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|
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"
}
-- langs -> languages enz
-- anchor_classes vs kernclasses
-- modification/creationtime in subfont is runtime dus zinloos
-- to_table -> totable
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 reverse = table.reverse
local ioflush = io.flush
local allocate = utilities.storage.allocate
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)
local report_otf = logs.new("load otf")
local starttiming, stoptiming, elapsedtime = statistics.starttiming, statistics.stoptiming, statistics.elapsedtime
local fonts = fonts
fonts.otf = fonts.otf or { }
local otf = fonts.otf
local tfm = fonts.tfm
local fontdata = fonts.ids
local chardata = characters.data
otf.features = otf.features or { }
otf.features.list = otf.features.list or { }
otf.features.default = otf.features.default or { }
otf.enhancers = allocate()
local enhancers = otf.enhancers
enhancers.patches = { }
local definers = fonts.definers
otf.glists = { "gsub", "gpos" }
otf.version = 2.705 -- beware: also sync font-mis.lua
otf.cache = containers.define("fonts", "otf", otf.version, true)
local loadmethod = "table" -- table, mixed, sparse
local forceload = false
local cleanup = 0
local usemetatables = false -- .4 slower on mk but 30 M less mem so we might change the default -- will be directive
local packdata = true
local syncspace = true
local forcenotdef = false
local wildcard = "*"
local default = "dflt"
local fontloaderfields = fontloader.fields
local mainfields = nil
local glyphfields = nil -- not used yet
directives.register("fonts.otf.loader.method", function(v)
if v == "sparse" and fontloaderfields then
loadmethod = "sparse"
elseif v == "mixed" then
loadmethod = "mixed"
elseif v == "table" then
loadmethod = "table"
else
loadmethod = "table"
report_otf("no loader method '%s', using '%s' instead",v,loadmethod)
end
end)
directives.register("fonts.otf.loader.cleanup",function(v)
cleanup = tonumber(v) or (v and 1) or 0
end)
directives.register("fonts.otf.loader.force", function(v) forceload = v end)
directives.register("fonts.otf.loader.usemetatables", function(v) usemetatables = v end)
directives.register("fonts.otf.loader.pack", function(v) packdata = v end)
directives.register("fonts.otf.loader.syncspace", function(v) syncspace = v end)
directives.register("fonts.otf.loader.forcenotdef", function(v) forcenotdef = v end)
local function load_featurefile(raw,featurefile)
if featurefile and featurefile ~= "" then
if trace_loading then
report_otf("featurefile: %s", featurefile)
end
fontloader.apply_featurefile(raw, featurefile)
end
end
local function showfeatureorder(otfdata,filename)
local sequences = otfdata.luatex.sequences
if sequences and #sequences > 0 then
if trace_loading then
report_otf("font %s has %s sequences",filename,#sequences)
report_otf(" ")
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
report_otf("%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
report_otf(" %s: %s",feature,concat(tt," "))
end
end
end
end
if trace_loading then
report_otf("\n")
end
elseif trace_loading then
report_otf("font %s has no sequences",filename)
end
end
--[[ldx--
<p>We start with a lot of tables and related functions.</p>
--ldx]]--
local global_fields = table.tohash {
"metadata",
"lookups",
"glyphs",
"subfonts",
"luatex",
"pfminfo",
"cidinfo",
"tables",
"names",
"unicodes",
"names",
-- "math",
"anchor_classes",
"kern_classes",
"gpos",
"gsub"
}
local valid_fields = table.tohash {
-- "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",
}
local ordered_enhancers = {
"prepare tables",
"prepare glyphs",
"prepare unicodes",
"prepare lookups",
"analyze glyphs",
"analyze math",
"prepare tounicode", -- maybe merge with prepare
"reorganize lookups",
"reorganize mark classes",
"reorganize anchor classes",
"reorganize glyph kerns",
"reorganize glyph lookups",
"reorganize glyph anchors",
"reorganize features",
"reorganize subtables",
"check glyphs",
"check metadata",
"check math parameters",
"check extra features", -- after metadata
}
--[[ldx--
<p>Here we go.</p>
--ldx]]--
local actions = { }
enhancers.patches.before = allocate()
enhancers.patches.after = allocate()
local before = enhancers.patches.before
local after = enhancers.patches.after
