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|
if not modules then modules = { } end modules ['s-fonts-tables'] = {
version = 1.001,
comment = "companion to s-fonts-tables.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
moduledata.fonts = moduledata.fonts or { }
moduledata.fonts.tables = moduledata.fonts.tables or { }
local rawget, type = rawget, type
local setmetatableindex = table.setmetatableindex
local sortedhash = table.sortedhash
local sortedkeys = table.sortedkeys
local concat = table.concat
local insert = table.insert
local remove = table.remove
local formatters = string.formatters
local tabletracers = moduledata.fonts.tables
local new_glyph = nodes.pool.glyph
local copy_node = nodes.copy
local setlink = nodes.setlink
local hpack = nodes.hpack
local applyvisuals = nodes.applyvisuals
local lefttoright_code = nodes.dirvalues.lefttoright
local handle_positions = fonts.handlers.otf.datasetpositionprocessor
local handle_injections = nodes.injections.handler
local context = context
local ctx_sequence = context.formatted.sequence
local ctx_char = context.char
local ctx_setfontid = context.setfontid
local ctx_type = context.formatted.type
local ctx_dontleavehmode = context.dontleavehmode
local ctx_startPair = context.startPair
local ctx_stopPair = context.stopPair
local ctx_startSingle = context.startSingle
local ctx_stopSingle = context.stopSingle
local ctx_startSingleKern = context.startSingleKern
local ctx_stopSingleKern = context.stopSingleKern
local ctx_startPairKern = context.startPairKern
local ctx_stopPairKern = context.stopPairKern
local ctx_NC = context.NC
local ctx_NR = context.NR
local digits = {
dflt = {
dflt = "1234567890 1/2",
},
arab = {
dflt = "",
},
latn = {
dflt = "1234567890 1/2",
}
}
local punctuation = {
dflt = {
dflt = ". , : ; ? ! ‹ › « »",
},
}
local symbols = {
dflt = {
dflt = "@ # $ % & * () [] {} <> + - = / |",
},
}
local LATN = "abcdefghijklmnopqrstuvwxyz"
local uppercase = {
latn = {
dflt = LATN,
fra = LATN .. " ÀÁÂÈÉÊÒÓÔÙÚÛÆÇ",
},
grek = {
dftl = "ΑΒΓΔΕΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΩ",
},
cyrl= {
dflt = "АБВГДЕЖЗИІЙКЛМНОПРСТУФХЦЧШЩЪЫЬѢЭЮЯѲ"
},
}
local latn = "abcdefghijklmnopqrstuvwxyz"
local lowercase = {
latn = {
dftl = latn,
nld = latn .. " ïèéë",
deu = latn .. " äöüß",
fra = latn .. " àáâèéêòóôùúûæç",
},
grek = {
dftl = "αβγδεηθικλμνξοπρστυφχψω",
},
cyrl= {
dflt = "абвгдежзиійклмнопрстуфхцчшщъыьѣэюяѳ"
},
arab = {
dflt = "ابجدهوزحطيكلمنسعفصقرشتثخذضظغ"
},
}
local samples = {
digits = digits,
punctuation = punctuation,
symbols = symbols,
uppercase = uppercase,
lowercase = lowercase,
}
tabletracers.samples = samples
setmetatableindex(uppercase, function(t,k) return rawget(t,"latn") end)
setmetatableindex(lowercase, function(t,k) return rawget(t,"latn") end)
setmetatableindex(digits, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(symbols, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(punctuation, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(uppercase.latn, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(uppercase.grek, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(uppercase.cyrl, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(lowercase.latn, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(lowercase.grek, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(lowercase.cyrl, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(digits.dflt, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(symbols.dflt, function(t,k) return rawget(t,"dflt") end)
setmetatableindex(punctuation.dflt, function(t,k) return rawget(t,"dflt") end)
-- scaled boolean string scale string float cardinal
local function checked(specification)
specification = interfaces.checkedspecification(specification)
local id, cs = fonts.definers.internal(specification,"<module:fonts:features:font>")
local tfmdata = fonts.hashes.identifiers[id]
local resources = tfmdata.resources
return tfmdata, id, resources
end
local function nothing()
context("no entries")
context.par()
end
local function typesettable(t,keys,synonyms,nesting,prefix,depth)
if t and next(keys) then
if not prefix then
context.starttabulate { "|Tl|Tl|Tl|" }
end
for k, v in sortedhash(keys) do
if k == "synonyms" then
elseif type(v) ~= "table" then
ctx_NC()
if prefix then
