Current File : //proc/self/root/data/old/usr/share/texlive/texmf-dist/tex/luatex/luaotfload/otfl-font-otf.lua
if not modules then modules = { } end modules ['font-otf'] = {
version = 1.001,
comment = "companion to font-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local utf = unicode.utf8
local concat, utfbyte = table.concat, utf.byte
local format, gmatch, gsub, find, match, lower, strip = string.format, string.gmatch, string.gsub, string.find, string.match, string.lower, string.strip
local type, next, tonumber, tostring = type, next, tonumber, tostring
local abs = math.abs
local getn = table.getn
local lpegmatch = lpeg.match
local trace_private = false trackers.register("otf.private", function(v) trace_private = v end)
local trace_loading = false trackers.register("otf.loading", function(v) trace_loading = v end)
local trace_features = false trackers.register("otf.features", function(v) trace_features = v end)
local trace_dynamics = false trackers.register("otf.dynamics", function(v) trace_dynamics = v end)
local trace_sequences = false trackers.register("otf.sequences", function(v) trace_sequences = v end)
local trace_math = false trackers.register("otf.math", function(v) trace_math = v end)
local trace_defining = false trackers.register("fonts.defining", function(v) trace_defining = v end)
--~ trackers.enable("otf.loading")
--[[ldx--
<p>The fontforge table has organized lookups in a certain way. A first implementation
of this code was organized featurewise: information related to features was
collected and processing boiled down to a run over the features. The current
implementation honors the order in the main feature table. Since we can reorder this
table as we want, we can eventually support several models of processing. We kept
the static as well as dynamic feature processing, because it had proved to be
rather useful. The formerly three loop variants have beem discarded but will
reapear at some time.</p>
<itemize>
<item>we loop over all lookups</item>
<item>for each lookup we do a run over the list of glyphs</item>
<item>but we only process them for features that are enabled</item>
<item>if we're dealing with a contextual lookup, we loop over all contexts</item>
<item>in that loop we quit at a match and then process the list of sublookups</item>
<item>we always continue after the match</item>
</itemize>
<p>In <l n='context'/> we do this for each font that is used in a list, so in
practice we have quite some nested loops.</p>
<p>We process the whole list and then consult the glyph nodes. An alternative approach
is to collect strings of characters using the same font including spaces (because some
lookups involve spaces). However, we then need to reconstruct the list which is no fun.
Also, we need to carry quite some information, like attributes, so eventually we don't
gain much (if we gain something at all).</p>
<p>Another consideration has been to operate on sublists (subhead, subtail) but again
this would complicate matters as we then neext to keep track of a changing subhead
and subtail. On the other hand, this might save some runtime. The number of changes
involved is not that large. This only makes sense when we have many fonts in a list
and don't change to frequently.</p>
--ldx]]--
fonts = fonts or { }
fonts.otf = fonts.otf or { }
fonts.tfm = fonts.tfm or { }
local otf = fonts.otf
local tfm = fonts.tfm
local fontdata = fonts.ids
otf.tables = otf.tables or { } -- defined in font-ott.lua
otf.meanings = otf.meanings or { } -- defined in font-ott.lua
otf.tables.features = otf.tables.features or { } -- defined in font-ott.lua
otf.tables.languages = otf.tables.languages or { } -- defined in font-ott.lua
otf.tables.scripts = otf.tables.scripts or { } -- defined in font-ott.lua
otf.features = otf.features or { }
otf.features.list = otf.features.list or { }
otf.features.default = otf.features.default or { }
otf.enhancers = otf.enhancers or { }
otf.glists = { "gsub", "gpos" }
otf.version = 2.653 -- beware: also sync font-mis.lua
otf.pack = true -- beware: also sync font-mis.lua
otf.syncspace = true
otf.notdef = false
otf.cache = containers.define("fonts", "otf", otf.version, true)
otf.cleanup_aat = false -- only context
local wildcard = "*"
local default = "dflt"
--[[ldx--
<p>We start with a lot of tables and related functions.</p>
--ldx]]--
otf.tables.global_fields = table.tohash {
"lookups",
"glyphs",
"subfonts",
"luatex",
"pfminfo",
"cidinfo",
"tables",
"names",
"unicodes",
"names",
--~ "math",
"anchor_classes",
"kern_classes",
"gpos",
"gsub"
}
otf.tables.valid_fields = {
"anchor_classes",
"ascent",
"cache_version",
"cidinfo",
"copyright",
"creationtime",
"descent",
"design_range_bottom",
"design_range_top",
"design_size",
"encodingchanged",
"extrema_bound",
"familyname",
"fontname",
"fontstyle_id",
"fontstyle_name",
"fullname",
"glyphs",
"hasvmetrics",
"head_optimized_for_cleartype",
"horiz_base",
"issans",
"isserif",
"italicangle",
"kerns",
"lookups",
-- "luatex",
"macstyle",
"modificationtime",
"onlybitmaps",
"origname",
"os2_version",
"pfminfo",
"private",
"serifcheck",
"sfd_version",
-- "size",
"strokedfont",
"strokewidth",
"subfonts",
"table_version",
-- "tables",
-- "ttf_tab_saved",
"ttf_tables",
"uni_interp",
"uniqueid",
"units_per_em",
"upos",
"use_typo_metrics",
"uwidth",
"validation_state",
"verbose",
"version",
"vert_base",
"weight",
"weight_width_slope_only",
"xuid",
}
--[[ldx--
<p>Here we go.</p>
--ldx]]--
local function load_featurefile(ff,featurefile)
if featurefile then
featurefile = resolvers.find_file(file.addsuffix(featurefile,'fea'),'fea')
if featurefile and featurefile ~= "" then
if trace_loading then
logs.report("load otf", "featurefile: %s", featurefile)
end
fontloader.apply_featurefile(ff, featurefile)
end
end
end
function otf.enhance(name,data,filename,verbose)
local enhancer = otf.enhancers[name]
if enhancer then
if (verbose ~= nil and verbose) or trace_loading then
logs.report("load otf","enhance: %s (%s)",name,filename)
end
enhancer(data,filename)
end
end
local enhancers = {
-- pack and unpack are handled separately; they might even be moved
-- away from the enhancers namespace
"patch bugs",
"merge cid fonts", "prepare unicode", "cleanup ttf tables", "compact glyphs", "reverse coverage",
"cleanup aat", "enrich with features", "add some missing characters",
"reorganize mark classes",
"reorganize kerns", -- moved here
"flatten glyph lookups", "flatten anchor tables", "flatten feature tables",
"simplify glyph lookups", -- some saving
"prepare luatex tables",
"analyse features", "rehash features",
"analyse anchors", "analyse marks", "analyse unicodes", "analyse subtables",
"check italic correction","check math",
"share widths",
"strip not needed data",
"migrate metadata",
"check math parameters",
}
function otf.load(filename,format,sub,featurefile)
local name = file.basename(file.removesuffix(filename))
local attr = lfs.attributes(filename)
local size, time = attr.size or 0, attr.modification or 0
if featurefile then
local fattr = lfs.attributes(featurefile)
local fsize, ftime = fattr and fattr.size or 0, fattr and fattr.modification or 0
name = name .. "@" .. file.removesuffix(file.basename(featurefile)) .. ftime .. fsize
end
if sub == "" then sub = false end
local hash = name
if sub then
hash = hash .. "-" .. sub
end
hash = containers.cleanname(hash)
local data = containers.read(otf.cache,hash)
if not data or data.verbose ~= fonts.verbose or data.size ~= size or data.time ~= time then
logs.report("load otf","loading: %s (hash: %s)",filename,hash)
local ff, messages
if sub then
ff, messages = fontloader.open(filename,sub)
else
ff, messages = fontloader.open(filename)
end
if trace_loading and messages and #messages > 0 then
if type(messages) == "string" then
logs.report("load otf","warning: %s",messages)
else
for m=1,#messages do
logs.report("load otf","warning: %s",tostring(messages[m]))
end
end
else
logs.report("load otf","font loaded okay")
end
if ff then
load_featurefile(ff,featurefile)
data = fontloader.to_table(ff)
fontloader.close(ff)
if data then
logs.report("load otf","file size: %s", size)
logs.report("load otf","enhancing ...")
