add script to generate ``font-age.lua``

1 files changed, 141 insertions, 0 deletions

diff --git a/mkglyphlist b/mkglyphlist
new file mode 100755
index 0000000..954ffef
--- /dev/null
+++ b/mkglyphlist
@@ -0,0 +1,141 @@
+#!/usr/bin/env texlua
+-----------------------------------------------------------------------
+--         FILE:  mkglyphlist.lua
+--        USAGE:  ./mkglyphlist.lua 
+--  DESCRIPTION:  part of the luaotfload package
+-- REQUIREMENTS:  lua, lpeg, luasocket, the lualibs package
+--       AUTHOR:  Philipp Gesang (Phg), <phg42.2a@gmail.com>
+--      VERSION:  1.0
+--      CREATED:  04/23/2013 12:42:17 PM CEST
+-----------------------------------------------------------------------
+--                              config
+-----------------------------------------------------------------------
+local glyphfile     = "./glyphlist.txt"
+local font_age      = "./font-age.lua"
+local glyph_source  = "http://partners.adobe.com/public/developer/en/opentype/glyphlist.txt"
+
+-----------------------------------------------------------------------
+--                             includes
+-----------------------------------------------------------------------
+require"lpeg"
+require"socket"
+require"lualibs-lua"
+require"lualibs-lpeg"
+require"lualibs-table" --- for serialization
+
+local C, Cf, Cg, Ct, P, R =
+  lpeg.C, lpeg.Cf, lpeg.Cg, lpeg.Ct, lpeg.P, lpeg.R
+
+local http = socket.http
+
+-----------------------------------------------------------------------
+--                           functionality
+-----------------------------------------------------------------------
+
+local dec_of_hex = function (hex) return tonumber(hex, 16) end
+
+local separator    = P";"
+local gartenzaun   = P"#"
+local eol          = P"\n\r" + P"\r\n" + P"\r" + P"\n"
+local space        = P" "
+local alphanum     = R("az", "AZ", "09")
+local hexdigit     = R("af", "AF", "09")
+local eof_tag      = gartenzaun * P"--end"
+local header_line  = gartenzaun * (1-eol)^0 * eol
+local codepoint    = hexdigit^1
+local glyphname    = alphanum^1
+
+local definition   = Cg(C(glyphname) * separator * (C(codepoint)/ dec_of_hex))
+                   --- With combined glyphs we take only the first
+                   --- value as char-def and font-age do, and skip
+                   --- the rest.
+                   * (space * codepoint)^0
+                   * eol
+local definitions  = Cf(Ct"" * definition^1, rawset)
+
+local p_glyphs     = header_line^0 * definitions * eof_tag
+
+local get_glyphs = function (data)
+  local res = lpeg.match(p_glyphs, data)
+  if not res then
+    print("error: could not parse glyph list")
+    os.exit(-1)
+  end
+  return res
+end
+
+local file_header = [==[
+if not modules then modules = { } end modules ["font-age"] = {
+  version     = 2.200,
+  comment     = "part of the luaotfload package",
+  author      = "luaotfload team / mkglyphlist",
+  copyright   = "derived from %s",
+  original    = "Adobe Glyph List, version 2.0, September 20, 2002",
+  dataonly    = true,
+}
+
+if context then
+  logs.report("fatal error","this module is not for context")
+  os.exit(-1)
+end
+
+--[[doc--
+Everything below has been autogenerated. Run mkglyphlist to rebuild
+font-age.lua.
+--doc]]--
+
+]==]
+
+local writedata = function (data)
+  data = table.serialize(data, true)
+  data = string.format(file_header, glyph_source) .. data
+  local fh = io.open(font_age, "wb")
+  if not fh then
+    print(string.format("error: %s not writable", font_age))
+    os.exit(-1)
+  end
+  print(string.format("saving %d bytes to %s", #data, font_age))
+  fh:write(data)
+  fh:close()
+end
+
+
+local get_raw get_raw = function (retry)
+  local fh = io.open(glyphfile, "rb")
+  if fh then
+    local data = fh:read"*all"
+    fh:close()
+    if data then return data end
+  elseif not retry then --- attempt download
+    print"info: retrieving glyph list from"
+    print(glyph_source)
+    local glyphdata = http.request(glyph_source)
+    if glyphdata then
+      local fh = io.open(glyphfile, "wb")
+      if not fh then
+        print"error: glyph file not writable"
+        os.exit(-1)
+      end
+      fh:write(glyphdata)
+      fh:close()
+      return get_raw(true)
+    end
+    print"error: download failed"
+    os.exit(-1)
+  end
+  print("error: could not obtain glyph data from "..glyphfile)
+  os.exit(-1)
+end
+
+local main = function ()
+  if arg[1] then glyphfile = arg[1] end
+  if arg[2] then font_age  = arg[2] end
+
+  local data    = get_raw()
+  local parsed  = get_glyphs(data)
+  writedata(parsed)
+  return 0
+end
+
+
+return main()