summaryrefslogtreecommitdiff
path: root/tex/context/base/char-ini.lua
blob: 10df66e477eefebdab349c957a1134a0d41bbbe5 (plain)
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
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
if not modules then modules = { } end modules ['char-ini'] = {
    version   = 1.001,
    comment   = "companion to char-ini.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

local tex = tex
local utf = unicode.utf8

local utfchar, utfbyte, utfvalues = utf.char, utf.byte, string.utfvalues
local concat, unpack = table.concat, table.unpack
local next, tonumber, type = next, tonumber, type
local texsprint, texprint = tex.sprint, tex.print
local format, lower, gsub, match, gmatch = string.format, string.lower, string.gsub, string.match, string.match, string.gmatch
local texsetlccode, texsetuccode, texsetsfcode, texsetcatcode  = tex.setlccode, tex.setuccode, tex.setsfcode, tex.setcatcode

local allocate, mark = utilities.storage.allocate, utilities.storage.mark

local ctxcatcodes = tex.ctxcatcodes
local texcatcodes = tex.texcatcodes

local trace_defining = false  trackers.register("characters.defining",   function(v) characters_defining = v end)

local report_defining = logs.new("characters")

--[[ldx--
<p>This module implements some methods and creates additional datastructured
from the big character table that we use for all kind of purposes:
<type>char-def.lua</type>.</p>

<p>We assume that at this point <type>characters.data</type> is already
loaded!</p>
--ldx]]--

characters       = characters or { }
local characters = characters

local data       = characters.data

if data then
    mark(data) -- why does this fail
else
    report_defining("fatal error: 'char-def.lua' is not loaded")
    os.exit()
end

if not characters.ranges then
    local ranges = allocate { }
    characters.ranges = ranges
    for k, v in next, data do
        ranges[#ranges+1] = k
    end
end

storage.register("characters/ranges",characters.ranges,"characters.ranges")

local ranges = characters.ranges

setmetatablekey(data, "__index", function(t,k)
    for r=1,#ranges do
        local rr = ranges[r] -- first in range
        if k > rr and k <= data[rr].range then
            t[k] = t[rr]
            return t[k]
        end
    end
    return nil
end )