for e=1,#enhancers do
otf.enhance(enhancers[e],data,filename)
io.flush() -- we want instant messages
end
if otf.pack and not fonts.verbose then
otf.enhance("pack",data,filename)
end
data.size = size
data.time = time
data.verbose = fonts.verbose
logs.report("load otf","saving in cache: %s",filename)
data = containers.write(otf.cache, hash, data)
collectgarbage("collect")
data = containers.read(otf.cache, hash) -- this frees the old table and load the sparse one
collectgarbage("collect")
else
logs.report("load otf","loading failed (table conversion error)")
end
else
logs.report("load otf","loading failed (file read error)")
end
end
if data then
if trace_defining then
logs.report("define font","loading from cache: %s",hash)
end
otf.enhance("unpack",data,filename,false) -- no message here
otf.add_dimensions(data)
if trace_sequences then
otf.show_feature_order(data,filename)
end
end
return data
end
function otf.add_dimensions(data)
-- todo: forget about the width if it's the defaultwidth (saves mem)
-- we could also build the marks hash here (instead of storing it)
if data then
local force = otf.notdef
local luatex = data.luatex
local defaultwidth = luatex.defaultwidth or 0
local defaultheight = luatex.defaultheight or 0
local defaultdepth = luatex.defaultdepth or 0
for _, d in next, data.glyphs do
local bb, wd = d.boundingbox, d.width
if not wd then
d.width = defaultwidth
elseif wd ~= 0 and d.class == "mark" then
d.width = -wd
end
if force and not d.name then
d.name = ".notdef"
end
if bb then
local ht, dp = bb[4], -bb[2]
if ht == 0 or ht < 0 then
-- no need to set it and no negative heights, nil == 0
else
d.height = ht
end
if dp == 0 or dp < 0 then
-- no negative depths and no negative depths, nil == 0
else
d.depth = dp
end
end
end
end
end
function otf.show_feature_order(otfdata,filename)
local sequences = otfdata.luatex.sequences
if sequences and #sequences > 0 then
if trace_loading then
logs.report("otf check","font %s has %s sequences",filename,#sequences)
logs.report("otf check"," ")
end
for nos=1,#sequences do
local sequence = sequences[nos]
local typ = sequence.type or "no-type"
local name = sequence.name or "no-name"
local subtables = sequence.subtables or { "no-subtables" }
local features = sequence.features
if trace_loading then
logs.report("otf check","%3i %-15s %-20s [%s]",nos,name,typ,concat(subtables,","))
end
if features then
for feature, scripts in next, features do
local tt = { }
for script, languages in next, scripts do
local ttt = { }
for language, _ in next, languages do
ttt[#ttt+1] = language
end
tt[#tt+1] = format("[%s: %s]",script,concat(ttt," "))
end
if trace_loading then
logs.report("otf check"," %s: %s",feature,concat(tt," "))
end
end
end
end
if trace_loading then
logs.report("otf check","\n")
end
elseif trace_loading then
logs.report("otf check","font %s has no sequences",filename)
end
end
-- todo: normalize, design_size => designsize
otf.enhancers["reorganize mark classes"] = function(data,filename)
if data.mark_classes then
local unicodes = data.luatex.unicodes
local reverse = { }
for name, class in next, data.mark_classes do
local t = { }
for s in gmatch(class,"[^ ]+") do
local us = unicodes[s]
if type(us) == "table" then
for u=1,#us do
t[us[u]] = true
end
else
t[us] = true
end
end
reverse[name] = t
end
data.luatex.markclasses = reverse
data.mark_classes = nil
end
end
otf.enhancers["prepare luatex tables"] = function(data,filename)
data.luatex = data.luatex or { }
local luatex = data.luatex
luatex.filename = filename
luatex.version = otf.version
luatex.creator = "context mkiv"
end
otf.enhancers["cleanup aat"] = function(data,filename)
if otf.cleanup_aat then
end
end
local function analyze_features(g, features)
if g then
local t, done = { }, { }
for k=1,#g do
local f = features or g[k].features
if f then
for k=1,#f do
-- scripts and tag
local tag = f[k].tag
if not done[tag] then
t[#t+1] = tag
done[tag] = true
end
end
end
end
if #t > 0 then
return t
end
end
return nil
end
otf.enhancers["analyse features"] = function(data,filename)
-- local luatex = data.luatex
-- luatex.gposfeatures = analyze_features(data.gpos)
-- luatex.gsubfeatures = analyze_features(data.gsub)
end
otf.enhancers["rehash features"] = function(data,filename)
local features = { }
data.luatex.features = features
for k, what in next, otf.glists do
local dw = data[what]
if dw then
local f = { }
features[what] = f
for i=1,#dw do
local d= dw[i]
local dfeatures = d.features
if dfeatures then
for i=1,#dfeatures do
local df = dfeatures[i]
local tag = strip(lower(df.tag))
local ft = f[tag] if not ft then ft = {} f[tag] = ft end
local dscripts = df.scripts
for script, languages in next, dscripts do
script = strip(lower(script))
local fts = ft[script] if not fts then fts = {} ft[script] = fts end
for i=1,#languages do
fts[strip(lower(languages[i]))] = true
end
end
end
end
end
end
end
end
otf.enhancers["analyse anchors"] = function(data,filename)
local classes = data.anchor_classes
local luatex = data.luatex
local anchor_to_lookup, lookup_to_anchor = { }, { }
luatex.anchor_to_lookup, luatex.lookup_to_anchor = anchor_to_lookup, lookup_to_anchor
if classes then
for c=1,#classes do
local class = classes[c]
local anchor = class.name
local lookups = class.lookup
if type(lookups) ~= "table" then
lookups = { lookups }
end
local a = anchor_to_lookup[anchor]
if not a then a = { } anchor_to_lookup[anchor] = a end
for l=1,#lookups do
local lookup = lookups[l]
local l = lookup_to_anchor[lookup]
if not l then l = { } lookup_to_anchor[lookup] = l end
l[anchor] = true
a[lookup] = true
end
end
end
end
otf.enhancers["analyse marks"] = function(data,filename)
local glyphs = data.glyphs
local marks = { }
