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Diffstat (limited to 'src/fontloader/misc/fontloader-font-inj.lua')
| -rw-r--r-- | src/fontloader/misc/fontloader-font-inj.lua | 1196 |
1 files changed, 0 insertions, 1196 deletions
diff --git a/src/fontloader/misc/fontloader-font-inj.lua b/src/fontloader/misc/fontloader-font-inj.lua deleted file mode 100644 index 8937021..0000000 --- a/src/fontloader/misc/fontloader-font-inj.lua +++ /dev/null @@ -1,1196 +0,0 @@ -if not modules then modules = { } end modules ['font-inj'] = { - version = 1.001, - comment = "companion to font-lib.mkiv", - author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", - copyright = "PRAGMA ADE / ConTeXt Development Team", - license = "see context related readme files", -} - --- This property based variant is not faster but looks nicer than the attribute one. We --- need to use rawget (which is apbout 4 times slower than a direct access but we cannot --- get/set that one for our purpose! This version does a bit more with discretionaries --- (and Kai has tested it with his collection of weird fonts.) - --- There is some duplicate code here (especially in the the pre/post/replace branches) but --- we go for speed. We could store a list of glyph and mark nodes when registering but it's --- cleaner to have an identification pass here. Also, I need to keep tracing in mind so --- being too clever here is dangerous. - --- The subtype test is not needed as there will be no (new) properties set, given that we --- reset the properties. - -if not nodes.properties then return end - -local next, rawget = next, rawget -local utfchar = utf.char -local fastcopy = table.fastcopy - -local trace_injections = false trackers.register("fonts.injections", function(v) trace_injections = v end) - -local report_injections = logs.reporter("fonts","injections") - -local attributes, nodes, node = attributes, nodes, node - -fonts = fonts -local fontdata = fonts.hashes.identifiers - -nodes.injections = nodes.injections or { } -local injections = nodes.injections - -local nodecodes = nodes.nodecodes -local glyph_code = nodecodes.glyph -local disc_code = nodecodes.disc -local kern_code = nodecodes.kern - -local nuts = nodes.nuts -local nodepool = nuts.pool - -local newkern = nodepool.kern - -local tonode = nuts.tonode -local tonut = nuts.tonut - -local getfield = nuts.getfield -local setfield = nuts.setfield -local getnext = nuts.getnext -local getprev = nuts.getprev -local getid = nuts.getid -local getfont = nuts.getfont -local getsubtype = nuts.getsubtype -local getchar = nuts.getchar - -local traverse_id = nuts.traverse_id -local insert_node_before = nuts.insert_before -local insert_node_after = nuts.insert_after -local find_tail = nuts.tail - -local properties = nodes.properties.data - -function injections.installnewkern(nk) - newkern = nk or newkern -end - -local nofregisteredkerns = 0 -local nofregisteredpairs = 0 -local nofregisteredmarks = 0 -local nofregisteredcursives = 0 -local keepregisteredcounts = false - -function injections.keepcounts() - keepregisteredcounts = true -end - -function injections.resetcounts() - nofregisteredkerns = 0 - nofregisteredpairs = 0 - nofregisteredmarks = 0 - nofregisteredcursives = 0 - keepregisteredcounts = false -end - --- We need to make sure that a possible metatable will not kick in unexpectedly. - --- function injections.reset(n) --- local p = rawget(properties,n) --- if p and rawget(p,"injections") then --- p.injections = nil --- end --- end - --- function injections.copy(target,source) --- local sp = rawget(properties,source) --- if sp then --- local tp = rawget(properties,target) --- local si = rawget(sp,"injections") --- if si then --- si = fastcopy(si) --- if tp then --- tp.injections = si --- else --- propertydata[target] = { --- injections = si, --- } --- end --- else --- if tp then --- tp.injections = nil --- end --- end --- end --- end - -function injections.reset(n) - local p = rawget(properties,n) - if p then - p.injections = false -- { } - else - properties[n] = false -- { injections = { } } - end -end - -function injections.copy(target,source) - local sp = rawget(properties,source) - if sp then - local tp = rawget(properties,target) - local si = rawget(sp,"injections") - if si then - si = fastcopy(si) - if tp then - tp.injections = si - else - propertydata[target] = { - injections = si, - } - end - elseif tp then - tp.injections = false -- { } - else - properties[target] = { injections = { } } - end - else - local tp = rawget(properties,target) - if tp then - tp.injections = false -- { } - else - properties[target] = false -- { injections = { } } - end - end -end - -function injections.setligaindex(n,index) - local p = rawget(properties,n) - if p then - local i = rawget(p,"injections") - if i then - i.ligaindex = index - else - p.injections = { - ligaindex = index - } - end - else - properties[n] = { - injections = { - ligaindex = index - } - } - end -end - -function injections.getligaindex(n,default) - local p = rawget(properties,n) - if p then - local i = rawget(p,"injections") - if i then - return i.ligaindex or default - end - end - return default -end - -function injections.setcursive(start,nxt,factor,rlmode,exit,entry,tfmstart,tfmnext) -- hm: nuts or nodes - local dx = factor*(exit[1]-entry[1]) - local dy = -factor*(exit[2]-entry[2]) - local ws = tfmstart.width - local wn = tfmnext.width - nofregisteredcursives = nofregisteredcursives + 1 - if rlmode < 0 then - dx = -(dx + wn) - else - dx = dx - ws - end - -- - local p = rawget(properties,start) - if p then - local i = rawget(p,"injections") - if i then - i.cursiveanchor = true - else - p.injections = { - cursiveanchor = true, - } - end - else - properties[start] = { - injections = { - cursiveanchor = true, - }, - } - end - local p = rawget(properties,nxt) - if p then - local i = rawget(p,"injections") - if i then - i.cursivex = dx - i.cursivey = dy - else - p.injections = { - cursivex = dx, - cursivey = dy, - } - end - else - properties[nxt] = { - injections = { - cursivex = dx, - cursivey = dy, - }, - } - end - return dx, dy, nofregisteredcursives -end - -function injections.setpair(current,factor,rlmode,r2lflag,spec,injection) -- r2lflag & tfmchr not used - local x = factor*spec[1] - local y = factor*spec[2] - local w = factor*spec[3] - local h = factor*spec[4] - if x ~= 0 or w ~= 0 or y ~= 0 or h ~= 0 then -- okay? - local yoffset = y - h - local leftkern = x -- both kerns are set in a pair kern compared - local rightkern = w - x -- to normal kerns where we set only leftkern - if leftkern ~= 0 or rightkern ~= 0 or yoffset ~= 0 then - nofregisteredpairs = nofregisteredpairs + 1 - if rlmode and rlmode < 0 then - leftkern, rightkern = rightkern, leftkern - end - if not injection then - injection = "injections" - end - local p = rawget(properties,current) - if p then - local i = rawget(p,injection) - if i then - if leftkern ~= 0 then - i.leftkern = (i.leftkern or 0) + leftkern - end - if rightkern ~= 0 then - i.rightkern = (i.rightkern or 0) + rightkern - end - if yoffset ~= 0 then - i.yoffset = (i.yoffset or 0) + yoffset - end - elseif leftkern ~= 0 or rightkern ~= 0 then - p[injection] = { - leftkern = leftkern, - rightkern = rightkern, - yoffset = yoffset, - } - else - p[injection] = { - yoffset = yoffset, - } - end - elseif leftkern ~= 0 or rightkern ~= 0 then - properties[current] = { - [injection] = { - leftkern = leftkern, - rightkern = rightkern, - yoffset = yoffset, - }, - } - else - properties[current] = { - [injection] = { - yoffset = yoffset, - }, - } - end - return x, y, w, h, nofregisteredpairs - end - end - return x, y, w, h -- no bound -end - --- This needs checking for rl < 0 but it is unlikely that a r2l script uses kernclasses between --- glyphs so we're probably safe (KE has a problematic font where marks interfere with rl < 0 in --- the previous case) - -function injections.setkern(current,factor,rlmode,x,injection) - local dx = factor * x - if dx ~= 0 then - nofregisteredkerns = nofregisteredkerns + 1 - local p = rawget(properties,current) - if not injection then - injection = "injections" - end - if p then - local i = rawget(p,injection) - if i then - i.leftkern = dx + (i.leftkern or 0) - else - p[injection] = { - leftkern = dx, - } - end - else - properties[current] = { - [injection] = { - leftkern = dx, - }, - } - end - return dx, nofregisteredkerns - else - return 0, 0 - end -end - -function injections.setmark(start,base,factor,rlmode,ba,ma,tfmbase,mkmk) -- ba=baseanchor, ma=markanchor - local dx, dy = factor*(ba[1]-ma[1]), factor*(ba[2]-ma[2]) - nofregisteredmarks = nofregisteredmarks + 1 - -- markanchors[nofregisteredmarks] = base - if rlmode >= 0 then - dx = tfmbase.width - dx -- see later commented ox - end - local p = rawget(properties,start) - -- hm, dejavu serif does a sloppy mark2mark before mark2base - if p then - local i = rawget(p,"injections") - if i then - if i.markmark then - -- out of order mkmk: yes or no or option - else - i.markx = dx - i.marky = dy - i.markdir = rlmode or 0 - i.markbase = nofregisteredmarks - i.markbasenode = base - i.markmark = mkmk - end - else - p.injections = { - markx = dx, - marky = dy, - markdir = rlmode or 0, - markbase = nofregisteredmarks, - markbasenode = base, - markmark = mkmk, - } - end - else - properties[start] = { - injections = { - markx = dx, - marky = dy, - markdir = rlmode or 0, - markbase = nofregisteredmarks, - markbasenode = base, - markmark = mkmk, - }, - } - end - return dx, dy, nofregisteredmarks -end - -local function dir(n) - return (n and n<0 and "r-to-l") or (n and n>0 and "l-to-r") or "unset" -end - -local function showchar(n,nested) - local char = getchar(n) - report_injections("%wfont %s, char %U, glyph %c",nested and 2 or 0,getfont(n),char,char) -end - -local function show(n,what,nested,symbol) - if n then - local p = rawget(properties,n) - if p then - local i = rawget(p,what) - if i then - local leftkern = i.leftkern or 0 - local rightkern = i.rightkern or 0 - local yoffset = i.yoffset or 0 - local markx = i.markx or 0 - local marky = i.marky or 0 - local markdir = i.markdir or 0 - local markbase = i.markbase or 0 - local cursivex = i.cursivex or 0 - local cursivey = i.cursivey or 0 - local ligaindex = i.ligaindex or 0 - local cursbase = i.cursiveanchor - local margin = nested and 4 or 2 - -- - if rightkern ~= 0 or yoffset ~= 0 then - report_injections("%w%s pair: lx %p, rx %p, dy %p",margin,symbol,leftkern,rightkern,yoffset) - elseif leftkern ~= 0 then - report_injections("%w%s kern: dx %p",margin,symbol,leftkern) - end - if markx ~= 0 or marky ~= 0 or markbase ~= 0 then - report_injections("%w%s mark: dx %p, dy %p, dir %s, base %s",margin,symbol,markx,marky,markdir,markbase ~= 0 and "yes" or "no") - end - if cursivex ~= 0 or cursivey ~= 0 then - if cursbase then - report_injections("%w%s curs: base dx %p, dy %p",margin,symbol,cursivex,cursivey) - else - report_injections("%w%s curs: dx %p, dy %p",margin,symbol,cursivex,cursivey) - end - elseif cursbase then - report_injections("%w%s curs: base",margin,symbol) - end - if ligaindex ~= 0 then - report_injections("%w%s liga: index %i",margin,symbol,ligaindex) - end - end - end - end -end - -local function showsub(n,what,where) - report_injections("begin subrun: %s",where) - for n in traverse_id(glyph_code,n) do - showchar(n,where) - show(n,what,where," ") - end - report_injections("end subrun") -end - -local function trace(head,where) - report_injections("begin run %s: %s