characters.blocks = allocate {
    ["aegeannumbers"]                        = { 0x10100, 0x1013F, "Aegean Numbers" },
    ["alphabeticpresentationforms"]          = { 0x0FB00, 0x0FB4F, "Alphabetic Presentation Forms" },
    ["ancientgreekmusicalnotation"]          = { 0x1D200, 0x1D24F, "Ancient Greek Musical Notation" },
    ["ancientgreeknumbers"]                  = { 0x10140, 0x1018F, "Ancient Greek Numbers" },
    ["ancientsymbols"]                       = { 0x10190, 0x101CF, "Ancient Symbols" },
    ["arabic"]                               = { 0x00600, 0x006FF, "Arabic" },
    ["arabicpresentationformsa"]             = { 0x0FB50, 0x0FDFF, "Arabic Presentation Forms-A" },
    ["arabicpresentationformsb"]             = { 0x0FE70, 0x0FEFF, "Arabic Presentation Forms-B" },
    ["arabicsupplement"]                     = { 0x00750, 0x0077F, "Arabic Supplement" },
    ["armenian"]                             = { 0x00530, 0x0058F, "Armenian" },
    ["arrows"]                               = { 0x02190, 0x021FF, "Arrows" },
    ["balinese"]                             = { 0x01B00, 0x01B7F, "Balinese" },
    ["basiclatin"]                           = { 0x00000, 0x0007F, "Basic Latin" },
    ["bengali"]                              = { 0x00980, 0x009FF, "Bengali" },
    ["blockelements"]                        = { 0x02580, 0x0259F, "Block Elements" },
    ["bopomofo"]                             = { 0x03100, 0x0312F, "Bopomofo" },
    ["bopomofoextended"]                     = { 0x031A0, 0x031BF, "Bopomofo Extended" },
    ["boxdrawing"]                           = { 0x02500, 0x0257F, "Box Drawing" },
    ["braillepatterns"]                      = { 0x02800, 0x028FF, "Braille Patterns" },
    ["buginese"]                             = { 0x01A00, 0x01A1F, "Buginese" },
    ["buhid"]                                = { 0x01740, 0x0175F, "Buhid" },
    ["byzantinemusicalsymbols"]              = { 0x1D000, 0x1D0FF, "Byzantine Musical Symbols" },
    ["carian"]                               = { 0x102A0, 0x102DF, "Carian" },
    ["cham"]                                 = { 0x0AA00, 0x0AA5F, "Cham" },
    ["cherokee"]                             = { 0x013A0, 0x013FF, "Cherokee" },
    ["cjkcompatibility"]                     = { 0x03300, 0x033FF, "CJK Compatibility" },
    ["cjkcompatibilityforms"]                = { 0x0FE30, 0x0FE4F, "CJK Compatibility Forms" },
    ["cjkcompatibilityideographs"]           = { 0x0F900, 0x0FAFF, "CJK Compatibility Ideographs" },
    ["cjkcompatibilityideographssupplement"] = { 0x2F800, 0x2FA1F, "CJK Compatibility Ideographs Supplement" },
    ["cjkradicalssupplement"]                = { 0x02E80, 0x02EFF, "CJK Radicals Supplement" },
    ["cjkstrokes"]                           = { 0x031C0, 0x031EF, "CJK Strokes" },
    ["cjksymbolsandpunctuation"]             = { 0x03000, 0x0303F, "CJK Symbols and Punctuation" },
    ["cjkunifiedideographs"]                 = { 0x04E00, 0x09FFF, "CJK Unified Ideographs" },
    ["cjkunifiedideographsextensiona"]       = { 0x03400, 0x04DBF, "CJK Unified Ideographs Extension A" },
    ["cjkunifiedideographsextensionb"]       = { 0x20000, 0x2A6DF, "CJK Unified Ideographs Extension B" },
    ["combiningdiacriticalmarks"]            = { 0x00300, 0x0036F, "Combining Diacritical Marks" },
    ["combiningdiacriticalmarksforsymbols"]  = { 0x020D0, 0x020FF, "Combining Diacritical Marks for Symbols" },
    ["combiningdiacriticalmarkssupplement"]  = { 0x01DC0, 0x01DFF, "Combining Diacritical Marks Supplement" },
    ["combininghalfmarks"]                   = { 0x0FE20, 0x0FE2F, "Combining Half Marks" },
    ["controlpictures"]                      = { 0x02400, 0x0243F, "Control Pictures" },
    ["coptic"]                               = { 0x02C80, 0x02CFF, "Coptic" },
    ["countingrodnumerals"]                  = { 0x1D360, 0x1D37F, "Counting Rod Numerals" },
    ["cuneiform"]                            = { 0x12000, 0x123FF, "Cuneiform" },
    ["cuneiformnumbersandpunctuation"]       = { 0x12400, 0x1247F, "Cuneiform Numbers and Punctuation" },
    ["currencysymbols"]                      = { 0x020A0, 0x020CF, "Currency Symbols" },
    ["cypriotsyllabary"]                     = { 0x10800, 0x1083F, "Cypriot Syllabary" },
    ["cyrillic"]                             = { 0x00400, 0x004FF, "Cyrillic" },
    ["cyrillicextendeda"]                    = { 0x02DE0, 0x02DFF, "Cyrillic Extended-A" },
    ["cyrillicextendedb"]                    = { 0x0A640, 0x0A69F, "Cyrillic Extended-B" },
    ["cyrillicsupplement"]                   = { 0x00500, 0x0052F, "Cyrillic Supplement" },
    ["deseret"]                              = { 0x10400, 0x1044F, "Deseret" },
    ["devanagari"]                           = { 0x00900, 0x0097F, "Devanagari" },
    ["dingbats"]                             = { 0x02700, 0x027BF, "Dingbats" },
    ["dominotiles"]                          = { 0x1F030, 0x1F09F, "Domino Tiles" },
    ["enclosedalphanumerics"]                = { 0x02460, 0x024FF, "Enclosed Alphanumerics" },