data.luatex.marks = marks
for unicode, index in next, data.luatex.indices do
local glyph = glyphs[index]
if glyph.class == "mark" then
marks[unicode] = true
end
end
end
otf.enhancers["analyse unicodes"] = fonts.map.add_to_unicode
otf.enhancers["analyse subtables"] = function(data,filename)
data.luatex = data.luatex or { }
local luatex = data.luatex
local sequences = { }
local lookups = { }
luatex.sequences = sequences
luatex.lookups = lookups
for _, g in next, { data.gsub, data.gpos } do
for k=1,#g do
local gk = g[k]
local typ = gk.type
if typ == "gsub_contextchain" or typ == "gpos_contextchain" then
gk.chain = 1
elseif typ == "gsub_reversecontextchain" or typ == "gpos_reversecontextchain" then
gk.chain = -1
else
gk.chain = 0
end
local features = gk.features
if features then
sequences[#sequences+1] = gk
-- scripts, tag, ismac
local t = { }
for f=1,#features do
local feature = features[f]
local hash = { }
-- only script and langs matter
for s, languages in next, feature.scripts do
s = lower(s)
local h = hash[s]
if not h then h = { } hash[s] = h end
for l=1,#languages do
h[strip(lower(languages[l]))] = true
end
end
t[feature.tag] = hash
end
gk.features = t
else
lookups[gk.name] = gk
gk.name = nil
end
local subtables = gk.subtables
if subtables then
local t = { }
for s=1,#subtables do
local subtable = subtables[s]
local name = subtable.name
t[#t+1] = name
end
gk.subtables = t
end
local flags = gk.flags
if flags then
gk.flags = { -- forcing false packs nicer
(flags.ignorecombiningmarks and "mark") or false,
(flags.ignoreligatures and "ligature") or false,
(flags.ignorebaseglyphs and "base") or false,
flags.r2l or false,
}
if flags.mark_class then
gk.markclass = luatex.markclasses[flags.mark_class]
end
end
end
end
end
otf.enhancers["merge cid fonts"] = function(data,filename)
-- we can also move the names to data.luatex.names which might
-- save us some more memory (at the cost of harder tracing)
if data.subfonts then
if data.glyphs and next(data.glyphs) then
logs.report("load otf","replacing existing glyph table due to subfonts")
end
local cidinfo = data.cidinfo
local verbose = fonts.verbose
if cidinfo.registry then
local cidmap, cidname = fonts.cid.getmap(cidinfo.registry,cidinfo.ordering,cidinfo.supplement)
if cidmap then
cidinfo.usedname = cidmap.usedname
local glyphs, uni_to_int, int_to_uni, nofnames, nofunicodes = { }, { }, { }, 0, 0
local unicodes, names = cidmap.unicodes, cidmap.names
for n, subfont in next, data.subfonts do
for index, g in next, subfont.glyphs do
if not next(g) then
-- dummy entry
else
local unicode, name = unicodes[index], names[index]
g.cidindex = n
g.boundingbox = g.boundingbox -- or zerobox
g.name = g.name or name or "unknown"
if unicode then
uni_to_int[unicode] = index
int_to_uni[index] = unicode
nofunicodes = nofunicodes + 1
g.unicode = unicode
elseif name then
nofnames = nofnames + 1
g.unicode = -1
end
glyphs[index] = g
end
end
subfont.glyphs = nil
end
if trace_loading then
logs.report("load otf","cid font remapped, %s unicode points, %s symbolic names, %s glyphs",nofunicodes, nofnames, nofunicodes+nofnames)
end
data.glyphs = glyphs
data.map = data.map or { }
data.map.map = uni_to_int
data.map.backmap = int_to_uni
elseif trace_loading then
logs.report("load otf","unable to remap cid font, missing cid file for %s",filename)
end
elseif trace_loading then
logs.report("load otf","font %s has no glyphs",filename)
end
end
end
otf.enhancers["prepare unicode"] = function(data,filename)
local luatex = data.luatex
if not luatex then luatex = { } data.luatex = luatex end
local indices, unicodes, multiples, internals = { }, { }, { }, { }
local glyphs = data.glyphs
local mapmap = data.map
if not mapmap then
logs.report("load otf","no map in %s",filename)
mapmap = { }
data.map = { map = mapmap }
elseif not mapmap.map then
logs.report("load otf","no unicode map in %s",filename)
mapmap = { }
data.map.map = mapmap
else
mapmap = mapmap.map
end
local criterium = fonts.private
local private = fonts.private
for index, glyph in next, glyphs do
if index > 0 then
local name = glyph.name
if name then
local unicode = glyph.unicode
if unicode == -1 or unicode >= criterium then
glyph.unicode = private
indices[private] = index
unicodes[name] = private
internals[index] = true
if trace_private then
logs.report("load otf","enhance: glyph %s at index U+%04X is moved to private unicode slot U+%04X",name,index,private)
end
private = private + 1
else
indices[unicode] = index
unicodes[name] = unicode
end
end
end
end
-- beware: the indices table is used to initialize the tfm table
for unicode, index in next, mapmap do
if not internals[index] then
local name = glyphs[index].name
if name then
local un = unicodes[name]
if not un then
unicodes[name] = unicode -- or 0
elseif type(un) == "number" then
if un ~= unicode then
multiples[#multiples+1] = name
unicodes[name] = { un, unicode }
indices[unicode] = index
end
else
local ok = false
for u=1,#un do
if un[u] == unicode then
ok = true
break
end
end
if not ok then
multiples[#multiples+1] = name
un[#un+1] = unicode
indices[unicode] = index
end
end
end
end
end
if trace_loading then
if #multiples > 0 then
logs.report("load otf","%s glyph are reused: %s",#multiples, concat(multiples," "))
else
logs.report("load otf","no glyph are reused")
end
end
luatex.indices = indices
luatex.unicodes = unicodes
luatex.private = private
end
otf.enhancers["cleanup ttf tables"] = function(data,filename)
local ttf_tables = data.ttf_tables
if ttf_tables then
for k=1,#ttf_tables do
if ttf_tables[k].data then ttf_tables[k].data = "deleted" end
end
end
data.ttf_tab_saved = nil
end
otf.enhancers["compact glyphs"] = function(data,filename)
table.compact(data.glyphs) -- needed?
