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if not modules then modules = { } end modules ['luatex-languages'] = {
version = 1.001,
comment = "companion to luatex-languages.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- We borrow from ConTeXt.
languages = languages or { }
local loaded = { }
function languages.loadpatterns(tag)
if not loaded[tag] then
loaded[tag] = 0
local filename = kpse.find_file("lang-" .. tag .. ".lua")
if not filename or filename == "" then
texio.write("<unknown language file for: " .. tag .. ">")
else
local whatever = loadfile(filename)
if type(whatever) == "function" then
whatever = whatever()
if type(whatever) == "table" then
texio.write("<language file: " .. tag .. ">")
local characters = whatever.patterns.characters or ""
local patterns = whatever.patterns.data or ""
local exceptions = whatever.exceptions.data or ""
for b in string.utfvalues(characters) do
-- what about uppercase
-- lang.sethjcode(b,b)
tex.setlccode(b,b)
end
local language = lang.new()
lang.patterns(language, patterns)
lang.hyphenation(language, exceptions)
loaded[tag] = lang.id(language)
else
texio.write("<invalid language table: " .. tag .. ">")
os.exit()
end
else
texio.write("<invalid language file: " .. tag .. ">")
os.exit()
end
end
end
return loaded[tag]
end
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