    ["enclosedcjklettersandmonths"]          = { 0x03200, 0x032FF, "Enclosed CJK Letters and Months" },
    ["ethiopic"]                             = { 0x01200, 0x0137F, "Ethiopic" },
    ["ethiopicextended"]                     = { 0x02D80, 0x02DDF, "Ethiopic Extended" },
    ["ethiopicsupplement"]                   = { 0x01380, 0x0139F, "Ethiopic Supplement" },
    ["generalpunctuation"]                   = { 0x02000, 0x0206F, "General Punctuation" },
    ["geometricshapes"]                      = { 0x025A0, 0x025FF, "Geometric Shapes" },
    ["georgian"]                             = { 0x010A0, 0x010FF, "Georgian" },
    ["georgiansupplement"]                   = { 0x02D00, 0x02D2F, "Georgian Supplement" },
    ["glagolitic"]                           = { 0x02C00, 0x02C5F, "Glagolitic" },
    ["gothic"]                               = { 0x10330, 0x1034F, "Gothic" },
    ["greekandcoptic"]                       = { 0x00370, 0x003FF, "Greek and Coptic" },
    ["greekextended"]                        = { 0x01F00, 0x01FFF, "Greek Extended" },
    ["gujarati"]                             = { 0x00A80, 0x00AFF, "Gujarati" },
    ["gurmukhi"]                             = { 0x00A00, 0x00A7F, "Gurmukhi" },
    ["halfwidthandfullwidthforms"]           = { 0x0FF00, 0x0FFEF, "Halfwidth and Fullwidth Forms" },
    ["hangulcompatibilityjamo"]              = { 0x03130, 0x0318F, "Hangul Compatibility Jamo" },
    ["hanguljamo"]                           = { 0x01100, 0x011FF, "Hangul Jamo" },
    ["hangulsyllables"]                      = { 0x0AC00, 0x0D7AF, "Hangul Syllables" },
    ["hanunoo"]                              = { 0x01720, 0x0173F, "Hanunoo" },
    ["hebrew"]                               = { 0x00590, 0x005FF, "Hebrew" },
    ["highprivateusesurrogates"]             = { 0x0DB80, 0x0DBFF, "High Private Use Surrogates" },
    ["highsurrogates"]                       = { 0x0D800, 0x0DB7F, "High Surrogates" },
    ["hiragana"]                             = { 0x03040, 0x0309F, "Hiragana" },
    ["ideographicdescriptioncharacters"]     = { 0x02FF0, 0x02FFF, "Ideographic Description Characters" },
    ["ipaextensions"]                        = { 0x00250, 0x02AF, "IPA Extensions" },
    ["kanbun"]                               = { 0x03190, 0x0319F, "Kanbun" },
    ["kangxiradicals"]                       = { 0x02F00, 0x02FDF, "Kangxi Radicals" },
    ["kannada"]                              = { 0x00C80, 0x00CFF, "Kannada" },
    ["katakana"]                             = { 0x030A0, 0x030FF, "Katakana" },
    ["katakanaphoneticextensions"]           = { 0x031F0, 0x031FF, "Katakana Phonetic Extensions" },
    ["kayahli"]                              = { 0x0A900, 0x0A92F, "Kayah Li" },
    ["kharoshthi"]                           = { 0x10A00, 0x10A5F, "Kharoshthi" },
    ["khmer"]                                = { 0x01780, 0x017FF, "Khmer" },
    ["khmersymbols"]                         = { 0x019E0, 0x019FF, "Khmer Symbols" },
    ["lao"]                                  = { 0x00E80, 0x00EFF, "Lao" },
    ["latinextendeda"]                       = { 0x00100, 0x0017F, "Latin Extended-A" },
    ["latinextendedadditional"]              = { 0x01E00, 0x01EFF, "Latin Extended Additional" },
    ["latinextendedb"]                       = { 0x00180, 0x0024F, "Latin Extended-B" },
    ["latinextendedc"]                       = { 0x02C60, 0x02C7F, "Latin Extended-C" },
    ["latinextendedd"]                       = { 0x0A720, 0x0A7FF, "Latin Extended-D" },
    ["latinsupplement"]                      = { 0x00080, 0x000FF, "Latin-1 Supplement" },
    ["lepcha"]                               = { 0x01C00, 0x01C4F, "Lepcha" },
    ["letterlikesymbols"]                    = { 0x02100, 0x0214F, "Letterlike Symbols" },
    ["limbu"]                                = { 0x01900, 0x0194F, "Limbu" },
    ["linearbideograms"]                     = { 0x10080, 0x100FF, "Linear B Ideograms" },
    ["linearbsyllabary"]                     = { 0x10000, 0x1007F, "Linear B Syllabary" },
    ["lowsurrogates"]                        = { 0x0DC00, 0x0DFFF, "Low Surrogates" },
    ["lycian"]                               = { 0x10280, 0x1029F, "Lycian" },
    ["lydian"]                               = { 0x10920, 0x1093F, "Lydian" },
    ["mahjongtiles"]                         = { 0x1F000, 0x1F02F, "Mahjong Tiles" },
    ["malayalam"]                            = { 0x00D00, 0x00D7F, "Malayalam" },
    ["mathematicalalphanumericsymbols"]      = { 0x1D400, 0x1D7FF, "Mathematical Alphanumeric Symbols" },
    ["mathematicaloperators"]                = { 0x02200, 0x022FF, "Mathematical Operators" },
    ["miscellaneousmathematicalsymbolsa"]    = { 0x027C0, 0x027EF, "Miscellaneous Mathematical Symbols-A" },
    ["miscellaneousmathematicalsymbolsb"]    = { 0x02980, 0x029FF, "Miscellaneous Mathematical Symbols-B" },
    ["miscellaneoussymbols"]                 = { 0x02600, 0x026FF, "Miscellaneous Symbols" },
    ["miscellaneoussymbolsandarrows"]        = { 0x02B00, 0x02BFF, "Miscellaneous Symbols and Arrows" },
    ["miscellaneoustechnical"]               = { 0x02300, 0x023FF, "Miscellaneous Technical" },