if data.subfonts then
for _, subfont in next, data.subfonts do
table.compact(subfont.glyphs) -- needed?
end
end
end
otf.enhancers["reverse coverage"] = function(data,filename)
-- we prefer the before lookups in a normal order
if data.lookups then
for _, v in next, data.lookups do
if v.rules then
for _, vv in next, v.rules do
local c = vv.coverage
if c and c.before then
c.before = table.reverse(c.before)
end
end
end
end
end
end
otf.enhancers["check italic correction"] = function(data,filename)
local glyphs = data.glyphs
local ok = false
for index, glyph in next, glyphs do
local ic = glyph.italic_correction
if ic then
if ic ~= 0 then
glyph.italic = ic
end
glyph.italic_correction = nil
ok = true
end
end
-- we can use this to avoid calculations
otf.tables.valid_fields[#otf.tables.valid_fields+1] = "has_italic"
data.has_italic = true
end
otf.enhancers["check math"] = function(data,filename)
if data.math then
-- we move the math stuff into a math subtable because we then can
-- test faster in the tfm copy
local glyphs = data.glyphs
local unicodes = data.luatex.unicodes
for index, glyph in next, glyphs do
local mk = glyph.mathkern
local hv = glyph.horiz_variants
local vv = glyph.vert_variants
if mk or hv or vv then
local math = { }
glyph.math = math
if mk then
for k, v in next, mk do
if not next(v) then
mk[k] = nil
end
end
math.kerns = mk
glyph.mathkern = nil
end
if hv then
math.horiz_variants = hv.variants
local p = hv.parts
if p and #p > 0 then
for i=1,#p do
local pi = p[i]
pi.glyph = unicodes[pi.component] or 0
end
math.horiz_parts = p
end
local ic = hv.italic_correction
if ic and ic ~= 0 then
math.horiz_italic_correction = ic
end
glyph.horiz_variants = nil
end
if vv then
local uc = unicodes[index]
math.vert_variants = vv.variants
local p = vv.parts
if p and #p > 0 then
for i=1,#p do
local pi = p[i]
pi.glyph = unicodes[pi.component] or 0
end
math.vert_parts = p
end
local ic = vv.italic_correction
if ic and ic ~= 0 then
math.vert_italic_correction = ic
end
glyph.vert_variants = nil
end
local ic = glyph.italic_correction
if ic then
if ic ~= 0 then
math.italic_correction = ic
end
glyph.italic_correction = nil
end
end
end
end
end
otf.enhancers["share widths"] = function(data,filename)
local glyphs = data.glyphs
local widths = { }
for index, glyph in next, glyphs do
local width = glyph.width
widths[width] = (widths[width] or 0) + 1
end
-- share width for cjk fonts
local wd, most = 0, 1
for k,v in next, widths do
if v > most then
wd, most = k, v
end
end
if most > 1000 then
if trace_loading then
logs.report("load otf", "most common width: %s (%s times), sharing (cjk font)",wd,most)
end
for k, v in next, glyphs do
if v.width == wd then
v.width = nil
end
end
data.luatex.defaultwidth = wd
end
end
-- kern: ttf has a table with kerns
-- Weird, as maxfirst and maxseconds can have holes, first seems to be indexed, but
-- seconds can start at 2 .. this need to be fixed as getn as well as # are sort of
-- unpredictable alternatively we could force an [1] if not set (maybe I will do that
-- anyway).
--~ otf.enhancers["reorganize kerns"] = function(data,filename)
--~ local glyphs, mapmap, unicodes = data.glyphs, data.luatex.indices, data.luatex.unicodes
--~ local mkdone = false
--~ for index, glyph in next, glyphs do
--~ if glyph.kerns then
--~ local mykerns = { }
--~ for k,v in next, glyph.kerns do
--~ local vc, vo, vl = v.char, v.off, v.lookup
--~ if vc and vo and vl then -- brrr, wrong! we miss the non unicode ones
--~ local uvc = unicodes[vc]
--~ if not uvc then
--~ if trace_loading then
--~ logs.report("load otf","problems with unicode %s of kern %s at glyph %s",vc,k,index)
--~ end
--~ else
--~ if type(vl) ~= "table" then
--~ vl = { vl }
--~ end
--~ for l=1,#vl do
--~ local vll = vl[l]
--~ local mkl = mykerns[vll]
--~ if not mkl then
--~ mkl = { }
--~ mykerns[vll] = mkl
--~ end
--~ if type(uvc) == "table" then
--~ for u=1,#uvc do
--~ mkl[uvc[u]] = vo
--~ end
--~ else
--~ mkl[uvc] = vo
--~ end
--~ end
--~ end
--~ end
--~ end
--~ glyph.mykerns = mykerns
--~ glyph.kerns = nil -- saves space and time
--~ mkdone = true
--~ end
--~ end
--~ if trace_loading and mkdone then
--~ logs.report("load otf", "replacing 'kerns' tables by 'mykerns' tables")
--~ end
--~ if data.kerns then
--~ if trace_loading then
--~ logs.report("load otf", "removing global 'kern' table")
--~ end
--~ data.kerns = nil
--~ end
--~ local dgpos = data.gpos
--~ if dgpos then
--~ local separator = lpeg.P(" ")
--~ local other = ((1 - separator)^0) / unicodes
--~ local splitter = lpeg.Ct(other * (separator * other)^0)
--~ for gp=1,#dgpos do
--~ local gpos = dgpos[gp]
--~ local subtables = gpos.subtables
--~ if subtables then
--~ for s=1,#subtables do
--~ local subtable = subtables[s]
--~ local kernclass = subtable.kernclass -- name is inconsistent with anchor_classes
--~ if kernclass then -- the next one is quite slow
--~ local split = { } -- saves time
--~ for k=1,#kernclass do
--~ local kcl = kernclass[k]
--~ local firsts, seconds, offsets, lookups = kcl.firsts, kcl.seconds, kcl.offsets, kcl.lookup -- singular
--~ if type(lookups) ~= "table" then
--~ lookups = { lookups }
--~ end
--~ local maxfirsts, maxseconds = getn(firsts), getn(seconds)
--~ for _, s in next, firsts do
--~ split[s] = split[s] or lpegmatch(splitter,s)
--~ end
--~ for _, s in next, seconds do
--~ split[s] = split[s] or lpegmatch(splitter,s)
--~ end
--~ for l=1,#lookups do
--~ local lookup = lookups[l]
--~ local function do_it(fk,first_unicode)
--~ local glyph = glyphs[mapmap[first_unicode]]
--~ if glyph then
--~ local mykerns = glyph.mykerns
--~ if not mykerns then
--~ mykerns = { } -- unicode indexed !
