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-rw-r--r--src/fontloader/runtime/fontloader-reference.lua155
1 files changed, 104 insertions, 51 deletions
diff --git a/src/fontloader/runtime/fontloader-reference.lua b/src/fontloader/runtime/fontloader-reference.lua
index 59e985d..e6738ea 100644
--- a/src/fontloader/runtime/fontloader-reference.lua
+++ b/src/fontloader/runtime/fontloader-reference.lua
@@ -1,6 +1,6 @@
-- merged file : c:/data/develop/context/sources/luatex-fonts-merged.lua
-- parent file : c:/data/develop/context/sources/luatex-fonts.lua
--- merge date : 07/01/16 16:28:20
+-- merge date : 07/13/16 15:09:54
do -- begin closure to overcome local limits and interference
@@ -16267,7 +16267,7 @@ local registertracker=trackers.register
local trace_injections=false registertracker("fonts.injections",function(v) trace_injections=v end)
local trace_marks=false registertracker("fonts.injections.marks",function(v) trace_marks=v end)
local trace_cursive=false registertracker("fonts.injections.cursive",function(v) trace_cursive=v end)
-local trace_spaces=false registertracker("otf.spaces",function(v) trace_spaces=v end)
+local trace_spaces=false registertracker("fonts.injections.spaces",function(v) trace_spaces=v end)
local use_advance=false directives.register("fonts.injections.advance",function(v) use_advance=v end)
local report_injections=logs.reporter("fonts","injections")
local report_spaces=logs.reporter("fonts","spaces")
@@ -17149,6 +17149,10 @@ local function inject_everything(head,where)
nofmarks=nofmarks+1
marks[nofmarks]=current
else
+local yoffset=i.yoffset
+if yoffset and yoffset~=0 then
+ setfield(current,"yoffset",yoffset)
+end
if hascursives then
local cursivex=i.cursivex
if cursivex then
@@ -17200,10 +17204,6 @@ local function inject_everything(head,where)
cursiveanchor=nil
end
end
- local yoffset=i.yoffset
- if yoffset and yoffset~=0 then
- setfield(current,"yoffset",yoffset)
- end
local leftkern=i.leftkern
if leftkern and leftkern~=0 then
insert_node_before(head,current,newkern(leftkern))
@@ -17450,6 +17450,37 @@ function nodes.injections.setspacekerns(font,sequence)
triggers={ [font]=sequence }
end
end
+local getthreshold
+if context then
+ local threshold=1
+ local parameters=fonts.hashes.parameters
+ directives.register("otf.threshold",function(v) threshold=tonumber(v) or 1 end)
+ getthreshold=function(font)
+ local p=parameters[font]
+ local f=p.factor
+ local s=p.spacing
+ local t=threshold*(s and s.width or p.space or 0)-2
+ return t>0 and t or 0,f
+ end
+else
+ injections.threshold=0
+ getthreshold=function(font)
+ local p=fontdata[font].parameters
+ local f=p.factor
+ local s=p.spacing
+ local t=injections.threshold*(s and s.width or p.space or 0)-2
+ return t>0 and t or 0,f
+ end
+end
+injections.getthreshold=getthreshold
+function injections.isspace(n,threshold)
+ if getid(n)==glue_code then
+ local w=getfield(n,"width")
+ if threshold and w>threshold then
+ return 32
+ end
+ end
+end
local function injectspaces(head)
if not triggers then
return head,false
@@ -17465,10 +17496,9 @@ local function injectspaces(head)
local function updatefont(font,trig)
leftkerns=trig.left
rightkerns=trig.right
- local par=fontdata[font].parameters
- factor=par.factor
- threshold=par.spacing.width-1
lastfont=font
+ threshold,
+ factor=getthreshold(font)
end
for n in traverse_id(glue_code,tonut(head)) do
local prev,next=getboth(n)
@@ -17487,7 +17517,7 @@ local function injectspaces(head)
end
end
if prevchar then
- local font=getfont(next)
+ local font=getfont(prev)
local trig=triggers[font]
if trig then
if lastfont~=font then
@@ -17500,7 +17530,7 @@ local function injectspaces(head)
end
if leftkern then
local old=getfield(n,"width")
- if old>=threshold then
+ if old>threshold then
if rightkern then
local new=old+(leftkern+rightkern)*factor
if trace_spaces then
@@ -17519,7 +17549,7 @@ local function injectspaces(head)
leftkern=false
elseif rightkern then
local old=getfield(n,"width")
- if old>=threshold then
+ if old>threshold then
local new=old+rightkern*factor
if trace_spaces then
report_spaces("[%p -> %p] %C",nextchar,old,new)
@@ -17970,11 +18000,7 @@ local trace_kernruns=false registertracker("otf.kernruns",function(v) trace_kern
local trace_discruns=false registertracker("otf.discruns",function(v) trace_discruns=v end)
local trace_compruns=false registertracker("otf.compruns",function(v) trace_compruns=v end)
