diff options
Diffstat (limited to 'otfl-font-otf.lua')
| -rw-r--r-- | otfl-font-otf.lua | 2080 |
1 files changed, 0 insertions, 2080 deletions
diff --git a/otfl-font-otf.lua b/otfl-font-otf.lua deleted file mode 100644 index e1339ae..0000000 --- a/otfl-font-otf.lua +++ /dev/null @@ -1,2080 +0,0 @@ -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 --- ascent descent - --- more checking against low level calls of functions - -local utf = unicode.utf8 - -local utfbyte = 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 reversed, concat, remove = table.reversed, table.concat, table.remove -local ioflush = io.flush -local fastcopy, tohash, derivetable = table.fastcopy, table.tohash, table.derive - -local allocate = utilities.storage.allocate -local registertracker = trackers.register -local registerdirective = directives.register -local starttiming = statistics.starttiming -local stoptiming = statistics.stoptiming -local elapsedtime = statistics.elapsedtime -local findbinfile = resolvers.findbinfile - -local trace_private = false registertracker("otf.private", function(v) trace_private = v end) -local trace_loading = false registertracker("otf.loading", function(v) trace_loading = v end) -local trace_features = false registertracker("otf.features", function(v) trace_features = v end) -local trace_dynamics = false registertracker("otf.dynamics", function(v) trace_dynamics = v end) -local trace_sequences = false registertracker("otf.sequences", function(v) trace_sequences = v end) -local trace_markwidth = false registertracker("otf.markwidth", function(v) trace_markwidth = v end) -local trace_defining = false registertracker("fonts.defining", function(v) trace_defining = v end) - -local report_otf = logs.reporter("fonts","otf loading") - -local fonts = fonts -local otf = fonts.handlers.otf - -otf.glists = { "gsub", "gpos" } - -otf.version = 2.737 -- beware: also sync font-mis.lua -otf.cache = containers.define("fonts", "otf", otf.version, true) - -local fontdata = fonts.hashes.identifiers -local chardata = characters and characters.data -- not used - -local otffeatures = fonts.constructors.newfeatures("otf") -local registerotffeature = otffeatures.register - -local enhancers = allocate() -otf.enhancers = enhancers -local patches = { } -enhancers.patches = patches - -local definers = fonts.definers -local readers = fonts.readers -local constructors = fonts.constructors - -local forceload = false -local cleanup = 0 -- mk: 0=885M 1=765M 2=735M (regular run 730M) -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 - -registerdirective("fonts.otf.loader.cleanup", function(v) cleanup = tonumber(v) or (v and 1) or 0 end) -registerdirective("fonts.otf.loader.force", function(v) forceload = v end) -registerdirective("fonts.otf.loader.usemetatables", function(v) usemetatables = v end) -registerdirective("fonts.otf.loader.pack", function(v) packdata = v end) -registerdirective("fonts.otf.loader.syncspace", function(v) syncspace = v end) -registerdirective("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(rawdata,filename) - local sequences = rawdata.resources.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 = { } - if type(scripts) == "table" then - 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 - else - if trace_loading then - report_otf(" %s: %s",feature,tostring(scripts)) - end - 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 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", - "fontname", - "fontstyle_id", - "fontstyle_name", - "fullname", - -- "glyphs", - "hasvmetrics", - -- "head_optimized_for_cleartype", - "horiz_base", - "issans", - "isserif", - "italicangle", - -- "kerns", - -- "lookups", - "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", - "version", - "vert_base", - "weight", - "weight_width_slope_only", - -- "xuid", -} - -local ordered_enhancers = { - "prepare tables", - "prepare glyphs", - "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", - - "merge kern classes", - - "reorganize features", - "reorganize subtables", - - "check glyphs", - "check metadata", - "check extra features", -- after metadata - - "add duplicates", - "check encoding", - - "cleanup tables", -} - ---[[ldx-- -<p>Here we go.</p> ---ldx]]-- - -local actions = allocate() -local before = allocate() -local after = allocate() - -patches.before = before -patches.after = after - -local function enhance(name,data,filename,raw) - local enhancer = actions[name] - if enhancer then - if trace_loading then - report_otf("enhance: %s (%s)",name,filename) - ioflush() - end - enhancer(data,filename,raw) - elseif trace_loading then - -- report_otf("enhance: %s is undefined",name) - end -end - -function enhancers.apply(data,filename,raw) - local basename = file.basename(lower(filename)) - if trace_loading then - report_otf("start enhancing: %s",filename) - end - 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) - 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 - if trace_loading then - report_otf("stop enhancing") - end - ioflush() -- we want instant messages -end - --- patches.register("before","migrate metadata","cambria",function() end) - -function patches.register(what,where,pattern,action) - local pw = patches[what] - if pw then - local ww = pw[where] - if ww then - ww[pattern] = action - else - pw[where] = { [pattern] = action} - end - end -end - -function patches.report(fmt,...) - if trace_loading then - report_otf("patching: " ..fmt,...) - 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 = attr and attr.size or 0 - local time = 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 and attr.size or 0, - time = attr and 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.