1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
|
--
-- This is file `luaotfload.lua',
-- generated with the docstrip utility.
--
-- The original source files were:
--
-- luaotfload.dtx (with options: `lua')
-- This is a generated file.
--
-- Copyright (C) 2009-2014
-- by Elie Roux <elie.roux@telecom-bretagne.eu>
-- and Khaled Hosny <khaledhosny@eglug.org>
-- and Philipp Gesang <philipp.gesang@alumni.uni-heidelberg.de>
--
-- Home: https://github.com/lualatex/luaotfload
-- Support: <lualatex-dev@tug.org>.
--
-- This work is under the GPL v2.0 license.
--
-- This work consists of the main source file luaotfload.dtx
-- and the derived files
-- luaotfload.sty, luaotfload.lua
--
luaotfload = luaotfload or {}
local luaotfload = luaotfload
config = config or { }
config.luaotfload = config.luaotfload or { }
------.luaotfload.resolver = config.luaotfload.resolver or "normal"
config.luaotfload.resolver = config.luaotfload.resolver or "cached"
config.luaotfload.definer = config.luaotfload.definer or "patch"
config.luaotfload.compatibility = config.luaotfload.compatibility or false
config.luaotfload.loglevel = config.luaotfload.loglevel or 2
config.luaotfload.color_callback = config.luaotfload.color_callback or "pre_linebreak_filter"
config.luaotfload.prioritize = config.luaotfload.prioritize or "sys"
config.luaotfload.names_dir = config.luaotfload.names_dir or "names"
config.luaotfload.cache_dir = config.luaotfload.cache_dir or "fonts"
config.luaotfload.index_file = config.luaotfload.index_file or "luaotfload-names.lua"
config.luaotfload.formats = config.luaotfload.formats or "otf,ttf,ttc,dfont"
if not config.luaotfload.strip then
config.luaotfload.strip = true
end
luaotfload.module = {
name = "luaotfload",
version = 2.40005, --- 2.4-4
date = "2014/05/18",
description = "OpenType layout system.",
author = "Elie Roux & Hans Hagen",
copyright = "Elie Roux",
license = "GPL v2.0"
}
local luatexbase = luatexbase
local setmetatable = setmetatable
local type, next = type, next
local kpsefind_file = kpse.find_file
local lfsisfile = lfs.isfile
local add_to_callback, create_callback =
luatexbase.add_to_callback, luatexbase.create_callback
local reset_callback, call_callback =
luatexbase.reset_callback, luatexbase.call_callback
local dummy_function = function () end
local error, warning, info, log =
luatexbase.provides_module(luaotfload.module)
luaotfload.error = error
luaotfload.warning = warning
luaotfload.info = info
luaotfload.log = log
local luatex_version = 76
if tex.luatexversion < luatex_version then
warning("LuaTeX v%.2f is old, v%.2f is recommended.",
tex.luatexversion/100,
luatex_version /100)
--- we install a fallback for older versions as a safety
if not node.end_of_math then
local math_t = node.id"math"
local traverse_nodes = node.traverse_id
node.end_of_math = function (n)
for n in traverse_nodes(math_t, n.next) do
return n
end
end
end
end
local fl_prefix = "luaotfload" -- “luatex” for luatex-plain
local loadmodule = function (name)
require(fl_prefix .."-"..name)
end
local Cs, P, lpegmatch = lpeg.Cs, lpeg.P, lpeg.match
local p_dot, p_slash = P".", P"/"
local p_suffix = (p_dot * (1 - p_dot - p_slash)^1 * P(-1)) / ""
local p_removesuffix = Cs((p_suffix + 1)^1)
local find_vf_file = function (name)
local fullname = kpsefind_file(name, "ovf")
if not fullname then
--fullname = kpsefind_file(file.removesuffix(name), "ovf")
fullname = kpsefind_file(lpegmatch(p_removesuffix, name), "ovf")
end
if fullname then
log("loading virtual font file %s.", fullname)
end
return fullname
end
local starttime = os.gettimeofday()
local trapped_register = callback.register
callback.register = dummy_function
do
local new_attribute = luatexbase.new_attribute
local the_attributes = luatexbase.attributes
attributes = attributes or { }
attributes.private = function (name)
local attr = "luaotfload@" .. name --- used to be: “otfl@”
local number = the_attributes[attr]
if not number then
number = new_attribute(attr)
end
return number
end
end
local context_environment = { }
local push_namespaces = function ()
log("push namespace for font loader")
local normalglobal = { }
for k, v in next, _G do
normalglobal[k] = v
end
return normalglobal
end
local pop_namespaces = function (normalglobal, isolate)
if normalglobal then
local _G = _G
local mode = "non-destructive"
