diff options
Diffstat (limited to 'tex/context/base/mkiv/font-otc.lua')
| -rw-r--r-- | tex/context/base/mkiv/font-otc.lua | 299 |
1 files changed, 2 insertions, 297 deletions
diff --git a/tex/context/base/mkiv/font-otc.lua b/tex/context/base/mkiv/font-otc.lua index 2bad62d60..fb8bf7c66 100644 --- a/tex/context/base/mkiv/font-otc.lua +++ b/tex/context/base/mkiv/font-otc.lua @@ -6,11 +6,10 @@ if not modules then modules = { } end modules ['font-otc'] = { license = "see context related readme files" } -local format, insert, sortedkeys, tohash = string.format, table.insert, table.sortedkeys, table.tohash +local insert, sortedkeys, sortedhash, tohash = table.insert, table.sortedkeys, table.sortedhash, table.tohash local type, next = type, next local lpegmatch = lpeg.match -local utfbyte, utflen, utfsplit = utf.byte, utf.len, utf.split -local match = string.match +local utfbyte, utflen = utf.byte, utf.len local sortedhash = table.sortedhash -- we assume that the other otf stuff is loaded already @@ -813,177 +812,6 @@ otf.enhancers.enhance = enhance otf.enhancers.register("check extra features",enhance) --- tlig -- - -local tlig = { -- we need numbers for some fonts so ... - -- endash = "hyphen hyphen", - -- emdash = "hyphen hyphen hyphen", - [0x2013] = { 0x002D, 0x002D }, - [0x2014] = { 0x002D, 0x002D, 0x002D }, - -- quotedblleft = "quoteleft quoteleft", - -- quotedblright = "quoteright quoteright", - -- quotedblleft = "grave grave", - -- quotedblright = "quotesingle quotesingle", - -- quotedblbase = "comma comma", -} - -local tlig_specification = { - type = "ligature", - features = everywhere, - data = tlig, - order = { "tlig" }, - flags = noflags, - prepend = true, -} - -otf.addfeature("tlig",tlig_specification) - -registerotffeature { - -- this makes it a known feature (in tables) - name = 'tlig', - description = 'tex ligatures', -} - --- trep - -local trep = { - -- [0x0022] = 0x201D, - [0x0027] = 0x2019, - -- [0x0060] = 0x2018, -} - -local trep_specification = { - type = "substitution", - features = everywhere, - data = trep, - order = { "trep" }, - flags = noflags, - prepend = true, -} - -otf.addfeature("trep",trep_specification) - -registerotffeature { - -- this makes it a known feature (in tables) - name = 'trep', - description = 'tex replacements', -} - --- -- tcom (obsolete, was already not set for a while) - --- if characters.combined then --- --- local tcom = { } --- --- local function initialize() --- characters.initialize() --- for first, seconds in next, characters.combined do --- for second, combination in next, seconds do --- tcom[combination] = { first, second } --- end --- end --- -- return false --- end --- --- local tcom_specification = { --- type = "ligature", --- features = everywhere, --- data = tcom, --- order = { "tcom" }, --- flags = noflags, --- initialize = initialize, --- } --- --- otf.addfeature("tcom",tcom_specification) --- --- registerotffeature { --- name = 'tcom', --- description = 'tex combinations', --- } --- --- end - --- anum - -local anum_arabic = { - [0x0030] = 0x0660, - [0x0031] = 0x0661, - [0x0032] = 0x0662, - [0x0033] = 0x0663, - [0x0034] = 0x0664, - [0x0035] = 0x0665, - [0x0036] = 0x0666, - [0x0037] = 0x0667, - [0x0038] = 0x0668, - [0x0039] = 0x0669, -} - -local anum_persian = { - [0x0030] = 0x06F0, - [0x0031] = 0x06F1, - [0x0032] = 0x06F2, - [0x0033] = 0x06F3, - [0x0034] = 0x06F4, - [0x0035] = 0x06F5, - [0x0036] = 0x06F6, - [0x0037] = 0x06F7, - [0x0038] = 0x06F8, - [0x0039] = 0x06F9, -} - -local function valid(data) - local features = data.resources.features - if features then - for k, v in next, features