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 - 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 - local unicodes = { - -- names to unicodes - } - local splitter = lpeg.splitter(" ",unicodes) - data = { - size = size, - time = time, - format = format, - featuredata = featurefiles, - resources = { - filename = resolvers.unresolve(filename), -- no shortcut - version = otf.version, - creator = "context mkiv", - unicodes = unicodes, - indices = { - -- index to unicodes - }, - duplicates = { - -- alternative unicodes - }, - variants = { - -- alternative unicodes (variants) - }, - lookuptypes = { - }, - }, - metadata = { - -- raw metadata, not to be used - }, - properties = { - -- normalized metadata - }, - descriptions = { - }, - goodies = { - }, - helpers = { - tounicodelist = splitter, - tounicodetable = lpeg.Ct(splitter), - }, - } - starttiming(data) - report_otf("file size: %s", size) - enhancers.apply(data,filename,fontdata) - if packdata then - if cleanup > 0 then - collectgarbage("collect") ---~ lua.collectgarbage() - end - enhance("pack",data,filename,nil) - end - report_otf("saving in cache: %s",filename) - data = containers.write(otf.cache, hash, data) - if cleanup > 1 then - collectgarbage("collect") ---~ lua.collectgarbage() - end - stoptiming(data) - if elapsedtime then -- not in generic - report_otf("preprocessing and caching took %s seconds",elapsedtime(data)) - end - fontloader.close(fontdata) -- free memory - if cleanup > 3 then - collectgarbage("collect") ---~ lua.collectgarbage() - end - data = containers.read(otf.cache, hash) -- this frees the old table and load the sparse one - if cleanup > 2 then - collectgarbage("collect") ---~ lua.collectgarbage() - 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["prepare tables"] = function(data,filename,raw) - data.properties.hasitalics = false -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 descriptions = data.descriptions - local resources = data.resources - local defaultwidth = resources.defaultwidth or 0 - local defaultheight = resources.defaultheight or 0 - local defaultdepth = resources.defaultdepth or 0 - if usemetatables then - for _, d in next, descriptions do - local wd = d.width - if not wd then - d.width = defaultwidth - elseif trace_markwidth and wd ~= 0 and d.class == "mark" then - report_otf("mark with width %s (%s) in %s",wd,d.name or "<noname>",file.basename(filename)) - -- d.width = -wd - end - setmetatable(d,mt) - end - else - for _, d in next, descriptions do - local bb, wd = d.boundingbox, d.width - if not wd then - d.width = defaultwidth - elseif trace_markwidth and wd ~= 0 and d.class == "mark" then - report_otf("mark with width %s (%s) in %s",wd,d.name or "<noname>",file.basename(filename)) - -- 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 - -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 hasitalics and class (when nil) during --- table cronstruction can save some mem - -actions["prepare glyphs"] = function(data,filename,raw) - local rawglyphs = raw.glyphs - local rawsubfonts = raw.subfonts - local rawcidinfo = raw.cidinfo - local criterium = constructors.privateoffset - local private = criterium - local resources = data.resources - local metadata = data.metadata - local properties = data.properties - local descriptions = data.descriptions - local unicodes = resources.unicodes -- name to unicode - local indices = resources.indices -- index to unicode - local duplicates = resources.duplicates - local variants = resources.variants - - if rawsubfonts then - - metadata.subfonts = { } - properties.cidinfo = rawcidinfo - - if rawcidinfo.registry then - local cidmap = fonts.cid.getmap(rawcidinfo) - if cidmap then - rawcidinfo.usedname = cidmap.usedname - local nofnames, nofunicodes = 0, 0 - local cidunicodes, cidnames = cidmap.unicodes, cidmap.names - for cidindex=1,#rawsubfonts do - local subfont = rawsubfonts[cidindex] - local cidglyphs = subfont.glyphs - metadata.subfonts[cidindex] = somecopy(subfont) - for index=0,subfont.glyphcnt-1 do -- we could take the previous glyphcnt instead of 0 - local glyph = cidglyphs[index] - if glyph then - local unicode = glyph.unicode - local name = glyph.name or cidnames[index] - if not unicode or unicode == -1 or unicode >= criterium then - unicode = cidunicodes[index] - end - if not unicode or unicode == -1 or unicode >= criterium then - if not name then - name = format("u%06X",private) - end - unicode = private - unicodes[name] = private - if trace_private then - report_otf("enhance: glyph %s at index 0x%04X is moved to private unicode slot U+%05X",name,index,private) - end - private = private + 1 - nofnames = nofnames + 1 - else - if not name then - name = format("u%06X",unicode) - end - unicodes[name] = unicode - nofunicodes = nofunicodes + 1 - end - indices[index] = unicode -- each index is unique (at least now) - - local description = { - -- width = glyph.width, - boundingbox = glyph.boundingbox, - name = glyph.name or name or "unknown", -- uniXXXX - cidindex = cidindex, - index = index, - glyph = glyph, - } - - descriptions[unicode] = description - else - -- report_otf("potential problem: glyph 0x%04X is used but empty",index) - end - end - end - if trace_loading then - report_otf("cid font remapped, %s unicode points, %s symbolic names, %s glyphs",nofunicodes, nofnames, nofunicodes+nofnames) - end - elseif trace_loading then - report_otf("unable