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module("exec_epub",package.seeall)
local lfs = require("lfs")
local os = require("os")
local io = require("io")
--local ebookutils = require("ebookutils")
local ebookutils = require "mkutils"
-- font loading doesn't work, font database format changes often
-- and it is different between TL and Miktex
-- local load_font = require("list-fonts")
local outputdir_name="OEBPS"
local metadir_name = "META-INF"
local mimetype_name="mimetype"
outputdir=""
outputfile=""
outputfilename=""
basedir = ""
tidy = false
local include_fonts = false
local metadir=""
function prepare(params)
local randname=tostring(math.random(12000))
-- if not ebookutils.file_exists("tex4ht.env") then
-- local env_file = kpse.find_file("epub2.env")
--print("Local env file: "..env_file)
-- ebookutils.copy(env_file,"tex4ht.env")
-- end
local makedir= function(path)
local current = lfs.currentdir()
local dir = ebookutils.prepare_path(path .. "/")
if type(dir) == "table" then
local parts,msg = ebookutils.find_directories(dir)
if parts then
ebookutils.mkdirectories(parts)
end
end
lfs.chdir(current)
end
basedir = params.input.."-".. params.format
outputdir= basedir.."/"..outputdir_name --"outdir-"..randname --os.tmpdir()
makedir(outputdir)
-- lfs.mkdir(outputdir)
--ebookutils.mkdirectories(ebookutils.prepare_path(outputdir.."/"))
metadir = basedir .."/" .. metadir_name --"metadir-"..randname
makedir(metadir)
--local dd = ebookutils.prepare_path(metadir.."/")
--for _,d in pairs(dd) do print("metadir path: "..d) end
-- lfs.mkdir(metadir)
--local status, msg = ebookutils.mkdirectories(ebookutils.prepare_path(metadir.."/"))
--if not status then print("make mmetadir error:" ..msg) end
mimetype= basedir .. "/" ..mimetype_name --os.tmpname()
print(outputdir)
print(mimetype)
tidy = params.tidy
include_fonts = params.include_fonts
params["t4ht_par"] = params["t4ht_par"] -- + "-d"..string.format(params["t4ht_dir_format"],outputdir)
return(params)
end
function run(out,params)
--local currentdir=
outputfilename=out
outputfile = outputfilename..".epub"
print("Output file: "..outputfile)
--lfs.chdir(metadir)
local m= io.open(metadir.."/container.xml","w")
m:write([[
<?xml version="1.0"?>
<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>
]])
m:close()
--lfs.chdir("..")
m=io.open(mimetype,"w")
m:write("application/epub+zip")
m:close()
local htlatex_run = "${htlatex} ${input} \"${config}${tex4ht_sty_par}\" \"${tex4ht_par}\" \"${t4ht_par}\" \"${latex_par}\"" % params
print("Make4ht run")
print("-------------------")
params.config_file.Make.params = params
local mode = params.mode
if params.config_file.Make:length() < 1 then
if mode == "draft" then
params.config_file.Make:htlatex()
else
params.config_file.Make:htlatex()
params.config_file.Make:htlatex()
params.config_file.Make:htlatex()
end
end
if #params.config_file.Make.image_patterns > 0 then
params["t4ht_par"] = params["t4ht_par"] .." -p"
end
params.config_file.Make:tex4ht()
params.config_file.Make:t4ht()
params.config_file.Make:run()
print("-------------------")
--[[for k,v in pairs(params.config_file.Make) do
print(k.. " : "..type(v))
end--]]
--print(os.execute(htlatex_run))
end
local mimetypes = {
css = "text/css",
png = "image/png",
jpg = "image/jpeg",
gif = "image/gif",
svg = "image/svg+xml",
html= "application/xhtml+xml",
xhtml= "application/xhtml+xml",
ncx = "application/x-dtbncx+xml",
otf = "application/opentype",
ttf = "application/truetype",
woff = "application/font-woff",
js = "text/javascript"
}
function make_opf()
-- Join files content.opf and content-part2.opf
-- make item record for every converted image
local lg_item = function(item)
-- Find mimetype and make item tag for each converted file in the lg file
local fname,ext = item:match("([%a%d%_%-]*)%p([%a%d]*)$")
local mimetype = mimetypes[ext] or ""
if mimetype == "" then print("Mimetype for "..ext.." is not registered"); return nil end
local dir_part = item:split("/")
table.remove(dir_part,#dir_part)
local id=table.concat(dir_part,"-")..fname.."_"..ext
return "<item id='"..id .. "' href='"..item.."' media-type='"..mimetype.."' />",id
end
local find_all_files= function(s,r)
local r = r or "([%a%d%_%-]*)%.([x]?html)"
local files = {}
for i, ext in s:gmatch(r) do
--local i, ext = s:match(r)-- do
ext = ext or "true"
files[i] = ext
end
return files
end
local tidyconf = nil
if tidy then
tidyconf = kpse.find_file("tidyconf.conf")
end
--local opf_first_part = outputdir .. "/content.opf"
local opf_first_part = "content.opf"
local opf_second_part = "content-part2.opf"
--local opf_second_part = outputdir .. "/content-part2.opf"
if
