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
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
|
if not modules then modules = { } end modules ['font-gds'] = {
version = 1.000,
comment = "companion to font-gds.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
-- depends on ctx
local type, next, tonumber = type, next, tonumber
local gmatch, format, lower, find, splitup = string.gmatch, string.format, string.lower, string.find, string.splitup
local texsp = tex.sp
local fonts, nodes, attributes, node = fonts, nodes, attributes, node
local trace_goodies = false trackers.register("fonts.goodies", function(v) trace_goodies = v end)
local report_goodies = logs.reporter("fonts","goodies")
local allocate = utilities.storage.allocate
local otf = fonts.handlers.otf
local afm = fonts.handlers.afm
local tfm = fonts.handlers.tfm
local registerotffeature = otf.features.register
local registerafmfeature = afm.features.register
local registertfmfeature = tfm.features.register
local fontgoodies = fonts.goodies or { }
fonts.goodies = fontgoodies
local typefaces = fonts.typefaces or allocate()
fonts.typefaces = typefaces
local data = fontgoodies.data or allocate()
fontgoodies.data = data
local list = fontgoodies.list or { }
fontgoodies.list = list -- no allocate as we want to see what is there
local addotffeature = otf.enhancers.addfeature
local findfile = resolvers.findfile
function fontgoodies.report(what,trace,goodies)
if trace_goodies or trace then
local whatever = goodies[what]
if whatever then
report_goodies("goodie %a found in %a",what,goodies.name)
end
end
end
local function loadgoodies(filename) -- maybe a merge is better
local goodies = data[filename] -- we assume no suffix is given
if goodies ~= nil then
-- found or tagged unfound
elseif type(filename) == "string" then
local fullname = findfile(file.addsuffix(filename,"lfg")) or "" -- prefered suffix
if fullname == "" then
fullname = findfile(file.addsuffix(filename,"lua")) or "" -- fallback suffix
end
if fullname == "" then
report_goodies("goodie file '%s.lfg' is not found",filename)
data[filename] = false -- signal for not found
else
goodies = dofile(fullname) or false
if not goodies then
report_goodies("goodie file %a is invalid",fullname)
return nil
elseif trace_goodies then
report_goodies("goodie file %a is loaded",fullname)
end
goodies.name = goodies.name or "no name"
for name, fnc in next, list do
fnc(goodies)
end
goodies.initialized = true
data[filename] = goodies
end
end
return goodies
end
function fontgoodies.register(name,fnc) -- will be a proper sequencer
list[name] = fnc
end
fontgoodies.load = loadgoodies
-- register goodies file
local function setgoodies(tfmdata,value)
local goodies = tfmdata.goodies
if not goodies then -- actually an error
goodies = { }
tfmdata.goodies = goodies
end
for filename in gmatch(value,"[^, ]+") do
-- we need to check for duplicates
local ok = loadgoodies(filename)
if ok then
if trace_goodies then
report_goodies("assigning goodie %a",filename)
end
goodies[#goodies+1] = ok
end
end
end
-- this will be split into good-* files and this file might become good-ini.lua
-- featuresets
local function flattenedfeatures(t,tt)
-- first set value dominates
local tt = tt or { }
for i=1,#t do
local ti = t[i]
if type(ti) == "table" then
flattenedfeatures(ti,tt)
elseif tt[ti] == nil then
tt[ti] = true
end
end
for k, v in next, t do
if type(k) ~= "number" then -- not tonumber(k)
if type(v) == "table" then
flattenedfeatures(v,tt)
elseif tt[k] == nil then
tt[k] = v
end
end
end
return tt
end
-- fonts.features.flattened = flattenedfeatures
local function prepare_features(goodies,name,set)
if set then
local ff = flattenedfeatures(set)
local fullname = goodies.name .. "::" .. name
local n, s = fonts.specifiers.presetcontext(fullname,"",ff)
goodies.featuresets[name] = s -- set
if trace_goodies then
report_goodies("feature set %a gets number %a and name %a",name,n,fullname)
end
return n
end
end
fontgoodies.prepare_features = prepare_features
local function initialize(goodies,tfmdata)
local featuresets = goodies.featuresets
local goodiesname = goodies.name
if featuresets then
if trace_goodies then
report_goodies("checking featuresets in %a",goodies.name)
end
for name, set in next, featuresets do
prepare_features(goodies,name,set)
end
end
end
fontgoodies.register("featureset",initialize)
local function setfeatureset(tfmdata,set,features)
local goodies = tfmdata.goodies -- shared ?