to remap cid font, missing cid file for %s",filename) - end - elseif trace_loading then - report_otf("font %s has no glyphs",filename) - end - - else - - for index=0,raw.glyphcnt-1 do -- not raw.glyphmax-1 (as that will crash) - local glyph = rawglyphs[index] - if glyph then - local unicode = glyph.unicode - local name = glyph.name - if not unicode or unicode == -1 or unicode >= criterium then - unicode = private - unicodes[name] = private - if trace_private then - report_otf("enhance: glyph %s at index 0x%04X is moved to private unicode slot U+%05X",name,index,private) - end - private = private + 1 - else - unicodes[name] = unicode - end - indices[index] = unicode - if not name then - name = format("u%06X",unicode) - end - descriptions[unicode] = { - -- width = glyph.width, - boundingbox = glyph.boundingbox, - name = name, - index = index, - glyph = glyph, - } - local altuni = glyph.altuni - if altuni then - local d - for i=1,#altuni do - local a = altuni[i] - local u = a.unicode - local v = a.variant - if v then - local vv = variants[v] - if vv then - vv[u] = unicode - else -- xits-math has some: - vv = { [u] = unicode } - variants[v] = vv - end - elseif d then - d[#d+1] = u - else - d = { u } - end - end - if d then - duplicates[unicode] = d - end - end - else - report_otf("potential problem: glyph 0x%04X is used but empty",index) - end - end - - end - - resources.private = private - -end - --- the next one is still messy but will get better when we have --- flattened map/enc tables in the font loader - -actions["check encoding"] = function(data,filename,raw) - local descriptions = data.descriptions - local resources = data.resources - local properties = data.properties - local unicodes = resources.unicodes -- name to unicode - local indices = resources.indices -- index to unicodes - - -- begin of messy (not needed when cidmap) - - local mapdata = raw.map or { } - local unicodetoindex = mapdata and mapdata.map or { } - -- local encname = lower(data.enc_name or raw.enc_name or mapdata.enc_name or "") - local encname = lower(data.enc_name or mapdata.enc_name or "") - local criterium = 0xFFFF -- for instance cambria has a lot of mess up there - - -- end of messy - - if find(encname,"unicode") then -- unicodebmp, unicodefull, ... - if trace_loading then - report_otf("checking embedded unicode map '%s'",encname) - end - for unicode, index in next, unicodetoindex do -- altuni already covers this - if unicode <= criterium and not descriptions[unicode] then - local parent = indices[index] -- why nil? - if parent then - report_otf("weird, unicode U+%05X points to U+%05X with index 0x%04X",unicode,parent,index) - else - report_otf("weird, unicode U+%05X points to nowhere with index 0x%04X",unicode,index) - end - end - end - elseif properties.cidinfo then - report_otf("warning: no unicode map, used cidmap '%s'",properties.cidinfo.usedname or "?") - else - report_otf("warning: non unicode map '%s', only using glyph unicode data",encname or "whatever") - end - - if mapdata then - mapdata.map = { } -- clear some memory - end -end - --- for the moment we assume that a fotn with lookups will not use --- altuni so we stick to kerns only - -actions["add duplicates"] = function(data,filename,raw) - local descriptions = data.descriptions - local resources = data.resources - local properties = data.properties - local unicodes = resources.unicodes -- name to unicode - local indices = resources.indices -- index to unicodes - local duplicates = resources.duplicates - - for unicode, d in next, duplicates do - for i=1,#d do - local u = d[i] - if not descriptions[u] then - local description = descriptions[unicode] - local duplicate = table.copy(description) -- else packing problem - duplicate.comment = format("copy of U+%05X", unicode) - descriptions[u] = duplicate - local n = 0 - for _, description in next, descriptions do - if kerns then - local kerns = description.kerns - for _, k in next, kerns do - local ku = k[unicode] - if ku then - k[u] = ku - n = n + 1 - end - end - end - -- todo: lookups etc - end - if trace_loading then - report_otf("duplicating U+%05X to U+%05X with index 0x%04X (%s kerns)",unicode,u,description.index,n) - end - end - end - end -end - --- class : nil base mark ligature component (maybe we don't need it in description) --- boundingbox: split into ht/dp takes more memory (larger tables and less sharing) - -actions["analyze glyphs"] = function(data,filename,raw) -- maybe integrate this in the previous - local descriptions = data.descriptions - local resources = data.resources - local metadata = data.metadata - local properties = data.properties - local hasitalics = false - local widths = { } - local marks = { } -- always present (saves checking) - for unicode, description in next, descriptions do - local glyph = description.glyph - local italic = glyph.italic_correction - if not italic then - -- skip - elseif italic == 0 then - -- skip - else - description.italic = italic - hasitalics = true - end - local width = glyph.width - widths[width] = (widths[width] or 0) + 1 - local class = glyph.class - if class then - if class == "mark" then - marks[unicode] = true - end - description.class = class - end - end - -- flag italic - properties.hasitalics = hasitalics - -- flag marks - resources.