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-rw-r--r--otfl-font-otf.lua1577
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diff --git a/otfl-font-otf.lua b/otfl-font-otf.lua
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+++ b/otfl-font-otf.lua
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+if not modules then modules = { } end modules ['font-otf'] = {
+ version = 1.001,
+ comment = "companion to font-ini.tex",
+ 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, getn, utfbyte = table.concat, table.getn, 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 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)
+
+--~ trackers.enable("otf.loading")
+
+local zwnj = 0x200C
+local zwj = 0x200D
+
+--[[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 { }
+
+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.version = 2.617
+otf.pack = true
+otf.enhance_data = false
+otf.syncspace = true
+otf.notdef = false
+otf.cache = containers.define("fonts", "otf", otf.version, true)
+
+--[[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",
+ "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 = input.find_file(file.addsuffix(featurefile,'fea')) -- "FONTFEATURES"
+ 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",name)
+ 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",
+ "enrich with features",
+ "reorganize kerns", -- moved here
+ "flatten glyph lookups", "flatten anchor tables", "flatten feature tables",
+ "prepare luatex tables", "analyse features", "analyse anchors", "analyse marks", "analyse unicodes", "analyse subtables",
+ "check italic correction","check math",
+ "share widths",
+ "strip not needed data",
+}
+
+function otf.load(filename,format,sub,featurefile)
+ local name = file.basename(file.removesuffix(filename))
+ if featurefile then
+ name = name .. "@" .. file.removesuffix(file.basename(featurefile))
+ end
+ if sub == "" then sub = false end
+ local hash = name
+ if sub then -- name cleanup will move to cache code
+ hash = hash .. "-" .. sub
+ hash = lower(hash)
+ hash = gsub(hash,"[^%w%d]+","-")
+ end
+ local data = containers.read(otf.cache(), hash)
+ local size = lfs.attributes(filename,"size") or 0
+ if not data or data.verbose ~= fonts.verbose or data.size ~= size then
+ logs.report("load otf","loading: %s",filename)
+ 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
+ for m=1,#messages do
+ logs.report("load otf","warning: %s",messages[m])
+ end
+ 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)
+ end
+ if otf.pack and not fonts.verbose then
+ otf.enhance("pack",data,filename)
+ end
+ data.size = size
+ 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
+ otf.enhance("unpack",data,filename,false) -- no mesage 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["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
+
+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["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
+
+local other = lpeg.C((1 - lpeg.S("_."))^0)
+local ligsplitter = lpeg.Ct(other * (lpeg.P("_") * other)^0)
+
+--~ print(splitter:match("this"))
+--~ print(splitter:match("this.that"))
+--~ print(splitter:match("such_so_more"))
+--~ print(splitter:match("such_so_more.that"))
+
+otf.enhancers["analyse unicodes"] = function(data,filename)
+ local unicodes = data.luatex.unicodes
+ unicodes['space'] = unicodes['space'] or 32 -- handly later on
+ unicodes['hyphen'] = unicodes['hyphen'] or 45 -- handly later on
+ unicodes['zwj'] = unicodes['zwj'] or zwj -- handly later on
+ unicodes['zwnj'] = unicodes['zwnj'] or zwnj -- handly later on
+ -- the tounicode mapping is sparse and only needed for alternatives
+ local tounicode, originals, ns, nl, private, unknown = { }, { }, 0, 0, fonts.private, format("%04X",utfbyte("?"))
