diff options
Diffstat (limited to 'tex/context/base/mkiv/typo-dua.lua')
| -rw-r--r-- | tex/context/base/mkiv/typo-dua.lua | 144 |
1 files changed, 75 insertions, 69 deletions
diff --git a/tex/context/base/mkiv/typo-dua.lua b/tex/context/base/mkiv/typo-dua.lua index 1e48dfb91..3db5f510a 100644 --- a/tex/context/base/mkiv/typo-dua.lua +++ b/tex/context/base/mkiv/typo-dua.lua @@ -68,8 +68,6 @@ local directiondata = characters.directions local mirrordata = characters.mirrors local nuts = nodes.nuts -local tonut = nuts.tonut -local tonode = nuts.tonode local getnext = nuts.getnext local getid = nuts.getid @@ -77,11 +75,11 @@ local getsubtype = nuts.getsubtype local getlist = nuts.getlist local getchar = nuts.getchar 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 ----- setattrlist = nuts.setattrlist local remove_node = nuts.remove @@ -89,10 +87,10 @@ 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 @@ -101,23 +99,28 @@ 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 ------ object_replacement = 0xFFFC -- object replacement character -local maximum_stack = 60 -- probably spec but not needed +local parfillskip_code = gluecodes.parfillskip + +local dirvalues = nodes.dirvalues +local lefttoright_code = dirvalues.lefttoright +local righttoleft_code = dirvalues.righttoleft + +local maximum_stack = 60 local directions = typesetters.directions local setcolor = directions.setcolor ------ a_directions = attributes.private('directions') - local remove_controls = true directives.register("typesetters.directions.one.removecontrols",function(v) remove_controls = v end) -local trace_directions = false trackers .register("typesetters.directions.one", function(v) trace_directions = v end) -local trace_details = false trackers .register("typesetters.directions.one.details", function(v) trace_details = v end) - local report_directions = logs.reporter("typesetting","directions one") +local trace_directions = false trackers .register("typesetters.directions", function(v) trace_directions = v end) +local trace_details = false trackers .register("typesetters.directions.details", function(v) trace_details = v end) + + + + local whitespace = { lre = true, rle = true, @@ -234,13 +237,19 @@ local function build_list(head) -- todo: store node pointer ... saves loop list[size] = { char = 0x0020, direction = "ws", original = "ws", level = 0 } current = getnext(current) elseif id == dir_code then - local dir = getdir(current) - if dir == "+TLT" then - list[size] = { char = 0x202A, direction = "lre", original = "lre", level = 0 } - elseif dir == "+TRT" then - list[size] = { char = 0x202B, direction = "rle", original = "rle", level = 0 } - elseif dir == "-TLT" or dir == "-TRT" then - list[size] = { char = 0x202C, direction = "pdf", original = "pdf", level = 0 } + local direction, pop = getdirection(current) + if direction == lefttoright_code then + if pop then + list[size] = { char = 0x202C, direction = "pdf", original = "pdf", level = 0 } + else + list[size] = { char = 0x202A, direction = "lre", original = "lre", level = 0 } + end + elseif direction == righttoleft_code then + if pop then + list[size] = { char = 0x202C, direction = "pdf", original = "pdf", level = 0 } + else + list[size] = { char = 0x202B, direction = "rle", original = "rle", level = 0 } + end else list[size] = { char = 0xFFFC, direction = "on", original = "on", level = 0, id = id } -- object replacement character end @@ -323,27 +332,33 @@ local function find_run_limit_b_s_ws_on(list,start,limit) return start end -local function get_baselevel(head,list,size) -- todo: skip if first is object (or pass head and test for localpar) - local id = getid(head) - if id == localpar_code then - if getdir(head) == "TRT" then - return 1, "TRT", true - else - return 0, "TLT", true +local function get_baselevel(head,list,size,direction) + -- This is an adapted version: + if direction == lefttoright_code or direction == righttoleft_code then + return direction, true + elseif getid(head) == localpar_code and getsubtype(head) == 0 then + direction = getdirection(head) + if direction == lefttoright_code or direction == righttoleft_code then + return direction, true end - else - -- P2, P3 - for i=1,size do - local entry = list[i] - local direction = entry.direction - if direction == "r" or direction == "al" then - return 