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 unicode, description in next, descriptions do - if description.width == wd then - -- description.width = nil - else - description.width = description.glyph.width - end - end - resources.defaultwidth = wd - else - for unicode, description in next, descriptions do - description.width = description.glyph.width - end - end -end - -actions["reorganize mark classes"] = function(data,filename,raw) - local mark_classes = raw.mark_classes - if mark_classes then - local resources = data.resources - local unicodes = resources.unicodes - local markclasses = { } - resources.markclasses = markclasses -- reversed - for name, class in next, mark_classes do - local t = { } - for s in gmatch(class,"[^ ]+") do - t[unicodes[s]] = true - end - markclasses[name] = t - end - end -end - -actions["reorganize features"] = function(data,filename,raw) -- combine with other - local features = { } - data.resources.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 resources = data.resources - local anchor_to_lookup = { } - local lookup_to_anchor = { } - resources.anchor_to_lookup = anchor_to_lookup - resources.lookup_to_anchor = lookup_to_anchor - local classes = raw.anchor_classes -- anchor classes not in final table - 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 l then - l[anchor] = true - else - l = { [anchor] = true } - lookup_to_anchor[lookup] = l - end - a[lookup] = true - end - end - end -end - -actions["prepare tounicode"] = function(data,filename,raw) - fonts.mappings.addtounicode(data,filename) -end - -local g_directions = { - gsub_contextchain = 1, - gpos_contextchain = 1, - -- gsub_context = 1, - -- gpos_context = 1, - gsub_reversecontextchain = -1, - gpos_reversecontextchain = -1, -} - --- Research by Khaled Hosny has demonstrated that the font loader merges --- regular and AAT features and that these can interfere (especially because --- we dropped checking for valid features elsewhere. So, we just check for --- the special flag and drop the feature if such a tag is found. - -local function supported(features) - for i=1,#features do - if features[i].ismac then - return false - end - end - return true -end - -actions["reorganize subtables"] = function(data,filename,raw) - local resources = data.resources - local sequences = { } - local lookups = { } - local chainedfeatures = { } - resources.sequences = sequences - resources.lookups = 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 features = gk.features --- if features and supported(features) then - if not features or supported(features) then -- not always features ! - local typ = gk.type - local chain = g_directions[typ] or 0 - local subtables = gk.subtables - if subtables then - local t = { } - for s=1,#subtables do - t[s] = subtables[s].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 = resources.markclasses[markclass] - end - flags = t - end - -- - local name = gk.name - -- - 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 -end - --- test this: --- --- for _, what in next, otf.glists do --- raw[what] = nil --- end - -actions["prepare lookups"] = function(data,filename,raw) - local lookups = raw.lookups - if lookups then - data.lookups = lookups - end -end - --- The reverse handler does a bit redundant splitting but it's seldom --- seen so we don' tbother too much. We could store the replacement --- in the current list (value instead of true) but it makes other code --- uglier. Maybe some day. - -local function t_uncover(splitter,cache,covers) - local result = { } - for n=1,#covers do - local cover = covers[n] - local uncovered = cache[cover] - if not uncovered then - uncovered = lpegmatch(splitter,cover) - cache[cover] = uncovered - end - result[n] = uncovered - end - return result -end - -local function t_hashed(t,cache) - if t then - local ht = { } - for i=1,#t do - local ti = t[i] - local tih = cache[ti] - if not tih then - tih = { } - for i=1,#ti do - tih[ti[i]] = true - end - cache[ti] = tih - end - ht[i] = tih - end - return ht - else - return nil - end -end - -local function s_uncover(splitter,cache,cover) - if cover == "" then - return nil - else - local uncovered = cache[cover] - if not uncovered then - uncovered = lpegmatch(splitter,cover) - for i=1,#uncovered do - uncovered[i] = { [uncovered[i]] = true } - end - cache[cover] = uncovered - end - return uncovered - end -end - -local s_hashed = t_hashed - -local function r_uncover(splitter,cache,cover,replacements) - if cover == "" then - return nil - else - -- we always have current as { } even in the case of one - local uncovered = cover[1] - local replaced = cache[replacements] - if not replaced then - replaced = lpegmatch(splitter,replacements) - cache[replacements] = replaced - end - local nu, nr = #uncovered, #replaced - local r = { } - if nu == nr then - for i=1,nu do - r[uncovered[i]] = replaced[i] - end - end - return r - end -end - -actions["reorganize lookups"] = function(data,filename,raw) - -- we prefer the before lookups in a normal order - if data.lookups then - local splitter = data.helpers.tounicodetable - local cache, h_cache = { }, { } - for _, lookup in next, data.lookups do - local rules = lookup.rules - if rules then - local format = lookup.format - if format == "class" then - local before_class = lookup.before_class - if before_class then - before_class = t_uncover(splitter,cache,reversed(before_class)) - end - local current_class = lookup.current_class - if current_class then - current_class = t_uncover(splitter,cache,current_class) - end - local after_class = lookup.after_class - if after_class then - after_class = t_uncover(splitter,cache,after_class) - end - for i=1,#rules do - local rule = rules[i] - local class = rule.class - local before = class.before - if before then - for i=1,#before