local function enhance(name,data,filename,raw,verbose)
local enhancer = actions[name]
if enhancer then
if verbose then
report_otf("enhance: %s (%s)",name,filename)
ioflush()
end
enhancer(data,filename,raw)
else
report_otf("enhance: %s is undefined",name)
end
end
function enhancers.apply(data,filename,raw,verbose)
local basename = file.basename(lower(filename))
report_otf("start enhancing: %s",filename)
ioflush() -- we want instant messages
for e=1,#ordered_enhancers do
local enhancer = ordered_enhancers[e]
local b = before[enhancer]
if b then
for pattern, action in next, b do
if find(basename,pattern) then
action(data,filename,raw)
end
end
end
enhance(enhancer,data,filename,raw,verbose)
local a = after[enhancer]
if a then
for pattern, action in next, a do
if find(basename,pattern) then
action(data,filename,raw)
end
end
end
ioflush() -- we want instant messages
end
report_otf("stop enhancing")
ioflush() -- we want instant messages
end
-- enhancers.patches.register("before","migrate metadata","cambria",function() end)
function enhancers.patches.register(what,where,pattern,action)
local ww = what[where]
if ww then
ww[pattern] = action
else
ww = { [pattern] = action}
end
end
function enhancers.register(what,action) -- only already registered can be overloaded
actions[what] = action
end
function otf.load(filename,format,sub,featurefile)
local name = file.basename(file.removesuffix(filename))
local attr = lfs.attributes(filename)
local size, time = attr and attr.size or 0, attr and attr.modification or 0
if featurefile then
name = name .. "@" .. file.removesuffix(file.basename(featurefile))
end
if sub == "" then sub = false end
local hash = name
if sub then
hash = hash .. "-" .. sub
end
hash = containers.cleanname(hash)
local featurefiles
if featurefile then
featurefiles = { }
for s in gmatch(featurefile,"[^,]+") do
local name = resolvers.findfile(file.addsuffix(s,'fea'),'fea') or ""
if name == "" then
report_otf("loading: no featurefile '%s'",s)
else
local attr = lfs.attributes(name)
featurefiles[#featurefiles+1] = {
name = name,
size = attr.size or 0,
time = attr.modification or 0,
}
end
end
if #featurefiles == 0 then
featurefiles = nil
end
end
local data = containers.read(otf.cache,hash)
local reload = not data or data.verbose ~= fonts.verbose or data.size ~= size or data.time ~= time
if forceload then
report_otf("loading: forced reload due to hard coded flag")
reload = true
end
if not reload then
local featuredata = data.featuredata
if featurefiles then
if not featuredata or #featuredata ~= #featurefiles then
reload = true
else
for i=1,#featurefiles do
local fi, fd = featurefiles[i], featuredata[i]
if fi.name ~= fd.name or fi.size ~= fd.size or fi.time ~= fd.time then
reload = true
break
end
end
end
elseif featuredata then
reload = true
end
if reload then
report_otf("loading: forced reload due to changed featurefile specification: %s",featurefile or "--")
end
end
if reload then
report_otf("loading: %s (hash: %s)",filename,hash)
local fontdata, messages, rawdata
if sub then
fontdata, messages = fontloader.open(filename,sub)
else
fontdata, messages = fontloader.open(filename)
end
if fontdata then
mainfields = mainfields or (fontloaderfields and fontloaderfields(fontdata))
end
if trace_loading and messages and #messages > 0 then
if type(messages) == "string" then
report_otf("warning: %s",messages)
else
for m=1,#messages do
report_otf("warning: %s",tostring(messages[m]))
end
end
else
report_otf("font loaded okay")
end
if fontdata then
if featurefiles then
for i=1,#featurefiles do
load_featurefile(fontdata,featurefiles[i].name)
end
end
report_otf("loading method: %s",loadmethod)
if loadmethod == "sparse" then
rawdata = fontdata
else
rawdata = fontloader.to_table(fontdata)
fontloader.close(fontdata)
end
if rawdata then
data = { }
starttiming(data)
local verboseindeed = verbose ~= nil and verbose or trace_loading
report_otf("file size: %s", size)
enhancers.apply(data,filename,rawdata,verboseindeed)
if packdata and not fonts.verbose then
enhance("pack",data,filename,nil,verboseindeed)
end
data.size = size
data.time = time
if featurefiles then
data.featuredata = featurefiles
end
data.verbose = fonts.verbose
report_otf("saving in cache: %s",filename)
data = containers.write(otf.cache, hash, data)
if cleanup > 0 then
