remove node-inj (contaied in merge)

1 files changed, 0 insertions, 498 deletions

diff --git a/otfl-node-inj.lua b/otfl-node-inj.lua
deleted file mode 100644
index 246aaad..0000000
--- a/otfl-node-inj.lua
+++ /dev/null
@@ -1,498 +0,0 @@
-if not modules then modules = { } end modules ['node-inj'] = {
-    version   = 1.001,
-    comment   = "companion to node-ini.mkiv",
-    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
-    copyright = "PRAGMA ADE / ConTeXt Development Team",
-    license   = "see context related readme files"
-}
-
--- This is very experimental (this will change when we have luatex > .50 and
--- a few pending thingies are available. Also, Idris needs to make a few more
--- test fonts. Btw, future versions of luatex will have extended glyph properties
--- that can be of help.
-
-local next = next
-
-local trace_injections = false  trackers.register("nodes.injections", function(v) trace_injections = v end)
-
-local report_injections = logs.reporter("nodes","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 nodepool           = nodes.pool
-local newkern            = nodepool.kern
-
-local traverse_id        = node.traverse_id
-local unset_attribute    = node.unset_attribute
-local has_attribute      = node.has_attribute
-local set_attribute      = node.set_attribute
-local copy_node          = node.copy
-local insert_node_before = node.insert_before
-local insert_node_after  = node.insert_after
-
-local markbase = attributes.private('markbase')
-local markmark = attributes.private('markmark')
-local markdone = attributes.private('markdone')
-local cursbase = attributes.private('cursbase')
-local curscurs = attributes.private('curscurs')
-local cursdone = attributes.private('cursdone')
-local kernpair = attributes.private('kernpair')
-local ligacomp = attributes.private('ligacomp')
-local fontkern = attributes.private('fontkern')
-
-if context then
-
-    local kern = nodes.pool.register(newkern())
-
-    set_attribute(kern,fontkern,1) -- we can have several, attributes are shared
-
-    newkern = function(k)
-        local c = copy_node(kern)
-        c.kern = k
-        return c
-    end
-
-end
-
--- This injector has been tested by Idris Samawi Hamid (several arabic fonts as well as
--- the rather demanding Husayni font), Khaled Hosny (latin and arabic) and Kaj Eigner
--- (arabic, hebrew and thai) and myself (whatever font I come across). I'm pretty sure
--- that this code is not 100% okay but examples are needed to figure things out.
-
-local cursives = { }
-local marks    = { }
-local kerns    = { }
-
--- Currently we do gpos/kern in a bit inofficial way but when we have the extra fields in
--- glyphnodes to manipulate ht/dp/wd explicitly I will provide an alternative; also, we
--- can share tables.
-
--- For the moment we pass the r2l key ... volt/arabtype tests .. idris: this needs
--- checking with husayni (volt and fontforge).
-
-function injections.setcursive(start,nxt,factor,rlmode,exit,entry,tfmstart,tfmnext)
-    local dx, dy = factor*(exit[1]-entry[1]), factor*(exit[2]-entry[2])
-    local ws, wn = tfmstart.width, tfmnext.width
-    local bound = #cursives + 1
-    set_attribute(start,cursbase,bound)
-    set_attribute(nxt,curscurs,bound)
-    cursives[bound] = { rlmode, dx, dy, ws, wn }
-    return dx, dy, bound
-end
-
-function injections.setpair(current,factor,rlmode,r2lflag,spec,tfmchr)
-    local x, y, w, h = factor*spec[1], factor*spec[2], factor*spec[3], factor*spec[4]
-    -- dy = y - h
-    if x ~= 0 or w ~= 0 or y ~= 0 or h ~= 0 then
-        local bound = has_attribute(current,kernpair)
-        if bound then
-            local kb = kerns[bound]
-            -- inefficient but singles have less, but weird anyway, needs checking
-            kb[2], kb[3], kb[4], kb[5] = (kb[2] or 0) + x, (kb[3] or 0) + y, (kb[4] or 0)+ w, (kb[5] or 0) + h
-        else
