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-rw-r--r--src/luaotfload-loaders.lua57
1 files changed, 36 insertions, 21 deletions
diff --git a/src/luaotfload-loaders.lua b/src/luaotfload-loaders.lua
index 061789c..f722d85 100644
--- a/src/luaotfload-loaders.lua
+++ b/src/luaotfload-loaders.lua
@@ -12,12 +12,7 @@
if not lualibs then error "this module requires Luaotfload" end
if not luaotfload then error "this module requires Luaotfload" end
-local logreport = luaotfload.log and luaotfload.log.report or print
-local add_to_callback = luatexbase.add_to_callback
-local create_callback = luatexbase.create_callback
-local reset_callback = luatexbase.reset_callback
-local call_callback = luatexbase.call_callback
-local dummy_function = function () end
+local logreport = luaotfload.log and luaotfload.log.report or print
local install_formats = function ()
local fonts = fonts
@@ -29,7 +24,11 @@ local install_formats = function ()
if not readers or not handlers or not formats then return false end
local aux = function (which, reader)
- if not which or type (which) ~= "string" then return false end
+ if not which or type (which) ~= "string"
+ or not reader or type (reader) ~= "function" then
+ logreport ("both", 2, "main", "error installing reader for “%s”", which)
+ return false
+ end
formats [which] = "type1"
readers [which] = reader
handlers [which] = { }
@@ -51,7 +50,7 @@ end
--doc]]--
-local definers = { } --- (string, spec -> size -> id -> tmfdata) hash_t
+local definers --- (string, spec -> size -> id -> tmfdata) hash_t
do
local read = fonts.definers.read
@@ -61,7 +60,7 @@ do
--- We need to test for the “shared” field here
--- or else the fontspec capheight callback will
--- operate on tfm fonts.
- call_callback ("luaotfload.patch_font", fontdata, specification)
+ luatexbase.call_callback ("luaotfload.patch_font", fontdata, specification)
else
call_callback ("luaotfload.patch_font_unsafe", fontdata, specification)
end
@@ -91,10 +90,12 @@ do
end
end
- definers.patch = patch
- definers.generic = read
- definers.info_patch = mk_info "patch"
- definers.info_generic = mk_info "generic"
+ definers = {
+ patch = patch,
+ generic = read,
+ info_patch = mk_info "patch",
+ info_generic = mk_info "generic",
+ }
end
--[[doc--
@@ -110,18 +111,32 @@ end
--doc]]--
+local install_callbacks = function ()
+ local create_callback = luatexbase.create_callback
+ local dummy_function = function () end
+ create_callback ("luaotfload.patch_font", "simple", dummy_function)
+ create_callback ("luaotfload.patch_font_unsafe", "simple", dummy_function)
+ luatexbase.reset_callback "define_font"
+ local definer = config.luaotfload.run.definer
+ luatexbase.add_to_callback ("define_font",
+ definers[definer or "patch"],
+ "luaotfload.define_font",
+ 1)
+ return true
+end
+
return {
install = function ()
+ local ret = true
if not install_formats () then
logreport ("both", 0, "main", "error initializing OFM/PF{A,B} loaders")
+ ret = false
end
- create_callback("luaotfload.patch_font", "simple", dummy_function)
- create_callback("luaotfload.patch_font_unsafe", "simple", dummy_function)
-
- reset_callback "define_font"
- local definer = config.luaotfload.run.definer
- add_to_callback ("define_font", definers[definer or "patch"],
- "luaotfload.define_font", 1)
+ if not install_callbacks () then
+ logreport ("both", 0, "main", "error installing font loader callbacks")
+ ret = false
+ end
+ return ret
end
}
--- vim:tw=71:sw=2:ts=2:expandtab
+-- vim:tw=79:sw=2:ts=2:expandtab