if isolate then mode = "destructive" end
log("pop namespace from font loader -- " .. mode)
for k, v in next, _G do
if not normalglobal[k] then
context_environment[k] = v
if isolate then
_G[k] = nil
end
end
end
for k, v in next, normalglobal do
_G[k] = v
end
-- just to be sure:
setmetatable(context_environment,_G)
else
log("irrecoverable error during pop_namespace: no globals to restore")
os.exit()
end
end
luaotfload.context_environment = context_environment
luaotfload.push_namespaces = push_namespaces
luaotfload.pop_namespaces = pop_namespaces
local our_environment = push_namespaces()
tex.attribute[0] = 0
loadmodule"fontloader.lua"
---loadmodule"font-odv.lua" --- <= Devanagari support from Context
if fonts then
if not fonts._merge_loaded_message_done_ then
log [["I am using the merged version of 'luaotfload.lua' here.]]
log [[ If you run into problems or experience unexpected]]
log [[ behaviour, and if you have ConTeXt installed you can try]]
log [[ to delete the file 'luaotfload-merged.lua' as I might]]
log [[ then use the possibly updated libraries. The merged]]
log [[ version is not supported as it is a frozen instance.]]
log [[ Problems can be reported to the ConTeXt mailing list."]]
end
fonts._merge_loaded_message_done_ = true
else--- the loading sequence is known to change, so this might have to
--- be updated with future updates!
--- do not modify it though unless there is a change to the merged
--- package!
loadmodule("l-lua.lua")
loadmodule("l-lpeg.lua")
loadmodule("l-function.lua")
loadmodule("l-string.lua")
loadmodule("l-table.lua")
loadmodule("l-io.lua")
loadmodule("l-file.lua")
loadmodule("l-boolean.lua")
loadmodule("l-math.lua")
loadmodule("util-str.lua")
loadmodule('luatex-basics-gen.lua')
loadmodule('data-con.lua')
loadmodule('luatex-basics-nod.lua')
loadmodule('font-ini.lua')
loadmodule('font-con.lua')
loadmodule('luatex-fonts-enc.lua')
loadmodule('font-cid.lua')
loadmodule('font-map.lua')
loadmodule('luatex-fonts-syn.lua')
loadmodule('luatex-fonts-tfm.lua')
loadmodule('font-oti.lua')
loadmodule('font-otf.lua')
loadmodule('font-otb.lua')
loadmodule('node-inj.lua')
loadmodule('font-ota.lua')
loadmodule('font-otn.lua')
loadmodule('font-otp.lua')--- since 2013-04-23
loadmodule('luatex-fonts-lua.lua')
loadmodule('font-def.lua')
loadmodule('luatex-fonts-def.lua')
loadmodule('luatex-fonts-ext.lua')
loadmodule('luatex-fonts-cbk.lua')
end --- non-merge fallback scope
pop_namespaces(our_environment, false)-- true)
log("fontloader loaded in %0.3f seconds", os.gettimeofday()-starttime)
callback.register = trapped_register
add_to_callback("pre_linebreak_filter",
nodes.simple_font_handler,
"luaotfload.node_processor",
1)
add_to_callback("hpack_filter",
nodes.simple_font_handler,
"luaotfload.node_processor",
1)
add_to_callback("find_vf_file",
find_vf_file, "luaotfload.find_vf_file")
loadmodule"override.lua" --- “luat-ovr”
logs.set_loglevel(config.luaotfload.loglevel)
loadmodule"loaders.lua" --- “font-pfb” new in 2.0, added 2011
loadmodule"database.lua" --- “font-nms”
loadmodule"colors.lua" --- “font-clr”
local filesuffix = file.suffix
local fileremovesuffix = file.removesuffix
local request_resolvers = fonts.definers.resolvers
local formats = fonts.formats
local names = fonts.names
formats.ofm = "type1"
fonts.encodings.known = fonts.encodings.known or { }
local resolve_file = names.crude_file_lookup
--local resolve_file = names.crude_file_lookup_verbose
local resolve_name = names.resolve_name
local file_resolver = function (specification)
local name = resolve_file (specification.name)
local suffix = filesuffix(name)
if formats[suffix] then
specification.forced = string.lower (suffix)
specification.forcedname = file.removesuffix(name)
else
specification.name = name
end
end
request_resolvers.file = file_resolver
--request_resolvers.anon = request_resolvers.name
local type1_formats = { "tfm", "ofm", }
request_resolvers.anon = function (specification)
local name = specification.name
for i=1, #type1_formats do
local format = type1_formats[i]
if resolvers.findfile(name, format) then
specification.forcedname = file.addsuffix(name, format)
specification.forced = format
return
end
end
--- under some weird circumstances absolute paths get
--- passed to the definer; we have to catch them
--- before the name: resolver misinterprets them.
