beta 2010.09.09 23:45

1 files changed, 70 insertions, 0 deletions

diff --git a/tex/context/base/font-ldr.lua b/tex/context/base/font-ldr.lua
new file mode 100644
index 000000000..ca4e3f98a
--- /dev/null
+++ b/tex/context/base/font-ldr.lua
@@ -0,0 +1,70 @@
+if not modules then modules = { } end modules ['font-ldr'] = {
+    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"
+}
+
+-- This module provides a replacement for fontloader.to_table
+-- and will be loaded in due time.
+
+local fields = fontloader.fields
+
+if fields then
+
+    local glyphfields
+
+    local function get_glyphs(r)
+        local t = { }
+        local g = r.glyphs
+        for i=1,r.glyphmax-1 do
+            local gi = g[i]
+            if gi then
+                if not glyphfields then
+                    glyphfields = fields(gi)
+                end
+                local h = { }
+                for i=1,#glyphfields do
+                    local s = glyphfields[i]
+                    h[s] = gi[s]
+                end
+                t[i] = h
+            end
+        end
+        return t
+    end
+
+    local function to_table(r)
+        local f = fields(r)
+        if f then
+            local t = { }
+            for i=1,#f do
+                local fi = f[i]
+                local ri = r[fi]
+                if not ri then
+                    -- skip
+                elseif fi == "glyphs" then
+                    t.glyphs = get_glyphs(r)
+                elseif fi == "subfonts" then
+                    t[fi] = ri
+                    ri.glyphs = get_glyphs(ri)
+                else
+                    t[fi] = r[fi]
+                end
+            end
+            return t
+        end
+    end
+
+    -- currently glyphs, subfont-glyphs and the main table are userdata
+
+    function fonts.to_table(raw)
+        return to_table(raw)
+    end
+
+else
+
+    fonts.to_table = fontloader.to_table
+
+end