if goodies then
local properties = tfmdata.properties
local what
for i=1,#goodies do
-- last one wins
local g = goodies[i]
what = g.featuresets and g.featuresets[set] or what
end
if what then
for feature, value in next, what do
if features[feature] == nil then
features[feature] = value
end
end
properties.mode = what.mode or properties.mode
end
end
end
-- postprocessors (we could hash processor and share code)
function fontgoodies.registerpostprocessor(tfmdata,f,prepend)
local postprocessors = tfmdata.postprocessors
if not postprocessors then
tfmdata.postprocessors = { f }
elseif prepend then
table.insert(postprocessors,f,1)
else
table.insert(postprocessors,f)
end
end
local function setpostprocessor(tfmdata,processor)
local goodies = tfmdata.goodies
if goodies and type(processor) == "string" then
local found = { }
local asked = utilities.parsers.settings_to_array(processor)
for i=1,#goodies do
local g = goodies[i]
local p = g.postprocessors
if p then
for i=1,#asked do
local a = asked[i]
local f = p[a]
if type(f) == "function" then
found[a] = f
end
end
end
end
local postprocessors = tfmdata.postprocessors or { }
for i=1,#asked do
local a = asked[i]
local f = found[a]
if f then
postprocessors[#postprocessors+1] = f
end
end
if #postprocessors > 0 then
tfmdata.postprocessors = postprocessors
end
end
end
-- colorschemes
local colorschemes = fontgoodies.colorschemes or allocate { }
fontgoodies.colorschemes = colorschemes
colorschemes.data = colorschemes.data or { }
local function setcolorscheme(tfmdata,scheme)
if type(scheme) == "string" then
local goodies = tfmdata.goodies
-- todo : check for already defined in shared
if goodies then
local what
for i=1,#goodies do
-- last one counts
local g = goodies[i]
what = g.colorschemes and g.colorschemes[scheme] or what
end
if type(what) == "table" then
-- this is font bound but we can share them if needed
-- just as we could hash the conversions (per font)
local hash = tfmdata.resources.unicodes
local reverse = { }
local characters = tfmdata.characters
for i=1,#what do
local w = what[i]
for j=1,#w do
local name = w[j]
if name == "*" then
-- inefficient but only used for tracing anyway
for _, unicode in next, hash do
reverse[unicode] = i
end
elseif type(name) == "number" then
reverse[name] = i
elseif find(name,":") then
local start, stop = splitup(name,":")
start = tonumber(start)
stop = tonumber(stop)
if start and stop then
-- limited usage: we only deal with non reassigned
-- maybe some day I'll also support the ones with a
-- tounicode in this range
for unicode=start,stop do
if characters[unicode] then
reverse[unicode] = i
end
end
end
else
local unicode = hash[name]
if unicode then
reverse[unicode] = i
end
end
end
end
tfmdata.properties.colorscheme = reverse
return
end
end
end
tfmdata.properties.colorscheme = false
end
local fontdata = fonts.hashes.identifiers
local setnodecolor = nodes.tracers.colors.set
local traverse_id = node.traverse_id
local a_colorscheme = attributes.private('colorscheme')
local glyph = node.id("glyph")
function colorschemes.coloring(head)
local lastfont, lastscheme
local done = false
for n in traverse_id(glyph,head) do
local a = n[a_colorscheme]
if a then
local f = n.font
if f ~= lastfont then
lastscheme, lastfont = fontdata[f].properties.colorscheme, f
end
if lastscheme then
local sc = lastscheme[n.char]
if sc then
done = true
setnodecolor(n,"colorscheme:"..a..":"..sc) -- slow
end
end
end
end
return head, done
end
function colorschemes.enable()
nodes.tasks.appendaction("processors","fonts","fonts.goodies.colorschemes.coloring")
function colorschemes.enable() end
end
local function setextrafeatures(tfmdata)