do - for k, v in next, v do - if v.arab then - return true - end - end - end - end -end - -local anum_specification = { - { - type = "substitution", - features = { arab = { urd = true, dflt = true } }, - order = { "anum" }, - data = anum_arabic, - flags = noflags, -- { }, - valid = valid, - }, - { - type = "substitution", - features = { arab = { urd = true } }, - order = { "anum" }, - data = anum_persian, - flags = noflags, -- { }, - valid = valid, - }, -} - -otf.addfeature("anum",anum_specification) -- todo: only when there is already an arab script feature - -registerotffeature { - -- this makes it a known feature (in tables) - name = 'anum', - description = 'arabic digits', -} - --- maybe: - --- fonts.handlers.otf.addfeature("hangulfix",{ --- type = "substitution", --- features = { ["hang"] = { ["*"] = true } }, --- data = { --- [0x1160] = 0x119E, --- }, --- order = { "hangulfix" }, --- flags = { }, --- prepend = true, --- }) - -- fonts.handlers.otf.features.register { -- name = 'hangulfix', -- description = 'fixes for hangul', @@ -1028,126 +856,3 @@ registerotffeature { -- a = { b = -500 }, -- } -- } - --- This is a quick and dirty hack. - -local lookups = { } -local protect = { } -local revert = { } -local zwjchar = 0x200C -local zwj = { zwjchar } - -otf.addfeature { - name = "blockligatures", - type = "chainsubstitution", - nocheck = true, -- because there is no 0x200C in the font - prepend = true, -- make sure we do it early - future = true, -- avoid nilling due to no steps yet - lookups = { - { - type = "multiple", - data = lookups, - }, - }, - data = { - rules = protect, - } -} - -otf.addfeature { - name = "blockligatures", - type = "chainsubstitution", - nocheck = true, -- because there is no 0x200C in the font - append = true, -- this is done late - overload = false, -- we don't want to overload the previous definition - lookups = { - { - type = "ligature", - data = lookups, - }, - }, - data = { - rules = revert, - } -} - -registerotffeature { - name = 'blockligatures', - description = 'block certain ligatures', -} - -local settings_to_array = utilities.parsers and utilities.parsers.settings_to_array - or function(s) return string.split(s,",") end -- for generic - -local splitter = lpeg.splitat(":") - -local function blockligatures(str) - - local t = settings_to_array(str) - - for i=1,#t do - local ti = t[i] - local before, current, after = lpegmatch(splitter,ti) - if current and after then -- before is returned when no match - -- experimental joke - if before then - before = utfsplit(before) - for i=1,#before do - before[i] = { before[i] } - end - end - if current then - current = utfsplit(current) - end - if after then - after = utfsplit(after) - for i=1,#after do - after[i] = { after[i] } - end - end - else - before = nil - current = utfsplit(ti) - after = nil - end - if #current > 1 then - local one = current[1] - local two = current[2] - lookups[one] = { one, zwjchar } - local one = { one } - local two = { two } - local new = #protect + 1 - protect[new] = { - before = before, - current = { one, two }, - after = after, - lookups = { 1 }, -- not shared ! - } - revert[new] = { - -- before = before, - current = { one, zwj }, - -- after = { two, unpack(after) }, - after = { two }, - lookups = { 1 }, -- not shared ! - } - end - end -end - --- blockligatures("\0\0") - -otf.helpers.blockligatures = blockligatures - --- blockligatures("fi,ff") --- blockligatures("fl") --- blockligatures("u:fl:age") - -if context then - - interfaces.implement { - name = "blockligatures", - arguments = "string", - actions = blockligatures, - } - -end |