-            bound = #kerns + 1
-            set_attribute(current,kernpair,bound)
-            kerns[bound] = { rlmode, x, y, w, h, r2lflag, tfmchr.width }
-        end
-        return x, y, w, h, bound
-    end
-    return x, y, w, h -- no bound
-end
-
-function injections.setkern(current,factor,rlmode,x,tfmchr)
-    local dx = factor*x
-    if dx ~= 0 then
-        local bound = #kerns + 1
-        set_attribute(current,kernpair,bound)
-        kerns[bound] = { rlmode, dx }
-        return dx, bound
-    else
-        return 0, 0
-    end
-end
-
-function injections.setmark(start,base,factor,rlmode,ba,ma,index) -- ba=baseanchor, ma=markanchor
-    local dx, dy = factor*(ba[1]-ma[1]), factor*(ba[2]-ma[2])     -- the index argument is no longer used but when this
-    local bound = has_attribute(base,markbase)                    -- fails again we should pass it
-local index = 1
-    if bound then
-        local mb = marks[bound]
-        if mb then
-         -- if not index then index = #mb + 1 end
-index = #mb + 1
-            mb[index] = { dx, dy, rlmode }
-            set_attribute(start,markmark,bound)
-            set_attribute(start,markdone,index)
-            return dx, dy, bound
-        else
-            report_injections("possible problem, U+%05X is base mark without data (id: %s)",base.char,bound)
-        end
-    end
---     index = index or 1
-    index = index or 1
-    bound = #marks + 1
-    set_attribute(base,markbase,bound)
-    set_attribute(start,markmark,bound)
-    set_attribute(start,markdone,index)
-    marks[bound] = { [index] = { dx, dy, rlmode } }
-    return dx, dy, bound
-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 trace(head)
-    report_injections("begin run")
-    for n in traverse_id(glyph_code,head) do
-        if n.subtype < 256 then
-            local kp = has_attribute(n,kernpair)
-            local mb = has_attribute(n,markbase)
-            local mm = has_attribute(n,markmark)
-            local md = has_attribute(n,markdone)
-            local cb = has_attribute(n,cursbase)
-            local cc = has_attribute(n,curscurs)
-            report_injections("char U+%05X, font=%s",n.char,n.font)
-            if kp then
-                local k = kerns[kp]
-                if k[3] then
-                    report_injections("  pairkern: dir=%s, x=%s, y=%s, w=%s, h=%s",dir(k[1]),k[2] or "?",k[3] or "?",k[4] or "?",k[5] or "?")
-                else
-                    report_injections("  kern: dir=%s, dx=%s",dir(k[1]),k[2] or "?")
-                end
-            end
-            if mb then
-                report_injections("  markbase: bound=%s",mb)
-            end
-            if mm then
-                local m = marks[mm]
-                if mb then
-                    local m = m[mb]
-                    if m then
-                        report_injections("  markmark: bound=%s, index=%s, dx=%s, dy=%s",mm,md or "?",m[1] or "?",m[2] or "?")
-                    else
-                        report_injections("  markmark: bound=%s, missing index",mm)
-                    end
-                else
-                    m = m[1]
-                    report_injections("  markmark: bound=%s, dx=%s, dy=%s",mm,m and m[1] or "?",m and m[2] or "?")
-                end
-            end
-            if cb then
-                report_injections("  cursbase: bound=%s",cb)
-            end
-            if cc then
-                local c = cursives[cc]
-                report_injections("  curscurs: bound=%s, dir=%s, dx=%s, dy=%s",cc,dir(c[1]),c[2] or "?",c[3] or "?")
-            end
-        end
-    end
-    report_injections("end run")
-end
-
--- todo: reuse tables (i.e. no collection), but will be extra fields anyway
--- todo: check for attribute
-
--- We can have a fast test on a font being processed, so we can check faster for marks etc
--- but I'll make a context variant anyway.