--~ glyph.mykerns = mykerns
--~ end
--~ local lookupkerns = mykerns[lookup]
--~ if not lookupkerns then
--~ lookupkerns = { }
--~ mykerns[lookup] = lookupkerns
--~ end
--~ local baseoffset = (fk-1) * maxseconds
--~ for sk=2,maxseconds do -- we can avoid this loop with a table
--~ local sv = seconds[sk]
--~ local splt = split[sv]
--~ if splt then
--~ local offset = offsets[baseoffset + sk]
--~ --~ local offset = offsets[sk] -- (fk-1) * maxseconds + sk]
--~ if offset then
--~ for i=1,#splt do
--~ local second_unicode = splt[i]
--~ if tonumber(second_unicode) then
--~ lookupkerns[second_unicode] = offset
--~ else for s=1,#second_unicode do
--~ lookupkerns[second_unicode[s]] = offset
--~ end end
--~ end
--~ end
--~ end
--~ end
--~ elseif trace_loading then
--~ logs.report("load otf", "no glyph data for U+%04X", first_unicode)
--~ end
--~ end
--~ for fk=1,#firsts do
--~ local fv = firsts[fk]
--~ local splt = split[fv]
--~ if splt then
--~ for i=1,#splt do
--~ local first_unicode = splt[i]
--~ if tonumber(first_unicode) then
--~ do_it(fk,first_unicode)
--~ else for f=1,#first_unicode do
--~ do_it(fk,first_unicode[f])
--~ end end
--~ end
--~ end
--~ end
--~ end
--~ end
--~ subtable.comment = "The kernclass table is merged into mykerns in the indexed glyph tables."
--~ subtable.kernclass = { }
--~ end
--~ end
--~ end
--~ end
--~ end
--~ end
otf.enhancers["reorganize kerns"] = function(data,filename)
local glyphs, mapmap, unicodes = data.glyphs, data.luatex.indices, data.luatex.unicodes
local mkdone = false
local function do_it(lookup,first_unicode,kerns)
local glyph = glyphs[mapmap[first_unicode]]
if glyph then
local mykerns = glyph.mykerns
if not mykerns then
mykerns = { } -- unicode indexed !
glyph.mykerns = mykerns
end
local lookupkerns = mykerns[lookup]
if not lookupkerns then
lookupkerns = { }
mykerns[lookup] = lookupkerns
end
for second_unicode, kern in next, kerns do
lookupkerns[second_unicode] = kern
end
elseif trace_loading then
logs.report("load otf", "no glyph data for U+%04X", first_unicode)
end
end
for index, glyph in next, glyphs do
if glyph.kerns then
local mykerns = { }
for k,v in next, glyph.kerns do
local vc, vo, vl = v.char, v.off, v.lookup
if vc and vo and vl then -- brrr, wrong! we miss the non unicode ones
local uvc = unicodes[vc]
if not uvc then
if trace_loading then
logs.report("load otf","problems with unicode %s of kern %s at glyph %s",vc,k,index)
end
else
if type(vl) ~= "table" then
vl = { vl }
end
for l=1,#vl do
local vll = vl[l]
local mkl = mykerns[vll]
if not mkl then
mkl = { }
mykerns[vll] = mkl
end
if type(uvc) == "table" then
for u=1,#uvc do
mkl[uvc[u]] = vo
end
else
mkl[uvc] = vo
end
end
end
end
end
glyph.mykerns = mykerns
glyph.kerns = nil -- saves space and time
mkdone = true
end
end
if trace_loading and mkdone then
logs.report("load otf", "replacing 'kerns' tables by 'mykerns' tables")
end
if data.kerns then
if trace_loading then
logs.report("load otf", "removing global 'kern' table")
end
data.kerns = nil
end
local dgpos = data.gpos
if dgpos then
local separator = lpeg.P(" ")
local other = ((1 - separator)^0) / unicodes
local splitter = lpeg.Ct(other * (separator * other)^0)
for gp=1,#dgpos do
local gpos = dgpos[gp]
local subtables = gpos.subtables
if subtables then
for s=1,#subtables do
local subtable = subtables[s]
local kernclass = subtable.kernclass -- name is inconsistent with anchor_classes
if kernclass then -- the next one is quite slow
local split = { } -- saves time
for k=1,#kernclass do
local kcl = kernclass[k]
local firsts, seconds, offsets, lookups = kcl.firsts, kcl.seconds, kcl.offsets, kcl.lookup -- singular
if type(lookups) ~= "table" then
lookups = { lookups }
end
local maxfirsts, maxseconds = getn(firsts), getn(seconds)
-- here we could convert split into a list of unicodes which is a bit
-- faster but as this is only done when caching it does not save us much
for _, s in next, firsts do
split[s] = split[s] or lpegmatch(splitter,s)
end
for _, s in next, seconds do
split[s] = split[s] or lpegmatch(splitter,s)
end
for l=1,#lookups do
local lookup = lookups[l]
for fk=1,#firsts do
local fv = firsts[fk]
local splt = split[fv]
if splt then
local kerns, baseoffset = { }, (fk-1) * maxseconds
for sk=2,maxseconds do
local sv = seconds[sk]
local splt = split[sv]
if splt then
local offset = offsets[baseoffset + sk]
if offset then
for i=1,#splt do
local second_unicode = splt[i]
if tonumber(second_unicode) then
kerns[second_unicode] = offset
else for s=1,#second_unicode do
kerns[second_unicode[s]] = offset
end end
end
end
end
end
for i=1,#splt do
local first_unicode = splt[i]
if tonumber(first_unicode) then
do_it(lookup,first_unicode,kerns)
else for f=1,#first_unicode do
do_it(lookup,first_unicode[f],kerns)
end end
end
end
end
end
end
subtable.comment = "The kernclass table is merged into mykerns in the indexed glyph tables."