context("%s.%s",prefix,k)
else
context(k)
end
ctx_NC()
-- print(v)
local tk = t[k]
if v == "<boolean>" then
context(tostring(tk or false))
elseif not tk then
context("<unset>")
elseif k == "filename" then
context(file.basename(tk))
-- elseif v == "basepoints" then
-- context("%sbp",tk)
elseif v == "<scaled>" then
context("%p",tk)
elseif v == "<table>" then
context("<table>")
else
context(tostring(tk))
end
ctx_NC()
local synonym = (not prefix and synonyms[k]) or (prefix and synonyms[formatters["%s.%s"](prefix,k)])
if synonym then
context("(% t)",synonym)
end
ctx_NC()
ctx_NR()
elseif nesting == false then
context("<table>")
elseif next(v) then
typesettable(t[k],v,synonyms,nesting,k,true)
end
end
if not prefix then
context.stoptabulate()
end
return
end
if not depth then
nothing()
end
end
local function typeset(t,keys,nesting,prefix)
local synonyms = keys.synonyms or { }
local collected = { }
for k, v in next, synonyms do
local c = collected[v]
if not c then
c = { }
collected[v] = c
end
c[#c+1] = k
end
for k, v in next, collected do
table.sort(v)
end
typesettable(t,keys,collected,nesting,prefix)
end
tabletracers.typeset = typeset
-- function tabletracers.showproperties(nesting)
-- local tfmdata = fonts.hashes.identifiers[true]
-- typeset(tfmdata.properties,fonts.constructors.keys.properties,nesting)
-- end
-- function tabletracers.showparameters(nesting)
-- local tfmdata = fonts.hashes.identifiers[true]
-- typeset(tfmdata.parameters,fonts.constructors.keys.parameters,nesting)
-- end
function tabletracers.showproperties(specification)
local tfmdata = checked(specification)
if tfmdata then
typeset(tfmdata.properties,fonts.constructors.keys.properties)
else
nothing()
end
end
function tabletracers.showparameters(specification)
local tfmdata = checked(specification)
if tfmdata then
typeset(tfmdata.parameters,fonts.constructors.keys.parameters)
else
nothing()
end
end
local f_u = formatters["%U"]
local f_p = formatters["%p"]
local function morept(t)
local r = { }
for i=1,t do
r[i] = f_p(t[i])
end
return concat(r," ")
end
local function noprefix(kind)
kind = string.gsub(kind,"^gpos_","")
kind = string.gsub(kind,"^gsub_","")
return kind
end
local function banner(index,i,format,kind,order,chain)
if chain then
ctx_sequence("sequence: %i, step %i, format: %s, kind: %s, features: % t, chain: %s",
index,i,format,noprefix(kind),order,noprefix(chain))
else
ctx_sequence("sequence: %i, step %i, format: %s, kind: %s, features: % t",
index,i,format,noprefix(kind),order)
end
end
function tabletracers.showpositionings(specification)
local tfmdata, fontid, resources = checked(specification)
if resources then
local direction = lefttoright_code -- not that relevant probably
local sequences = resources.sequences
local marks = resources.marks
local visuals = "fontkern,glyph,box"
local datasets = fonts.handlers.otf.dataset(tfmdata,fontid,0)
local function process(dataset,sequence,kind,order,chain)
local steps = sequence.steps
local order = sequence.order or order
local index = sequence.index
for i=1,#steps do
local step = steps[i]
local format = step.format
banner(index,i,format,kind,order,chain)
if kind == "gpos_pair" then
local format = step.format
if "kern" or format == "move" then
for first, seconds in sortedhash(step.coverage) do
local done = false
local zero = 0
for second, kern in sortedhash(seconds) do
if kern == 0 then
zero = zero + 1
else
if not done then
ctx_startPairKern()
end
local one = new_glyph(fontid,first)
local two = new_glyph(fontid,second)
local raw = setlink(copy_node(one),copy_node(two))
local pos = setlink(done and one or copy_node(one),copy_node(two))
pos, okay = handle_positions(pos,fontid,direction,dataset)
pos = handle_injections(pos)
applyvisuals(raw,visuals)
applyvisuals(pos,visuals)
pos = hpack(pos,"exact",nil,direction)
raw = hpack(raw,"exact",nil,direction)
ctx_NC() if not done then context(f_u(first)) end
ctx_NC() if not done then ctx_dontleavehmode() context(one) end
ctx_NC() context(f_u(second))
ctx_NC() ctx_dontleavehmode() context(two)
ctx_NC() context("%p",kern)
ctx_NC() ctx_dontleavehmode() context(raw)
ctx_NC() ctx_dontleavehmode() context(pos)
ctx_NC() ctx_NR()
done = true
end
end
if done then
ctx_stopPairKern()
end
if zero > 0 then
ctx_type("zero: %s",zero)
end
end
elseif format == "pair" then
