diff options
Diffstat (limited to 'otfl-font-otn.lua')
| -rw-r--r-- | otfl-font-otn.lua | 366 |
1 files changed, 182 insertions, 184 deletions
diff --git a/otfl-font-otn.lua b/otfl-font-otn.lua index ebdeb75..914a7de 100644 --- a/otfl-font-otn.lua +++ b/otfl-font-otn.lua @@ -1917,7 +1917,7 @@ local function initialize(sequence,script,language,enabled) if valid then local languages = scripts[script] or scripts[wildcard] if languages and (languages[language] or languages[wildcard]) then - return { valid, special_attributes[kind] or false, sequence.chain or 0, kind } + return { valid, special_attributes[kind] or false, sequence.chain or 0, kind, sequence } end end end @@ -1925,7 +1925,7 @@ local function initialize(sequence,script,language,enabled) return false end -function otf.dataset(ftfmdata,sequences,font) -- generic variant, overloaded in context +function otf.dataset(tfmdata,sequences,font) -- generic variant, overloaded in context local shared = tfmdata.shared local properties = tfmdata.properties local language = properties.language or "dflt" @@ -1954,6 +1954,22 @@ function otf.dataset(ftfmdata,sequences,font) -- generic variant, overloaded in return rl end +-- elseif id == glue_code then +-- if p[5] then -- chain +-- local pc = pp[32] +-- if pc then +-- start, ok = start, false -- p[1](start,kind,p[2],pc,p[3],p[4]) +-- if ok then +-- done = true +-- end +-- if start then start = start.next end +-- else +-- start = start.next +-- end +-- else +-- start = start.next +-- end + local function featuresprocessor(head,font,attr) local lookuphash = lookuphashes[font] -- we can also check sequences here @@ -1983,66 +1999,147 @@ local function featuresprocessor(head,font,attr) local done = false local datasets = otf.dataset(tfmdata,sequences,font,attr) + local dirstack = { } -- could move outside function + + -- We could work on sub start-stop ranges instead but I wonder if there is that + -- much speed gain (experiments showed that it made not much sense) and we need + -- to keep track of directions anyway. Also at some point I want to play with + -- font interactions and then we do need the full sweeps. + for s=1,#sequences do - local dataset = datasets[s] -- cache -- s? - featurevalue = dataset and dataset[1] -- todo: pass to function instead of using a global - if featurevalue then - local sequence = sequences[s] - local pardir, txtdir, success = 0, { }, false -- we could reuse txtdir and use a top pointer - local attribute, chain, typ, subtables = dataset[2], dataset[3], sequence.type, sequence.subtables - if chain < 0 then - -- this is a limited case, no special treatments like 'init' etc - local handler = handlers[typ] - -- we need to get rid of this slide! probably no longer needed in latest luatex - local start = find_node_tail(head) -- slow (we can store tail because there's always a skip at the end): todo - while start do - local id = start.id - if id == glyph_code then - if start.subtype<256 and start.font == font then - local a = has_attribute(start,0) - if a then - a = a == attr - else - a = true - end - if a then - for i=1,#subtables do - local lookupname = subtables[i] - local lookupcache = lookuphash[lookupname] - if lookupcache then - local lookupmatch = lookupcache[start.char] - if lookupmatch then - start, success = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,i) - if success then - break + local dataset = datasets[s] + if dataset then + featurevalue = dataset[1] -- todo: pass to function instead of using a global + if featurevalue then + local sequence = sequences[s] -- also dataset[5] + local rlparmode = 0 + local topstack = 0 + local success = false + local attribute = dataset[2] + local chain = dataset[3] -- sequence.chain or 0 + local typ = sequence.type + local subtables = sequence.subtables + if chain < 0 then + -- this is a limited case, no special treatments like 'init' etc + local handler = handlers[typ] + -- we need to get rid of this slide! probably no longer needed in latest luatex + local start = find_node_tail(head) -- slow (we can store tail because there's always a skip at the end): todo + while start do + local id = start.id + if id == glyph_code then + if