diff options
| author | Philipp Gesang <phg@phi-gamma.net> | 2016-01-22 00:42:10 +0100 |
|---|---|---|
| committer | Philipp Gesang <phg@phi-gamma.net> | 2016-01-22 00:42:16 +0100 |
| commit | a65f049165c52ff75de5498983a1d713c773471c (patch) | |
| tree | 411dc52b33113ed5069fd873e1702c2770beec37 /src/fontloader | |
| parent | 95c68d691764fd1458e68456f8cc035f6164d041 (diff) | |
| download | luaotfload-a65f049165c52ff75de5498983a1d713c773471c.tar.gz | |
[fontloader] revert features handler temporarily
Address issue #318
This reverts the changes made to font-otn.lua with commit adc43c3c24..
Certain features related to directionality are not handled correctly
with the most recent fontloader. As a temporary measure, revert the
handling code in font-otn.lua and restore the values it references.
While this appears to suppress the issue, we’ll switch back to the
upstream code once we have an actual solution.
Diffstat (limited to 'src/fontloader')
| -rw-r--r-- | src/fontloader/misc/fontloader-basics-nod.lua | 9 | ||||
| -rw-r--r-- | src/fontloader/misc/fontloader-font-otn.lua | 67 |
2 files changed, 68 insertions, 8 deletions
diff --git a/src/fontloader/misc/fontloader-basics-nod.lua b/src/fontloader/misc/fontloader-basics-nod.lua index 78f1b17..95a1744 100644 --- a/src/fontloader/misc/fontloader-basics-nod.lua +++ b/src/fontloader/misc/fontloader-basics-nod.lua @@ -51,15 +51,11 @@ nodes = { } nodes.pool = { } nodes.handlers = { } -local nodecodes = { } +local nodecodes = { } for k,v in next, node.types () do nodecodes[string.gsub(v,"_","")] = k end +local whatcodes = { } for k,v in next, node.whatsits() do whatcodes[string.gsub(v,"_","")] = k end local glyphcodes = node.subtypes("glyph") local disccodes = node.subtypes("disc") -for k, v in next, node.types() do - v = string.gsub(v,"_","") - nodecodes[k] = v - nodecodes[v] = k -end for i=0,#glyphcodes do glyphcodes[glyphcodes[i]] = i end @@ -67,6 +63,7 @@ for i=0,#disccodes do disccodes[disccodes[i]] = i end +nodes.whatcodes = whatcodes nodes.nodecodes = nodecodes nodes.glyphcodes = glyphcodes nodes.disccodes = disccodes 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 |