for first, seconds in sortedhash(step.coverage) do
local done = false
local allnull = 0
local allzero = 0
local zeronull = 0
local nullzero = 0
for second, pair in sortedhash(seconds) do
local pfirst = pair[1]
local psecond = pair[2]
if not pfirst and not psecond then
allnull = allnull + 1
elseif pfirst == true and psecond == true then
allzero = allzero + 1
elseif pfirst == true and not psecond then
zeronull = zeronull + 1
elseif not pfirst and psecond == true then
nullzero = nullzero + 1
else
if pfirst == true then
pfirst = "all zero"
elseif pfirst then
pfirst = morept(pfirst)
else
pfirst = "no first"
end
if psecond == true then
psecond = "all zero"
elseif psecond then
psecond = morept(psecond)
else
psecond = "no second"
end
if not done then
ctx_startPair()
end
local one = new_glyph(fontid,first)
local two = new_glyph(fontid,second)
local raw = setlink(copy_node(one),copy_node(two))
local pos = setlink(done and one or copy_node(one),copy_node(two))
pos, okay = handle_positions(pos,fontid,direction,dataset)
pos = handle_injections(pos)
applyvisuals(raw,visuals)
applyvisuals(pos,visuals)
pos = hpack(pos,"exact",nil,direction)
raw = hpack(raw,"exact",nil,direction)
ctx_NC() if not done then context(f_u(first)) end
ctx_NC() if not done then ctx_dontleavehmode() context(one) end
ctx_NC() context(f_u(second))
ctx_NC() ctx_dontleavehmode() context(two)
ctx_NC() context(pfirst)
ctx_NC() context(psecond)
ctx_NC() ctx_dontleavehmode() context(raw)
ctx_NC() ctx_dontleavehmode() context(pos)
ctx_NC() ctx_NR()
done = true
end
end
if done then
ctx_stopPair()
end
if allnull > 0 or allzero > 0 or zeronull > 0 or nullzero > 0 then
ctx_type("both null: %s, both zero: %s, zero and null: %s, null and zero: %s",
allnull,allzero,zeronull,nullzero)
end
end
else
-- maybe
end
elseif kind == "gpos_single" then
local format = step.format
if format == "kern" or format == "move" then
local done = false
local zero = 0
for first, kern in sortedhash(step.coverage) do
if kern == 0 then
zero = zero + 1
else
if not done then
ctx_startSingleKern()
end
local one = new_glyph(fontid,first)
local raw = copy_node(one)
local pos = copy_node(one)
pos, okay = handle_positions(pos,fontid,direction,dataset)
pos = handle_injections(pos)
applyvisuals(raw,visuals)
applyvisuals(pos,visuals)
pos = hpack(pos,"exact",nil,direction)
raw = hpack(raw,"exact",nil,direction)
ctx_NC() context(f_u(first))
ctx_NC() ctx_dontleavehmode() context(one)
ctx_NC() context("%p",kern)
ctx_NC() ctx_dontleavehmode() context(raw)
ctx_NC() ctx_dontleavehmode() context(pos)
ctx_NC() ctx_NR()
done = true
end
end
if done then
ctx_stopSingleKern()
end
if zero > 0 then
ctx_type("zero: %i",zero)
end
elseif format == "single" then
local done = false
local zero = 0
local null = 0
for first, single in sortedhash(step.coverage) do
if single == false then
null = null + 1
elseif single == true then
zero = zero + 1
else
single = morept(single)
if not done then
ctx_startSingle()
end
local one = new_glyph(fontid,first)
local raw = copy_node(one)
local pos = copy_node(one)
pos, okay = handle_positions(pos,fontid,direction,dataset)
pos = handle_injections(pos)
applyvisuals(raw,visuals)
applyvisuals(pos,visuals)
raw = hpack(raw,"exact",nil,direction)
pos = hpack(pos,"exact",nil,direction)
ctx_NC() context(f_u(first))
ctx_NC() ctx_dontleavehmode() context(one)
ctx_NC() context(single)
ctx_NC() ctx_dontleavehmode() context(raw)
ctx_NC() ctx_dontleavehmode() context(pos)
ctx_NC() ctx_NR()
done = true
end
end
if done then
ctx_stopSingle()
end
if null > 0 then
if zero > 0 then
ctx_type("null: %i, zero: %i",null,zero)
else
ctx_type("null: %i",null)
end
else
if null > 0 then
ctx_type("both zero: %i",zero)
end
end
else
-- todo
end
end
end
end
local done = false
for d=1,#datasets do
local dataset = datasets[d]
local sequence = dataset[3]
local kind = sequence.type
if kind == "gpos_contextchain" or kind == "gpos_context" then
local steps = sequence.steps
for i=1,#steps do
local step = steps[i]
local rules = step.rules
if rules then
for i=1,#rules do
local rule = rules[i]
local lookups = rule.lookups
if lookups then
for i=1,#lookups do
local lookup = lookups[i]
if lookup then
local look = lookup[1]
local dnik = look.type
if dnik == "gpos_pair" or dnik == "gpos_single" then
process(dataset,look,dnik,sequence.order,kind)
end
end
end