subtable.kernclass = { }
end
end
end
end
end
end
otf.enhancers["strip not needed data"] = function(data,filename)
local verbose = fonts.verbose
local int_to_uni = data.luatex.unicodes
for k, v in next, data.glyphs do
local d = v.dependents
if d then v.dependents = nil end
local a = v.altuni
if a then v.altuni = nil end
if verbose then
local code = int_to_uni[k]
-- looks like this is done twice ... bug?
if code then
local vu = v.unicode
if not vu then
v.unicode = code
elseif type(vu) == "table" then
if vu[#vu] == code then
-- weird
else
vu[#vu+1] = code
end
elseif vu ~= code then
v.unicode = { vu, code }
end
end
else
v.unicode = nil
v.index = nil
end
end
data.luatex.comment = "Glyph tables have their original index. When present, mykern tables are indexed by unicode."
data.map = nil
data.names = nil -- funny names for editors
data.glyphcnt = nil
data.glyphmax = nil
if true then
data.gpos = nil
data.gsub = nil
data.anchor_classes = nil
end
end
otf.enhancers["migrate metadata"] = function(data,filename)
local global_fields = otf.tables.global_fields
local metadata = { }
for k,v in next, data do
if not global_fields[k] then
metadata[k] = v
data[k] = nil
end
end
data.metadata = metadata
-- goodies
local pfminfo = data.pfminfo
metadata.isfixedpitch = metadata.isfixedpitch or (pfminfo.panose and pfminfo.panose["proportion"] == "Monospaced")
metadata.charwidth = pfminfo and pfminfo.avgwidth
end
local private_math_parameters = {
"FractionDelimiterSize",
"FractionDelimiterDisplayStyleSize",
}
otf.enhancers["check math parameters"] = function(data,filename)
local mathdata = data.metadata.math
if mathdata then
for m=1,#private_math_parameters do
local pmp = private_math_parameters[m]
if not mathdata[pmp] then
if trace_loading then
logs.report("load otf", "setting math parameter '%s' to 0", pmp)
end
mathdata[pmp] = 0
end
end
end
end
otf.enhancers["flatten glyph lookups"] = function(data,filename)
for k, v in next, data.glyphs do
local lookups = v.lookups
if lookups then
for kk, vv in next, lookups do
for kkk=1,#vv do
local vvv = vv[kkk]
local s = vvv.specification
if s then
local t = vvv.type
if t == "ligature" then
vv[kkk] = { "ligature", s.components, s.char }
elseif t == "alternate" then
vv[kkk] = { "alternate", s.components }
elseif t == "substitution" then
vv[kkk] = { "substitution", s.variant }
elseif t == "multiple" then
vv[kkk] = { "multiple", s.components }
elseif t == "position" then
vv[kkk] = { "position", { s.x or 0, s.y or 0, s.h or 0, s.v or 0 } }
elseif t == "pair" then
local one, two, paired = s.offsets[1], s.offsets[2], s.paired or ""
if one then
if two then
vv[kkk] = { "pair", paired, { one.x or 0, one.y or 0, one.h or 0, one.v or 0 }, { two.x or 0, two.y or 0, two.h or 0, two.v or 0 } }
else
vv[kkk] = { "pair", paired, { one.x or 0, one.y or 0, one.h or 0, one.v or 0 } }
end
else
if two then
vv[kkk] = { "pair", paired, { }, { two.x or 0, two.y or 0, two.h or 0, two.v or 0} } -- maybe nil instead of { }
else
vv[kkk] = { "pair", paired }
end
end
else
if trace_loading then
logs.report("load otf", "flattening needed, report to context list")
end
for a, b in next, s do
if trace_loading and vvv[a] then
logs.report("load otf", "flattening conflict, report to context list")
end
vvv[a] = b
end
vvv.specification = nil
end
end
end
end
end
end
end
otf.enhancers["simplify glyph lookups"] = function(data,filename)
for k, v in next, data.glyphs do
local lookups = v.lookups
if lookups then
local slookups, mlookups
for kk, vv in next, lookups do
if #vv == 1 then
if not slookups then
slookups = { }
v.slookups = slookups
end
slookups[kk] = vv[1]
else
if not mlookups then
mlookups = { }
v.mlookups = mlookups
end
mlookups[kk] = vv
end
end
v.lookups = nil
end
end
end
otf.enhancers["flatten anchor tables"] = function(data,filename)
for k, v in next, data.glyphs do
if v.anchors then
for kk, vv in next, v.anchors do
for kkk, vvv in next, vv do
if vvv.x or vvv.y then
vv[kkk] = { vvv.x or 0, vvv.y or 0 }
else
for kkkk=1,#vvv do
local vvvv = vvv[kkkk]
vvv[kkkk] = { vvvv.x or 0, vvvv.y or 0 }
end
end
end
end
end
end
end
otf.enhancers["flatten feature tables"] = function(data,filename)
-- is this needed? do we still use them at all?
