From 479745e00677d933056cf25f1fc2e904a4b9c567 Mon Sep 17 00:00:00 2001
From: Khaled Hosny <khaledhosny@eglug.org>
Date: Tue, 4 Oct 2011 01:15:57 +0200
Subject: Sync with ContTeXt beta 2011.10.03 12:59

Does not run yet.
---
 otfl-fonts-cbk.lua | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 otfl-fonts-cbk.lua

(limited to 'otfl-fonts-cbk.lua')

diff --git a/otfl-fonts-cbk.lua b/otfl-fonts-cbk.lua
new file mode 100644
index 0000000..9db94f6
--- /dev/null
+++ b/otfl-fonts-cbk.lua
@@ -0,0 +1,68 @@
+if not modules then modules = { } end modules ['luatex-fonts-cbk'] = {
+    version   = 1.001,
+    comment   = "companion to luatex-*.tex",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+if context then
+    texio.write_nl("fatal error: this module is not for context")
+    os.exit()
+end
+
+local fonts = fonts
+local nodes = nodes
+
+-- Fonts: (might move to node-gef.lua)
+
+local traverse_id = node.traverse_id
+local glyph_code  = nodes.nodecodes.glyph
+
+function nodes.handlers.characters(head)
+    local fontdata = fonts.hashes.identifiers
+    if fontdata then
+        local usedfonts, done, prevfont = { }, false, nil
+        for n in traverse_id(glyph_code,head) do
+            local font = n.font
+            if font ~= prevfont then
+                prevfont = font
+                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
+                                done = true
+                            end
+                        end
+                    end
+                end
+            end
+        end
+        if done then
+            for font, processors in next, usedfonts do
+                for i=1,#processors do
+                    local h, d = processors[i](head,font,0)
+                    head, done = h or head, done or d
+                end
+            end
+        end
+        return head, true
+    else
+        return head, false
+    end
+end
+
+function nodes.simple_font_handler(head)
+--  lang.hyphenate(head)
+    head = nodes.handlers.characters(head)
+    nodes.injections.handler(head)
+    nodes.handlers.protectglyphs(head)
+    head = node.ligaturing(head)
+    head = node.kerning(head)
+    return head
+end
-- 
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