collectgarbage("collect")
end
stoptiming(data)
if elapsedtime then -- not in generic
report_otf("preprocessing and caching took %s seconds",elapsedtime(data))
end
data = containers.read(otf.cache, hash) -- this frees the old table and load the sparse one
if cleanup > 1 then
collectgarbage("collect")
end
else
data = nil
report_otf("loading failed (table conversion error)")
end
if loadmethod == "sparse" then
fontloader.close(fontdata)
if cleanup > 2 then
-- collectgarbage("collect")
end
end
else
data = nil
report_otf("loading failed (file read error)")
end
end
if data then
if trace_defining then
report_otf("loading from cache: %s",hash)
end
enhance("unpack",data,filename,nil,false)
enhance("add dimensions",data,filename,nil,false)
if trace_sequences then
showfeatureorder(data,filename)
end
end
return data
end
local mt = {
__index = function(t,k) -- maybe set it
if k == "height" then
local ht = t.boundingbox[4]
return ht < 0 and 0 or ht
elseif k == "depth" then
local dp = -t.boundingbox[2]
return dp < 0 and 0 or dp
elseif k == "width" then
return 0
elseif k == "name" then -- or maybe uni*
return forcenotdef and ".notdef"
end
end
}
actions["add dimensions"] = function(data,filename)
-- 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 luatex = data.luatex
local defaultwidth = luatex.defaultwidth or 0
local defaultheight = luatex.defaultheight or 0
local defaultdepth = luatex.defaultdepth or 0
if usemetatables then
for _, d in next, data.glyphs do
local wd = d.width
if not wd then
d.width = defaultwidth
elseif wd ~= 0 and d.class == "mark" then
d.width = -wd
end
setmetatable(d,mt)
end
else
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 forcenotdef 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
-- not set
else
d.height = ht
end
if dp == 0 or dp < 0 then
-- not set
else
d.depth = dp
end
end
end
end
end
end
actions["prepare tables"] = function(data,filename,raw)
local luatex = {
filename = filename,
version = otf.version,
creator = "context mkiv",
}
data.luatex = luatex
data.metadata = { }
end
local function somecopy(old) -- fast one
if old then
local new = { }
if type(old) == "table" then
for k, v in next, old do
if k == "glyphs" then
-- skip
elseif type(v) == "table" then
new[k] = somecopy(v)
else
new[k] = v
end
end
else
for i=1,#mainfields do
local k = mainfields[i]
local v = old[k]
if k == "glyphs" then
-- skip
elseif type(v) == "table" then
new[k] = somecopy(v)
else
new[k] = v
end
end
end
return new
else
return { }
end
end
-- not setting italic_correction and class (when nil) during
-- table cronstruction can save some mem
actions["prepare glyphs"] = function(data,filename,raw)
-- we can also move the names to data.luatex.names which might
-- save us some more memory (at the cost of harder tracing)
local rawglyphs = raw.glyphs
local glyphs, udglyphs
if loadmethod == "sparse" then
glyphs, udglyphs = { }, { }
elseif loadmethod == "mixed" then
glyphs, udglyphs = { }, rawglyphs
else
glyphs, udglyphs = rawglyphs, rawglyphs
end
data.glyphs, data.udglyphs = glyphs, udglyphs
local subfonts = raw.subfonts
if subfonts then
if data.glyphs and next(data.glyphs) then
report_otf("replacing existing glyph table due to subfonts")
end
local cidinfo = raw.cidinfo
if cidinfo.registry then
local cidmap, cidname = fonts.cid.getmap(cidinfo.registry,cidinfo.ordering,cidinfo.supplement)
if cidmap then
cidinfo.usedname = cidmap.usedname
local uni_to_int, int_to_uni, nofnames, nofunicodes = { }, { }, 0, 0
local unicodes, names = cidmap.unicodes, cidmap.names
for cidindex=1,#subfonts do
local subfont = subfonts[cidindex]
if loadmethod == "sparse" then
local rawglyphs = subfont.glyphs
for index=0,subfont.glyphmax - 1 do
local g = rawglyphs[index]
if g then
local unicode, name = unicodes[index], names[index]
if unicode then
uni_to_int[unicode] = index
int_to_uni[index] = unicode
nofunicodes = nofunicodes + 1
elseif name then
nofnames = nofnames + 1
end
udglyphs[index] = g
glyphs[index] = {
width = g.width,
italic = g.italic_correction,
boundingbox = g.boundingbox,
class = g.class,
name = g.name or name or "unknown", -- uniXXXX
cidindex = cidindex,
unicode = unicode,
}
end
end
-- If we had more userdata, we would need more of this
-- and it would start working against us in terms of
-- convenience and speed.
