Hans,
Since I didn't got a working epub for the first few tries, I did some further
inspections with epubcheck[1].
Using this minimal example:
\setupbackend[export=test.xml,xhtml=test.xhtml,css={test.css,mathml.css}]
\starttext
Test
\stoptext
The main errors are:
* opf: id has to be either "stylesheet" for css or the xhtml filename without
the suffix
* opf: itemref needs to be the name of the xhtml without the suffix
Here's a very dirty quick fix I did to get a working epub:
add after line 112 or so:
+ local id = file.removesuffix(filename)
line 116:
- used[#used+1] = format("<item id='%s' href='%s'
media-type='%s'/>",i,filename,mime)
+ if suffix == "css" then
+ id = "stylesheet"
+ elseif suffix == "ncx" then
+ id = file.suffix(filename)
+ end
+ used[#used+1] = format("<item id='%s' href='%s'
media-type='%s'/>",id,filename,mime)
line 121:
- package =
format(package,identifier,identifier,concat(used,"\n"),root)
+ package =
format(package,identifier,identifier,concat(used,"\n"),file.removesuffix(root))
I'm sure you make a better fix (I've attached the patched one in case it's
easier to diff).
Not sure if you want to do something about the other errors, but it'd be nice
to have a valid epub in the end.
Adam
[1] http://code.google.com/p/epubcheck/
Epubcheck Version 1.2
ERROR: test.tree/test.epub: extra field length for first filename must be 0, but was 28
ERROR: test.tree/test.epub/OPS/test.opf(3): value of attribute "unique-identifier" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(8): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(13): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(14): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(15): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(18): item with id 'ncx' not found
ERROR: test.tree/test.epub/OPS/test.opf(19): item with id 'test.xhtml' not found
ERROR: test.tree/test.epub/OPS/test.xhtml(12): elements from namespace "" are not allowed
Check finished with warnings or errors!
if not modules then modules = { } end modules ['mtx-epub'] = {
version = 1.001,
comment = "companion to mtxrun.lua",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local format = string.format
local concat = table.concat
local helpinfo = [[
--make create epub zip file
example:
mtxrun --script epub --make mydocument
]]
local application = logs.application {
name = "mtx-epub",
banner = "ConTeXt EPUB Helpers 0.10",
helpinfo = helpinfo,
}
-- script code
scripts = scripts or { }
scripts.epub = scripts.epub or { }
local mimetype = "application/epub+zip"
local container = [[
<?xml version="1.0" encoding="UTF-8" ?>
<container version="1.0" xmlns="urn:oasis:names:tc:opendocument:xmlns:container">
<rootfiles>
<rootfile full-path="OPS/%s" media-type="application/oebps-package+xml"/>
</rootfiles>
</container>
]]
local package = [[
<?xml version="1.0"?>
<package version="2.0" xmlns="http://www.idpf.org/2007/opf"; unique-identifier="%s">
<metadata xmlns:dc="http://purl.org/dc/elements/1.1/"; xmlns:opf="http://www.idpf.org/2007/opf";>
<dc:title>My Title</dc:title>
<dc:language>en</dc:language>
<dc:identifier id="%s" />
<dc:creator opf:file-as="Self, My" opf:role="aut">MySelf</dc:creator>
</metadata>
<manifest>
%s
</manifest>
<spine toc="ncx">
<itemref idref="%s" />
</spine>
</package>
]]
local mimetypes = {
xhtml = "application/xhtml+xml",
css = "text/css",
}
-- specification = {
-- name = "document",
-- identifier = "123",
-- root = "a.xhtml",
-- files = {
-- "a.xhtml",
-- "b.css",
-- "c.png",
-- }
-- }
function scripts.epub.make()
local filename = environment.files[1]
if filename and filename ~= "" then
filename = file.basename(filename)
local specfile = file.replacesuffix(filename,"specification")
local specification = lfs.isfile(specfile) and dofile(specfile) or { }
-- inspect(specification)
local name = specification.name or file.removesuffix(filename)
local identifier = specification.identifier or os.uuid()
local files = specification.files or { file.addsuffix(filename,"xhtml") }
local root = specification.root or files[1]
local epubname = name
local epubpath = file.replacesuffix(name,"tree")
local epubfile = file.replacesuffix(name,"epub")
local epubroot = file.replacesuffix(name,"opf")
lfs.mkdir(epubpath)
lfs.mkdir(file.join(epubpath,"META-INF"))
lfs.mkdir(file.join(epubpath,"OPS"))
local used = { }
for i=1,#files do
local filename = files[i]
local suffix = file.suffix(filename)
local id = file.removesuffix(filename)
local mime = mimetypes[suffix]
if mime then
file.copy(filename,file.join(epubpath,"OPS",filename))
if suffix == "css" then
id = "stylesheet"
elseif suffix == "ncx" then
id = file.suffix(filename)
end
used[#used+1] = format("<item id='%s' href='%s' media-type='%s'/>",id,filename,mime)
end
end
container = format(container,epubroot)
package = format(package,identifier,identifier,concat(used,"\n"),file.removesuffix(root))
io.savedata(file.join(epubpath,"mimetype"),mimetype)
io.savedata(file.join(epubpath,"META-INF","container.xml"),container)
io.savedata(file.join(epubpath,"OPS",epubroot),package)
lfs.chdir(epubpath)
os.remove(epubfile)
os.execute(format("zip %s -0 %s",epubfile,"mimetype"))
os.execute(format("zip %s -r %s",epubfile,"META-INF"))
os.execute(format("zip %s -r %s",epubfile,"OPS"))
lfs.chdir("..")
application.report("epub archive: %s",file.join(epubpath,epubfile))
end
end
--
if environment.argument("make") then
scripts.epub.make()
else
application.help()
end
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