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--
-- This is file `luaotfload.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- luaotfload.dtx (with options: `lua')
-- This is a generated file.
--
-- Copyright (C) 2009-2010 by by Elie Roux <elie.roux@telecom-bretagne.eu>
-- and Khaled Hosny <khaledhosny@eglug.org>
-- (Support: <lualatex-dev@tug.org>.)
--
-- This work is under the CC0 license.
--
-- This work consists of the main source file luaotfload.dtx
-- and the derived files
-- luaotfload.sty, luaotfload.lua
--
module("luaotfload", package.seeall)
luaotfload.module = {
name = "luaotfload",
version = 1.27,
date = "2012/05/28",
description = "OpenType layout system.",
author = "Elie Roux & Hans Hagen",
copyright = "Elie Roux",
license = "CC0"
}
--[[doc--
No final decision has been made on how to handle font definition.
At the moment, there are three candidates: The \textsf{generic}
callback as hard-coded in the font loader, the \textsf{old} wrapper,
and a simplified version of the latter (\textsf{patch}) that does
nothing besides applying font patches.
--doc]]--
luaotfload.font_definer = "patch" --- | “generic” | “old”
local fl_prefix = "otfl" -- “luatex” for luatex-plain
--- these will be provided by luatexbase some time
local error = function(...) print("err", string.format(...)) end
local log = function(...) print("log", string.format(...)) end
kpse.init_prog("", 600, "/")
local luatex_version = 60
if tex.luatexversion < luatex_version then
warning("LuaTeX v%.2f is old, v%.2f is recommended.",
tex.luatexversion/100,
luatex_version /100)
end
local loadmodule = function (name)
local tofind = fl_prefix .."-"..name
local found = kpse.find_file(tofind,"tex")
if found then
log("loading file %s.", found)
dofile(found)
else
--error("file %s not found.", tofind)
error("file %s not found.", tofind)
end
end
luaotfload.loadmodule = loadmodule --- required in deferred code
--[[-- keep --]]
--- from Hans (all merged):
--- file name modified include name
--- × basics-gen.lua t luat-basics-gen
--- × font-def -> fonts-def t luatex-font-def (there’s also the normal font-def!)
--- × fonts-enc f luatex-font-enc
--- × fonts-ext t luatex-fonts-ext
--- × fonts-lua f luatex-fonts-lua
--- fonts-tfm f luatex-fonts-tfm
--- × fonts-cbk f luatex-fonts-lua
--- from luaotfload:
--- otfl-luat-ovr.lua -- override some luat-dum functions
--- otfl-font-clr.lua
--- otfl-font-ltx.lua
--- otfl-font-nms.lua
--- otfl-font-otc.lua
--- otfl-font-pfb.lua -- ?
--[[-- new --]]
--- basics-nod (merged as fonts-nod !)
--- fonts-demo-vf-1.lua
--- fonts-syn (merged)
--[[-- merged, to be dropped --]]
--- otfl-data-con.lua
--- otfl-font-cid.lua
--- otfl-font-con.lua
--- otfl-font-ini.lua
--- otfl-font-ota.lua
--- otfl-font-otb.lua
--- otfl-font-otf.lua
--- otfl-font-oti.lua
--- otfl-font-otn.lua
--[[--
it all boils down to this: we load otfl-fonts.lua
which takes care of loading the merged file.
that’s it, go thank Hans!
--]]--
--[[doc--
We treat the fontloader as a black box so behavior is consistent
between formats.
The wrapper file is |otfl-fonts.lua| which we imported from
\LUATEX-Plain.
It has roughly two purposes:
(\textit{1}) insert the functionality required for fontloader, and
(\textit{2}) put it in place via the respective callbacks.
How the first step is executed depends on the presence on the
\emph{merged font loader code}.
In \textsf{luaotfload} this is contained in the file
|otfl-fonts-merged.lua|.
If this file cannot be found, the original libraries from \CONTEXT of
which the merged code was composed are loaded instead.
Hans provides two global tables to control the font loader:
\begin{tabular}{ll}
\texttt{generic\textunderscore context} &
encapsulation mechanism, callback functions
\\
\texttt{non\textunderscore generic\textunderscore context} &
customized code insertion
\\
\end{tabular}
With \verb|non_generic_context| we can tailor the font loader insertion
to our file naming habits (key \verb|load_before|).
Additionally, \verb|skip_loading| can be unset to force loading of
the original libraries as though the merged code was absent.
Another key, \verb|load_after| is called at the time when the font
loader is actually inserted.
In combination with the option \verb|no_callbacks_yet| in
\verb|generic_context|, we can insert our own,
\textsf{luatexbase}-style callback handling here.
--doc]]--
if not _G. generic_context then _G. generic_context = { } end
if not _G.non_generic_context then _G.non_generic_context = { } end
generic_context.no_callbacks_yet = true
_G.non_generic_context = { luatex_fonts = {
load_before = "otfl-fonts-merged.lua",
-- load_after = nil, --- TODO, this is meant for callbacks
skip_loading = true,
}}
loadmodule("fonts.lua")
--- then continue in luaotfload-deferred.lua
-- vim:tw=71:sw=2:ts=2:expandtab
-- End of File `luaotfload.lua'.
|