ebookutils.file_exists(opf_first_part) and ebookutils.file_exists(opf_second_part)
then
local h_first = io.open(opf_first_part,"r")
local h_second = io.open(opf_second_part,"r")
local opf_complete = {}
table.insert(opf_complete,h_first:read("*all"))
local used_html = find_all_files(opf_complete[1])
local lg_file = ebookutils.parse_lg(outputfilename..".lg")
local used_files = lg_file["files"]
--[[for f in lfs.dir("./OEBPS") do
--table.insert(used_files,f)
--used_files[f] = true
end--]]
local all_html = find_all_files(table.concat(used_files,"\n"))
local outside_spine = {}
-- This was duplicated code
--[[for i, ext in pairs(all_html) do
if not used_html[i] then
print("Prvni insert: ".. i .."."..ext)
local item, id = lg_item(i.."."..ext)
table.insert(opf_complete,item)
table.insert(outside_spine,id)
end
end--]]
local all_used_files = find_all_files(opf_complete[1],"([%a%d%-%_]+%.[%a%d]+)")
local used_paths = {}
for _,k in ipairs(lg_file["files"]) do
local ext = k:match("%.([%a%d]*)$")
local parts = k:split "/"
local fn = parts[#parts]
local allow_in_spine = {html="",xhtml = "", xml = ""}
table.remove(parts,#parts)
--table.insert(parts,1,"OEBPS")
table.insert(parts,1,outputdir)
--print("SSSSS "..fn.." ext .." .. ext)
--if string.find("jpg gif png", ext) and not all_used_files[k] then
local item,id = lg_item(k)
if item then
local path = table.concat(parts)
if not used_paths[path] then
ebookutils.mkdirectories(parts)
used_paths[path]=true
end
if allow_in_spine[ext] and tidy then
if tidyconf then
print("Tidy: "..k)
local run ="tidy -c -w 200 -q -utf8 -m -config " .. tidyconf .." " .. k
os.execute(run)
else
print "Tidy: Cannot load tidyconf.conf"
end
end
ebookutils.copy(k, outputdir .. "/"..k)
if not all_used_files[fn] then
table.insert(opf_complete,item)
if allow_in_spine[ext] then
table.insert(outside_spine,id)
end
end
end
end
for _,f in ipairs(lg_file["images"]) do
local f = f.output
local p = lg_item(f)
ebookutils.copy(f, outputdir .. "/"..f)
table.insert(opf_complete,p)
end
local end_opf = h_second:read("*all")
local spine_items = {}
for _,i in ipairs(outside_spine) do
table.insert(spine_items,
'<itemref idref="${idref}" linear="no" />' % {idref=i})
end
table.insert(opf_complete,end_opf % {spine = table.concat(spine_items,"\n")})
h_first:close()
h_second:close()
h_first = io.open(opf_first_part,"w")
local opf_completed = table.concat(opf_complete,"\n")
-- poor man's tidy: remove trailing whitespace befora xml tags
opf_completed = opf_completed:gsub("[ ]*<","<")
h_first:write(opf_completed)
h_first:close()
os.remove(opf_second_part)
--ebookutils.copy(outputfilename ..".css",outputdir.."/")
ebookutils.copy(opf_first_part,outputdir.."/"..opf_first_part)
--for c,v in pairs(lg_file["fonts"]) do
-- print(c, table.concat(v,", "))
--end
--print(table.concat(opf_complete,"\n"))
else
print("Missing opf file")
end
end
local function find_zip()
if io.popen("zip -v","r"):close() then
return "zip"
elseif io.popen("miktex-zip -v","r"):close() then
return "miktex-zip"
end
print "It appears you don't have zip command installed. I can't pack the ebook"
return "zip"
end
function pack_container()
local ncxfilename = outputdir .. "/" .. outputfilename .. ".ncx"
if os.execute("tidy -v") > 0 then
print("Warning:\n tidy command seems missing, you should install it" ..
" in order\n to make valid epub file")
print("Using regexp based cleaning")
local lines = {}
for line in io.lines(ncxfilename) do
local content = line:gsub("[ ]*<","<")
if content:len() > 0 then
table.insert(lines, content)
end
end
table.insert(lines,"")
local ncxfile = io.open(ncxfilename,"w")
ncxfile:write(table.concat(lines,"\n"))
ncxfile:close()
else
print("Tidy ncx "..
os.execute("tidy -xml -i -q -utf8 -m " .. ncxfilename))
print("Tidy opf "..
os.execute("tidy -xml -i -q -utf8 -m " ..
outputdir .. "/" .. "content.opf"))
end
print(mimetype)
local zip = find_zip()
print("Pack mimetype " .. os.execute("cd "..basedir.." && "..zip.." -q0X "..outputfile .." ".. mimetype_name))
print("Pack metadir " .. os.execute("cd "..basedir.." && "..zip.." -qXr9D " .. outputfile.." "..metadir_name))
print("Pack outputdir " .. os.execute("cd "..basedir.." && "..zip.." -qXr9D " .. outputfile.." "..outputdir_name))
print("Copy generated epub ")
ebookutils.cp(basedir .."/"..outputfile, outputfile)
end
function writeContainer()
make_opf()
pack_container()
end
local function deldir(path)
for entry in lfs.dir(path) do
if entry~="." and entry~=".." then
os.remove(path.."/"..entry)
end
end
os.remove(path)
--]]
end
function clean()
--deldir(outputdir)
--deldir(metadir)
--os.remove(mimetype)
end
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