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--
-- This is file `microtype.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- microtype.dtx (with options: `luafile')
--
-- ------------------------------------------------------------------------
--
-- The `microtype' package
-- Subliminal refinements towards typographical perfection
-- Copyright (c) 2004--2019 R Schlicht <w.m.l@gmx.net>
--
-- This work may be distributed and/or modified under the conditions of the
-- LaTeX Project Public License, either version 1.3c of this license or (at
-- your option) any later version. The latest version of this license is in:
-- http://www.latex-project.org/lppl.txt, and version 1.3c or later is part
-- of all distributions of LaTeX version 2005/12/01 or later.
--
-- This work has the LPPL maintenance status `author-maintained'.
--
-- This work consists of the files microtype.dtx and microtype.ins and the
-- derived files microtype.sty, microtype-pdftex.def, microtype-luatex.def,
-- microtype-xetex.def, microtype.lua and letterspace.sty.
--
-- ------------------------------------------------------------------------
-- This file contains auxiliary lua functions.
-- It was originally contributed by Elie Roux <elie.roux{at}telecom-bretagne.eu>.
-- (Bugs are mine.)
-- ------------------------------------------------------------------------
--
microtype = microtype or {}
local microtype = microtype
microtype.module = {
name = "microtype",
version = "2.7d",
date = "2019/11/18",
description = "microtype module.",
author = "E. Roux, R. Schlicht and P. Gesang",
copyright = "E. Roux, R. Schlicht and P. Gesang",
license = "LPPL",
}
function microtype.info(...)
luatexbase.module_info("microtype",...)
end
local find = string.find
local match = string.match
local tex_write = tex.write
local catpackage
if luatexbase.registernumber then
catpackage = luatexbase.registernumber("catcodetable@atletter") -- LaTeX
else
catpackage = luatexbase.catcodetables.CatcodeTableAtletter -- luatexbase
end
function microtype.sprint (...)
tex.sprint(catpackage, ...)
end
local function if_int(s)
if find(s,"^-*[0-9]+ *$") then
tex_write("@firstoftwo")
else
tex_write("@secondoftwo")
end
end
microtype.if_int = if_int
local function if_dimen(s)
if (find(s, "^-*[0-9]+(%a*) *$") or
find(s, "^-*[0-9]*[.,][0-9]+(%a*) *$")) then
tex_write("@firstoftwo")
else
tex_write("@secondoftwo")
end
end
microtype.if_dimen = if_dimen
local function if_str_eq(s1, s2)
if s1 == s2 then
tex_write("@firstoftwo")
else
tex_write("@secondoftwo")
end
end
microtype.if_str_eq = if_str_eq
local function do_font()
if fonts then
local thefont
if fonts.ids then --- legacy luaotfload
thefont = fonts.ids[font.current()]
else --- new location
thefont = fonts.hashes.identifiers[font.current()]
end
if thefont then
for i,v in next,thefont.characters do
if v.index == nil or v.index > 0 then
microtype.sprint([[\@tempcnta=]]..i..[[\relax\MT@dofont@function]])
end
end
end
end
end
microtype.do_font = do_font
microtype.ligs = microtype.ligs or { }
local function noligatures(fontcs,liga)
local fontcs = match(fontcs,"([^ ]+)")
microtype.ligs[fontcs] = microtype.ligs[fontcs] or { }
table.insert(microtype.ligs[fontcs],liga)
end
microtype.noligatures = noligatures
local function keepligature(c)
local nodedirect = node.direct
local getfield = nodedirect.getfield
local getfont = nodedirect.getfont
local f,ch
if type(c) == "userdata" then -- in older luaotfload versions, c was a node
f = c.font
ch = c.components.char
else -- since 2.6, c is a (direct node) number
f = getfont(c)
ch = getfield(getfield(c,"components"),"char")
end
-- if ch then -- should always be true
local ligs = microtype.ligs[match(tex.fontidentifier(f),"\\([^ ]+)")]
if ligs then
for _,lig in pairs(ligs) do
if lig == "_all_" or tonumber(lig) == ch then
return false
end
end
end
return true
-- end
end
if luaotfload and luaotfload.letterspace then
if luaotfload.letterspace.keepligature then
microtype.info("overwriting function `keepligature'")
end
luaotfload.letterspace.keepligature = keepligature
end
if luaotfload and luaotfload.aux and luaotfload.aux.slot_of_name then
local slot_of_name = luaotfload.aux.slot_of_name
microtype.name_to_slot = function(name, unsafe)
return slot_of_name(font.current(), name, unsafe)
end
else
-- we dig into internal structure (should be avoided)
local function name_to_slot(name, unsafe)
if fonts then
local unicodes
if fonts.ids then --- legacy luaotfload
local tfmdata = fonts.ids[font.current()]
if not tfmdata then return end
unicodes = tfmdata.shared.otfdata.luatex.unicodes
else --- new location
local tfmdata = fonts.hashes.identifiers[font.current()]
if not tfmdata then return end
unicodes = tfmdata.resources.unicodes
end
local unicode = unicodes[name]
if unicode then --- does the 'or' branch actually exist?
return type(unicode) == "number" and unicode or unicode[1]
end
end
end
microtype.name_to_slot = name_to_slot
end
--
--
-- End of file `microtype.lua'.
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