diff options
Diffstat (limited to 'tex/context/base/mkiv/typo-duc.lua')
| -rw-r--r-- | tex/context/base/mkiv/typo-duc.lua | 161 |
1 files changed, 44 insertions, 117 deletions
diff --git a/tex/context/base/mkiv/typo-duc.lua b/tex/context/base/mkiv/typo-duc.lua index 60191bf83..29d90cd4a 100644 --- a/tex/context/base/mkiv/typo-duc.lua +++ b/tex/context/base/mkiv/typo-duc.lua @@ -7,8 +7,6 @@ if not modules then modules = { } end modules ['typo-duc'] = { comment = "Unicode bidi (sort of) variant c", } --- Will be replaced by typo-duc-new.lua! - -- This is a follow up on typo-uda which itself is a follow up on t-bidi by Khaled Hosny which -- in turn is based on minibidi.c from Arabeyes. This is a further optimizations, as well as -- an update on some recent unicode bidi developments. There is (and will) also be more control @@ -58,6 +56,7 @@ local mirrordata = characters.mirrors local textclassdata = characters.textclasses local nuts = nodes.nuts +local tonut = nuts.tonut local getnext = nuts.getnext local getid = nuts.getid @@ -66,11 +65,11 @@ local getlist = nuts.getlist local getchar = nuts.getchar local getattr = nuts.getattr local getprop = nuts.getprop -local getdir = nuts.getdir +local getdirection = nuts.getdirection local setprop = nuts.setprop local setchar = nuts.setchar -local setdir = nuts.setdir +local setdirection = nuts.setdirection local setattrlist = nuts.setattrlist local properties = nodes.properties.data @@ -80,10 +79,10 @@ local insert_node_after = nuts.insert_after local insert_node_before = nuts.insert_before local nodepool = nuts.pool -local new_textdir = nodepool.textdir +local new_direction = nodepool.direction local nodecodes = nodes.nodecodes -local skipcodes = nodes.skipcodes +local gluecodes = nodes.gluecodes local glyph_code = nodecodes.glyph local glue_code = nodecodes.glue @@ -92,7 +91,12 @@ local vlist_code = nodecodes.vlist local math_code = nodecodes.math local dir_code = nodecodes.dir local localpar_code = nodecodes.localpar -local parfillskip_code = skipcodes.parfillskip + +local parfillskip_code = gluecodes.parfillskip + +local dirvalues = nodes.dirvalues +local lefttoright_code = dirvalues.lefttoright +local righttoleft_code = dirvalues.righttoleft local maximum_stack = 0xFF -- unicode: 60, will be jumped to 125, we don't care too much @@ -290,13 +294,11 @@ local function build_list(head) -- todo: store node pointer ... saves loop list[size] = setmetatable({ },mt_space) current = getnext(current) elseif id == dir_code then - local dir = getdir(current) - if dir == "+TLT" then - list[size] = setmetatable({ },mt_lre) - elseif dir == "+TRT" then - list[size] = setmetatable({ },mt_rle) - elseif dir == "-TLT" or dir == "-TRT" then - list[size] = setmetatable({ },mt_pdf) + local dir, pop = getdirection(current) + if dir == lefttoright_code then + list[size] = setmetatable({ },swap and mt_pdf or mt_lre) + elseif dir == righttoleft_code then + list[size] = setmetatable({ },swap and mt_pdf or mt_rle) else list[size] = setmetatable({ id = id },mt_object) end @@ -405,25 +407,31 @@ end -- the action local function get_baselevel(head,list,size,direction) - if not direction and getid(head) == localpar_code then - direction = getdir(head) + if direction == lefttoright_code or direction == righttoleft_code then + return direction, true + elseif getid(head) == localpar_code then + direction = getdirection(head) + if direction == righttoleft_code or direction == lefttoright_code then + return direction, true + end end - if direction == "TRT" then - return 1, "TRT", true - elseif direction == "TLT" then - return 0, "TLT", true + -- for old times sake we we handle strings too + if direction == "TLT" then + return righttoleft_code, true + elseif direction == "TRT" then + return lefttoright_code, true end -- P2, P3: for i=1,size do local entry = list[i] local direction = entry.direction if direction == "r" or direction == "al" then -- and an ? - return 1, "TRT", true + return righttoleft_code, true elseif direction == "l" then - return 0, "TLT", true + return lefttoright_code, true end end - return 0, "TLT", false + return lefttoright_code, false end local function resolve_explicit(list,size,baselevel) @@ -724,33 +732,6 @@ local function resolve_neutral(list,size,start,limit,orderbefore,orderafter) end end --- local function resolve_implicit(list,size,start,limit,orderbefore,orderafter) --- -- I1 --- for i=start,limit do --- local entry = list[i] --- local level = entry.level --- if level % 2 ~= 1 then -- not odd(level) --- local direction = entry.direction --- if direction == "r" then --- entry.level = level + 1 --- elseif direction == "an" or direction == "en" then --- entry.level = level + 2 --- end --- end --- end --- -- I2 --- for i=start,limit do --- local entry = list[i] --- local level = entry.level --- if level % 2 == 1 then -- odd(level) --- local direction = entry.direction --- if direction == "l" or direction == "en" or direction == "an" then --- entry.level = level + 1 --- end --- end --- end --- end - local function resolve_implicit(list,size,start,limit,orderbefore,orderafter,baselevel) for i=start,limit do local entry = list[i] @@ -850,60 +831,6 @@ local function resolve_levels(list,size,baselevel,analyze_fences) end end --- local function insert_dir_points(list,size) --- -- L2, but no actual reversion is done, we simply annotate where --- -- begindir/endddir node will be inserted. --- local maxlevel = 0 --- local finaldir = false --- local toggle = true --- for i=1,size do --- local level = list[i].level --- if level > maxlevel then --- maxlevel = level --- end --- end --- for level=0,maxlevel do --- local started -- = false --- local begindir -- = nil --- local enddir -- = nil --- local prev -- = nil --- if toggle then --- begindir = "+TLT" --- enddir = "-TLT" --- toggle = false --- else --- begindir = "+TRT" --- enddir = "-TRT" --- toggle = true --- end --- for i=1,size do --- local entry = list[i] --- if entry.level >= level then --- if not started then --- entry.begindir = begindir --- started = true --- end --- else --- if started then --- prev.enddir = enddir --- started = false --- end --- end --- prev = entry --- end --- -- make sure to close the run at end of line --- if started then --- finaldir = enddir --- end --- end --- if finaldir then --- list[size].enddir = finaldir --- end --- for i=1,size do --- print("<",i,list[i].level,list[i].begindir,list[i].enddir) --- end --- end - local stack = { } local function insert_dir_points(list,size) @@ -923,12 +850,12 @@ local function insert_dir_points(list,size) local enddir -- = nil local prev -- = nil if toggle then - begindir = "+TLT" - enddir = "-TLT" + begindir = lefttoright_code + enddir = lefttoright_code toggle = false else - begindir = "+TRT" - enddir = "-TRT" + begindir = righttoleft_code + enddir = righttoleft_code toggle = true end for i=1,size do @@ -967,7 +894,7 @@ local function insert_dir_points(list,size) if trace_list and n > 1 then report_directions("unbalanced list") end - last.enddir = stack[n] == "+TRT" and "-TRT" or "-TLT" + last.enddir = stack[n] end end end @@ -1008,11 +935,11 @@ local function apply_to_list(list,size,head,pardir) setcolor(current,direction,false,mirror) end elseif id == hlist_code or id == vlist_code then - setdir(current,pardir) -- is this really needed? + setdirection(current,pardir) -- is this really needed? elseif id == glue_code then if enddir and getsubtype(current) == parfillskip_code then -- insert the last enddir before \parfillskip glue - local d = new_textdir(enddir) + local d = new_direction(enddir,true) local p = properties[d] if p then p.directions = true else properties[d] = { directions = true } end -- setattrlist(d,current) head = insert_node_before(head,current,d) @@ -1021,7 +948,7 @@ local function apply_to_list(list,size,head,pardir) elseif begindir then if id == localpar_code then -- localpar should always be the 1st node - local d = new_textdir(begindir) + local d = new_direction(begindir) local p = properties[d] if p then p.directions = true else properties[d] = { directions = true } end -- setattrlist(d,current) head, current = insert_node_after(head,current,d) @@ -1029,7 +956,7 @@ local function apply_to_list(list,size,head,pardir) end end if begindir then - local d = new_textdir(begindir) + local d = new_direction(begindir) local p = properties[d] if p then p.directions = true else properties[d] = { directions = true } end -- setattrlist(d,current) head = insert_node_before(head,current,d) @@ -1042,7 +969,7 @@ local function apply_to_list(list,size,head,pardir) end end if enddir then - local d = new_textdir(enddir) + local d = new_direction(enddir,true) local p = properties[d] if p then p.directions = true else properties[d] = { directions = true } end -- setattrlist(d,current) head, current = insert_node_after(head,current,d) @@ -1075,9 +1002,9 @@ local function process(head,direction,only_one) local analyze_fences = getfences(attr) -- local list, size = build_list(head) - local baselevel, pardir, dirfound = get_baselevel(head,list,size,direction) -- we always have an inline dir node in context + local baselevel, dirfound = get_baselevel(head,list,size,direction) -- we always have an inline dir node in context if trace_details then - report_directions("analyze: direction %a, baselevel %a",dirfound and pardir or "unknown",baselevel or 1) + report_directions("analyze: baselevel %a",baselevel == righttoleft_code and "r2l" or "l2r") report_directions("before : %s",show_list(list,size,"original")) end resolve_explicit(list,size,baselevel) @@ -1087,7 +1014,7 @@ local function process(head,direction,only_one) report_directions("after : %s",show_list(list,size,"direction")) report_directions("result : %s",show_done(list,size)) end - return apply_to_list(list,size,head,pardir) + return apply_to_list(list,size,head,baselevel) end directions.installhandler(interfaces.variables.three,process) |