do - before[i] = before_class[before[i]] or { } - end - rule.before = t_hashed(before,h_cache) - end - local current = class.current - local lookups = rule.lookups - if current then - for i=1,#current do - current[i] = current_class[current[i]] or { } - if lookups and not lookups[i] then - lookups[i] = false -- e.g. we can have two lookups and one replacement - end - end - rule.current = t_hashed(current,h_cache) - end - local after = class.after - if after then - for i=1,#after do - after[i] = after_class[after[i]] or { } - end - rule.after = t_hashed(after,h_cache) - end - rule.class = nil - end - lookup.before_class = nil - lookup.current_class = nil - lookup.after_class = nil - lookup.format = "coverage" - elseif format == "coverage" then - for i=1,#rules do - local rule = rules[i] - local coverage = rule.coverage - if coverage then - local before = coverage.before - if before then - before = t_uncover(splitter,cache,reversed(before)) - rule.before = t_hashed(before,h_cache) - end - local current = coverage.current - if current then - current = t_uncover(splitter,cache,current) - rule.current = t_hashed(current,h_cache) - end - local after = coverage.after - if after then - after = t_uncover(splitter,cache,after) - rule.after = t_hashed(after,h_cache) - end - rule.coverage = nil - end - end - elseif format == "reversecoverage" then -- special case, single substitution only - for i=1,#rules do - local rule = rules[i] - local reversecoverage = rule.reversecoverage - if reversecoverage then - local before = reversecoverage.before - if before then - before = t_uncover(splitter,cache,reversed(before)) - rule.before = t_hashed(before,h_cache) - end - local current = reversecoverage.current - if current then - current = t_uncover(splitter,cache,current) - rule.current = t_hashed(current,h_cache) - end - local after = reversecoverage.after - if after then - after = t_uncover(splitter,cache,after) - rule.after = t_hashed(after,h_cache) - end - local replacements = reversecoverage.replacements - if replacements then - rule.replacements = r_uncover(splitter,cache,current,replacements) - end - rule.reversecoverage = nil - end - end - elseif format == "glyphs" then - for i=1,#rules do - local rule = rules[i] - local glyphs = rule.glyphs - if glyphs then - local fore = glyphs.fore - if fore then - fore = s_uncover(splitter,cache,fore) - rule.before = s_hashed(fore,h_cache) - end - local back = glyphs.back - if back then - back = s_uncover(splitter,cache,back) - rule.after = s_hashed(back,h_cache) - end - local names = glyphs.names - if names then - names = s_uncover(splitter,cache,names) - rule.current = s_hashed(names,h_cache) - end - rule.glyphs = nil - end - end - end - end - end - end -end - -local function check_variants(unicode,the_variants,splitter,unicodes) - local variants = the_variants.variants - if variants then -- use splitter - local glyphs = lpegmatch(splitter,variants) - local done = { [unicode] = true } - local n = 0 - for i=1,#glyphs do - local g = glyphs[i] - if done[g] then - report_otf("skipping cyclic reference U+%05X in math variant U+%05X",g,unicode) - else - if n == 0 then - n = 1 - variants = { g } - else - n = n + 1 - variants[n] = g - end - done[g] = true - end - end - if n == 0 then - variants = nil - end - end - local parts = the_variants.parts - if parts then - local p = #parts - if p > 0 then - for i=1,p do - local pi = parts[i] - pi.glyph = unicodes[pi.component] or 0 - pi.component = nil - end - else - parts = nil - end - end - local italic_correction = the_variants.italic_correction - if italic_correction and italic_correction == 0 then - italic_correction = nil - end - return variants, parts, italic_correction -end - -actions["analyze math"] = function(data,filename,raw) - if raw.math then - data.metadata.math = raw.math - local unicodes = data.resources.unicodes - local splitter = data.helpers.tounicodetable - for unicode, description in next, data.descriptions do - local glyph = description.glyph - local mathkerns = glyph.mathkern -- singular - local horiz_variants = glyph.horiz_variants - local vert_variants = glyph.vert_variants - local top_accent = glyph.top_accent - if mathkerns or horiz_variants or vert_variants or top_accent then - local math = { } - if top_accent then - math.top_accent = top_accent - end - if mathkerns then - for k, v in next, mathkerns do - if not next(v) then - mathkerns[k] = nil - else - for k, v in next, v do - if v == 0 then - k[v] = nil -- height / kern can be zero - end - end - end - end - math.kerns = mathkerns - end - if horiz_variants then - math.horiz_variants, math.horiz_parts, math.horiz_italic_correction = check_variants(unicode,horiz_variants,splitter,unicodes) - end - if vert_variants then - math.vert_variants, math.vert_parts, math.vert_italic_correction = check_variants(unicode,vert_variants,splitter,unicodes) - end - local italic_correction = description.italic - if italic_correction and italic_correction ~= 0 then - math.italic_correction = italic_correction - end - description.math = math - end - end - end -end - -actions["reorganize glyph kerns"] = function(data,filename,raw) - local descriptions = data.descriptions - local resources = data.resources - local unicodes = resources.unicodes - for unicode, description in next, descriptions do - local kerns = description.glyph.kerns - if kerns then - local newkerns = { } - for k, kern in next, kerns do - local name = kern.char - local offset = kern.off - local lookup = kern.lookup - if name and offset and lookup then - local