diff options
Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkxl/font-map.lmt')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkxl/font-map.lmt | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkxl/font-map.lmt b/Master/texmf-dist/tex/context/base/mkxl/font-map.lmt new file mode 100644 index 00000000000..be132138453 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkxl/font-map.lmt @@ -0,0 +1,518 @@ +if not modules then modules = { } end modules ['font-map'] = { + version = 1.001, + optimize = true, + comment = "companion to font-ini.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +local tonumber, next, type = tonumber, next, type + +local match, format, find, concat, gsub, lower = string.match, string.format, string.find, table.concat, string.gsub, string.lower +local P, R, S, C, Ct, Cc, lpegmatch = lpeg.P, lpeg.R, lpeg.S, lpeg.C, lpeg.Ct, lpeg.Cc, lpeg.match +local formatters = string.formatters +local sortedhash, sortedkeys = table.sortedhash, table.sortedkeys + +local trace_loading = false trackers.register("fonts.loading", function(v) trace_loading = v end) +local trace_mapping = false trackers.register("fonts.mapping", function(v) trace_mapping = v end) + +local report_fonts = logs.reporter("fonts","loading") -- not otf only + +-- force_ligatures was true for a while so that these emoji's with bad names work too + +local force_ligatures = false directives.register("fonts.mapping.forceligatures",function(v) force_ligatures = v end) + +local fonts = fonts or { } +local mappings = fonts.mappings or { } +fonts.mappings = mappings + +local allocate = utilities.storage.allocate + +local hex = R("AF","af","09") +local hexfour = (hex*hex*hex^-2) / function(s) return tonumber(s,16) end +local hexsix = (hex*hex*hex^-4) / function(s) return tonumber(s,16) end +local dec = (R("09")^1) / tonumber +local period = P(".") +local unicode = (P("uni") + P("UNI")) * (hexfour * (period + P(-1)) * Cc(false) + Ct(hexfour^1) * Cc(true)) -- base planes +local ucode = (P("u") + P("U") ) * (hexsix * (period + P(-1)) * Cc(false) + Ct(hexsix ^1) * Cc(true)) -- extended +local index = P("index") * dec * Cc(false) + +local parser = unicode + ucode + index +local parsers = { } + +local function makenameparser(str) + if not str or str == "" then + return parser + else + local p = parsers[str] + if not p then + p = P(str) * period * dec * Cc(false) + parsers[str] = p + end + return p + end +end + +local f_single = formatters["%04X"] +local f_double = formatters["%04X%04X"] +local s_unknown = "FFFD" + +local function tounicode16(unicode) + if unicode < 0xD7FF or (unicode > 0xDFFF and unicode <= 0xFFFF) then + return f_single(unicode) + elseif unicode >= 0x00E000 and unicode <= 0x00F8FF then + return s_unknown + elseif unicode >= 0x0F0000 and unicode <= 0x0FFFFF then + return s_unknown + elseif unicode >= 0x100000 and unicode <= 0x10FFFF then + return s_unknown + elseif unicode >= 0x00D800 and unicode <= 0x00DFFF then + return s_unknown + else + unicode = unicode - 0x10000 + return f_double((k//0x400)+0xD800,unicode%0x400+0xDC00) + end +end + +local function tounicode16sequence(unicodes) + local t = { } + for l=1,#unicodes do + local u = unicodes[l] + if u < 0xD7FF or (u > 0xDFFF and u <= 0xFFFF) then + t[l] = f_single(u) + elseif unicode >= 0x00E000 and unicode <= 0x00F8FF then + t[l] = s_unknown + elseif unicode >= 0x0F0000 and unicode <= 0x0FFFFF then + t[l] = s_unknown + elseif unicode >= 0x100000 and unicode <= 0x10FFFF then + t[l] = s_unknown + -- elseif unicode >= 0x00D800 and unicode <= 0x00DFFF then + elseif unicode >= 0x00D7FF and unicode <= 0x00DFFF