-
-function injections.handler(head,where,keep)
-    local has_marks, has_cursives, has_kerns = next(marks), next(cursives), next(kerns)
-    if has_marks or has_cursives then
-        if trace_injections then
-            trace(head)
-        end
-        -- in the future variant we will not copy items but refs to tables
-        local done, ky, rl, valid, cx, wx, mk, nofvalid = false, { }, { }, { }, { }, { }, { }, 0
-        if has_kerns then -- move outside loop
-            local nf, tm = nil, nil
-            for n in traverse_id(glyph_code,head) do -- only needed for relevant fonts
-                if n.subtype < 256 then
-                    nofvalid = nofvalid + 1
-                    valid[nofvalid] = n
-                    if n.font ~= nf then
-                        nf = n.font
-                        tm = fontdata[nf].resources.marks
-                    end
-                    if tm then
-                        mk[n] = tm[n.char]
-                    end
-                    local k = has_attribute(n,kernpair)
-                    if k then
-                        local kk = kerns[k]
-                        if kk then
-                            local x, y, w, h = kk[2] or 0, kk[3] or 0, kk[4] or 0, kk[5] or 0
-                            local dy = y - h
-                            if dy ~= 0 then
-                                ky[n] = dy
-                            end
-                            if w ~= 0 or x ~= 0 then
-                                wx[n] = kk
-                            end
-                            rl[n] = kk[1] -- could move in test
-                        end
-                    end
-                end
-            end
-        else
-            local nf, tm = nil, nil
-            for n in traverse_id(glyph_code,head) do
-                if n.subtype < 256 then
-                    nofvalid = nofvalid + 1
-                    valid[nofvalid] = n
-                    if n.font ~= nf then
-                        nf = n.font
-                        tm = fontdata[nf].resources.marks
-                    end
-                    if tm then
-                        mk[n] = tm[n.char]
-                    end
-                end
-            end
-        end
-        if nofvalid > 0 then
-            -- we can assume done == true because we have cursives and marks
-            local cx = { }
-            if has_kerns and next(ky) then
-                for n, k in next, ky do
-                    n.yoffset = k
-                end
-            end
-            -- todo: reuse t and use maxt
-            if has_cursives then
-                local p_cursbase, p = nil, nil
-                -- since we need valid[n+1] we can also use a "while true do"
-                local t, d, maxt = { }, { }, 0
-                for i=1,nofvalid do -- valid == glyphs
-                    local n = valid[i]
-                    if not mk[n] then
-                        local n_cursbase = has_attribute(n,cursbase)
-                        if p_cursbase then
-                            local n_curscurs = has_attribute(n,curscurs)
-                            if p_cursbase == n_curscurs then
-                                local c = cursives[n_curscurs]
-                                if c then
-                                    local rlmode, dx, dy, ws, wn = c[1], c[2], c[3], c[4], c[5]
-                                    if rlmode >= 0 then
-                                        dx = dx - ws
-                                    else
-                                        dx = dx + wn
-                                    end
-                                    if dx ~= 0 then
-                                        cx[n] = dx
-                                        rl[n] = rlmode
-                                    end
-                                --  if rlmode and rlmode < 0 then
-                                        dy = -dy
-                                --  end
-                                    maxt = maxt + 1
-                                    t[maxt] = p
-                                    d[maxt] = dy
-                                else
-                                    maxt = 0
-                                end
-                            end
-                        elseif maxt > 0 then
-                            local ny = n.yoffset
-                            for i=maxt,1,-1 do
-                                ny = ny + d[i]
-                                local ti = t[i]
-                                ti.yoffset = ti.yoffset + ny
-                            end
-                            maxt = 0
-                        end
-                        if not n_cursbase and maxt > 0 then
-                            local ny = n.yoffset
-                            for i=maxt,1,-1 do
-                                ny = ny + d[i]
-                                local ti = t[i]
-                                ti.yoffset = ny
-                            end
-                            maxt = 0
-                        end
-                        p_cursbase, p = n_cursbase, n
-                    end
-                end
-                if maxt > 0 then
-                    local ny = n.yoffset
-                    for i=maxt,1,-1 do
-                        ny = ny + d[i]
-                        local ti = t[i]
-                        ti.yoffset = ny
-                    end
-                    maxt = 0
-                end
-                if not keep then
-                    cursives = { }
-                end
-            end
-            if has_marks then
-                for i=1,nofvalid do
-                    local p = valid[i]
-                    local p_markbase = has_attribute(p,markbase)
-                    if p_markbase then
-                        local mrks = marks[p_markbase]
-                        local nofmarks = #mrks
-                        for n in traverse_id(glyph_code,p.next) do
-                            local n_markmark = has_attribute(n,markmark)
-                            if p_markbase == n_markmark then
-                                local index = has_attribute(n,markdone) or 1
-                                local d = mrks[index]
-                                if d then
-                                    local rlmode = d[3]
-                                    if rlmode and rlmode >= 0 then
-                                        -- new per 2010-10-06, width adapted per 2010-02-03
