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if not modules then modules = { } end modules ['font-san'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA ADE & śrīrāma",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- \definefontfeature[demo][sanitizer=demo]
-- \definedfont[Serif*default,demo] test context test
-- \definedfont[Serif*default] test context test
local keys, insert, copytable = table.keys, table.insert, table.copy
local utfvalues, utfbyte = utf.values, utf.byte
local sanitizers = { }
local trace = false
local report = logs.reporter("fonts", "sanitizers")
trackers.register("fonts.sanitizers", function(v) trace = v end)
function fonts.registersanitizer(name,vector)
sanitizers[name] = vector
end
local function split(s)
local t = { }
for value in utfvalues(s) do
t[#t+1] = value
end
return t
end
local function wrap(t)
for i=1,#t do
t[i] = { t[i] }
end
return t
end
local function initializesanitizer(tfmdata,value)
local resources = tfmdata.resources
local sanitized = resources.sanitized
if not sanitized then
local sanitizer = false
local goodies = tfmdata.goodies
if goodies then
for i=1,#goodies do
local goodie = goodies[i]
local sanitizers = goodie.sanitizers
sanitizer = sanitizers and sanitizers[value]
if sanitizer then
report("using sanitizer %a from goodie file",value)
break
end
end
end
if not sanitizer then
sanitizer = sanitizers[value]
if sanitizer then
report("using sanitizer %a",value)
end
end
resources.sanitized = true
if sanitizer then
local mapping = sanitizer.mapping
if mapping then
local keys = keys(mapping)
local maps = { }
table.sort(keys, function(a,b) return a > b end)
for i = 1,#keys do
local k = keys[i]
keys[i] = split(k)
maps[i] = split(mapping[k])
end
for i=1,#maps do
local k = keys[i]
local m = maps[i]
if trace then
-- m = copytable(m)
-- insert(m,1,utfbyte("["))
-- insert(m, utfbyte("]"))
local t = { utfbyte("[") }
t[#t+1] = 0x200D -- zwnj
for i=1,#m do
t[#t+1] = m[i]
t[#t+1] = 0x200D -- zwnj
end
t[#t+1] = utfbyte("]")
end
maps[i] = { type = "multiple", data = { [k[1]] = m } }
keys[i] = { current = wrap(k) , lookups = { i } }
end
local specification = {
name = "sanitizer",
type = "chainsubstitution",
prepend = 1,
nocheck = true,
default = true,
lookups = maps,
data = { rules = keys },
}
local s = fonts.handlers.otf.enhancers.addfeature(
tfmdata,"sanitizer",specification, true
)
insert(resources.sequences,1,s)
end
end
end
end
-- has to come *after* devanagari because we need to push it in front
-- ... it could be a built-in
fonts.constructors.features.otf.register {
name = "sanitizer",
description = "inject sanitizer features",
initializers = {
node = initializesanitizer,
},
}
local dev2rkrf = {
["के्र"] = "क्रे",
["कै्र"] = "क्रै",
["खे्र"] = "ख्रे",
["खै्र"] = "ख्रै",
["गे्र"] = "ग्रे",
["गै्र"] = "ग्रै",
["घे्र"] = "घ्रे",
["घै्र"] = "घ्रै",
-- not required: placed here just to show how bad some fonts are :(
-- ["ङे्र"] = "ङ्रे",
-- ["ङै्र"] = "ङ्रै",
["चे्र"] = "च्रे",
["चै्र"] = "च्रै",
["छे्र"] = "छ्रे",
["छै्र"] = "छ्रै",
["जे्र"] = "ज्रे",
["जै्र"] = "ज्रै",
["झे्र"] = "झ्रे",
["झै्र"] = "झ्रै",
["ञे्र"] = "ञ्रे",
["ञै्र"] = "ञ्रै",
["णे्र"] = "ण्रे",
["णै्र"] = "ण्रै",
["ते्र"] = "त्रे",
["तै्र"] = "त्रै",
["थे्र"] = "थ्रे",
["थै्र"] = "थ्रै",
["दे्र"] = "द्रे",
["दै्र"] = "द्रै",
["धे्र"] = "ध्रे",
["धै्र"] = "ध्रै",
["ने्र"] = "न्रे",
["नै्र"] = "न्रै",
["पे्र"] = "प्रे",
["पै्र"] = "प्रै",
["फे्र"] = "फ्रे",
["फै्र"] = "फ्रै",
["बे्र"] = "ब्रे",
["बै्र"] = "ब्रै",
["भे्र"] = "भ्रे",
["भै्र"] = "भ्रै",
["मे्र"] = "म्रे",
["मै्र"] = "म्रै",
["ये्र"] = "य्रे",
["यै्र"] = "य्रै",
-- some fonts might need this, some might not: weird
-- for example: Shobhika does not need it but Noto Serif does :(
-- ["ले्र"] = "ल्रे",
-- ["लै्र"] = "ल्रै",
["वे्र"] = "व्रे",
["वै्र"] = "व्रै",
["से्र"] = "स्रे",
["सै्र"] = "स्रै",
["शे्र"] = "श्रे",
["शै्र"] = "श्रै",
["षे्र"] = "ष्रे",
["षै्र"] = "ष्रै",
["हे्र"] = "ह्रे",
["है्र"] = "ह्रै",
-- some fonts might need this, some might not: weird
-- ["ळे्र"] = "ळ्रे",
-- ["ळै्र"] = "ळ्रै",
}
local demomapping = {
luatex = "LuaTeX",
metapost = "MetaPost",
context = "ConTeXt",
metafun = "MetaFun",
}
fonts.registersanitizer("dev2rkrf", { mapping = dev2rkrf })
fonts.registersanitizer("demo", { mapping = demomapping })
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