local trace_testruns=false registertracker("otf.testruns",function(v) trace_testruns=v end)
-local quit_on_no_replacement=true
-local zwnjruns=true
local optimizekerns=true
-registerdirective("otf.zwnjruns",function(v) zwnjruns=v end)
-registerdirective("otf.chain.quitonnoreplacement",function(value) quit_on_no_replacement=value end)
local report_direct=logs.reporter("fonts","otf direct")
local report_subchain=logs.reporter("fonts","otf subchain")
local report_chain=logs.reporter("fonts","otf chain")
@@ -18051,6 +18077,7 @@ local getligaindex=injections.getligaindex
local cursonce=true
local fonthashes=fonts.hashes
local fontdata=fonthashes.identifiers
+local fontfeatures=fonthashes.features
local otffeatures=fonts.constructors.features.otf
local registerotffeature=otffeatures.register
local onetimemessage=fonts.loggers.onetimemessage or function() end
@@ -18070,14 +18097,8 @@ local notmatchpre={}
local notmatchpost={}
local notmatchreplace={}
local handlers={}
-local function isspace(n)
- if getid(n)==glue_code then
- local w=getfield(n,"width")
- if w>=threshold then
- return 32
- end
- end
-end
+local isspace=injections.isspace
+local getthreshold=injections.getthreshold
local checkstep=(nodes and nodes.tracers and nodes.tracers.steppers.check) or function() end
local registerstep=(nodes and nodes.tracers and nodes.tracers.steppers.register) or function() end
local registermessage=(nodes and nodes.tracers and nodes.tracers.steppers.message) or function() end
@@ -18355,7 +18376,7 @@ end
end
return head,base
end
-local function multiple_glyphs(head,start,multiple,ignoremarks)
+local function multiple_glyphs(head,start,multiple,ignoremarks,what)
local nofmultiples=#multiple
if nofmultiples>0 then
resetinjection(start)
@@ -18369,6 +18390,17 @@ local function multiple_glyphs(head,start,multiple,ignoremarks)
insert_node_after(head,start,n)
start=n
end
+ if what==true then
+ elseif what>1 then
+ local m=multiple[nofmultiples]
+ for i=2,what do
+ local n=copy_node(start)
+ resetinjection(n)
+ setchar(n,m)
+ insert_node_after(head,start,n)
+ start=n
+ end
+ end
end
return head,start,true
else
@@ -18439,7 +18471,7 @@ function handlers.gsub_multiple(head,start,dataset,sequence,multiple)
if trace_multiples then
logprocess("%s: replacing %s by multiple %s",pref(dataset,sequence),gref(getchar(start)),gref(multiple))
end
- return multiple_glyphs(head,start,multiple,sequence.flags[1])
+ return multiple_glyphs(head,start,multiple,sequence.flags[1],dataset[1])
end
function handlers.gsub_ligature(head,start,dataset,sequence,ligature)
local current=getnext(start)
@@ -18894,7 +18926,7 @@ function chainprocs.gsub_multiple(head,start,stop,dataset,sequence,currentlookup
if trace_multiples then
logprocess("%s: replacing %s by multiple characters %s",cref(dataset,sequence),gref(startchar),gref(replacement))
end
- return multiple_glyphs(head,start,replacement,sequence.flags[1])
+ return multiple_glyphs(head,start,replacement,sequence.flags[1],dataset[1])
end
return head,start,false
end
@@ -18906,7 +18938,7 @@ function chainprocs.gsub_alternate(head,start,stop,dataset,sequence,currentlooku
end
local kind=dataset[4]
local what=dataset[1]
- local value=what==true and tfmdata.shared.features[kind] or what
+ local value=what==true and tfmdata.shared.features[kind] or what
local current=start
while current do
local currentchar=ischar(current)
@@ -19847,16 +19879,13 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode)
end
end
prev=getprev(prev)
- elseif seq[n][32] then
+ elseif seq[n][32] and isspace(prev,threshold) then
n=n-1
prev=getprev(prev)
else
match=false
break
end
- elseif seq[n][32] then
- n=n-1
- prev=getprev(prev)
else
match=false
break
@@ -19970,15 +19999,13 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode)
else
end
current=getnext(current)
- elseif seq[n][32] then
+ elseif seq[n][32] and isspace(current,threshold) then
n=n+1
+ current=getnext(current)
else
match=false
break
end
- elseif seq[n][32] then
- n=n+1
- current=getnext(current)
else
match=false
break
@@ -20073,7 +20100,7 @@ local function handle_contextchain(head,start,dataset,sequence,contexts,rlmode)
if replacements then
head,start,done=reversesub(head,start,last,dataset,sequence,replacements,rlmode)
else
- done=quit_on_no_replacement
+ done=true
if trace_contexts then
logprocess("%s: skipping match",cref(dataset,sequence))
end
@@ -20222,10 +20249,10 @@ local function kernrun(disc,k_run,font,attr,...)