end
end
end
end
done = true
elseif kind == "gpos_pair" or kind == "gpos_single" then
process(dataset,sequence,kind)
done = true
end
end
if done then
return
end
end
nothing()
end
local dynamics = true
function tabletracers.showsubstitutions(specification)
local tfmdata, fontid, resources = checked(specification)
if resources then
local features = resources.features
if features then
local gsub = features.gsub
if gsub then
local makes_sense = { }
for feature, scripts in sortedhash(gsub) do
for script, languages in sortedhash(scripts) do
for language in sortedhash(languages) do
local tag = formatters["dummy-%s-%s-%s"](feature,script,language)
local fnt = formatters["file:%s*%s"](file.basename(tfmdata.properties.filename),tag)
context.definefontfeature (
{ tag },
{
mode = "node",
script = script,
language = language,
[feature] = "yes"
}
)
if not dynamics then
context.definefont( { fnt }, { fnt } )
end
makes_sense[#makes_sense+1] = {
feature = feature,
tag = tag,
script = script,
language = language,
fontname = fnt,
}
end
end
end
if #makes_sense > 0 then
context.starttabulate { "|Tl|Tl|Tl|p|" }
for i=1,#makes_sense do
local data = makes_sense[i]
local script = data.script
local language = data.language
ctx_NC()
context(data.feature)
ctx_NC()
context(script)
ctx_NC()
context(language)
ctx_NC()
if not dynamics then
context.startfont { data.fontname }
else
context.addff(data.tag)
end
context.verbatim(samples.lowercase [script][language]) context.par()
context.verbatim(samples.uppercase [script][language]) context.par()
context.verbatim(samples.digits [script][language]) context.par()
context.verbatim(samples.punctuation[script][language]) context.quad()
context.verbatim(samples.symbols [script][language])
if not dynamics then
context.stopfont()
end
ctx_NC()
ctx_NR()
end
context.stoptabulate()
return
end
end
end
end
nothing()
end
function tabletracers.showunicodevariants(specification)
local tfmdata, fontid, resources = checked(specification)
if resources then
local variants = fonts.hashes.variants[fontid]
if variants then
context.starttabulate { "|c|c|c|c|c|c|c|" }
for selector, unicodes in sortedhash(variants) do
local done = false
for unicode, variant in sortedhash(unicodes) do
ctx_NC()
if not done then
context("%U",selector)
done = true
end
ctx_NC()
context("%U",unicode)
ctx_NC()
context("%c",unicode)
ctx_NC()
context("%U",variant)
ctx_NC()
context("%c",variant)
ctx_NC()
context("%c%c",unicode,selector)
ctx_NC()
context.startoverlay()
context("{\\color[trace:r]{%c}}{\\color[trace:ds]{%c}}",unicode,variant)
context.stopoverlay()
ctx_NC()
ctx_NR()
end
end
context.stoptabulate()
return
end
end
nothing()
end
local function collectligatures(steps)
local series = { }
local stack = { }
local max = 0
local function make(tree)
for k, v in sortedhash(tree) do
if k == "ligature" then
local n = #stack
if n > max then
max = n
end
series[#series+1] = { v, unpack(stack) }
else
insert(stack,k)
make(v)
remove(stack)
end
end
end
for i=1,#steps do
local step = steps[i]
local coverage = step.coverage
if coverage then
make(coverage)
end
end
return series, max
end
local function banner(index,kind,order)
ctx_sequence("sequence: %i, kind: %s, features: % t",index,noprefix(kind),order)
end
function tabletracers.showligatures(specification)
local tfmdata, fontid, resources = checked(specification)
if resources then
local characters = tfmdata.characters
local descriptions = tfmdata.descriptions
local sequences = resources.sequences
if sequences then
local done = true
for index=1,#sequences do
local sequence = sequences[index]
local kind = sequence.type
if kind == "gsub_ligature" then
local list, max = collectligatures(sequence.steps)
if #list > 0 then
banner(index,kind,sequence.order or { })
context.starttabulate { "|T|" .. string.rep("|",max) .. "|T|T|" }
for i=1,#list do
local s = list[i]
local n = #s
local u = s[1]
local c = characters[u]
local d = descriptions[u]
ctx_NC()
context("%U",u)
ctx_NC()
ctx_setfontid(fontid)
ctx_char(u)
ctx_NC()
ctx_setfontid(fontid)
for i=2,n do
ctx_char(s[i])
ctx_NC()
end
for i=n+1,max do
ctx_NC()
end
context(d.name)
ctx_NC()
context(c.tounicode)
ctx_NC()
ctx_NR()
end
context.stoptabulate()
done = true
end
end
end
if done then
return
end
end
end
nothing()
end
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