subfont = somecopy(subfont)
subfont.glyphs = nil
subfont[cidindex] = subfont
elseif loadmethod == "mixed" then
for index, g in next, subfont.glyphs do
local unicode, name = unicodes[index], names[index]
if unicode then
uni_to_int[unicode] = index
int_to_uni[index] = unicode
nofunicodes = nofunicodes + 1
elseif name then
nofnames = nofnames + 1
end
udglyphs[index] = g
glyphs[index] = {
width = g.width,
italic = g.italic_correction,
boundingbox = g.boundingbox,
class = g.class,
name = g.name or name or "unknown", -- uniXXXX
cidindex = cidindex,
unicode = unicode,
}
end
subfont.glyphs = nil
else
for index, g in next, subfont.glyphs do
local unicode, name = unicodes[index], names[index]
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
end
g.cidindex = cidindex
glyphs[index] = g
end
subfont.glyphs = nil
end
end
if trace_loading then
report_otf("cid font remapped, %s unicode points, %s symbolic names, %s glyphs",nofunicodes, nofnames, nofunicodes+nofnames)
end
data.map = data.map or { }
data.map.map = uni_to_int
data.map.backmap = int_to_uni
elseif trace_loading then
report_otf("unable to remap cid font, missing cid file for %s",filename)
end
data.subfonts = subfonts
elseif trace_loading then
report_otf("font %s has no glyphs",filename)
end
else
if loadmethod == "sparse" then
-- we get fields from the userdata glyph table and create
-- a minimal entry first
for index=0,raw.glyphmax - 1 do
local g = rawglyphs[index]
if g then
udglyphs[index] = g
glyphs[index] = {
width = g.width,
italic = g.italic_correction,
boundingbox = g.boundingbox,
class = g.class,
name = g.name,
unicode = g.unicode,
}
end
end
elseif loadmethod == "mixed" then
-- we get fields from the totable glyph table and copy to the
-- final glyph table so first we create a minimal entry
for index, g in next, rawglyphs do
udglyphs[index] = g
glyphs[index] = {
width = g.width,
italic = g.italic_correction,
boundingbox = g.boundingbox,
class = g.class,
name = g.name,
unicode = g.unicode,
}
end
else
-- we use the totable glyph table directly and manipulate the
-- entries in this (also final) table
end
data.map = raw.map
end
data.cidinfo = raw.cidinfo -- hack
end
-- watch copy of cidinfo: we can best make some more copies to data
actions["analyze glyphs"] = function(data,filename,raw) -- maybe integrate this in the previous
local glyphs = data.glyphs
-- collect info
local has_italic, widths, marks = false, { }, { }
for index, glyph in next, glyphs do
local italic = glyph.italic_correction
if not italic then
-- skip
elseif italic == 0 then
glyph.italic_correction = nil
glyph.italic = nil
else
glyph.italic_correction = nil
glyph.italic = italic
has_italic = true
end
local width = glyph.width
widths[width] = (widths[width] or 0) + 1
local class = glyph.class
local unicode = glyph.unicode
if class == "mark" then
marks[unicode] = true
-- elseif chardata[unicode].category == "mn" then
-- marks[unicode] = true
-- glyph.class = "mark"
end
local a = glyph.altuni if a then glyph.altuni = nil end
local d = glyph.dependents if d then glyph.dependents = nil end
local v = glyph.vwidth if v then glyph.vwidth = nil end
end
-- flag italic
data.metadata.has_italic = has_italic
-- flag marks
data.luatex.marks = marks
-- share most common 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 -- maybe 500
if trace_loading then
report_otf("most common width: %s (%s times), sharing (cjk font)",wd,most)
end
for index, glyph in next, glyphs do
if glyph.width == wd then
glyph.width = nil
end
end
data.luatex.defaultwidth = wd
end
end
actions["reorganize mark classes"] = function(data,filename,raw)
local mark_classes = raw.mark_classes
if mark_classes then
local luatex = data.luatex
local unicodes = luatex.unicodes
local reverse = { }
luatex.markclasses = reverse
for name, class in next, 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.mark_classes = nil -- when using table
end
end
actions["reorganize features"] = function(data,filename,raw) -- combine with other
local features = { }
data.luatex.features = features
for k, what in next, otf.glists do
local dw = raw[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 i=1,#dscripts do
local d = dscripts[i]
local languages = d.langs
local script = strip(lower(d.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
actions["reorganize anchor classes"] = function(data,filename,raw)
