diff options
Diffstat (limited to 'src/fontloader/misc/fontloader-font-otn.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-otn.lua | 67 |
1 files changed, 65 insertions, 2 deletions
diff --git a/src/fontloader/misc/fontloader-font-otn.lua b/src/fontloader/misc/fontloader-font-otn.lua index b6f30c3..081630a 100644 --- a/src/fontloader/misc/fontloader-font-otn.lua +++ b/src/fontloader/misc/fontloader-font-otn.lua @@ -246,6 +246,7 @@ local zwj = 0x200D local wildcard = "*" local default = "dflt" +local whatcodes = nodes.whatcodes local nodecodes = nodes.nodecodes local glyphcodes = nodes.glyphcodes local disccodes = nodes.disccodes @@ -253,9 +254,10 @@ local disccodes = nodes.disccodes local glyph_code = nodecodes.glyph local glue_code = nodecodes.glue local disc_code = nodecodes.disc +local whatsit_code = nodecodes.whatsit local math_code = nodecodes.math -local dir_code = nodecodes.dir -local localpar_code = nodecodes.localpar +local dir_code = nodecodes.dir or whatcodes.dir +local localpar_code = nodecodes.localpar or whatcodes.localpar local discretionary_code = disccodes.discretionary local ligature_code = glyphcodes.ligature @@ -3358,6 +3360,37 @@ local function featuresprocessor(head,font,attr) comprun(start,c_run) start = getnext(start) end + elseif id == whatsit_code then + local subtype = getsubtype(start) + if subtype == dir_code then + local dir = getfield(start,"dir") + if dir == "+TLT" then + topstack = topstack + 1 + dirstack[topstack] = dir + rlmode = 1 + elseif dir == "+TRT" then + topstack = topstack + 1 + dirstack[topstack] = dir + rlmode = -1 + elseif dir == "-TLT" or dir == "-TRT" then + topstack = topstack - 1 + rlmode = dirstack[topstack] == "+TRT" and -1 or 1 + else + rlmode = rlparmode + end + elseif subtype == localpar_code then + local dir = getfield(start,"dir") + if dir == "TRT" then + rlparmode = -1 + elseif dir == "TLT" then + rlparmode = 1 + else + rlparmode = 0 + end + -- one might wonder if the par dir should be looked at, so we might as well drop the n + rlmode = rlparmode + end + start = getnext(start) elseif id == math_code then start = getnext(end_of_math(start)) elseif id == dir_code then @@ -3628,6 +3661,36 @@ local function featuresprocessor(head,font,attr) comprun(start,c_run) start = getnext(start) end + elseif id == whatsit_code then + local subtype = getsubtype(start) + if subtype == dir_code then + local dir = getfield(start,"dir") + if dir == "+TLT" then + topstack = topstack + 1 + dirstack[topstack] = dir + rlmode = 1 + elseif dir == "+TRT" then + topstack = topstack + 1 + dirstack[topstack] = dir + rlmode = -1 + elseif dir == "-TLT" or dir == "-TRT" then + topstack = topstack - 1 + rlmode = dirstack[topstack] == "+TRT" and -1 or 1 + else + rlmode = rlparmode + end + elseif subtype == localpar_code then + local dir = getfield(start,"dir") + if dir == "TRT" then + rlparmode = -1 + elseif dir == "TLT" then + rlparmode = 1 + else + rlparmode = 0 + end + rlmode = rlparmode + end + start = getnext(start) elseif id == math_code then start = getnext(end_of_math(start)) elseif id == dir_code then |