    ["modifiertoneletters"]                  = { 0x0A700, 0x0A71F, "Modifier Tone Letters" },
    ["mongolian"]                            = { 0x01800, 0x018AF, "Mongolian" },
    ["musicalsymbols"]                       = { 0x1D100, 0x1D1FF, "Musical Symbols" },
    ["myanmar"]                              = { 0x01000, 0x0109F, "Myanmar" },
    ["newtailue"]                            = { 0x01980, 0x019DF, "New Tai Lue" },
    ["nko"]                                  = { 0x007C0, 0x007FF, "NKo" },
    ["numberforms"]                          = { 0x02150, 0x0218F, "Number Forms" },
    ["ogham"]                                = { 0x01680, 0x0169F, "Ogham" },
    ["olchiki"]                              = { 0x01C50, 0x01C7F, "Ol Chiki" },
    ["olditalic"]                            = { 0x10300, 0x1032F, "Old Italic" },
    ["oldpersian"]                           = { 0x103A0, 0x103DF, "Old Persian" },
    ["opticalcharacterrecognition"]          = { 0x02440, 0x0245F, "Optical Character Recognition" },
    ["oriya"]                                = { 0x00B00, 0x00B7F, "Oriya" },
    ["osmanya"]                              = { 0x10480, 0x104AF, "Osmanya" },
    ["phagspa"]                              = { 0x0A840, 0x0A87F, "Phags-pa" },
    ["phaistosdisc"]                         = { 0x101D0, 0x101FF, "Phaistos Disc" },
    ["phoenician"]                           = { 0x10900, 0x1091F, "Phoenician" },
    ["phoneticextensions"]                   = { 0x01D00, 0x01D7F, "Phonetic Extensions" },
    ["phoneticextensionssupplement"]         = { 0x01D80, 0x01DBF, "Phonetic Extensions Supplement" },
    ["privateusearea"]                       = { 0x0E000, 0x0F8FF, "Private Use Area" },
    ["rejang"]                               = { 0x0A930, 0x0A95F, "Rejang" },
    ["runic"]                                = { 0x016A0, 0x016FF, "Runic" },
    ["saurashtra"]                           = { 0x0A880, 0x0A8DF, "Saurashtra" },
    ["shavian"]                              = { 0x10450, 0x1047F, "Shavian" },
    ["sinhala"]                              = { 0x00D80, 0x00DFF, "Sinhala" },
    ["smallformvariants"]                    = { 0x0FE50, 0x0FE6F, "Small Form Variants" },
    ["spacingmodifierletters"]               = { 0x002B0, 0x002FF, "Spacing Modifier Letters" },
    ["specials"]                             = { 0x0FFF0, 0x0FFFF, "Specials" },
    ["sundanese"]                            = { 0x01B80, 0x01BBF, "Sundanese" },
    ["superscriptsandsubscripts"]            = { 0x02070, 0x0209F, "Superscripts and Subscripts" },
    ["supplementalarrowsa"]                  = { 0x027F0, 0x027FF, "Supplemental Arrows-A" },
    ["supplementalarrowsb"]                  = { 0x02900, 0x0297F, "Supplemental Arrows-B" },
    ["supplementalmathematicaloperators"]    = { 0x02A00, 0x02AFF, "Supplemental Mathematical Operators" },
    ["supplementalpunctuation"]              = { 0x02E00, 0x02E7F, "Supplemental Punctuation" },
    ["supplementaryprivateuseareaa"]         = { 0xF0000, 0xFFFFF, "Supplementary Private Use Area-A" },
    ["supplementaryprivateuseareab"]         = { 0x100000,0x10FFFF,"Supplementary Private Use Area-B" },
    ["sylotinagri"]                          = { 0x0A800, 0x0A82F, "Syloti Nagri" },
    ["syriac"]                               = { 0x00700, 0x0074F, "Syriac" },
    ["tagalog"]                              = { 0x01700, 0x0171F, "Tagalog" },
    ["tagbanwa"]                             = { 0x01760, 0x0177F, "Tagbanwa" },
    ["tags"]                                 = { 0xE0000, 0xE007F, "Tags" },
    ["taile"]                                = { 0x01950, 0x0197F, "Tai Le" },
    ["taixuanjingsymbols"]                   = { 0x1D300, 0x1D35F, "Tai Xuan Jing Symbols" },
    ["tamil"]                                = { 0x00B80, 0x00BFF, "Tamil" },
    ["telugu"]                               = { 0x00C00, 0x00C7F, "Telugu" },
    ["thaana"]                               = { 0x00780, 0x007BF, "Thaana" },
    ["thai"]                                 = { 0x00E00, 0x00E7F, "Thai" },
    ["tibetan"]                              = { 0x00F00, 0x00FFF, "Tibetan" },
    ["tifinagh"]                             = { 0x02D30, 0x02D7F, "Tifinagh" },
    ["ugaritic"]                             = { 0x10380, 0x1039F, "Ugaritic" },
    ["unifiedcanadianaboriginalsyllabics"]   = { 0x01400, 0x0167F, "Unified Canadian Aboriginal Syllabics" },
    ["vai"]                                  = { 0x0A500, 0x0A63F, "Vai" },
    ["variationselectors"]                   = { 0x0FE00, 0x0FE0F, "Variation Selectors" },
    ["variationselectorssupplement"]         = { 0xE0100, 0xE01EF, "Variation Selectors Supplement" },
    ["verticalforms"]                        = { 0x0FE10, 0x0FE1F, "Vertical Forms" },
    ["yijinghexagramsymbols"]                = { 0x04DC0, 0x04DFF, "Yijing Hexagram Symbols" },
    ["yiradicals"]                           = { 0x0A490, 0x0A4CF, "Yi Radicals" },
    ["yisyllables"]                          = { 0x0A000, 0x0A48F, "Yi Syllables" },
}