+ data.luatex.tounicode, data.luatex.originals = tounicode, originals
+ for index, glyph in next, data.glyphs do
+ local name, unic = glyph.name, glyph.unicode or -1 -- play safe
+ if unic == -1 or unic >= private or (unic >= 0xE000 and unic <= 0xF8FF) or unic == 0xFFFE or unic == 0xFFFF then
+ -- a.whatever or a_b_c.whatever or a_b_c
+ local split = ligsplitter:match(name)
+ if #split == 0 then
+ -- skip
+ elseif #split == 1 then
+ local u = unicodes[split[1]]
+ if u then
+ if type(u) == "table" then
+ u = u[1]
+ end
+ if u < 0x10000 then
+ originals[index], tounicode[index] = u, format("%04X",u)
+ else
+ originals[index], tounicode[index] = u, format("%04X%04X",u/1024+0xD800,u%1024+0xDC00)
+ end
+ ns = ns + 1
+ else
+ originals[index], tounicode[index] = 0xFFFD, "FFFD"
+ end
+ else
+ local as = { }
+ for l=1,#split do
+ local u = unicodes[split[l]]
+ if not u then
+ as[l], split[l] = 0xFFFD, "FFFD"
+ else
+ if type(u) == "table" then
+ u = u[1]
+ end
+ if u < 0x10000 then
+ as[l], split[l] = u, format("%04X",u)
+ else
+ as[l], split[l] = u, format("%04X%04X",u/1024+0xD800,u%1024+0xDC00)
+ end
+ end
+ end
+ split = concat(split)
+ if split ~= "" then
+ originals[index], tounicode[index] = as, split
+ nl = nl + 1
+ else
+ originals[index], tounicode[index] = 0xFFFD, "FFFD"
+ end
+ end
+ end
+ end
+ if trace_loading and (ns > 0 or nl > 0) then
+ logs.report("load otf","enhance: %s tounicode entries added (%s ligatures)",nl+ns, ns)
+ end
+end
+
+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
+ }
+ 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 and table.is_empty(data.glyphs) then
+ local cidinfo = data.cidinfo
+ local verbose = fonts.verbose
+ if cidinfo.registry then
+ local cidmap = fonts.cid.getmap and fonts.cid.getmap(cidinfo.registry,cidinfo.ordering,cidinfo.supplement)
+ if cidmap then
+ 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.map
+ 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 indeces 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
+ 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
+ end
+ end
+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 then
+ if #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
+ 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 then
+ if #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
+ 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
+
+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, data.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
+ 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
+ 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
+ for l=1,#lookups do
+ local lookup = lookups[l]
+ local maxfirsts, maxseconds = getn(firsts), getn(seconds)
+ if trace_loading then
+ logs.report("load otf", "adding kernclass %s with %s times %s pairs",lookup, maxfirsts, maxseconds)
+ end
+ for fk, fv in next, firsts do
+ for first in gmatch(fv,"[^ ]+") do
+ local first_unicode = unicodes[first]
+ if type(first_unicode) == "number" then
+ first_unicode = { first_unicode }
+ end
+ for f=1,#first_unicode do
+ local glyph = glyphs[mapmap[first_unicode[f]]]
+ 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 sk, sv in next, seconds do
+ local offset = offsets[(fk-1) * maxseconds + sk]
+ --~ local offset = offsets[sk] -- (fk-1) * maxseconds + sk]
+ for second in gmatch(sv,"[^ ]+") do
+ local second_unicode = unicodes[second]
+ if type(second_unicode) == "number" then
+ lookupkerns[second_unicode] = offset
+ else
+ for s=1,#second_unicode do
+ lookupkerns[second_unicode[s]] = offset
+ end
+ end
+ end
+ end
+ elseif trace_loading then
+ logs.report("load otf", "no glyph data for U+%04X", first_unicode[f])
+ 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
+ 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
+
+otf.enhancers["flatten glyph lookups"] = function(data,filename)
+ for k, v in next, data.glyphs do
+ if v.lookups then
+ for kk, vv in next, v.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["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, { "gsub", "gpos" } 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