then + t[l] = s_unknown + else + u = u - 0x10000 + t[l] = f_double((k//0x400)+0xD800,u%0x400+0xDC00) + end + end + return concat(t) +end + + +local hash = { } +local conc = { } + +table.setmetatableindex(hash,function(t,k) + local v + if k < 0xD7FF or (k > 0xDFFF and k <= 0xFFFF) then + v = f_single(k) + else + local k = k - 0x10000 + v = f_double((k//0x400)+0xD800,k%0x400+0xDC00) + end + t[k] = v + return v +end) + +local function tounicode(k) + if type(k) == "table" then + local n = #k + for l=1,n do + conc[l] = hash[k[l]] + end + return concat(conc,"",1,n) + elseif k >= 0x00E000 and k <= 0x00F8FF then + return s_unknown + elseif k >= 0x0F0000 and k <= 0x0FFFFF then + return s_unknown + elseif k >= 0x100000 and k <= 0x10FFFF then + return s_unknown + -- elseif k >= 0x00D800 and k <= 0x00DFFF then + elseif k >= 0x00D7FF and k <= 0x00DFFF then + return s_unknown + else + return hash[k] + end +end + +local function fromunicode16(str) + if #str == 4 then + return tonumber(str,16) + else + local l, r = match(str,"(....)(....)") + return 0x10000 + (tonumber(l,16)-0xD800)*0x400 + tonumber(r,16) - 0xDC00 + end +end + +-- Slightly slower: +-- +-- local p = C(4) * (C(4)^-1) / function(l,r) +-- if r then +-- return (tonumber(l,16))*0x400 + tonumber(r,16) - 0xDC00 +-- else +-- return tonumber(l,16) +-- end +-- end +-- +-- local function fromunicode16(str) +-- return lpegmatch(p,str) +-- end + +mappings.makenameparser = makenameparser +mappings.tounicode = tounicode +mappings.tounicode16 = tounicode16 +mappings.tounicode16sequence = tounicode16sequence +mappings.fromunicode16 = fromunicode16 + +-- mozilla emoji has bad lig names: name = gsub(name,"(u[a-f0-9_]+)%-([a-f0-9_]+)","%1_%2") + +local ligseparator = P("_") +local varseparator = P(".") +local namesplitter = Ct(C((1 - ligseparator - varseparator)^1) * (ligseparator * C((1 - ligseparator - varseparator)^1))^0) + +-- maybe: ff fi fl ffi ffl => f_f f_i f_l f_f_i f_f_l + +-- local function test(name) +-- local split = lpegmatch(namesplitter,name) +-- print(string.formatters["%s: [% t]"](name,split)) +-- end + +-- test("i.f_") +-- test("this") +-- test("this.that") +-- test("japan1.123") +-- test("such_so_more") +-- test("such_so_more.that") + +-- to be completed .. for fonts that use unicodes for ligatures which +-- is a actually a bad thing and should be avoided in the first place + +do + + local overloads = { + IJ = { name = "I_J", unicode = { 0x49, 0x4A }, mess = 0x0132 }, + ij = { name = "i_j", unicode = { 0x69, 0x6A }, mess = 0x0133 }, + ff = { name = "f_f", unicode = { 0x66, 0x66 }, mess = 0xFB00 }, + fi = { name = "f_i", unicode = { 0x66, 0x69 }, mess = 0xFB01 }, + fl = { name = "f_l", unicode = { 0x66, 0x6C }, mess = 0xFB02 }, + ffi = { name = "f_f_i", unicode = { 0x66, 0x66, 0x69 }, mess = 0xFB03 }, + ffl = { name = "f_f_l", unicode = { 0x66, 0x66, 0x6C }, mess = 0xFB04 }, + fj = { name = "f_j", unicode = { 0x66, 0x6A } }, + fk = { name = "f_k", unicode = { 0x66, 0x6B } }, + + -- endash = { name = "endash", unicode = 0x2013, mess = 0x2013 }, + -- emdash = { name = "emdash", unicode = 0x2014, mess = 0x2014 }, + } + + local o = allocate { } + + for k, v in next, overloads do + local name = v.name + local mess = v.mess + if name then + o[name] = v + end + if mess then + o[mess] = v + end + o[k] = v + end + + mappings.overloads = o + +end + +function mappings.addtounicode(data,filename,checklookups,forceligatures) + local resources = data.resources + local unicodes = resources.unicodes + if not unicodes then + if trace_mapping then + report_fonts("no unicode list, quitting tounicode for %a",filename) + end + return + end + local properties = data.properties + local descriptions = data.descriptions + local overloads = mappings.overloads + -- we need to move this code + unicodes['space'] = unicodes['space'] or 32 + unicodes['hyphen'] = unicodes['hyphen'] or 45 + unicodes['zwj'] = unicodes['zwj'] or 0x200D + unicodes['zwnj'] = unicodes['zwnj'] or 0x200C + -- + local private = fonts.constructors and fonts.constructors.privateoffset or 0xF0000 -- 0x10FFFF + local unicodevector = fonts.encodings.agl.unicodes or { } -- loaded runtime in context + local contextvector = fonts.encodings.agl.ctxcodes or { } -- loaded runtime in context + local missing = { } + local nofmissing = 0 + local oparser = nil + local cidnames = nil + local cidcodes = nil + local cidinfo = properties.cidinfo + local usedmap = cidinfo and fonts.cid.getmap(cidinfo) + local uparser = makenameparser() -- hm, every time? + if usedmap then + oparser = usedmap and makenameparser(cidinfo.ordering) + cidnames = usedmap.names + cidcodes = usedmap.unicodes + end + local ns = 0 + local nl = 0 + -- + -- in order to avoid differences between runs due to hash randomization we + -- run over a sorted list + -- + local dlist = sortedkeys(descriptions) + -- + -- for du, glyph in next, descriptions do + for i=1,#dlist do + local du = dlist[i] + local glyph = descriptions[du] + local name = glyph.name + if name then + local overload = overloads[name] or overloads[du] + if overload then + -- get rid of weird ligatures + -- glyph.name = overload.name + glyph.unicode = overload.unicode + else + local gu = glyph.unicode -- can already be set (number or table) + if not gu or gu == -1 or du >= private or (du >= 0xE000 and du <= 0xF8FF) or du == 0xFFFE or du == 0xFFFF then + local unicode = unicodevector[name] or contextvector[name] + if unicode then + glyph.unicode = unicode + ns = ns + 1 + end + -- cidmap heuristics, beware, there is no guarantee for a match unless + -- the chain resolves + if (not unicode) and usedmap then + local foundindex = lpegmatch(oparser,name) + if foundindex then + unicode = cidcodes[foundindex] -- name to number + if unicode then + glyph.unicode = unicode + ns = ns + 1 + else + local reference = cidnames[foundindex] -- number to name + if reference then + local foundindex = lpegmatch(oparser,reference) + if foundindex then + unicode = cidcodes[foundindex] + if unicode then + glyph.unicode = unicode + ns = ns + 1 + end + end + if not unicode or unicode == "" then + local foundcodes, multiple = lpegmatch(uparser,reference) + if foundcodes then + glyph.unicode = foundcodes + if multiple then + nl = nl + 1 + unicode = true + else + ns = ns + 1 + unicode = foundcodes + end + end + end + end + end + end + end + -- a.whatever or a_b_c.whatever or a_b_c (no numbers) a.b_ + -- + -- It is not trivial to find a solution that suits all fonts. We tried several alternatives + -- and this one seems to work reasonable also with fonts that use less standardized naming + -- schemes. The extra private test is tested by KE and seems to work okay with non-typical + -- fonts as well. + -- + if not unicode or unicode == "" then + local split = lpegmatch(namesplitter,name) + local nsplit = split and #split or 0 -- add if + if nsplit == 0 then + -- skip + elseif nsplit == 1 then + local base = split[1] + local u = unicodes[base] or unicodevector[base] or contextvector[name] + if not u then + -- skip + elseif type(u) == "table" then + -- unlikely + if u[1] < private then + unicode = u + glyph.unicode = unicode + end + elseif u < private then + unicode = u + glyph.unicode = unicode + end + else + local t = { } + local