unicode = unicodes[name] - if unicode then - if type(lookup) == "table" then - for l=1,#lookup do - local lookup = lookup[l] - local lookupkerns = newkerns[lookup] - if lookupkerns then - lookupkerns[unicode] = offset - else - newkerns[lookup] = { [unicode] = offset } - end - end - else - local lookupkerns = newkerns[lookup] - if lookupkerns then - lookupkerns[unicode] = offset - else - newkerns[lookup] = { [unicode] = offset } - end - end - elseif trace_loading then - report_otf("problems with unicode %s of kern %s of glyph U+%05X",name,k,unicode) - end - end - end - description.kerns = newkerns - end - end -end - -actions["merge kern classes"] = function(data,filename,raw) - local gposlist = raw.gpos - if gposlist then - local descriptions = data.descriptions - local resources = data.resources - local unicodes = resources.unicodes - local splitter = data.helpers.tounicodetable - for gp=1,#gposlist do - local gpos = gposlist[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 = kcl.firsts - local seconds = kcl.seconds - local offsets = kcl.offsets - local lookups = kcl.lookup -- singular - if type(lookups) ~= "table" then - lookups = { lookups } - end - -- we can check the max in the loop - -- local maxseconds = getn(seconds) - for n, s in next, firsts do - split[s] = split[s] or lpegmatch(splitter,s) - end - local maxseconds = 0 - for n, s in next, seconds do - if n > maxseconds then - maxseconds = n - end - split[s] = split[s] or lpegmatch(splitter,s) - end - for l=1,#lookups do - local lookup = lookups[l] - for fk=1,#firsts do -- maxfirsts ? - local fv = firsts[fk] - local splt = split[fv] - if splt then - local extrakerns = { } - local baseoffset = (fk-1) * maxseconds - -- for sk=2,maxseconds do - -- local sv = seconds[sk] - for sk, sv in next, seconds do - local splt = split[sv] - if splt then -- redundant test - local offset = offsets[baseoffset + sk] - if offset then - for i=1,#splt do - extrakerns[splt[i]] = offset - end - end - end - end - for i=1,#splt do - local first_unicode = splt[i] - local description = descriptions[first_unicode] - if description then - local kerns = description.kerns - if not kerns then - kerns = { } -- unicode indexed ! - description.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+%05X", first_unicode) - end - end - end - end - end - end - subtable.kernclass = { } - end - end - end - end - end -end - -actions["check glyphs"] = function(data,filename,raw) - for unicode, description in next, data.descriptions do - description.glyph = nil - end -end - --- future versions will remove _ - -actions["check metadata"] = function(data,filename,raw) - local metadata = data.metadata - for _, k in next, mainfields do - if valid_fields[k] then - local v = raw[k] - if not metadata[k] then - metadata[k] = v - end - end - end - -- metadata.pfminfo = raw.pfminfo -- not already done? - local ttftables = metadata.ttf_tables - if ttftables then - for i=1,#ttftables do - ttftables[i].data = "deleted" - end - end -end - -actions["cleanup tables"] = function(data,filename,raw) - data.resources.indices = nil -- not needed - data.helpers = nil -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). - --- we can share { } as it is never set - ---- ligatures have an extra specification.char entry that we don't use - -actions["reorganize glyph lookups"] = function(data,filename,raw) - local resources = data.resources - local unicodes = resources.unicodes - local descriptions = data.descriptions - local splitter = data.helpers.tounicodelist - - local lookuptypes = resources.lookuptypes - - for unicode, description in next, descriptions do - local lookups = description.glyph.lookups - if lookups then - for tag, lookuplist in next, lookups do - for l=1,#lookuplist do - local lookup = lookuplist[l] - local specification = lookup.specification - local lookuptype = lookup.type - local lt = lookuptypes[tag] - if not lt then - lookuptypes[tag] = lookuptype - elseif lt ~= lookuptype then - report_otf("conflicting lookuptypes: %s => %s and %s",tag,lt,lookuptype) - end - if lookuptype == "ligature" then - lookuplist[l] = { lpegmatch(splitter,specification.components) } - elseif lookuptype == "alternate" then - lookuplist[l] = { lpegmatch(splitter,specification.components) } - elseif lookuptype == "substitution" then - lookuplist[l] = unicodes[specification.variant] - elseif lookuptype == "multiple" then - lookuplist[l] = { lpegmatch(splitter,specification.components) } - elseif lookuptype == "position" then - lookuplist[l] = { - specification.x or 0, - specification.y or 0, - specification.h or 0, - specification.v or 0 - } - elseif lookuptype == "pair" then - local one = specification.offsets[1] - local two = specification.offsets[2] - local paired = unicodes[specification.paired] - if one then - if two then - lookuplist[l] = { 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 - lookuplist[l] = { paired, { one.x or 0, one.y or 0, one.h or 0, one.v or 0 } } - end - else - if two then - lookuplist[l] = { paired, { }, { two.x or 0, two.y or 0, two.h or 0, two.v or 0} } -- maybe nil instead of { } - else - lookuplist[l] = { paired } - end - end - end - end - end - local slookups, mlookups - for tag, lookuplist in next, lookups do - if #lookuplist == 1 then - if slookups then - slookups[tag] = lookuplist[1] - else - slookups = { [tag] = lookuplist[1] } - end - else - if mlookups then - mlookups[tag] = lookuplist - else - mlookups = { [tag] = lookuplist } - end - end - end - if slookups then - description.slookups = slookups - end - if mlookups