+
+function otf.set_features(tfmdata,features)
+ local processes = { }
+ if not table.is_empty(features) then
+ local lists = {
+ 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]
+ 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)
+ if not tfmdata then
+ local otfdata = otf.load(filename,format,sub,features and features.featurefile)
+ if not table.is_empty(otfdata) then
+ otfdata.shared = otfdata.shared or {
+ featuredata = { },
+ anchorhash = { },
+ initialized = false,
+ }
+ tfmdata = otf.copy_to_tfm(otfdata)
+ if not table.is_empty(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 = { }
+ 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)
+
+function otf.copy_to_tfm(data) -- 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 tfm = {
+ characters = characters,
+ parameters = parameters,
+ math_parameters = math_parameters,
+ descriptions = descriptions,
+ indices = indices,
+ unicodes = unicodes,
+ }
+ -- indices maps from unicodes to indices
+ for u, i in next, indices do
+ local d = glyphs[i]
+ characters[u] = { } -- we need this because for instance we add protruding info
+ descriptions[u] = d
+ 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 could prepare the variants
+ if m then
+ local variants = m.horiz_variants
+ if variants then
+ local c = char
+ for n in variants:gmatch("[^ ]+") do
+ local un = unicodes[n]
+ if un and u ~= un then
+ c.next = un
+ c = characters[un]
+ end
+ end
+ c.horiz_variants = m.horiz_parts
+ else
+ local variants = m.vert_variants
+ if variants then
+ local c = char
+ for n in variants:gmatch("[^ ]+") do
+ local un = unicodes[n]
+ if un and u ~= un then
+ c.next = un
+ c = characters[un]
+ end
+ end
+ c.vert_variants = m.vert_parts
+ end
+ end
+ end
+ end
+ end
+ -- end math
+ local designsize = metadata.designsize or metadata.design_size or 100
+ if designsize == 0 then
+ designsize = 100
+ end
+ local spaceunits = 500
+ tfm.units = metadata.units_per_em or 1000
+ -- we need a runtime lookup because of running from cdrom or zip, brrr
+ tfm.filename = input.findbinfile(luatex.filename,"") or luatex.filename
+ tfm.fullname = metadata.fontname or metadata.fullname
+ tfm.encodingbytes = 2
+ tfm.cidinfo = data.cidinfo
+ tfm.cidinfo.registry = tfm.cidinfo.registry or ""
+ tfm.type = "real"
+ tfm.stretch = 0 -- stretch
+ tfm.slant = 0 -- slant
+ tfm.direction = 0
+ tfm.boundarychar_label = 0
+ tfm.boundarychar = 65536
+ tfm.designsize = (designsize/10)*65536
+ tfm.spacer = "500 units"
+ local endash, emdash = 0x20, 0x2014 -- unicodes['space'], unicodes['emdash']
+ if metadata.isfixedpitch then
+ if descriptions[endash] then
+ spaceunits, tfm.spacer = descriptions[endash].width, "space"
+ end
+ if not spaceunits and descriptions[emdash] then
+ spaceunits, tfm.spacer = descriptions[emdash].width, "emdash"
+ end
+ if not spaceunits and metadata.charwidth then
+ spaceunits, tfm.spacer = metadata.charwidth, "charwidth"
+ end
+ else
+ if descriptions[endash] then
+ spaceunits, tfm.spacer = descriptions[endash].width, "space"
+ end
+ if not spaceunits and descriptions[emdash] then
+ spaceunits, tfm.spacer = descriptions[emdash].width/2, "emdash/2"
+ end
+ if not spaceunits and metadata.charwidth then
+ spaceunits, tfm.spacer = metadata.charwidth, "charwidth"
+ end
+ end
+ spaceunits = tonumber(spaceunits) or tfm.units/2 -- 500 -- brrr
+ parameters.slant = 0
+ parameters.space = spaceunits
+ parameters.space_stretch = tfm.units/2 -- 500
+ -- parameters.space_shrink = 2*tfm.units/3 -- 333
+ parameters.space_shrink = 1*tfm.units/3 -- 333
+ -- parameters.x_height = 4*tfm.units/5 -- 400
+ parameters.x_height = 2*tfm.units/5 -- 400
+ parameters.quad = tfm.units -- 1000
+ parameters.extra_space = 0
+ if spaceunits < 2*tfm.units/5 then
+ -- todo: warning
+ end
+ local italicangle = metadata.italicangle
+ tfm.ascender = math.abs(metadata.ascent or 0)
+ tfm.descender = math.abs(metadata.descent or 0)
+ if italicangle then -- maybe also in afm _
+ tfm.italicangle = italicangle
+ 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