1, "TRT", true - elseif direction == "l" then - return 0, "TLT", true - end + end + -- for old times sake we we handle strings too + if direction == "TLT" then + return lefttoright_code, true + elseif direction == "TRT" then + return righttoleft_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 + return righttoleft_code, true + elseif direction == "l" then + return lefttoright_code, true end - return 0, "TLT", false end + return lefttoright_code, false end local function resolve_explicit(list,size,baselevel) @@ -409,7 +424,7 @@ local function resolve_explicit(list,size,baselevel) end -- X7 elseif direction == "pdf" then - if nofstack < maximum_stack then + if noifstack > 0 then local stacktop = stack[nofstack] nofstack = nofstack - 1 level = stacktop[1] @@ -418,7 +433,7 @@ local function resolve_explicit(list,size,baselevel) entry.direction = "bn" entry.remove = true elseif trace_directions then - report_directions("stack overflow at position %a with direction %a",i,direction) + report_directions("stack underflow at position %a with direction %a",i,direction) end -- X6 else @@ -679,8 +694,6 @@ local function resolve_levels(list,size,baselevel) end end --- This is not ok but we keep it as-is: - local function insert_dir_points(list,size) -- L2, but no actual reversion is done, we simply annotate where -- begindir/endddir node will be inserted. @@ -697,11 +710,11 @@ local function insert_dir_points(list,size) local begindir = nil local enddir = nil if level % 2 == 1 then - begindir = "+TRT" - enddir = "-TRT" + begindir = righttoleft_code + enddir = righttoleft_code else - begindir = "+TLT" - enddir = "-TLT" + begindir = lefttoright_code + enddir = lefttoright_code end for i=1,size do local entry = list[i] @@ -730,7 +743,6 @@ end local function apply_to_list(list,size,head,pardir) local index = 1 local current = head - local done = false while current do if index > size then report_directions("fatal error, size mismatch") @@ -751,34 +763,31 @@ 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) - setprop(d,"directions",true) + local d = new_direction(enddir,true) + -- setprop(d,"directions",true) -- setattrlist(d,current) head = insert_node_before(head,current,d) enddir = false - done = true end elseif begindir then - if id == localpar_code then + if id == localpar_code and getsubtype(current) == 0 then -- localpar should always be the 1st node - local d = new_textdir(begindir) - setprop(d,"directions",true) + local d = new_direction(begindir) + -- setprop(d,"directions",true) -- setattrlist(d,current) head, current = insert_node_after(head,current,d) begindir = nil - done = true end end if begindir then - local d = new_textdir(begindir) - setprop(d,"directions",true) + local d = new_direction(begindir) + -- setprop(d,"directions",true) -- setattrlist(d,current) head = insert_node_before(head,current,d) - done = true end local skip = entry.skip if skip and skip > 0 then @@ -788,30 +797,28 @@ local function apply_to_list(list,size,head,pardir) end end if enddir then - local d = new_textdir(enddir) - setprop(d,"directions",true) + local d = new_direction(enddir,true) + -- setprop(d,"directions",true) -- setattrlist(d,current) head, current = insert_node_after(head,current,d) - done = true end if not entry.remove then current = getnext(current) elseif remove_controls then -- X9 head, current = remove_node(head,current,true) - done = true else current = getnext(current) end index = index + 1 end - return head, done + return head end -local function process(head) - head = tonut(head) +local function process(head,direction,only_one,where) + -- This is an adapted version: local list, size = build_list(head) - local baselevel, pardir, dirfound = get_baselevel(head,list,size) -- we always have an inline dir node in context + local baselevel, dirfound = get_baselevel(head,list,size,direction) if not dirfound and trace_details then report_directions("no initial direction found, gambling") end @@ -825,8 +832,7 @@ local function process(head) report_directions("after : %s",show_list(list,size,"direction")) report_directions("result : %s",show_done(list,size)) end - local head, done = apply_to_list(list,size,head,pardir) - return tonode(head), done + return apply_to_list(list,size,head,baselevel) end directions.installhandler(interfaces.variables.one,process) |