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authorPhilipp Gesang <phg42.2a@gmail.com>2013-04-22 15:15:22 +0200
committerPhilipp Gesang <phg42.2a@gmail.com>2013-04-22 15:15:22 +0200
commit4f0774100b6000784cf29bcc8677e63a3169f21a (patch)
treed44e49e7a820b5cf92ee5733d43af13a6efc70a0 /luaotfload-font-ltx.lua
parent655ab8e887944e82c48d4d5c1745e00c771dbae0 (diff)
downloadluaotfload-4f0774100b6000784cf29bcc8677e63a3169f21a.tar.gz
migrate files from ‘otfl’ to ‘luaotfload’ prefix
Diffstat (limited to 'luaotfload-font-ltx.lua')
-rw-r--r--luaotfload-font-ltx.lua205
1 files changed, 205 insertions, 0 deletions
diff --git a/luaotfload-font-ltx.lua b/luaotfload-font-ltx.lua
new file mode 100644
index 0000000..afc8621
--- /dev/null
+++ b/luaotfload-font-ltx.lua
@@ -0,0 +1,205 @@
+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