diff options
| -rw-r--r-- | luaotfload-auxiliary.lua | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/luaotfload-auxiliary.lua b/luaotfload-auxiliary.lua index 64fac90..1a48914 100644 --- a/luaotfload-auxiliary.lua +++ b/luaotfload-auxiliary.lua @@ -26,6 +26,9 @@ local identifiers = fonts.hashes.identifiers local fontid = font.id local texsprint = tex.sprint +local dofile = dofile +local getmetatable = getmetatable +local setmetatable = setmetatable local utf8 = unicode.utf8 local stringlower = string.lower local stringformat = string.format @@ -227,7 +230,7 @@ luatexbase.add_to_callback( "luaotfload.aux.set_capheight") ----------------------------------------------------------------------- ---- glyphs +--- glyphs and characters ----------------------------------------------------------------------- local agl = fonts.encodings.agl @@ -321,6 +324,43 @@ end aux.name_of_slot = name_of_slot +--[[doc-- + + In Context, characters.data is where the data from char-def.lua + resides. The file is huge (>3.7 MB as of 2013) and not part of the + isolated font loader. Nevertheless, we include a partial version + generated by the mkcharacters script that contains only the + “direction” and “mirror” fields of each character defined. + +--doc]]-- + +characters = characters or { } --- should be created in basics-gen +characters.data = { } +local chardef = "luaotfload-characters" + +do + local chardata + local index = function (t, k) + if chardata == nil then + log("Loading character metadata from %s.", chardef) + chardata = dofile(kpse.find_file("luaotfload-characters.lua")) + if chardata == nil then + warning("Could not load %s; continuing with empty character table.", + chardef) + chardata = { } + end + end + return chardata[k] + end + + local mt = getmetatable(characters.data) + if mt then + mt.__index = index + else + setmetatable(characters.data, { __index = index }) + end +end + ----------------------------------------------------------------------- --- features / scripts / languages ----------------------------------------------------------------------- |