local goodies = tfmdata.goodies
if goodies then
for i=1,#goodies do
local g = goodies[i]
local f = g.features
if f then
for feature, specification in next, f do
addotffeature(tfmdata.shared.rawdata,feature,specification)
registerotffeature {
name = feature,
description = format("extra: %s",feature)
}
end
end
end
end
end
-- installation (collected to keep the overview) -- also for type 1
registerotffeature {
name = "goodies",
description = "goodies on top of built in features",
initializers = {
position = 1,
base = setgoodies,
node = setgoodies,
}
}
registerotffeature {
name = "extrafeatures",
description = "extra features",
default = true,
initializers = {
position = 2,
base = setextrafeatures,
node = setextrafeatures,
}
}
registerotffeature {
name = "featureset",
description = "goodie feature set",
initializers = {
position = 3,
base = setfeatureset,
node = setfeatureset,
}
}
registerotffeature {
name = "colorscheme",
description = "goodie color scheme",
initializers = {
base = setcolorscheme,
node = setcolorscheme,
}
}
registerotffeature {
name = "postprocessor",
description = "goodie postprocessor",
initializers = {
base = setpostprocessor,
node = setpostprocessor,
}
}
-- afm
registerafmfeature {
name = "goodies",
description = "goodies on top of built in features",
initializers = {
position = 1,
base = setgoodies,
node = setgoodies,
}
}
-- tfm
registertfmfeature {
name = "goodies",
description = "goodies on top of built in features",
initializers = {
position = 1,
base = setgoodies,
node = setgoodies,
}
}
-- experiment, we have to load the definitions immediately as they precede
-- the definition so they need to be initialized in the typescript
local function initialize(goodies)
local mathgoodies = goodies.mathematics
if mathgoodies then
local virtuals = mathgoodies.virtuals
local mapfiles = mathgoodies.mapfiles
local maplines = mathgoodies.maplines
if virtuals then
for name, specification in next, virtuals do
-- beware, they are all constructed
mathematics.makefont(name,specification,goodies)
end
end
if mapfiles then
for i=1,#mapfiles do
fonts.mappings.loadfile(mapfiles[i]) -- todo: backend function
end
end
if maplines then
for i=1,#maplines do
fonts.mappings.loadline(maplines[i]) -- todo: backend function
end
end
end
end
fontgoodies.register("mathematics", initialize)
-- the following takes care of explicit file specifications
--
-- files = {
-- name = "antykwapoltawskiego",
-- list = {
-- ["AntPoltLtCond-Regular.otf"] = {
-- -- name = "antykwapoltawskiego",
-- style = "regular",
-- weight = "light",
-- width = "condensed",
-- },
-- },
-- }
-- math italics
-- it would be nice to have a \noitalics\font option
local function initialize(tfmdata)
local goodies = tfmdata.goodies
if goodies then
local shared = tfmdata.shared
for i=1,#goodies do
local mathgoodies = goodies[i].mathematics
local mathitalics = mathgoodies and mathgoodies.italics
if mathitalics then
local properties = tfmdata.properties
mathitalics = mathitalics[file.nameonly(properties.name)] or mathitalics
if mathitalics then
if trace_goodies then
report_goodies("loading mathitalics for font %a",properties.name)
end
local corrections = mathitalics.corrections
local defaultfactor = mathitalics.defaultfactor
local disableengine = mathitalics.disableengine
properties.hasitalics = true
properties.mathitalic_defaultfactor = defaultfactor -- we inherit outer one anyway (name will change)
if properties.mathitalics == nil then
properties.mathitalics = disableengine
end
if corrections then
-- As we want to set italic_correction (the context one) we need a
-- postprocessor instead of messing with the (unscaled) descriptions.