local classes = raw.anchor_classes -- anchor classes not in final table
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
actions["prepare tounicode"] = function(data,filename,raw)
fonts.map.addtounicode(data,filename)
end
actions["reorganize subtables"] = function(data,filename,raw)
local luatex = data.luatex
local sequences, lookups = { }, { }
luatex.sequences, luatex.lookups = sequences, lookups
for _, what in next, otf.glists do
local dw = raw[what]
if dw then
for k=1,#dw do
local gk = dw[k]
local typ = gk.type
local chain =
(typ == "gsub_contextchain" or typ == "gpos_contextchain") and 1 or
(typ == "gsub_reversecontextchain" or typ == "gpos_reversecontextchain") and -1 or 0
--
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
subtables = t
end
local flags, markclass = gk.flags, nil
if flags then
local t = { -- 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,
}
markclass = flags.mark_class
if markclass then
markclass = luatex.markclasses[markclass]
end
flags = t
end
--
local name = gk.name
--
local features = gk.features
if features then
-- scripts, tag, ismac
local f = { }
for i=1,#features do
local df = features[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 i=1,#dscripts do
local d = dscripts[i]
local languages = d.langs
local script = strip(lower(d.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
sequences[#sequences+1] = {
type = typ,
chain = chain,
flags = flags,
name = name,
subtables = subtables,
markclass = markclass,
features = f,
}
else
lookups[name] = {
type = typ,
chain = chain,
flags = flags,
subtables = subtables,
markclass = markclass,
}
end
end
end
end
end
actions["prepare unicodes"] = function(data,filename,raw)
local luatex = data.luatex
local indices, unicodes, multiples, internals = { }, { }, { }, { }
local mapmap = data.map or raw.map
if not mapmap then
report_otf("no map in %s",filename)
mapmap = { }
data.map = { map = mapmap }
elseif not mapmap.map then
report_otf("no unicode map in %s",filename)
mapmap = { }
data.map.map = mapmap
else
mapmap = mapmap.map
end
local criterium = fonts.privateoffset
local private = criterium
local glyphs = data.glyphs
for index, glyph in next, glyphs do
if index > 0 then
local name = glyph.name -- really needed ?
if name then
local unicode = glyph.unicode
if not unicode or unicode == -1 or unicode >= criterium then
glyph.unicode = private
indices[private] = index
unicodes[name] = private
internals[index] = true
if trace_private then
report_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
else
-- message that something is wrong
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 -- tonumber(un)
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
report_otf("%s glyphs are reused: %s",#multiples, concat(multiples," "))
else
report_otf("no glyphs are reused")
end
end
luatex.indices = indices
luatex.unicodes = unicodes
luatex.private = private
end
actions["prepare lookups"] = function(data,filename,raw)
local lookups = raw.lookups
if lookups then
data.lookups = lookups
end
end
actions["reorganize lookups"] = function(data,filename,raw)
-- 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 = reverse(c.before)
end
end
end
end
end
end
actions["analyze math"] = function(data,filename,raw)
if raw.math then
data.metadata.math = raw.math
-- we move the math stuff into a math subtable because we then can
-- test faster in the tfm copy
local glyphs, udglyphs = data.glyphs, data.udglyphs
local unicodes = data.luatex.unicodes
for index, udglyph in next, udglyphs do
local mk = udglyph.mathkern
local hv = udglyph.horiz_variants
local vv = udglyph.vert_variants
if mk or hv or vv then
local glyph = glyphs[index]
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
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
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
end
local ic = glyph.italic_correction
if ic then
if ic ~= 0 then
math.italic_correction = ic
end
end
end
end
end
end
actions["reorganize glyph kerns"] = function(data,filename,raw)
local luatex = data.luatex
local udglyphs, glyphs, mapmap, unicodes = data.udglyphs, data.glyphs, luatex.indices, luatex.unicodes
local mkdone = false
local function do_it(lookup,first_unicode,extrakerns) -- can be moved inline but seldom used
local glyph = glyphs[mapmap[first_unicode]]
if glyph then
local kerns = glyph.kerns
if not kerns then
kerns = { } -- unicode indexed !
