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if not modules then modules = { } end modules ['font-ltx'] = {
version = 1.001,
comment = "companion to luatex-*.tex",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local fonts = fonts
-- A bit of tuning for definitions.
fonts.constructors.namemode = "specification" -- somehow latex needs this (changed name!) => will change into an overload
-- tricky: we sort of bypass the parser and directly feed all into
-- the sub parser
function fonts.definers.getspecification(str)
return "", str, "", ":", str
end
-- the generic name parser (different from context!)
local list = { }
local function isstyle(s)
local style = string.lower(s):split("/")
for _,v in ipairs(style) do
if v == "b" then
list.style = "bold"
elseif v == "i" then
list.style = "italic"
elseif v == "bi" or v == "ib" then
list.style = "bolditalic"
elseif v:find("^s=") then
list.optsize = v:split("=")[2]
elseif v == "aat" or v == "icu" or v == "gr" then
logs.report("load font", "unsupported font option: %s", v)
elseif not v:is_empty() then
list.style = v:gsub("[^%a%d]", "")
end
end
end
local defaults = {
dflt = {
"ccmp", "locl", "rlig", "liga", "clig",
"kern", "mark", "mkmk",
},
arab = {
"ccmp", "locl", "isol", "fina", "fin2",
"fin3", "medi", "med2", "init", "rlig",
"calt", "liga", "cswh", "mset", "curs",
"kern", "mark", "mkmk",
},
deva = {
"ccmp", "locl", "init", "nukt", "akhn",
"rphf", "blwf", "half", "pstf", "vatu",
"pres", "blws", "abvs", "psts", "haln",
"calt", "blwm", "abvm", "dist", "kern",
"mark", "mkmk",
},
khmr = {
"ccmp", "locl", "pref", "blwf", "abvf",
"pstf", "pres", "blws", "abvs", "psts",
"clig", "calt", "blwm", "abvm", "dist",
"kern", "mark", "mkmk",
},
thai = {
"ccmp", "locl", "liga", "kern", "mark",
"mkmk",
},
hang = {
"ccmp", "ljmo", "vjmo", "tjmo",
},
}
defaults.beng = defaults.deva
defaults.guru = defaults.deva
defaults.gujr = defaults.deva
defaults.orya = defaults.deva
defaults.taml = defaults.deva
defaults.telu = defaults.deva
defaults.knda = defaults.deva
defaults.mlym = defaults.deva
defaults.sinh = defaults.deva
defaults.syrc = defaults.arab
defaults.mong = defaults.arab
defaults.nko = defaults.arab
defaults.tibt = defaults.khmr
defaults.lao = defaults.thai
local function set_default_features(script)
local features
local script = script or "dflt"
logs.report("load font", "auto-selecting default features for script: %s", script)
if defaults[script] then
features = defaults[script]
else
features = defaults["dflt"]
end
for _,v in next, features do
if list[v] ~= false then
list[v] = true
end
end
end
local function issome () list.lookup = 'name' end
local function isfile () list.lookup = 'file' end
local function isname () list.lookup = 'name' end
local function thename(s) list.name = s end
local function issub (v) list.sub = v end
local function istrue (s) list[s] = true end
local function isfalse(s) list[s] = false end
local function iskey (k,v) list[k] = v end
local P, S, R, C = lpeg.P, lpeg.S, lpeg.R, lpeg.C
local spaces = P(" ")^0
local namespec = (1-S("/:("))^0 -- was: (1-S("/: ("))^0
local filespec = (R("az", "AZ") * P(":"))^-1 * (1-S(":("))^1
local stylespec = spaces * P("/") * (((1-P(":"))^0)/isstyle) * spaces
local filename = (P("file:")/isfile * (filespec/thename)) + (P("[") * P(true)/isname * (((1-P("]"))^0)/thename) * P("]"))
local fontname = (P("name:")/isname * (namespec/thename)) + P(true)/issome * (namespec/thename)
local sometext = (R("az","AZ","09") + S("+-."))^1
local truevalue = P("+") * spaces * (sometext/istrue)
local falsevalue = P("-") * spaces * (sometext/isfalse)
local keyvalue = P("+") + (C(sometext) * spaces * P("=") * spaces * C(sometext))/iskey
local somevalue = sometext/istrue
local subvalue = P("(") * (C(P(1-S("()"))^1)/issub) * P(")") -- for Kim
local option = spaces * (keyvalue + falsevalue + truevalue + somevalue) * spaces
local options = P(":") * spaces * (P(";")^0 * option)^0
local pattern = (filename + fontname) * subvalue^0 * stylespec^0 * options^0
local function colonized(specification) -- xetex mode
list = { }
lpeg.match(pattern,specification.specification)
set_default_features(list.script)
if list.style then
specification.style = list.style
list.style = nil
end
if list.optsize then
specification.optsize = list.optsize
list.optsize = nil
end
if list.name then
if resolvers.findfile(list.name, "tfm") then
list.lookup = "file"
list.name = file.addsuffix(list.name, "tfm")
elseif resolvers.findfile(list.name, "ofm") then
list.lookup = "file"
list.name = file.addsuffix(list.name, "ofm")
end
specification.name = list.name
list.name = nil
end
if list.lookup then
specification.lookup = list.lookup
list.lookup = nil
end
if list.sub then
specification.sub = list.sub
list.sub = nil
end
specification.features.normal = fonts.handlers.otf.features.normalize(list)
return specification
end
fonts.definers.registersplit(":",colonized,"cryptic")
fonts.definers.registersplit("", colonized,"more cryptic") -- catches \font\text=[names]
function fonts.definers.applypostprocessors(tfmdata)
local postprocessors = tfmdata.postprocessors
if postprocessors then
for i=1,#postprocessors do
local extrahash = postprocessors[i](tfmdata) -- after scaling etc
if type(extrahash) == "string" and extrahash ~= "" then
-- e.g. a reencoding needs this
extrahash = string.gsub(lower(extrahash),"[^a-z]","-")
tfmdata.properties.fullname = format("%s-%s",tfmdata.properties.fullname,extrahash)
end
end
end
return tfmdata
end
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