for _, tag in next, otf.glists do
if data[tag] then
if trace_loading then
logs.report("load otf", "flattening %s table", tag)
end
for k, v in next, data[tag] do
local features = v.features
if features then
for kk=1,#features do
local vv = features[kk]
local t = { }
local scripts = vv.scripts
for kkk=1,#scripts do
local vvv = scripts[kkk]
t[vvv.script] = vvv.langs
end
vv.scripts = t
end
end
end
end
end
end
otf.enhancers.patches = otf.enhancers.patches or { }
otf.enhancers["patch bugs"] = function(data,filename)
local basename = file.basename(lower(filename))
for pattern, action in next, otf.enhancers.patches do
if find(basename,pattern) then
action(data,filename)
end
end
end
-- tex features
fonts.otf.enhancers["enrich with features"] = function(data,filename)
-- later, ctx only
end
function otf.features.register(name,default)
otf.features.list[#otf.features.list+1] = name
otf.features.default[name] = default
end
-- for context this will become a task handler
function otf.set_features(tfmdata,features)
local processes = { }
if features and next(features) then
local lists = { -- why local
fonts.triggers,
fonts.processors,
fonts.manipulators,
}
local mode = tfmdata.mode or fonts.mode -- or features.mode
local initializers = fonts.initializers
local fi = initializers[mode]
if fi then
local fiotf = fi.otf
if fiotf then
local done = { }
for l=1,4 do
local list = lists[l]
if list then
for i=1,#list do
local f = list[i]
local value = features[f]
if value and fiotf[f] then -- brr
if not done[f] then -- so, we can move some to triggers
if trace_features then
logs.report("define otf","initializing feature %s to %s for mode %s for font %s",f,tostring(value),mode or 'unknown', tfmdata.fullname or 'unknown')
end
fiotf[f](tfmdata,value) -- can set mode (no need to pass otf)
mode = tfmdata.mode or fonts.mode -- keep this, mode can be set local !
local im = initializers[mode]
if im then
fiotf = initializers[mode].otf
end
done[f] = true
end
end
end
end
end
end
end
local fm = fonts.methods[mode] -- todo: zonder node/mode otf/...
if fm then
local fmotf = fm.otf
if fmotf then
for l=1,4 do
local list = lists[l]
if list then
for i=1,#list do
local f = list[i]
if fmotf[f] then -- brr
if trace_features then
logs.report("define otf","installing feature handler %s for mode %s for font %s",f,mode or 'unknown', tfmdata.fullname or 'unknown')
end
processes[#processes+1] = fmotf[f]
end
end
end
end
end
else
-- message
end
end
return processes, features
end
function otf.otf_to_tfm(specification)
local name = specification.name
local sub = specification.sub
local filename = specification.filename
local format = specification.format
local features = specification.features.normal
local cache_id = specification.hash
local tfmdata = containers.read(tfm.cache,cache_id)
--~ print(cache_id)
if not tfmdata then
local otfdata = otf.load(filename,format,sub,features and features.featurefile)
if otfdata and next(otfdata) then
otfdata.shared = otfdata.shared or {
featuredata = { },
anchorhash = { },
initialized = false,
}
tfmdata = otf.copy_to_tfm(otfdata,cache_id)
if tfmdata and next(tfmdata) then
tfmdata.unique = tfmdata.unique or { }
tfmdata.shared = tfmdata.shared or { } -- combine
local shared = tfmdata.shared
shared.otfdata = otfdata
shared.features = features -- default
shared.dynamics = { }
shared.processes = { }
shared.set_dynamics = otf.set_dynamics -- fast access and makes other modules independent
-- this will be done later anyway, but it's convenient to have
-- them already for fast access
tfmdata.luatex = otfdata.luatex
tfmdata.indices = otfdata.luatex.indices
tfmdata.unicodes = otfdata.luatex.unicodes
tfmdata.marks = otfdata.luatex.marks
tfmdata.originals = otfdata.luatex.originals
tfmdata.changed = { }
tfmdata.has_italic = otfdata.metadata.has_italic
if not tfmdata.language then tfmdata.language = 'dflt' end
if not tfmdata.script then tfmdata.script = 'dflt' end
shared.processes, shared.features = otf.set_features(tfmdata,fonts.define.check(features,otf.features.default))
end
end
containers.write(tfm.cache,cache_id,tfmdata)
end
return tfmdata
end
--~ {
--~ ['boundingbox']={ 95, -458, 733, 1449 },
--~ ['class']="base",
--~ ['name']="braceleft",
--~ ['unicode']=123,
--~ ['vert_variants']={
--~ ['italic_correction']=0,
--~ ['parts']={
--~ { ['component']="uni23A9", ['endConnectorLength']=1000, ['fullAdvance']=2546, ['is_extender']=0, ['startConnectorLength']=0, }, -- bot
--~ { ['component']="uni23AA", ['endConnectorLength']=2500, ['fullAdvance']=2501, ['is_extender']=1, ['startConnectorLength']=2500, }, -- rep
--~ { ['component']="uni23A8", ['endConnectorLength']=1000, ['fullAdvance']=4688, ['is_extender']=0, ['startConnectorLength']=1000, }, -- mid
--~ { ['component']="uni23AA", ['endConnectorLength']=2500, ['fullAdvance']=2501, ['is_extender']=1, ['startConnectorLength']=2500, }, -- rep
--~ { ['component']="uni23A7", ['endConnectorLength']=0, ['fullAdvance']=2546, ['is_extender']=0, ['startConnectorLength']=1000, }, -- top
--~ },
--~ ['variants']="braceleft braceleft.vsize1 braceleft.vsize2 braceleft.vsize3 braceleft.vsize4 braceleft.vsize5 braceleft.vsize6 braceleft.vsize7",
--~ },
--~ ['width']=793,
--~ },
-- the first version made a top/mid/not extensible table, now we just pass on the variants data
-- and deal with it in the tfm scaler (there is no longer an extensible table anyway)
-- we cannot share descriptions as virtual fonts might extend them (ok, we could
-- use a cache with a hash
fonts.formats.dfont = "truetype"
fonts.formats.ttc = "truetype"
fonts.formats.ttf = "truetype"
fonts.formats.otf = "opentype"
function otf.copy_to_tfm(data,cache_id) -- we can save a copy when we reorder the tma to unicode (nasty due to one->many)
if data then
local glyphs, pfminfo, metadata = data.glyphs or { }, data.pfminfo or { }, data.metadata or { }
local luatex = data.luatex
local unicodes = luatex.unicodes -- names to unicodes
local indices = luatex.indices
local characters, parameters, math_parameters, descriptions = { }, { }, { }, { }
local designsize = metadata.designsize or metadata.design_size or 100
if designsize == 0 then
designsize = 100
end
local spaceunits, spacer = 500, "space"
-- indices maps from unicodes to indices
for u, i in next, indices do
characters[u] = { } -- we need this because for instance we add protruding info and loop over characters
