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-rw-r--r--otfl-node-fnt.lua205
1 files changed, 0 insertions, 205 deletions
diff --git a/otfl-node-fnt.lua b/otfl-node-fnt.lua
deleted file mode 100644
index f2d8e1d..0000000
--- a/otfl-node-fnt.lua
+++ /dev/null
@@ -1,205 +0,0 @@
-if not modules then modules = { } end modules ['node-fnt'] = {
- version = 1.001,
- comment = "companion to font-ini.mkiv",
- author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
- copyright = "PRAGMA ADE / ConTeXt Development Team",
- license = "see context related readme files"
-}
-
-local next, type = next, type
-
-local trace_characters = false trackers.register("nodes.characters", function(v) trace_characters = v end)
-
-local glyph = node.id('glyph')
-
-local traverse_id = node.traverse_id
-local has_attribute = node.has_attribute
-
-local starttiming, stoptiming = statistics.starttiming, statistics.stoptiming
-
-fonts = fonts or { }
-fonts.tfm = fonts.tfm or { }
-fonts.ids = fonts.ids or { }
-
-local fontdata = fonts.ids
-
--- some tests with using an array of dynamics[id] and processes[id] demonstrated
--- that there was nothing to gain (unless we also optimize other parts)
---
--- maybe getting rid of the intermediate shared can save some time
-
--- potential speedup: check for subtype < 256 so that we can remove that test
--- elsewhere, danger: injected nodes will not be dealt with but that does not
--- happen often; we could consider processing sublists but that might need mor
--- checking later on; the current approach also permits variants
-
-if tex.attribute[0] < 0 then
-
- texio.write_nl("log","!")
- texio.write_nl("log","! Attribute 0 is reserved for ConTeXt's font feature management and has to be")
- texio.write_nl("log","! set to zero. Also, some attributes in the range 1-255 are used for special")
- texio.write_nl("log","! purposed so setting them at the TeX end might break the font handler.")
- texio.write_nl("log","!")
-
- tex.attribute[0] = 0 -- else no features
-
-end
-
-function nodes.process_characters(head)
- -- either next or not, but definitely no already processed list
- starttiming(nodes)
- local usedfonts, attrfonts, done = { }, { }, false
- local a, u, prevfont, prevattr = 0, 0, nil, 0
- for n in traverse_id(glyph,head) do
- local font, attr = n.font, has_attribute(n,0) -- zero attribute is reserved for fonts in context
- if attr and attr > 0 then
- if font ~= prevfont or attr ~= prevattr then
- local used = attrfonts[font]
- if not used then
- used = { }
- attrfonts[font] = used
- end
- if not used[attr] then
- -- we do some testing outside the function
- local tfmdata = fontdata[font]
- local shared = tfmdata.shared
- if shared then
- local dynamics = shared.dynamics
- if dynamics then
- local d = shared.set_dynamics(font,dynamics,attr) -- still valid?
- if d then
- used[attr] = d
- a = a + 1
- end
- end
- end
- end
- prevfont, prevattr = font, attr
- end
- elseif font ~= prevfont then
- prevfont, prevattr = font, 0
- local used = usedfonts[font]
- if not used then
- local tfmdata = fontdata[font]
- if tfmdata then
- local shared = tfmdata.shared -- we need to check shared, only when same features
- if shared then
- local processors = shared.processes
- if processors and #processors > 0 then
- usedfonts[font] = processors
- u = u + 1
- end
- end
- else
- -- probably nullfont
- end
- end
- else
- prevattr = attr
- end
- end
- -- we could combine these and just make the attribute nil
- if u == 1 then
- local font, processors = next(usedfonts)
- local n = #processors
- if n > 0 then
- local h, d = processors[1](head,font,false)
- head, done = h or head, done or d
- if n > 1 then
- for i=2,n do
- local h, d = processors[i](head,font,false)
- head, done = h or head, done or d
- end
- end
- end
- elseif u > 0 then
- for font, processors in next, usedfonts do
- local n = #processors
- local h, d = processors[1](head,font,false)
- head, done = h or head, done or d
- if n > 1 then
- for i=2,n do
- local h, d = processors[i](head,font,false)
- head, done = h or head, done or d
- end
- end
- end
- end
- if a == 1 then
- local font, dynamics = next(attrfonts)
- for attribute, processors in next, dynamics do -- attr can switch in between
- local n = #processors
- local h, d = processors[1](head,font,attribute)
- head, done = h or head, done or d
- if n > 1 then
- for i=2,n do
- local h, d = processors[i](head,font,attribute)
- head, done = h or head, done or d
- end
- end
- end
- elseif a > 0 then
- for font, dynamics in next, attrfonts do
- for attribute, processors in next, dynamics do -- attr can switch in between
- local n = #processors
- local h, d = processors[1](head,font,attribute)
- head, done = h or head, done or d
- if n > 1 then
- for i=2,n do
- local h, d = processors[i](head,font,attribute)
- head, done = h or head, done or d
- end
- end
- end
- end
- end
- stoptiming(nodes)
- if trace_characters then
- nodes.report(head,done)
- end
- return head, true
-end
-
-if node.protect_glyphs then
-
- nodes.protect_glyphs = node.protect_glyphs
- nodes.unprotect_glyphs = node.unprotect_glyphs
-
-else do
-
- -- initial value subtype : X000 0001 = 1 = 0x01 = char
- --
- -- expected before linebreak : X000 0000 = 0 = 0x00 = glyph
- -- X000 0010 = 2 = 0x02 = ligature
- -- X000 0100 = 4 = 0x04 = ghost
- -- X000 1010 = 10 = 0x0A = leftboundary lig
- -- X001 0010 = 18 = 0x12 = rightboundary lig
- -- X001 1010 = 26 = 0x1A = both boundaries lig
- -- X000 1100 = 12 = 0x1C = leftghost
- -- X001 0100 = 20 = 0x14 = rightghost
-
- function nodes.protect_glyphs(head)
- local done = false
- for g in traverse_id(glyph,head) do
- local s = g.subtype
- if s == 1 then
- done, g.subtype = true, 256
- elseif s <= 256 then
- done, g.subtype = true, 256 + s
- end
- end
- return done
- end
-
- function nodes.unprotect_glyphs(head)
- local done = false
- for g in traverse_id(glyph,head) do
- local s = g.subtype
- if s > 256 then
- done, g.subtype = true, s - 256
- end
- end
- return done
- end
-
-end end