kerns, %s pairs, %s marks and %s cursives registered", - where or "",nofregisteredkerns,nofregisteredpairs,nofregisteredmarks,nofregisteredcursives) - local n = head - while n do - local id = getid(n) - if id == glyph_code then - showchar(n) - show(n,"injections",false," ") - show(n,"preinjections",false,"<") - show(n,"postinjections",false,">") - show(n,"replaceinjections",false,"=") - elseif id == disc_code then - local pre = getfield(n,"pre") - local post = getfield(n,"post") - local replace = getfield(n,"replace") - if pre then - showsub(pre,"preinjections","pre") - end - if post then - showsub(post,"postinjections","post") - end - if replace then - showsub(replace,"replaceinjections","replace") - end - end - n = getnext(n) - end - report_injections("end run") -end - -local function show_result(head) - local current = head - local skipping = false - while current do - local id = getid(current) - if id == glyph_code then - report_injections("char: %C, width %p, xoffset %p, yoffset %p", - getchar(current),getfield(current,"width"),getfield(current,"xoffset"),getfield(current,"yoffset")) - skipping = false - elseif id == kern_code then - report_injections("kern: %p",getfield(current,"kern")) - skipping = false - elseif not skipping then - report_injections() - skipping = true - end - current = getnext(current) - end -end - -local function collect_glyphs(head,offsets) - local glyphs, glyphi, nofglyphs = { }, { }, 0 - local marks, marki, nofmarks = { }, { }, 0 - local nf, tm = nil, nil - local n = head - - local function identify(n,what) - local f = getfont(n) - if f ~= nf then - nf = f - -- other hash in ctx: - tm = fontdata[nf].resources - if tm then - tm = tm.marks - end - end - if tm and tm[getchar(n)] then - nofmarks = nofmarks + 1 - marks[nofmarks] = n - marki[nofmarks] = "injections" - else - nofglyphs = nofglyphs + 1 - glyphs[nofglyphs] = n - glyphi[nofglyphs] = what - end - if offsets then - -- yoffsets can influence curs steps - local p = rawget(properties,n) - if p then - local i = rawget(p,what) - if i then - local yoffset = i.yoffset - if yoffset and yoffset ~= 0 then - setfield(n,"yoffset",yoffset) - end - end - end - end - end - - while n do -- only needed for relevant fonts - local id = getid(n) - if id == glyph_code then - identify(n,"injections") - elseif id == disc_code then - local d = getfield(n,"pre") - if d then - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - identify(n,"preinjections") - end - end - end - local d = getfield(n,"post") - if d then - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - identify(n,"postinjections") - end - end - end - local d = getfield(n,"replace") - if d then - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - identify(n,"replaceinjections") - end - end - end - end - n = getnext(n) - end - - return glyphs, glyphi, nofglyphs, marks, marki, nofmarks -end - -local function inject_marks(marks,marki,nofmarks) - for i=1,nofmarks do - local n = marks[i] - local pn = rawget(properties,n) - if pn then - local ni = marki[i] - local pn = rawget(pn,ni) - if pn then - local p = pn.markbasenode - if p then - local px = getfield(p,"xoffset") - local ox = 0 - local rightkern = nil - local pp = rawget(properties,p) - if pp then - pp = rawget(pp,ni) - if pp then - rightkern = pp.rightkern - end - end - if rightkern then -- x and w ~= 0 - if pn.markdir < 0 then - -- kern(w-x) glyph(p) kern(x) mark(n) - ox = px - pn.markx - rightkern - -- report_injections("r2l case 1: %p",ox) - else - -- kern(x) glyph(p) kern(w-x) mark(n) - -- ox = px - getfield(p,"width") + pn.markx - pp.leftkern - -- - -- According to Kai we don't need to handle leftkern here but I'm - -- pretty sure I've run into a case where it was needed so maybe - -- some day we need something more clever here. - -- - if false then - -- a mark with kerning - local