descriptions[u] = glyphs[i]
end
-- math
if metadata.math then
-- parameters
for name, value in next, metadata.math do
math_parameters[name] = value
end
-- we could use a subset
for u, char in next, characters do
local d = descriptions[u]
local m = d.math
-- we have them shared because that packs nicer
-- we could prepare the variants and keep 'm in descriptions
if m then
local variants, parts, c, uc = m.horiz_variants, m.horiz_parts, char, u
if variants then
for n in gmatch(variants,"[^ ]+") do
local un = unicodes[n]
if un and uc ~= un then
c.next = un
c = characters[un]
uc = un
end
end
c.horiz_variants = parts
elseif parts then
c.horiz_variants = parts
end
local variants, parts, c, uc = m.vert_variants, m.vert_parts, char, u
if variants then
for n in gmatch(variants,"[^ ]+") do
local un = unicodes[n]
if un and uc ~= un then
c.next = un
c = characters[un]
uc = un
end
end -- c is now last in chain
c.vert_variants = parts
elseif parts then
c.vert_variants = parts
end
local italic_correction = m.vert_italic_correction
if italic_correction then
c.vert_italic_correction = italic_correction
end
local kerns = m.kerns
if kerns then
char.mathkerns = kerns
end
end
end
end
-- end math
local endash, emdash, space = 0x20, 0x2014, "space" -- unicodes['space'], unicodes['emdash']
if metadata.isfixedpitch then
if descriptions[endash] then
spaceunits, spacer = descriptions[endash].width, "space"
end
if not spaceunits and descriptions[emdash] then
spaceunits, spacer = descriptions[emdash].width, "emdash"
end
if not spaceunits and metadata.charwidth then
spaceunits, spacer = metadata.charwidth, "charwidth"
end
else
if descriptions[endash] then
spaceunits, spacer = descriptions[endash].width, "space"
end
if not spaceunits and descriptions[emdash] then
spaceunits, spacer = descriptions[emdash].width/2, "emdash/2"
end
if not spaceunits and metadata.charwidth then
spaceunits, spacer = metadata.charwidth, "charwidth"
end
end
spaceunits = tonumber(spaceunits) or tfm.units/2 -- 500 -- brrr
-- we need a runtime lookup because of running from cdrom or zip, brrr (shouldn't we use the basename then?)
local filename = fonts.tfm.checked_filename(luatex)
local fontname = metadata.fontname
local fullname = metadata.fullname or fontname
local cidinfo = data.cidinfo
local units = metadata.units_per_em or 1000
--
cidinfo.registry = cidinfo and cidinfo.registry or "" -- weird here, fix upstream
--
parameters.slant = 0
parameters.space = spaceunits -- 3.333 (cmr10)
parameters.space_stretch = units/2 -- 500 -- 1.666 (cmr10)
parameters.space_shrink = 1*units/3 -- 333 -- 1.111 (cmr10)
parameters.x_height = 2*units/5 -- 400
parameters.quad = units -- 1000
if spaceunits < 2*units/5 then
-- todo: warning
end
local italicangle = metadata.italicangle
if italicangle then -- maybe also in afm _
parameters.slant = parameters.slant - math.round(math.tan(italicangle*math.pi/180))
end
if metadata.isfixedpitch then
parameters.space_stretch = 0
parameters.space_shrink = 0
elseif otf.syncspace then --
parameters.space_stretch = spaceunits/2
parameters.space_shrink = spaceunits/3
end
parameters.extra_space = parameters.space_shrink -- 1.111 (cmr10)
if pfminfo.os2_xheight and pfminfo.os2_xheight > 0 then
parameters.x_height = pfminfo.os2_xheight
else
local x = 0x78 -- unicodes['x']
if x then
local x = descriptions[x]
if x then
parameters.x_height = x.height
end
end
end
--
return {
characters = characters,
parameters = parameters,
math_parameters = math_parameters,
descriptions = descriptions,
indices = indices,
unicodes = unicodes,
type = "real",
direction = 0,
boundarychar_label = 0,
boundarychar = 65536,
designsize = (designsize/10)*65536,
spacer = "500 units",
encodingbytes = 2,
filename = filename,
fontname = fontname,
fullname = fullname,
psname = fontname or fullname,
name = filename or fullname,
units = units,
format = fonts.fontformat(filename,"opentype"),
cidinfo = cidinfo,
ascender = abs(metadata.ascent or 0),
descender = abs(metadata.descent or 0),
spacer = spacer,
italicangle = italicangle,
}
else
return nil
end
end
otf.features.register('mathsize')
function tfm.read_from_open_type(specification)
local tfmtable = otf.otf_to_tfm(specification)
if tfmtable then
local otfdata = tfmtable.shared.otfdata
tfmtable.name = specification.name
tfmtable.sub = specification.sub
local s = specification.size
local m = otfdata.metadata.math
if m then
-- this will move to a function
local f = specification.features
if f then
local f = f.normal
if f and f.mathsize then
local mathsize = specification.mathsize or 0
if mathsize == 2 then
local p = m.ScriptPercentScaleDown
if p then
local ps = p * specification.textsize / 100
if trace_math then
logs.report("define font","asked script size: %s, used: %s (%2.2f %%)",s,ps,(ps/s)*100)
end
s = ps
end
elseif mathsize == 3 then
local p = m.ScriptScriptPercentScaleDown
if p then
local ps = p * specification.textsize / 100
if trace_math then
logs.report("define font","asked scriptscript size: %s, used: %s (%2.2f %%)",s,ps,(ps/s)*100)
end
s = ps
end
end
end
end
end
tfmtable = tfm.scale(tfmtable,s,specification.relativeid)
if tfm.fontname_mode == "specification" then
-- not to be used in context !
local specname = specification.specification
if specname then
tfmtable.name = specname
if trace_defining then
logs.report("define font","overloaded fontname: '%s'",specname)
end
end
end
fonts.logger.save(tfmtable,file.extname(specification.filename),specification)
end
--~ print(tfmtable.fullname)
return tfmtable
end
-- helpers
function otf.collect_lookups(otfdata,kind,script,language)
-- maybe store this in the font
local sequences = otfdata.luatex.sequences
if sequences then
local featuremap, featurelist = { }, { }
for s=1,#sequences do
local sequence = sequences[s]
local features = sequence.features
features = features and features[kind]
features = features and (features[script] or features[default] or features[wildcard])
features = features and (features[language] or features[default] or features[wildcard])
if features then
local subtables = sequence.subtables
if subtables then
for s=1,#subtables do
local ss = subtables[s]
if not featuremap[s] then
featuremap[ss] = true
featurelist[#featurelist+1] = ss
end
end
end
end
end
if #featurelist > 0 then
return featuremap, featurelist
end
end
return nil, nil
end
Mini Shell