+ 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
+ -- [6]
+ return tfm
+ 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
+ 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)
+ -- here we resolve the name; file can be relocated, so this info is not in the cache
+ local filename = (otfdata and otfdata.luatex and otfdata.luatex.filename) or specification.filename
+ if not filename then
+ -- try to locate anyway and set otfdata.luatex.filename
+ end
+ if filename then
+ tfmtable.encodingbytes = 2
+ tfmtable.filename = input.findbinfile(filename,"") or filename
+ tfmtable.fullname = otfdata.metadata.fontname or otfdata.metadata.fullname
+ local order = otfdata and otfdata.metadata.order2
+ if order == 0 then
+ tfmtable.format = 'opentype'
+ elseif order == 1 then
+ tfmtable.format = 'truetype'
+ else
+ tfmtable.format = specification.format
+ end
+ tfmtable.name = tfmtable.filename or tfmtable.fullname
+ end
+ fonts.logger.save(tfmtable,file.extname(specification.filename),specification)
+ end
+ return tfmtable
+end
+
+local a_to_script = { } otf.a_to_script = a_to_script
+local a_to_language = { } otf.a_to_language = a_to_language
+
+otf.default_language = 'latn'
+otf.default_script = 'dflt'
+
+local context_setups = fonts.define.specify.context_setups
+local context_numbers = fonts.define.specify.context_numbers
+
+function otf.set_dynamics(font,dynamics,attribute)
+ features = context_setups[context_numbers[attribute]] -- can be moved to caller
+ if features then
+ local script = features.script or 'dflt'
+ local language = features.language or 'dflt'
+ local ds = dynamics[script]
+ if not ds then
+ ds = { }
+ dynamics[script] = ds
+ end
+ local dsl = ds[language]
+ if not dsl then
+ dsl = { }
+ ds[language] = dsl
+ end
+ local dsla = dsl[attribute]
+ if dsla then
+ -- if trace_dynamics then
+ -- logs.report("otf define","using dynamics %s: attribute %s, script %s, language %s",context_numbers[attribute],attribute,script,language)
+ -- end
+ return dsla
+ else
+ local tfmdata = fontdata[font]
+ a_to_script [attribute] = script
+ a_to_language[attribute] = language
+ -- we need to save some values
+ local saved = {
+ script = tfmdata.script,
+ language = tfmdata.language,
+ mode = tfmdata.mode,
+ features = tfmdata.shared.features
+ }
+ tfmdata.mode = "node"
+ tfmdata.language = language
+ tfmdata.script = script
+ tfmdata.shared.features = { }
+ -- end of save
+ dsla = otf.set_features(tfmdata,fonts.define.check(features,otf.features.default))
+ if trace_dynamics then
+ logs.report("otf define","setting dynamics %s: attribute %s, script %s, language %s",context_numbers[attribute],attribute,script,language)
+ end
+ -- we need to restore some values
+ tfmdata.script = saved.script
+ tfmdata.language = saved.language
+ tfmdata.mode = saved.mode
+ tfmdata.shared.features = saved.features
+ -- end of restore
+ dynamics[script][language][attribute] = dsla -- cache
+ return dsla
+ end
+ end
+ return nil -- { }
+end
+
+-- common stuff
+
+function otf.features.language(tfmdata,value)
+ if value then
+ value = lower(value)
+ if otf.tables.languages[value] then
+ tfmdata.language = value
+ end
+ end
+end
+
+function otf.features.script(tfmdata,value)
+ if value then
+ value = lower(value)
+ if otf.tables.scripts[value] then
+ tfmdata.script = value
+ end
+ end
+end
+
+function otf.features.mode(tfmdata,value)
+ if value then
+ tfmdata.mode = lower(value)
+ end
+end
+
+fonts.initializers.base.otf.language = otf.features.language
+fonts.initializers.base.otf.script = otf.features.script
+fonts.initializers.base.otf.mode = otf.features.mode
+fonts.initializers.base.otf.method = otf.features.mode
+
+fonts.initializers.node.otf.language = otf.features.language
+fonts.initializers.node.otf.script = otf.features.script
+fonts.initializers.node.otf.mode = otf.features.mode
+fonts.initializers.node.otf.method = otf.features.mode
+
+otf.features.register("features",true) -- we always do features
+table.insert(fonts.processors,"features") -- we need a proper function for doing this
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 06:19:01 +0000