leftkern = pp.leftkern - if leftkern then - ox = px - pn.markx - leftkern - else - ox = px - pn.markx - end - else - ox = px - pn.markx - end - end - else - -- we need to deal with fonts that have marks with width - -- if pn.markdir < 0 then - -- ox = px - pn.markx - -- -- report_injections("r2l case 3: %p",ox) - -- else - -- -- ox = px - getfield(p,"width") + pn.markx - ox = px - pn.markx - -- report_injections("l2r case 3: %p",ox) - -- end - local wn = getfield(n,"width") -- in arial marks have widths - if wn ~= 0 then - -- bad: we should center - -- insert_node_before(head,n,newkern(-wn/2)) - -- insert_node_after(head,n,newkern(-wn/2)) - pn.leftkern = -wn/2 - pn.rightkern = -wn/2 - -- wx[n] = { 0, -wn/2, 0, -wn } - end - -- so far - end - setfield(n,"xoffset",ox) - -- - local py = getfield(p,"yoffset") --- local oy = 0 --- if marks[p] then --- oy = py + pn.marky --- else --- oy = getfield(n,"yoffset") + py + pn.marky --- end - local oy = getfield(n,"yoffset") + py + pn.marky - setfield(n,"yoffset",oy) - else - -- normally this can't happen (only when in trace mode which is a special case anyway) - -- report_injections("missing mark anchor %i",pn.markbase or 0) - end - end - end - end -end - -local function inject_cursives(glyphs,glyphi,nofglyphs) - local cursiveanchor, lastanchor = nil, nil - local minc, maxc, last = 0, 0, nil - for i=1,nofglyphs do - local n = glyphs[i] - local pn = rawget(properties,n) - if pn then - pn = rawget(pn,glyphi[i]) - end - if pn then - local cursivex = pn.cursivex - if cursivex then - if cursiveanchor then - if cursivex ~= 0 then - pn.leftkern = (pn.leftkern or 0) + cursivex - end - if lastanchor then - if maxc == 0 then - minc = lastanchor - end - maxc = lastanchor - properties[cursiveanchor].cursivedy = pn.cursivey - end - last = n - else - maxc = 0 - end - elseif maxc > 0 then - local ny = getfield(n,"yoffset") - for i=maxc,minc,-1 do - local ti = glyphs[i] - ny = ny + properties[ti].cursivedy - setfield(ti,"yoffset",ny) -- why not add ? - end - maxc = 0 - end - if pn.cursiveanchor then - cursiveanchor = n - lastanchor = i - else - cursiveanchor = nil - lastanchor = nil - if maxc > 0 then - local ny = getfield(n,"yoffset") - for i=maxc,minc,-1 do - local ti = glyphs[i] - ny = ny + properties[ti].cursivedy - setfield(ti,"yoffset",ny) -- why not add ? - end - maxc = 0 - end - end - elseif maxc > 0 then - local ny = getfield(n,"yoffset") - for i=maxc,minc,-1 do - local ti = glyphs[i] - ny = ny + properties[ti].cursivedy - setfield(ti,"yoffset",getfield(ti,"yoffset") + ny) -- ? - end - maxc = 0 - cursiveanchor = nil - lastanchor = nil - end - -- if maxc > 0 and not cursiveanchor then - -- local ny = getfield(n,"yoffset") - -- for i=maxc,minc,-1 do - -- local ti = glyphs[i][1] - -- ny = ny + properties[ti].cursivedy - -- setfield(ti,"yoffset",ny) -- why not add ? - -- end - -- maxc = 0 - -- end - end - if last and maxc > 0 then - local ny = getfield(last,"yoffset") - for i=maxc,minc,-1 do - local ti = glyphs[i] - ny = ny + properties[ti].cursivedy - setfield(ti,"yoffset",ny) -- why not add ? - end - end -end - --- G +D-pre G --- D-post+ --- +D-replace+ --- --- G +D-pre +D-pre --- D-post +D-post --- +D-replace +D-replace - -local function inject_kerns(head,glist,ilist,length) -- not complete ! compare with inject_kerns_only (but unlikely disc here) - for i=1,length do - local n = glist[i] - local pn = rawget(properties,n) - if pn then - local dp = nil - local dr = nil - local ni = ilist[i] - local p = nil - if ni == "injections" then - p = getprev(n) - if p then - local id = getid(p) - if id == disc_code then - dp = getfield(p,"post") - dr = getfield(p,"replace") - end - end - end - if dp then - local i = rawget(pn,"postinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(dp) - insert_node_after(dp,t,newkern(leftkern)) - setfield(p,"post",dp) -- currently