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if not modules then modules = { } end modules ['luat-ovr'] = {
version = 2.2,
comment = "companion to luatex-*.tex",
author = "Khaled Hosny, Elie Roux, Philipp Gesang",
copyright = "Luaotfload Development Team",
license = "GNU GPL v2"
}
local module_name = "luaotfload"
local texiowrite_nl = texio.write_nl
local stringformat = string.format
local tableconcat = table.concat
local type = type
--[[doc--
We recreate the verbosity levels previously implemented in font-nms:
==========================================================
lvl arg trace_loading trace_search suppress_output
----------------------------------------------------------
(0) -> -q ⊥ ⊥ ⊤
(1) -> ∅ ⊥ ⊥ ⊥
(2) -> -v ⊤ ⊥ ⊥
(>2) -> -vv ⊤ ⊤ ⊥
==========================================================
--doc]]--
local loglevel = 1 --- default
local logout = "log"
--- int -> bool
local set_loglevel = function (n)
if type(n) == "number" then
loglevel = n
end
return true
end
logs.setloglevel = set_loglevel
logs.set_loglevel = set_loglevel
logs.set_log_level = set_loglevel --- accomodating lazy typists
--- unit -> int
local get_loglevel = function ( )
return loglevel
end
logs.getloglevel = get_loglevel
logs.get_loglevel = get_loglevel
logs.get_log_level = get_loglevel
local set_logout = function (s)
if s == "stdout" then
logout = "term"
--else --- remains “log”
end
end
logs.set_logout = set_logout
local log = function (category, fmt, ...)
local res = { module_name, " |" }
if category then res[#res+1] = " " .. category end
if fmt then res[#res+1] = ": " .. stringformat(fmt, ...) end
texiowrite_nl(logout, tableconcat(res))
end
local stdout = function (category, fmt, ...)
local res = { module_name, " |" }
if category then res[#res+1] = " " .. category end
if fmt then res[#res+1] = ": " .. stringformat(fmt, ...) end
texiowrite_nl(tableconcat(res))
end
--- at default (zero), we aim to be quiet
local level_ids = { common = 1, loading = 2, search = 3 }
--[[doc--
The names_report logger is used more or less all over luaotfload.
Its requirements are twofold:
1) Provide two logging channels, the terminal and the log file;
2) Allow for control over verbosity levels.
The first part is addressed by specifying the log *mode* as the
first argument that can be either “log”, meaning the log file, or
“both”: log file and stdout. Anything else is taken as referring to
stdout only.
Verbosity levels, though not as fine-grained as e.g. Context’s
system of tracers, allow keeping the logging spam caused by
different subsystems manageable. By default, luaotfload will not
emit anything if things are running smoothly on level zero. Only
warning messages are relayed, while the other messages are skipped
over. (This is a little sub-optimal performance-wise since the
function calls to the logger are executed regardless.) The log
level during a Luatex run can be adjusted by setting the “loglevel”
field in config.luaotfload, or by calling logs.set_loglevel() as
defined above.
--doc]]--
local names_report = function (mode, lvl, ...)
if type(lvl) == "string" then
lvl = level_ids[lvl]
end
if not lvl then lvl = 0 end
if loglevel >= lvl then
if mode == "log" then
log (...)
elseif mode == "both" then
log (...)
stdout (...)
else
stdout (...)
end
end
end
logs.names_report = names_report
--[[doc--
The fontloader comes with the Context logging mechanisms
inaccessible. Instead, it provides dumb fallbacks based
on the functions in texio.write*() that can be overridden
by providing a function texio.reporter().
The fontloader output can be quite verbose, so we disable
it entirely by default.
--doc]]--
local texioreporter = function (message)
names_report("log", 2, message)
end
texio.reporter = texioreporter
--[[doc--
Adobe Glyph List.
-------------------------------------------------------------------
Context provides a somewhat different font-age.lua from an unclear
origin. Unfortunately, the file name it reads from is hard-coded
in font-enc.lua, so we have to replace the entire table.
This shouldn’t cause any complications. Due to its implementation
the glyph list will be loaded upon loading a OTF or TTF for the
first time during a TeX run. (If one sticks to TFM/OFM then it is
never read at all.) For this reason we can install a metatable that
looks up the file of our choosing and only falls back to the
Context one in case it cannot be found.
--doc]]--
if fonts then --- need to be running TeX
if next(fonts.encodings.agl) then
print(next, fonts.encodings.agl)
--- unnecessary because the file shouldn’t be loaded at this time
--- but we’re just making sure
fonts.encodings.agl = nil
collectgarbage"collect"
end
fonts.encodings.agl = { }
setmetatable(fonts.encodings.agl, { __index = function (t, k)
if k == "unicodes" then
local glyphlist = resolvers.findfile"luaotfload-glyphlist.lua"
if glyphlist then
names_report("log", 1, "load", "loading the Adobe glyph list")
else
glyphlist = resolvers.findfile"font-age.lua"
names_report("both", 0, "load",
"loading the extended glyph list from ConTeXt")
end
local unicodes = dofile(glyphlist)
fonts.encodings.agl = { unicodes = unicodes }
return unicodes
else
return nil
end
end })
end
-- vim:tw=71:sw=4:ts=4:expandtab
|
