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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"
}
--- where have all the comments gone?
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 feature_list = { }
local report = logs.names_report
--- ugh TODO use lpeg instead
local function isstyle(s)
local style = string.lower(s):split("/")
for _,v in next, style do
if v == "b" then
feature_list.style = "bold"
elseif v == "i" then
feature_list.style = "italic"
elseif v == "bi" or v == "ib" then
feature_list.style = "bolditalic"
elseif v:find("^s=") then
feature_list.optsize = v:split("=")[2]
elseif v == "aat" or v == "icu" or v == "gr" then
report("log", 0,
"load font", "unsupported font option: %s", v)
elseif not v:is_empty() then
feature_list.style = v:gsub("[^%a%d]", "")
end
end
end
local defaults = {
dflt = {
"ccmp", "locl", "rlig", "liga", "clig",
"kern", "mark", "mkmk", 'itlc',
},
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"
report("log", 0, "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 feature_list[v] ~= false then
feature_list[v] = true
end
end
end
local function issome () feature_list.lookup = 'name' end
local function isfile () feature_list.lookup = 'file' end
local function isname () feature_list.lookup = 'name' end
local function thename(s) feature_list.name = s end
local function issub (v) feature_list.sub = v end
local function istrue (s) feature_list[s] = true end
local function isfalse(s) feature_list[s] = false end
local function iskey (k,v) feature_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
--[[phg-- this prevents matching of absolute paths as file names --]]--
local namespec = (1-S("/:("))^1
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
feature_list = { }
lpeg.match(pattern,specification.specification)
set_default_features(feature_list.script)
if feature_list.style then
specification.style = feature_list.style
feature_list.style = nil
end
if feature_list.optsize then
specification.optsize = feature_list.optsize
feature_list.optsize = nil
end
if feature_list.name then
if resolvers.findfile(feature_list.name, "tfm") then
feature_list.lookup = "file"
feature_list.name = file.addsuffix(feature_list.name, "tfm")
elseif resolvers.findfile(feature_list.name, "ofm") then
feature_list.lookup = "file"
feature_list.name = file.addsuffix(feature_list.name, "ofm")
end
specification.name = feature_list.name
feature_list.name = nil
end
if feature_list.lookup then
specification.lookup = feature_list.lookup
feature_list.lookup = nil
end
if feature_list.sub then
specification.sub = feature_list.sub
feature_list.sub = nil
end
if not feature_list.mode then
-- if no mode is set, use our default
feature_list.mode = fonts.mode
end
specification.features.normal = fonts.handlers.otf.features.normalize(feature_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
-- vim:tw=71:sw=4:ts=4:expandtab
|