we need to force a tail refresh - end - end - end - if dr then - local i = rawget(pn,"replaceinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(dr) - insert_node_after(dr,t,newkern(leftkern)) - setfield(p,"replace",dr) -- currently we need to force a tail refresh - end - end - else - local i = rawget(pn,ni) - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - insert_node_before(head,n,newkern(leftkern)) -- type 0/2 - end - local rightkern = i.rightkern - if rightkern and rightkern ~= 0 then - insert_node_after(head,n,newkern(rightkern)) -- type 0/2 - end - end - end - end - end -end - -local function inject_everything(head,where) - head = tonut(head) - if trace_injections then - trace(head,"everything") - end - local glyphs, glyphi, nofglyphs, marks, marki, nofmarks = collect_glyphs(head,nofregisteredpairs > 0) - if nofglyphs > 0 then - if nofregisteredcursives > 0 then - inject_cursives(glyphs,glyphi,nofglyphs) - end - if nofregisteredmarks > 0 then -- and nofmarks > 0 - inject_marks(marks,marki,nofmarks) - end - inject_kerns(head,glyphs,glyphi,nofglyphs) - end - if nofmarks > 0 then - inject_kerns(head,marks,marki,nofmarks) - end - if keepregisteredcounts then - keepregisteredcounts = false - else - nofregisteredkerns = 0 - nofregisteredpairs = 0 - nofregisteredmarks = 0 - nofregisteredcursives = 0 - end - return tonode(head), true -end - --- G +D-pre G --- D-post+ --- +D-replace+ --- --- G +D-pre +D-pre --- D-post +D-post --- +D-replace +D-replace - -local function inject_kerns_only(head,where) - head = tonut(head) - if trace_injections then - trace(head,"kerns") - end - local n = head - local p = nil -- disc node when non-nil - while n do - local id = getid(n) - if id == glyph_code then - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - if p then - local d = getfield(p,"post") - if d then - local i = rawget(pn,"postinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(d) - insert_node_after(d,t,newkern(leftkern)) - setfield(p,"post",d) -- currently we need to force a tail refresh - end - end - end - local d = getfield(p,"replace") - if d then - local i = rawget(pn,"replaceinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(d) - insert_node_after(d,t,newkern(leftkern)) - setfield(p,"replace",d) -- currently we need to force a tail refresh - end - end - else - local i = rawget(pn,"injections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - setfield(p,"replace",newkern(leftkern)) - end - end - end - else - -- this is the most common case - local i = rawget(pn,"injections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - head = insert_node_before(head,n,newkern(leftkern)) - end - end - end - end - end - p = nil - elseif id == disc_code then - local d = getfield(n,"pre") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"preinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"pre",h) - end - end - local d = getfield(n,"post") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"postinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"post",h) - end - end - local d = getfield(n,"replace") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"replaceinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"replace",h) - end - end - p = n - else - p = nil - end - n = getnext(n) - end - -- - if keepregisteredcounts then - keepregisteredcounts = false - else - nofregisteredkerns = 0 - end - return tonode(head), true -end - -local function inject_pairs_only(head,where) - head = tonut(head) - if trace_injections then - trace(head,"pairs") - end - local n = head - local p = nil -- disc node when non-nil - while n do - local id = getid(n) - if id == glyph_code then - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - if p then - local d = getfield(p,"post") - if d then - local i = rawget(pn,"postinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(d) - insert_node_after(d,t,newkern(leftkern)) - setfield(p,"post",d) -- currently we need to force a tail refresh - end - -- local rightkern = i.rightkern - -- if rightkern and rightkern ~= 0 then - -- insert_node_after(head,n,newkern(rightkern)) - -- n = getnext(n) -- to be checked - -- end - end - end - local d = getfield(p,"replace") - if d then - local i = rawget(pn,"replaceinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - local t = find_tail(d) - insert_node_after(d,t,newkern(leftkern)) - setfield(p,"replace",d) -- currently we need to force a tail refresh - end - -- local rightkern = i.rightkern - -- if rightkern and rightkern ~= 0 then - -- insert_node_after(head,n,newkern(rightkern)) - -- n = getnext(n) -- to be checked - -- end - end - else - local i = rawget(pn,"injections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - setfield(p,"replace",newkern(leftkern)) - end - -- local rightkern = i.rightkern - -- if rightkern and rightkern ~= 0 then - -- insert_node_after(head,n,newkern(rightkern)) - -- n = getnext(n) -- to be checked - -- end - end - end - else - -- this is the most common case - local i = rawget(pn,"injections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - head = insert_node_before(head,n,newkern(leftkern)) - end - local rightkern = i.rightkern - if rightkern and rightkern ~= 0 then - insert_node_after(head,n,newkern(rightkern)) - n = getnext(n) -- to be checked - end - local yoffset = i.yoffset - if yoffset and yoffset ~= 0 then - setfield(n,"yoffset",yoffset) - end - end - end - end - end - p = nil - elseif id == disc_code then - local d = getfield(n,"pre") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"preinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - local rightkern = i.rightkern - if rightkern and rightkern ~= 0 then - insert_node_after(head,n,newkern(rightkern)) - n = getnext(n) -- to be checked - end - local yoffset = i.yoffset - if yoffset and yoffset ~= 0 then - setfield(n,"yoffset",yoffset) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"pre",h) - end - end - local d = getfield(n,"post") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"postinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - local rightkern = i.rightkern - if rightkern and rightkern ~= 0 then - insert_node_after(head,n,newkern(rightkern)) - n = getnext(n) -- to be checked - end - local yoffset = i.yoffset - if yoffset and yoffset ~= 0 then - setfield(n,"yoffset",yoffset) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"post",h) - end - end - local d = getfield(n,"replace") - if d then - local h = d - for n in traverse_id(glyph_code,d) do - if getsubtype(n) < 256 then - local pn = rawget(properties,n) - if pn then - local i = rawget(pn,"replaceinjections") - if i then - local leftkern = i.leftkern - if leftkern and leftkern ~= 0 then - h = insert_node_before(h,n,newkern(leftkern)) - end - local rightkern = i.rightkern - if rightkern and rightkern ~= 0 then - insert_node_after(head,n,newkern(rightkern)) - n = getnext(n) -- to be checked - end - local yoffset = i.yoffset - if yoffset and yoffset ~= 0 then - setfield(n,"yoffset",yoffset) - end - end - end - else - break - end - end - if h ~= d then - setfield(n,"replace",h) - end - end - p = n - else - p = nil - end - n = getnext(n) - end - -- - if keepregisteredcounts then - keepregisteredcounts = false - else - nofregisteredpairs = 0 - nofregisteredkerns = 0 - end - return tonode(head), true -end - -function injections.handler(head,where) - if nofregisteredmarks > 0 or nofregisteredcursives > 0 then - return inject_everything(head,where) - elseif nofregisteredpairs > 0 then - return inject_pairs_only(head,where) - elseif nofregisteredkerns > 0 then - return inject_kerns_only(head,where) - else - return head, false - end -end |