name = specification.specification
local exists, _ = lfsisfile(name)
if exists then --- garbage; we do this because we are nice,
--- not because it is correct
logs.names_report("log", 1, "load", "file %q exists", name)
logs.names_report("log", 1, "load",
"... overriding borked anon: lookup with path: lookup")
specification.name = name
request_resolvers.path(specification)
return
end
request_resolvers.name(specification)
end
request_resolvers.path = function (specification)
local name = specification.name
local exists, _ = lfsisfile(name)
if not exists then -- resort to file: lookup
logs.names_report("log", 1, "load",
"path lookup of %q unsuccessful, falling back to file:",
name)
file_resolver (specification)
else
local suffix = filesuffix (name)
if formats[suffix] then
specification.forced = string.lower (suffix)
specification.name = file.removesuffix(name)
specification.forcedname = name
else
specification.name = name
end
end
end
request_resolvers.kpse = function (specification)
local name = specification.name
local suffix = filesuffix(name)
if suffix and formats[suffix] then
name = file.removesuffix(name)
if resolvers.findfile(name, suffix) then
specification.forced = string.lower (suffix)
specification.forcedname = name
return
end
end
for t, format in next, formats do --- brute force
if kpse.find_file (name, format) then
specification.forced = t
specification.name = name
return
end
end
end
--- fonts.names.resolvers.name -- Customized version of the
--- generic name resolver.
request_resolvers.name = function (specification)
local resolved, subfont = resolve_name (specification)
if resolved then
specification.resolved = resolved
specification.sub = subfont
specification.forced = string.lower (filesuffix (resolved) or "")
specification.forcedname = resolved
specification.name = fileremovesuffix (resolved)
else
file_resolver (specification)
end
end
create_callback("luaotfload.resolve_font", "simple", dummy_function)
request_resolvers.my = function (specification)
call_callback("luaotfload.resolve_font", specification)
end
create_callback("luaotfload.patch_font", "simple", dummy_function)
local read_font_file = fonts.definers.read
--- spec -> size -> id -> tmfdata
local patch_defined_font = function (specification, size, id)
local tfmdata = read_font_file(specification, size, id)
if type(tfmdata) == "table" and tfmdata.shared then
--- 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", tfmdata, specification)
end
return tfmdata
end
reset_callback "define_font"
local font_definer = config.luaotfload.definer
if font_definer == "generic" then
add_to_callback("define_font",
fonts.definers.read,
"luaotfload.define_font",
1)
elseif font_definer == "patch" then
add_to_callback("define_font",
patch_defined_font,
"luaotfload.define_font",
1)
end
loadmodule"features.lua" --- contains what was “font-ltx” and “font-otc”
loadmodule"letterspace.lua" --- extra character kerning
loadmodule"auxiliary.lua" --- additionaly high-level functionality (new)
luaotfload.aux.start_rewrite_fontname () --- to be migrated to fontspec
-- vim:tw=71:sw=4:ts=4:expandtab
--
-- End of File `luaotfload.lua'.
|