fontgoodies.registerpostprocessor(tfmdata, function(tfmdata) -- this is another tfmdata (a copy)
-- better make a helper so that we have less code being defined
local properties = tfmdata.properties
local parameters = tfmdata.parameters
local characters = tfmdata.characters
properties.hasitalics = true
properties.mathitalic_defaultfactor = defaultfactor
properties.mathitalic_defaultvalue = defaultfactor * parameters.quad
if properties.mathitalics == nil then
properties.mathitalics = disableengine
end
if trace_goodies then
report_goodies("assigning mathitalics for font %a",properties.name)
end
local mathitalics = properties.mathitalics
local quad = parameters.quad
local hfactor = parameters.hfactor
for k, v in next, corrections do
local c = characters[k]
if v > -1 and v < 1 then
v = v * quad
else
v = v * hfactor
end
c.italic_correction = v -- for context
if mathitalics then
c.italic = v -- for tex
else
c.italic = nil
end
end
end)
end
return -- maybe not as these can accumulate
end
end
end
end
end
registerotffeature {
name = "mathitalics",
description = "additional math italic corrections",
-- default = true,
initializers = {
base = initialize,
node = initialize,
}
}
-- fontgoodies.register("mathitalics", initialize)
-- files
local function initialize(goodies)
local files = goodies.files
if files then
fonts.names.register(files)
end
end
fontgoodies.register("files", initialize)
-- some day we will have a define command and then we can also do some
-- proper tracing
--
-- fonts.typefaces["antykwapoltawskiego-condensed"] = {
-- shortcut = "rm",
-- shape = "serif",
-- fontname = "antykwapoltawskiego",
-- normalweight = "light",
-- boldweight = "medium",
-- width = "condensed",
-- size = "default",
-- features = "default",
-- }
local function initialize(goodies)
local typefaces = goodies.typefaces
if typefaces then
local ft = fonts.typefaces
for k, v in next, typefaces do
ft[k] = v
end
end
end
fontgoodies.register("typefaces", initialize)
local compositions = { }
function fontgoodies.getcompositions(tfmdata)
return compositions[file.nameonly(tfmdata.properties.filename or "")]
end
local function initialize(goodies)
local gc = goodies.compositions
if gc then
for k, v in next, gc do
compositions[k] = v
end
end
end
fontgoodies.register("compositions", initialize)
-- extra treatments (on top of defaults): \loadfontgoodies[mytreatments]
local treatmentdata = fonts.treatments.data
local function initialize(goodies)
local treatments = goodies.treatments
if treatments then
for name, data in next, treatments do
treatmentdata[name] = data -- always wins
end
end
end
fontgoodies.register("treatments", initialize)
local filenames = fontgoodies.filenames or allocate()
fontgoodies.filenames = filenames
local filedata = filenames.data or allocate()
filenames.data = filedata
local function initialize(goodies) -- design sizes are registered global
local fn = goodies.filenames
if fn then
for usedname, alternativenames in next, fn do
filedata[usedname] = alternativenames
end
end
end
fontgoodies.register("filenames", initialize)
function fontgoodies.filenames.resolve(name)
local fd = filedata[name]
if fd and findfile(name) == "" then
for i=1,#fd do
local fn = fd[i]
if findfile(fn) ~= "" then
return fn
end
end
else
-- no lookup, just use the regular mechanism
end
return name
end
local designsizes = fontgoodies.designsizes or allocate()
fontgoodies.designsizes = designsizes
local designdata = designsizes.data or allocate()
designsizes.data = designdata
local function initialize(goodies) -- design sizes are registered global
local gd = goodies.designsizes
if gd then
for name, data in next, gd do
local ranges = { }
for size, file in next, data do
if size ~= "default" then
ranges[#ranges+1] = { texsp(size), file } -- also lower(file)
end
end
table.sort(ranges,function(a,b) return a[1] < b[1] end)
designdata[lower(name)] = { -- overloads, doesn't merge!
default = data.default,
ranges = ranges,
}
end
end
end
fontgoodies.register("designsizes", initialize)
function fontgoodies.designsizes.register(name,size,specification)
local d = designdata[name]
if not d then
d = {
ranges = { },
default = nil, -- so we have no default set
}
designdata[name] = d
end
if size == "default" then
d.default = specification
else
if type(size) == "string" then
size = texsp(size)
end
local ranges = d.ranges
ranges[#ranges+1] = { size, specification }
end
end
function fontgoodies.designsizes.filename(name,spec,size) -- returns nil of no match
if spec and spec ~= "" then
local data = designdata[lower(name)]
if data then
if spec == "default" then
return data.default
elseif spec == "auto" then
local ranges = data.ranges
if ranges then
for i=1,#ranges do
local r = ranges[i]
if r[1] >= size then -- todo: rounding so maybe size - 100
return r[2]
end
end
end
return data.default or (ranges and ranges[#ranges][2])
end
end
end
end
-- The following file (husayni.lfg) is the experimental setup that we used
-- for Idris font. For the moment we don't store this in the cache and quite
-- probably these files sit in one of the paths:
--
-- tex/context/fonts/goodies
-- tex/fonts/goodies/context
-- tex/fonts/data/foundry/collection
--
-- see lfg files in distribution
-- interface
commands.loadfontgoodies = fontgoodies.load
commands.enablefontcolorschemes = colorschemes.enable
-- weird place ... depends on math
local function finalize(tfmdata,feature,value)
mathematics.overloaddimensions(tfmdata,tfmdata,value)
end
registerotffeature {
name = "mathdimensions",
description = "manipulate math dimensions",
-- default = true,
manipulators = {
base = finalize,
node = finalize,
}
}
|