diff options
Diffstat (limited to 'tex/context/base/mkiv/font-oup.lua')
-rw-r--r-- | tex/context/base/mkiv/font-oup.lua | 109 |
1 files changed, 108 insertions, 1 deletions
diff --git a/tex/context/base/mkiv/font-oup.lua b/tex/context/base/mkiv/font-oup.lua index 4e70bf936..4c3d562c2 100644 --- a/tex/context/base/mkiv/font-oup.lua +++ b/tex/context/base/mkiv/font-oup.lua @@ -44,6 +44,9 @@ directives.register("otf.checksofthyphen",function(v) check_soft_hyphen = v -- only for testing end) +-- After (!) the unicodes have been resolved we compact ligature tables so before that happens +-- we don't need to check for numbers. + local function replaced(list,index,replacement) if type(list) == "number" then return replacement @@ -1043,6 +1046,10 @@ function readers.getcomponents(fontdata) -- handy for resolving ligatures when n local function traverse(p,k,v) if k == "ligature" then collected[v] = { unpack(l) } + elseif tonumber(v) then + insert(l,k) + collected[v] = { unpack(l) } + remove(l) else insert(l,k) for k, vv in next, v do @@ -1230,7 +1237,6 @@ local function tabstr_flat(t) end local function tabstr_mixed(t) -- indexed - local s = { } local n = #t if n == 0 then return "" @@ -1244,6 +1250,7 @@ local function tabstr_mixed(t) -- indexed return tostring(k) -- number or string end else + local s = { } for i=1,n do local k = t[i] if k == true then @@ -1353,6 +1360,21 @@ function readers.pack(data) end end + -- local function pack_indexed(v) -- less code + -- local tag = concat(v," ") + -- local ht = h[tag] + -- if ht then + -- c[ht] = c[ht] + 1 + -- else + -- ht = nt + 1 + -- t[ht] = v + -- c[ht] = 1 + -- h[tag] = ht + -- nt = ht + -- end + -- return ht + -- end + local function pack_mixed(v) local tag = tabstr_mixed(v) local ht = h[tag] @@ -2801,6 +2823,91 @@ function readers.compact(data) end end +if CONTEXTLMTXMODE and CONTEXTLMTXMODE > 0 then + + local done = 0 + + local function condense_1(k,v,t) + if type(v) == "table" then + local u = false + local l = false + for k, v in next, v do + if k == "ligature" then + l = v + if u then + break + end + elseif u then + break + else + u = true + end + end + if l and not u then + t[k] = l + done = done + 1 + end + if u then + for k, vv in next, v do + if k ~= "ligature" then + condense_1(k,vv,v) + end + end + end + end + end + + local function condensesteps_1(lookup) + done = 0 + if lookup.type == "gsub_ligature" then + local steps = lookup.steps + if steps then + for i=1,#steps do + local step = steps[i] + local coverage = step.coverage + if coverage then + for k, v in next, coverage do + if condense_1(k,v,coverage) then + coverage[k] = v.ligature + done = done + 1 + end + end + end + end + end + end + return done + end + + function readers.condense(data) + if not data or data.condensed then + return + else + data.condensed = true + end + local resources = data.resources + local condensed = 0 + local function condense(what) + local lookups = resources[what] + if lookups then + for i=1,#lookups do + condensed = condensed + condensesteps_1(lookups[i]) + end + elseif trace_optimizations then + report_optimizations("no lookups in %a",what) + end + end + condense("sequences") + condense("sublookups") + if trace_optimizations then + if condensed > 0 then + report_optimizations("%i ligatures condensed",condensed) + end + end + end + +end + local function mergesteps(t,k) if k == "merged" then local merged = { } |