start.subtype<256 and start.font == font then + local a = has_attribute(start,0) + if a then + a = a == attr + else + a = true + end + if a then + for i=1,#subtables do + local lookupname = subtables[i] + local lookupcache = lookuphash[lookupname] + if lookupcache then + local lookupmatch = lookupcache[start.char] + if lookupmatch then + start, success = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,i) + if success then + break + end end + else + report_missing_cache(typ,lookupname) end - else - report_missing_cache(typ,lookupname) end + if start then start = start.prev end + else + start = start.prev end - if start then start = start.prev end else start = start.prev end else start = start.prev end - else - start = start.prev end - end - else - local handler = handlers[typ] - local ns = #subtables - local start = head -- local ? - rlmode = 0 -- to be checked ? - if ns == 1 then - local lookupname = subtables[1] - local lookupcache = lookuphash[lookupname] ---~ inspect(lookupcache) - if not lookupcache then -- also check for empty cache - report_missing_cache(typ,lookupname) + else + local handler = handlers[typ] + local ns = #subtables + local start = head -- local ? + rlmode = 0 -- to be checked ? + if ns == 1 then -- happens often + local lookupname = subtables[1] + local lookupcache = lookuphash[lookupname] + if not lookupcache then -- also check for empty cache + report_missing_cache(typ,lookupname) + else + while start do + local id = start.id + if id == glyph_code then + if start.subtype<256 and start.font == font then + local a = has_attribute(start,0) + if a then + a = (a == attr) and (not attribute or has_attribute(start,state,attribute)) + else + a = not attribute or has_attribute(start,state,attribute) + end + if a then + local lookupmatch = lookupcache[start.char] + if lookupmatch then + -- sequence kan weg + local ok + start, ok = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,1) + if ok then + success = true + end + end + if start then start = start.next end + else + start = start.next + end + else + start = start.next + end + elseif id == whatsit_code then -- will be function + local subtype = start.subtype + if subtype == dir_code then + local dir = start.dir + if dir == "+TRT" or dir == "+TLT" then + topstack = topstack + 1 + dirstack[topstack] = dir + elseif dir == "-TRT" or dir == "-TLT" then + topstack = topstack - 1 + end + local newdir = dirstack[topstack] + if newdir == "+TRT" then + rlmode = -1 + elseif newdir == "+TLT" then + rlmode = 1 + else + rlmode = rlparmode + end + if trace_directions then + report_process("directions after txtdir %s: txtdir=%s:%s, parmode=%s, txtmode=%s",dir,topstack,newdir or "unset",rlparmode,rlmode) + end + elseif subtype == localpar_code then + local dir = start.dir + if dir == "TRT" then + rlparmode = -1 + elseif dir == "TLT" then + rlparmode = 1 + else + rlparmode = 0 + end + rlmode = rlparmode + if trace_directions then + report_process("directions after pardir %s: parmode=%s, txtmode=%s",dir,rlparmode,rlmode) + end + end + start = start.next + else + start = start.next + end + end + end else while start do local id = start.id @@ -2054,15 +2151,23 @@ local function featuresprocessor(head,font,attr) else a = not attribute or has_attribute(start,state,attribute) end ---~ print(a,start.char) if a then - local lookupmatch = lookupcache[start.char] - if lookupmatch then - -- sequence kan weg - local ok - start, ok = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,1) - if ok then - success = true + for i=1,ns do + local lookupname = subtables[i] + local lookupcache = lookuphash[lookupname] + if lookupcache then + local lookupmatch = lookupcache[start.char] + if lookupmatch then + -- we could move all code inline but that makes things even more unreadable + local ok + start, ok = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,i) + if ok then + success = true + break + end + end + else + report_missing_cache(typ,lookupname) end end if start then start = start.next end @@ -2072,54 +2177,39 @@ local function featuresprocessor(head,font,attr) else start = start.next end - -- elseif id == glue_code then - -- if p[5] then -- chain - -- local pc = pp[32] - -- if pc then - -- start, ok = start, false -- p[1](start,kind,p[2],pc,p[3],p[4]) - -- if ok then - -- done = true - -- end - -- if start then start = start.next end - -- else - -- start = start.next - -- end - -- else - -- start = start.next - -- end elseif id == whatsit_code then local subtype = start.subtype if subtype == dir_code then local dir = start.dir if dir == "+TRT" or dir == "+TLT" then - insert(txtdir,dir) + topstack = topstack + 1 + dirstack[topstack] = dir elseif dir == "-TRT" or dir == "-TLT" then - remove(txtdir) + topstack = topstack - 1 end - local d = txtdir[#txtdir] - if d == "+TRT" then + local newdir = dirstack[topstack] + if newdir == "+TRT" then rlmode = -1 - elseif d == "+TLT" then + elseif newdir == "+TLT" then rlmode = 1 else - rlmode = pardir + rlmode = rlparmode end if trace_directions then - report_process("directions after textdir %s: pardir=%s, txtdir=%s:%s, rlmode=%s",dir,pardir,#txtdir,txtdir[#txtdir] or "unset",rlmode) + report_process("directions after txtdir %s: txtdir=%s:%s, parmode=%s, txtmode=%s",dir,topstack,newdir or "unset",rlparmode,rlmode) end elseif subtype == localpar_code then local dir = start.dir if dir == "TRT" then - pardir = -1 + rlparmode = -1 elseif dir == "TLT" then - pardir = 1 + rlparmode = 1 else - pardir = 0 + rlparmode = 0 end - rlmode = pardir - --~ txtdir = { } + rlmode = rlparmode if trace_directions then - report_process("directions after pardir %s: pardir=%s, txtdir=%s:%s, rlmode=%s",dir,pardir,#txtdir,txtdir[#txtdir] or "unset",rlmode) + report_process("directions after pardir %s: parmode=%s, txtmode=%s",dir,rlparmode,rlmode) end end start = start.next @@ -2128,105 +2218,13 @@ local function featuresprocessor(head,font,attr) end end end - else - while start do - local id = start.id - if id == glyph_code then - if start.subtype<256 and start.font == font then - local a = has_attribute(start,0) - if a then - a = (a == attr) and (not attribute or has_attribute(start,state,attribute)) - else - a = not attribute or has_attribute(start,state,attribute) - end - if a then - for i=1,ns do - local lookupname = subtables[i] - local lookupcache = lookuphash[lookupname] - if lookupcache then - local lookupmatch = lookupcache[start.char] - if lookupmatch then - -- we could move all code inline but that makes things even more unreadable - local ok - start, ok = handler(start,dataset[4],lookupname,lookupmatch,sequence,lookuphash,i) - if ok then - success = true - break - end - end - else - report_missing_cache(typ,lookupname) - end - end - if start then start = start.next end - else - start = start.next - end - else - start = start.next - end - -- elseif id == glue_code then - -- if p[5] then -- chain - -- local pc = pp[32] - -- if pc then - -- start, ok = start, false -- p[1](start,kind,p[2],pc,p[3],p[4]) - -- if ok then - -- done = true - -- end - -- if start then start = start.next end - -- else - -- start = start.next - -- end - -- else - -- start = start.next - -- end - elseif id == whatsit_code then - local subtype = start.subtype - if subtype == dir_code then - local dir = start.dir - if dir == "+TRT" or dir == "+TLT" then - insert(txtdir,dir) - elseif dir == "-TRT" or dir == "-TLT" then - remove(txtdir) - end - local d = txtdir[#txtdir] - if d == "+TRT" then - rlmode = -1 - elseif d == "+TLT" then - rlmode = 1 - else - rlmode = pardir - end - if trace_directions then - report_process("directions after textdir %s: pardir=%s, txtdir=%s:%s, rlmode=%s",dir,pardir,#txtdir,txtdir[#txtdir] or "unset",rlmode) - end - elseif subtype == localpar_code then - local dir = start.dir - if dir == "TRT" then - pardir = -1 - elseif dir == "TLT" then - pardir = 1 - else - pardir = 0 - end - rlmode = pardir - --~ txtdir = { } - if trace_directions then - report_process("directions after pardir %s: pardir=%s, txtdir=%s:%s, rlmode=%s",dir,pardir,#txtdir,txtdir[#txtdir] or "unset",rlmode) - end - end - start = start.next - else - start = start.next - end - end end - end - if success then - done = true - end - if trace_steps then -- ? - registerstep(head) + if success then + done = true + end + if trace_steps then -- ? + registerstep(head) + end end end end |