[status,import,fontloader] add luatex-plain-tfm.lua and update scripts

1 files changed, 120 insertions, 0 deletions

diff --git a/src/fontloader/misc/fontloader-plain-tfm.lua b/src/fontloader/misc/fontloader-plain-tfm.lua
new file mode 100644
index 0000000..4a08fb4
--- /dev/null
+++ b/src/fontloader/misc/fontloader-plain-tfm.lua
@@ -0,0 +1,120 @@
+if not modules then modules = { } end modules ['luatex-plain-tfm'] = {
+    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"
+}
+
+-- \font\foo=file:luatex-plain-tfm.lua:tfm=csr10;enc=csr;pfb=csr10 at 12pt
+-- \font\bar=file:luatex-plain-tfm.lua:tfm=csr10;enc=csr           at 12pt
+--
+-- \foo áäčďěíĺľňóôŕřšťúýž ff ffi \input tufte\par
+-- \bar áäčďěíĺľňóôŕřšťúýž ff ffi \input tufte\par
+
+local outfiles = { }
+
+return function(specification)
+
+    local size = specification.size
+    local name = specification.name
+    local feat = specification.features and specification.features.normal
+
+    if not feat then
+        return
+    end
+
+    local tfm = feat.tfm
+    local enc = feat.enc or tfm
+    local pfb = feat.pfb
+
+    if not tfm then
+        return
+    end
+
+    local tfmfile = tfm .. ".tfm"
+    local encfile = enc .. ".enc"
+
+    local tfmdata, id = fonts.constructors.readanddefine("file:"..tfmfile,size)
+
+    local encoding = fonts.encodings.load(encfile)
+    if encoding then
+        encoding = encoding.hash
+    else
+        encoding = false
+    end
+
+    local unicoding = fonts.encodings.agl and fonts.encodings.agl.unicodes
+
+    if tfmdata and encoding and unicoding then
+
+        tfmdata = table.copy(tfmdata) -- good enough for small fonts
+
+        local characters = { }
+        local originals  = tfmdata.characters
+        local indices    = { }
+        local parentfont = { "font", 1 }
+        local private    = fonts.constructors.privateoffset
+
+        -- create characters table
+
+        for name, index in table.sortedhash(encoding) do -- predictable order
+            local unicode  = unicoding[name]
+            local original = originals[index]
+            if not unicode then
+                unicode = private
+                private = private + 1
+                report_tfm("glyph %a in font %a gets private unicode %U",name,tfmfile,private)
+            end
+            characters[unicode] = original
+            indices[index]      = unicode
+            original.name       = name -- so one can lookup weird names
+            original.commands   = { parentfont, { "char", index } }
+        end
+
+        -- redo kerns and ligatures
+
+        for k, v in next, characters do
+            local kerns = v.kerns
+            if kerns then
+                local t = { }
+                for k, v in next, kerns do
+                    local i = indices[k]
+                    t[i] = v
+                end
+                v.kerns = t
+            end
+            local ligatures = v.ligatures
+            if ligatures then
+                local t = { }
+                for k, v in next, ligatures do
+                    t[indices[k]] = v
+                    v.char = indices[v.char]
+                end
+                v.ligatures = t
+            end
+        end
+
+        -- wrap up
+
+        tfmdata.fonts      = { { id = id } }
+        tfmdata.characters = characters
+
+        -- resources
+
+        local outfile = outfiles[tfmfile]
+
+        if outfile == nil then
+            if pfb then
+                outfile = pfb .. ".pfb"
+                pdf.mapline(tfm .. "<" .. outfile)
+            else
+                outfile = false
+            end
+            outfiles[tfmfile] = outfile
+        end
+
+    end
+
+    return tfmdata
+end