glyph.kerns = kerns
end
local lookupkerns = kerns[lookup]
if not lookupkerns then
lookupkerns = { }
kerns[lookup] = lookupkerns
end
for second_unicode, kern in next, extrakerns do
lookupkerns[second_unicode] = kern
end
elseif trace_loading then
report_otf("no glyph data for U+%04X", first_unicode)
end
end
for index, udglyph in next, data.udglyphs do
local kerns = udglyph.kerns
if kerns then
local glyph = glyphs[index]
local newkerns = { }
for k,v in next, 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
report_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 = newkerns[vll]
if not mkl then
mkl = { }
newkerns[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.kerns = newkerns -- udglyph.kerns = nil when in mixed mode
mkdone = true
end
end
if trace_loading and mkdone then
report_otf("replacing 'kerns' tables by a new 'kerns' tables")
end
local dgpos = raw.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 kerns in the indexed glyph tables."
subtable.kernclass = { }
end
end
end
end
end
end
actions["check glyphs"] = function(data,filename,raw)
local verbose = fonts.verbose
local int_to_uni = data.luatex.unicodes
for k, v in next, data.glyphs do
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
-- only needed on non sparse/mixed mode
if v.math then
if v.mathkern then v.mathkern = nil end
if v.horiz_variant then v.horiz_variant = nil end
if v.vert_variants then v.vert_variants = nil end
end
--
end
data.luatex.comment = "Glyph tables have their original index. When present, kern tables are indexed by unicode."
end
actions["check metadata"] = function(data,filename,raw)
local metadata = data.metadata
metadata.method = loadmethod
if loadmethod == "sparse" then
for _, k in next, mainfields do
if valid_fields[k] then
local v = raw[k]
if global_fields[k] then
if not data[k] then
data[k] = v
end
else
if not metadata[k] then
metadata[k] = v
end
end
end
end
else
for k, v in next, raw do
if valid_fields[k] then
if global_fields[k] then
if not data[k] then
data[v] = v
end
else
if not metadata[k] then
metadata[k] = v
end
end
end
end
end
local pfminfo = raw.pfminfo
if pfminfo then
data.pfminfo = pfminfo
metadata.isfixedpitch = metadata.isfixedpitch or (pfminfo.panose and pfminfo.panose.proportion == "Monospaced")
metadata.charwidth = pfminfo and pfminfo.avgwidth
end
local ttftables = metadata.ttf_tables
if ttftables then
for i=1,#ttftables do
ttftables[i].data = "deleted"
end
end
metadata.xuid = nil
data.udglyphs = nil
data.map = nil
end
local private_math_parameters = {
"FractionDelimiterSize",
"FractionDelimiterDisplayStyleSize",
}
actions["check math parameters"] = function(data,filename,raw)
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
report_otf("setting math parameter '%s' to 0", pmp)
end
mathdata[pmp] = 0
end
end
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).