break
end
end
- if prev and (pre or replace) and not ischar(prev,font) then
+ if prev and not ischar(prev,font) then
prev=false
end
- if next and (post or replace) and not ischar(next,font) then
+ if next and not ischar(next,font) then
next=false
end
if pre then
@@ -20651,8 +20678,8 @@ local function featuresprocessor(head,font,attr)
descriptions=tfmdata.descriptions
characters=tfmdata.characters
marks=tfmdata.resources.marks
- factor=tfmdata.parameters.factor
- threshold=tfmdata.parameters.spacing.width or 65536*10
+ threshold,
+ factor=getthreshold(font)
elseif currentfont~=font then
report_warning("nested call with a different font, level %s, quitting",nesting)
nesting=nesting-1
@@ -20680,15 +20707,12 @@ local function featuresprocessor(head,font,attr)
local steps=sequence.steps
local nofsteps=sequence.nofsteps
if not steps then
- local h,d,ok=handler(head,start,dataset,sequence,nil,nil,nil,0,font,attr)
+ local h,d,ok=handler(head,head,dataset,sequence,nil,nil,nil,0,font,attr)
if ok then
success=true
if h then
head=h
end
- if d then
- start=d
- end
end
elseif typ=="gsub_reversecontextchain" then
local start=find_node_tail(head)
@@ -20873,9 +20897,25 @@ otf.nodemodeinitializer=featuresinitializer
otf.featuresprocessor=featuresprocessor
otf.handlers=handlers
local setspacekerns=nodes.injections.setspacekerns if not setspacekerns then os.exit() end
-function otf.handlers.trigger_space_kerns(head,start,dataset,sequence,_,_,_,_,font,attr)
- setspacekerns(font,sequence)
- return head,start,true
+if fontfeatures then
+ function otf.handlers.trigger_space_kerns(head,start,dataset,sequence,_,_,_,_,font,attr)
+ local features=fontfeatures[font]
+ local enabled=features.spacekern==true and features.kern==true
+ if enabled then
+ setspacekerns(font,sequence)
+ end
+ return head,start,enabled
+ end
+else
+ function otf.handlers.trigger_space_kerns(head,start,dataset,sequence,_,_,_,_,font,attr)
+ local shared=fontdata[font].shared
+ local features=shared and shared.features
+ local enabled=features and features.spacekern==true and features.kern==true
+ if enabled then
+ setspacekerns(font,sequence)
+ end
+ return head,start,enabled
+ end
end
local function hasspacekerns(data)
local sequences=data.resources.sequences
@@ -20909,8 +20949,8 @@ otf.readers.registerextender {
local function spaceinitializer(tfmdata,value)
local resources=tfmdata.resources
local spacekerns=resources and resources.spacekerns
- if spacekerns==nil then
- local properties=tfmdata.properties
+ local properties=tfmdata.properties
+ if value and spacekerns==nil then
if properties and properties.hasspacekerns then
local sequences=resources.sequences
local left={}
@@ -20923,7 +20963,20 @@ local function spaceinitializer(tfmdata,value)
if steps then
local kern=sequence.features.kern
if kern then
- feat=feat or kern
+ if feat then
+ for script,languages in next,kern do
+ local f=feat[k]
+ if f then
+ for l in next,languages do
+ f[l]=true
+ end
+ else
+ feat[script]=languages
+ end
+ end
+ else
+ feat=kern
+ end
for i=1,#steps do
local step=steps[i]
local coverage=step.coverage