,7 @@ ARGIND==2 && FNR==1{
 ARGIND>1{
 #	print $0
 }
+
 END{
 
 }

template-epub/OEBPS/content.opf

@@ -1,27 +0,0 @@
-<?xml version="1.0"?>
-<package version="2.0" xmlns="http://www.idpf.org/2007/opf" unique-identifier="BookId">
-
-  <metadata xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:opf="http://www.idpf.org/2007/opf">
-    <dc:title>{title}</dc:title>
-    <dc:language>{language}</dc:language>
-    <dc:identifier id="BookId" opf:scheme="ISBN">123456789X</dc:identifier>
-    <dc:creator opf:role="aut">{author}</dc:creator>
-		<dc:description>{description}</dc:description>
-		<dc:date>{publishDate}</dc:date>
-  </metadata>
-
-  <manifest>
-    <item id="chapter1" href="chapter1.xhtml" media-type="application/xhtml+xml"/>
-    <item id="appendix" href="appendix.xhtml" media-type="application/xhtml+xml"/>
-    <item id="stylesheet" href="style.css" media-type="text/css"/>
-    <item id="ch1-pic" href="ch1-pic.png" media-type="image/png"/>
-    <item id="myfont" href="css/myfont.otf" media-type="application/x-font-opentype"/>
-    <item id="ncx" href="toc.ncx" media-type="application/x-dtbncx+xml"/>
-  </manifest>
-
-  <spine toc="ncx">
-    <itemref idref="chapter1" />
-    <itemref idref="appendix" />
-  </spine>
-
-</package>