n = 0 + for l=1,nsplit do + local base = split[l] + local u = unicodes[base] or unicodevector[base] or contextvector[name] + if not u then + break + elseif type(u) == "table" then + if u[1] >= private then + break + end + n = n + 1 + t[n] = u[1] + else + if u >= private then + break + end + n = n + 1 + t[n] = u + end + end + if n > 0 then + if n == 1 then + unicode = t[1] + else + unicode = t + end + glyph.unicode = unicode + end + end + nl = nl + 1 + end + -- last resort (we might need to catch private here as well) + if not unicode or unicode == "" then + local foundcodes, multiple = lpegmatch(uparser,name) + if foundcodes then + glyph.unicode = foundcodes + if multiple then + nl = nl + 1 + unicode = true + else + ns = ns + 1 + unicode = foundcodes + end + end + end + -- check using substitutes and alternates + local r = overloads[unicode] + if r then + unicode = r.unicode + glyph.unicode = unicode + end + -- + if not unicode then + missing[du] = true + nofmissing = nofmissing + 1 + end + else + -- maybe a message or so + end + end + else + local overload = overloads[du] + if overload then + glyph.unicode = overload.unicode + elseif not glyph.unicode then + missing[du] = true + nofmissing = nofmissing + 1 + end + end + end + if type(checklookups) == "function" then + checklookups(data,missing,nofmissing) + end + + local unicoded = 0 + local collected = fonts.handlers.otf.readers.getcomponents(data) -- neglectable overhead + + local function resolve(glyph,u) + local n = #u + for i=1,n do + if u[i] > private then + n = 0 + break + end + end + if n > 0 then + if n > 1 then + glyph.unicode = u + else + glyph.unicode = u[1] + end + unicoded = unicoded + 1 + end + end + + if not collected then + -- move on + elseif forceligatures or force_ligatures then + for i=1,#dlist do + local du = dlist[i] + if du >= private or (du >= 0xE000 and du <= 0xF8FF) then + local u = collected[du] -- always tables + if u then + resolve(descriptions[du],u) + end + end + end + else + for i=1,#dlist do + local du = dlist[i] + if du >= private or (du >= 0xE000 and du <= 0xF8FF) then + local glyph = descriptions[du] + if glyph.class == "ligature" and not glyph.unicode then + local u = collected[du] -- always tables + if u then + resolve(glyph,u) + end + end + end + end + end + + if trace_mapping and unicoded > 0 then + report_fonts("%n ligature tounicode mappings deduced from gsub ligature features",unicoded) + end + if trace_mapping then + -- for unic, glyph in sortedhash(descriptions) do + for i=1,#dlist do + local du = dlist[i] + local glyph = descriptions[du] + local name = glyph.name or "-" + local index = glyph.index or 0 + local unicode = glyph.unicode + if unicode then + if type(unicode) == "table" then + local unicodes = { } + for i=1,#unicode do + unicodes[i] = formatters("%U",unicode[i]) + end + report_fonts("internal slot %U, name %a, unicode %U, tounicode % t",index,name,du,unicodes) + else + report_fonts("internal slot %U, name %a, unicode %U, tounicode %U",index,name,du,unicode) + end + else + report_fonts("internal slot %U, name %a, unicode %U",index,name,du) + end + end + end + if trace_loading and (ns > 0 or nl > 0) then + report_fonts("%s tounicode entries added, ligatures %s",nl+ns,ns) + end +end + +-- local parser = makenameparser("Japan1") +-- local parser = makenameparser() +-- local function test(str) +-- local b, a = lpegmatch(parser,str) +-- print((a and table.serialize(b)) or b) +-- end +-- test("a.sc") +-- test("a") +-- test("uni1234") +-- test("uni1234.xx") +-- test("uni12349876") +-- test("u123400987600") +-- test("index1234") +-- test("Japan1.123") |