-                                        -- we used to negate the width of marks because in tfm
-                                        -- that makes sense but we no longer do that so as a
-                                        -- consequence the sign of p.width was changed (we need
-                                        -- to keep an eye on it as we don't have that many fonts
-                                        -- that enter this branch .. I'm still not sure if this
-                                        -- one is right
-                                        local k = wx[p]
-                                        if k then
-                                            n.xoffset = p.xoffset + p.width + d[1] - k[2]
-                                        else
-                                         -- n.xoffset = p.xoffset + p.width + d[1]
-                                            -- lucida U\char"032F (default+mark)
-                                            n.xoffset = p.xoffset - p.width + d[1] -- 01-05-2011
-                                        end
-                                    else
-                                        local k = wx[p]
-                                        if k then
-                                            n.xoffset = p.xoffset - d[1] - k[2]
-                                        else
-                                            n.xoffset = p.xoffset - d[1]
-                                        end
-                                    end
-                                    if mk[p] then
-                                        n.yoffset = p.yoffset + d[2]
-                                    else
-                                        n.yoffset = n.yoffset + p.yoffset + d[2]
-                                    end
-                                    if nofmarks == 1 then
-                                        break
-                                    else
-                                        nofmarks = nofmarks - 1
-                                    end
-                                end
-                            else
-                                -- KE: there can be <mark> <mkmk> <mark> sequences in ligatures
-                            end
-                        end
-                    end
-                end
-                if not keep then
-                    marks = { }
-                end
-            end
-            -- todo : combine
-            if next(wx) then
-                for n, k in next, wx do
-                 -- only w can be nil (kernclasses), can be sped up when w == nil
-                    local x, w = k[2] or 0, k[4]
-                    if w then
-                        local rl = k[1] -- r2l = k[6]
-                        local wx = w - x
-                        if rl < 0 then	-- KE: don't use r2l here
-                            if wx ~= 0 then
-                                insert_node_before(head,n,newkern(wx))
-                            end
-                            if x ~= 0 then
-                                insert_node_after (head,n,newkern(x))
-                            end
-                        else
-                            if x ~= 0 then
-                                insert_node_before(head,n,newkern(x))
-                            end
-                            if wx ~= 0 then
-                                insert_node_after(head,n,newkern(wx))
-                            end
-                        end
-                    elseif x ~= 0 then
-                        -- 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)
-                        insert_node_before(head,n,newkern(x))
-                    end
-                end
-            end
-            if next(cx) then
-                for n, k in next, cx do
-                    if k ~= 0 then
-                        local rln = rl[n]
-                        if rln and rln < 0 then
-                            insert_node_before(head,n,newkern(-k))
-                        else
-                            insert_node_before(head,n,newkern(k))
-                        end
-                    end
-                end
-            end
-            if not keep then
-                kerns = { }
-            end
-            return head, true
-        elseif not keep then
-            kerns, cursives, marks = { }, { }, { }
-        end
-    elseif has_kerns then
-        if trace_injections then
-            trace(head)
-        end
-        for n in traverse_id(glyph_code,head) do
-            if n.subtype < 256 then
-                local k = has_attribute(n,kernpair)
-                if k then
-                    local kk = kerns[k]
-                    if kk then
-                        local rl, x, y, w = kk[1], kk[2] or 0, kk[3], kk[4]
-                        if y and y ~= 0 then
-                            n.yoffset = y -- todo: h ?
-                        end
-                        if w then
-                            -- copied from above
-                         -- local r2l = kk[6]
-                            local wx = w - x
-                            if rl < 0 then  -- KE: don't use r2l here
-                                if wx ~= 0 then
-                                    insert_node_before(head,n,newkern(wx))
-                                end
-                                if x ~= 0 then
-                                    insert_node_after (head,n,newkern(x))
-                                end
-                            else
-                                if x ~= 0 then
-                                    insert_node_before(head,n,newkern(x))
-                                end
-                                if wx ~= 0 then
-                                    insert_node_after(head,n,newkern(wx))
-                                end
-                            end
-                        else
-                            -- simple (e.g. kernclass kerns)
-                            if x ~= 0 then
-                                insert_node_before(head,n,newkern(x))
-                            end
-                        end
-                    end
-                end
-            end
-        end
-        if not keep then
-            kerns = { }
-        end
-        return head, true
-    else
-        -- no tracing needed
-    end
-    return head, false
-end