then - description.mlookups = mlookups - end - end - end - -end - -actions["reorganize glyph anchors"] = function(data,filename,raw) -- when we replace inplace we safe entries - local descriptions = data.descriptions - for unicode, description in next, descriptions do - local anchors = description.glyph.anchors - if anchors then - for class, data in next, anchors do - if class == "baselig" then - for tag, specification in next, data do - for i=1,#specification do - local si = specification[i] - specification[i] = { si.x or 0, si.y or 0 } - end - end - else - for tag, specification in next, data do - data[tag] = { specification.x or 0, specification.y or 0 } - end - end - end - description.anchors = anchors - end - end -end - --- modes: node, base, none - -function otf.setfeatures(tfmdata,features) - local okay = constructors.initializefeatures("otf",tfmdata,features,trace_features,report_otf) - if okay then - return constructors.collectprocessors("otf",tfmdata,features,trace_features,report_otf) - else - return { } -- will become false - end -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 --- --- we already assing an empty tabel to characters as we can add for --- instance protruding info and loop over characters; one is not supposed --- to change descriptions and if one does so one should make a copy! - -local function copytotfm(data,cache_id) - if data then - local metadata = data.metadata - local resources = data.resources - local properties = derivetable(data.properties) - local descriptions = derivetable(data.descriptions) - local goodies = derivetable(data.goodies) - local characters = { } - local parameters = { } - local mathparameters = { } - -- - local pfminfo = metadata.pfminfo or { } - local resources = data.resources - local unicodes = resources.unicodes - -- local mode = data.mode or "base" - local spaceunits = 500 - local spacer = "space" - local designsize = metadata.designsize or metadata.design_size or 100 - local mathspecs = metadata.math - -- - if designsize == 0 then - designsize = 100 - end - if mathspecs then - for name, value in next, mathspecs do - mathparameters[name] = value - end - end - for unicode, _ in next, data.descriptions do -- use parent table - characters[unicode] = { } - end - if mathspecs then - -- we could move this to the scaler but not that much is saved - -- and this is cleaner - for unicode, character in next, characters do - local d = descriptions[unicode] - local m = d.math - if m then - -- watch out: luatex uses horiz_variants for the parts - local variants = m.horiz_variants - local parts = m.horiz_parts - -- local done = { [unicode] = true } - if variants then - local c = character - for i=1,#variants do - local un = variants[i] - -- if done[un] then - -- -- report_otf("skipping cyclic reference U+%05X in math variant U+%05X",un,unicode) - -- else - c.next = un - c = characters[un] - -- done[un] = true - -- end - end -- c is now last in chain - c.horiz_variants = parts - elseif parts then - character.horiz_variants = parts - end - local variants = m.vert_variants - local parts = m.vert_parts - -- local done = { [unicode] = true } - if variants then - local c = character - for i=1,#variants do - local un = variants[i] - -- if done[un] then - -- -- report_otf("skipping cyclic reference U+%05X in math variant U+%05X",un,unicode) - -- else - c.next = un - c = characters[un] - -- done[un] = true - -- end - end -- c is now last in chain - c.vert_variants = parts - elseif parts then - character.vert_variants = parts - end - local italic_correction = m.vert_italic_correction - if italic_correction then - character.vert_italic_correction = italic_correction -- was c. - end - local top_accent = m.top_accent - if top_accent then - character.top_accent = top_accent - end - local kerns = m.kerns - if kerns then - character.mathkerns = kerns - end - end - end - end - -- end math - local monospaced = metadata.isfixedpitch or (pfminfo.panose and pfminfo.panose.proportion == "Monospaced") - local charwidth = pfminfo.avgwidth -- or unset - local italicangle = metadata.italicangle - local charxheight = pfminfo.os2_xheight and pfminfo.os2_xheight > 0 and pfminfo.os2_xheight - properties.monospaced = monospaced - parameters.italicangle = italicangle - parameters.charwidth = charwidth - parameters.charxheight = charxheight - -- - local space = 0x0020 -- unicodes['space'], unicodes['emdash'] - local emdash = 0x2014 -- unicodes['space'], unicodes['emdash'] - if monospaced then - if descriptions[space] then - spaceunits, spacer = descriptions[space].width, "space" - end - if not spaceunits and descriptions[emdash] then - spaceunits, spacer = descriptions[emdash].width, "emdash" - end - if not spaceunits and charwidth then - spaceunits, spacer = charwidth, "charwidth" - end - else - if descriptions[space] then - spaceunits, spacer = descriptions[space].width, "space" - end - if not spaceunits and descriptions[emdash] then - spaceunits, spacer = descriptions[emdash].width/2, "emdash/2" - end - if not spaceunits and charwidth then - spaceunits, spacer = charwidth, "charwidth" - end - end - spaceunits = tonumber(spaceunits) or 500 -- brrr - -- we need a runtime lookup because of running from cdrom or zip, brrr (shouldn't we use the basename then?) - local filename = constructors.checkedfilename(resources) - local fontname = metadata.fontname - local fullname = metadata.fullname or fontname - local units = metadata.units_per_em or 1000 - -- - if units == 0 then -- catch bugs in fonts - units = 1000 - metadata.units_per_em = 1000 - end - -- - 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 - if italicangle then - parameters.italicangle = italicangle - parameters.italicfactor = math.cos(math.rad(90+italicangle)) - parameters.slant = - math.round(math.tan(italicangle*math.pi/180)) - end - if monospaced 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 charxheight then - parameters.x_height = charxheight - else - local x = 0x78 -- unicodes['x'] - if x then - local x = descriptions[x] - if x then - parameters.x_height = x.height - end - end - end - -- - parameters.designsize = (designsize/10)*65536 - parameters.ascender = abs(metadata.ascent or 0) - parameters.descender = abs(metadata.descent or 0) - parameters.units = units - -- - properties.space = spacer - properties.encodingbytes = 2 - properties.format = data.format or fonts.formats[filename] or "opentype" - properties.noglyphnames = true - properties.filename = filename - properties.fontname = fontname - properties.fullname = fullname - properties.psname = fontname or fullname - properties.name = filename or fullname - -- - -- properties.name = specification.name - -- properties.sub = specification.sub - return { - characters = characters, - descriptions = descriptions, - parameters = parameters, - mathparameters = mathparameters, - resources = resources, - properties = properties, - goodies = goodies, - } - end -end - -local function otftotfm(specification) - local cache_id = specification.hash - local tfmdata = containers.read(constructors.cache,cache_id) - if not tfmdata then - local name = specification.name - local sub = specification.sub - local filename = specification.filename - local format = specification.format - local features = specification.features.normal - local rawdata = otf.load(filename,format,sub,features and features.featurefile) - if rawdata and next(rawdata) then - rawdata.lookuphash = { } - tfmdata = copytotfm(rawdata,cache_id) - if tfmdata and next(tfmdata) then - -- at this moment no characters are assigned yet, only empty slots - local features = constructors.checkedfeatures("otf",features) - local shared = tfmdata.shared - if not shared then - shared = { } - tfmdata.shared = shared - end - shared.rawdata = rawdata - -- shared.features = features -- default - shared.dynamics = { } - -- shared.processes = { } - tfmdata.changed = { } - shared.features = features - shared.processes = otf.setfeatures(tfmdata,features) - end - end - containers.write(constructors.cache,cache_id,tfmdata) - end - return tfmdata -end - -local function read_from_otf(specification) - local tfmdata = otftotfm(specification) - if tfmdata then - -- this late ? .. needs checking - tfmdata.properties.name = specification.name - tfmdata.properties.sub = specification.sub - -- - tfmdata = constructors.scale(tfmdata,specification) - local allfeatures = tfmdata.shared.features or specification.features.normal - constructors.applymanipulators("otf",tfmdata,allfeatures,trace_features,report_otf) - constructors.setname(tfmdata,specification) -- only otf? - fonts.loggers.register(tfmdata,file.extname(specification.filename),specification) - end - return tfmdata -end - -local function checkmathsize(tfmdata,mathsize) - local mathdata = tfmdata.shared.rawdata.metadata.math - local mathsize = tonumber(mathsize) - if mathdata then -- we cannot use mathparameters as luatex will complain - local parameters = tfmdata.parameters - parameters.scriptpercentage = mathdata.ScriptPercentScaleDown - parameters.scriptscriptpercentage = mathdata.ScriptScriptPercentScaleDown - parameters.mathsize = mathsize - end -end - -registerotffeature { - name = "mathsize", - description = "apply mathsize as specified in the font", - initializers = { - base = checkmathsize, - node = checkmathsize, - } -} - --- helpers - -function otf.collectlookups(rawdata,kind,script,language) - local sequences = rawdata.resources.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 - --- readers - -local function check_otf(forced,specification,suffix,what) - local name = specification.name - if forced then - name = file.addsuffix(name,suffix,true) - end - local fullname = findbinfile(name,suffix) or "" - if fullname == "" then - fullname = fonts.names.getfilename(name,suffix) or "" - end - if fullname ~= "" then - specification.filename = fullname - specification.format = what - return read_from_otf(specification) - end -end - -local function opentypereader(specification,suffix,what) - local forced = specification.forced or "" - if forced == "otf" then - return check_otf(true,specification,forced,"opentype") - elseif forced == "ttf" or forced == "ttc" or forced == "dfont" then - return check_otf(true,specification,forced,"truetype") - else - return check_otf(false,specification,suffix,what) - end -end - -readers.opentype = opentypereader - -local formats = fonts.formats - -formats.otf = "opentype" -formats.ttf = "truetype" -formats.ttc = "truetype" -formats.dfont = "truetype" - -function readers.otf (specification) return opentypereader(specification,"otf",formats.otf ) end -function readers.ttf (specification) return opentypereader(specification,"ttf",formats.ttf ) end -function readers.ttc (specification) return opentypereader(specification,"ttf",formats.ttc ) end -function readers.dfont(specification) return opentypereader(specification,"ttf",formats.dfont) end - --- this will be overloaded - -function otf.scriptandlanguage(tfmdata,attr) - local properties = tfmdata.properties - return properties.script or "dflt", properties.language or "dflt" -end |