actions["reorganize glyph lookups"] = function(data,filename,raw)
local glyphs = data.glyphs
for index, udglyph in next, data.udglyphs do
local lookups = udglyph.lookups
if lookups then
local glyph = glyphs[index]
local l = { }
for kk, vv in next, lookups do
local aa = { }
l[kk] = aa
for kkk=1,#vv do
local vvv = vv[kkk]
local s = vvv.specification
local t = vvv.type
-- #aa+1
if t == "ligature" then
aa[kkk] = { "ligature", s.components, s.char }
elseif t == "alternate" then
aa[kkk] = { "alternate", s.components }
elseif t == "substitution" then
aa[kkk] = { "substitution", s.variant }
elseif t == "multiple" then
aa[kkk] = { "multiple", s.components }
elseif t == "position" then
aa[kkk] = { "position", { s.x or 0, s.y or 0, s.h or 0, s.v or 0 } }
elseif t == "pair" then
-- maybe flatten this one
local one, two, paired = s.offsets[1], s.offsets[2], s.paired or ""
if one then
if two then
aa[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
aa[kkk] = { "pair", paired, { one.x or 0, one.y or 0, one.h or 0, one.v or 0 } }
end
else
if two then
aa[kkk] = { "pair", paired, { }, { two.x or 0, two.y or 0, two.h or 0, two.v or 0} } -- maybe nil instead of { }
else
aa[kkk] = { "pair", paired }
end
end
end
end
end
-- we could combine this
local slookups, mlookups
for kk, vv in next, l do
if #vv == 1 then
if not slookups then
slookups = { }
glyph.slookups = slookups
end
slookups[kk] = vv[1]
else
if not mlookups then
mlookups = { }
glyph.mlookups = mlookups
end
mlookups[kk] = vv
end
end
glyph.lookups = nil -- when using table
end
end
end
actions["reorganize glyph anchors"] = function(data,filename,raw)
local glyphs = data.glyphs
for index, udglyph in next, data.udglyphs do
local anchors = udglyph.anchors
if anchors then
local glyph = glyphs[index]
local a = { }
glyph.anchors = a
for kk, vv in next, anchors do
local aa = { }
a[kk] = aa
for kkk, vvv in next, vv do
if vvv.x or vvv.y then
aa[kkk] = { vvv.x , vvv.y }
else
local aaa = { }
aa[kkk] = aaa
for kkkk=1,#vvv do
local vvvv = vvv[kkkk]
aaa[kkkk] = { vvvv.x, vvvv.y }
end
end
end
end
end
end
end
--~ actions["check extra features"] = function(data,filename,raw)
--~ -- 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
local lists = { -- why local
fonts.triggers,
fonts.processors,
fonts.manipulators,
}
function otf.setfeatures(tfmdata,features)
local processes = { }
if features and next(features) then
local mode = tfmdata.mode or features.mode or "base"
local initializers = fonts.initializers
local fi = initializers[mode]
if fi then
local fiotf = fi.otf
if fiotf then
local done = { }
for l=1,#lists 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
report_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 features.mode or "base"
local im = initializers[mode]
if im then
fiotf = initializers[mode].otf
end
done[f] = true
end
end
end
end
end
end
end
tfmdata.mode = mode
local fm = fonts.methods[mode] -- todo: zonder node/mode otf/...
if fm then
local fmotf = fm.otf
if fmotf then
for l=1,#lists 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
report_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
-- 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"
local function copytotfm(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 mode = data.mode or "base"
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 = m.horiz_variants, m.horiz_parts, char
if variants then
for n in gmatch(variants,"[^ ]+") do
local un = unicodes[n]
if un and u ~= un then
c.next = un
c = characters[un]
end
end
c.horiz_variants = parts
elseif parts then
c.horiz_variants = parts
end
local variants, parts, c = m.vert_variants, m.vert_parts, char
if variants then
for n in gmatch(variants,"[^ ]+") do
local un = unicodes[n]
if un and u ~= un then
c.next = un
c = characters[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.checkedfilename(luatex)
local fontname = metadata.fontname
local fullname = metadata.fullname or fontname
local cidinfo = data.cidinfo -- or { }
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 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,
mode = mode,
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
local function otftotfm(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 = copytotfm(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.setdynamics = otf.setdynamics -- 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.setfeatures(tfmdata,definers.check(features,otf.features.default))
end
end
containers.write(tfm.cache,cache_id,tfmdata)
end
return tfmdata
end
otf.features.register('mathsize')
function tfm.read_from_otf(specification) -- wrong namespace
local tfmtable = otftotfm(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
report_otf("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
report_otf("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.fontnamemode == "specification" then
-- not to be used in context !
local specname = specification.specification
if specname then
tfmtable.name = specname
if trace_defining then
report_otf("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.collectlookups(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
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