function characters.getrange(name)
    local tag = lower(name)
    tag = gsub(name,"[^a-z]", "")
    local range = characters.blocks[tag]
    if range then
        return range[1], range[2], range[3]
    end
    name = gsub(name,'"',"0x") -- goodie: tex hex notation
    local start, stop = match(name,"^(.-)[%-%:](.-)$")
    if start and stop then
        start, stop = tonumber(start,16) or tonumber(start), tonumber(stop,16) or tonumber(stop)
        if start and stop then
            return start, stop, nil
        end
    end
    local slot = tonumber(name,16) or tonumber(name)
    return slot, slot, nil
end

characters.categories = allocate {
    lu = "Letter Uppercase",
    ll = "Letter Lowercase",
    lt = "Letter Titlecase",
    lm = "Letter Modifier",
    lo = "Letter Other",
    mn = "Mark Nonspacing",
    mc = "Mark Spacing Combining",
    me = "Mark Enclosing",
    nd = "Number Decimal Digit",
    nl = "Number Letter",
    no = "Number Other",
    pc = "Punctuation Connector",
    pd = "Punctuation Dash",
    ps = "Punctuation Open",
    pe = "Punctuation Close",
    pi = "Punctuation Initial Quote",
    pf = "Punctuation Final Quote",
    po = "Punctuation Other",
    sm = "Symbol Math",
    sc = "Symbol Currency",
    sk = "Symbol Modifier",
    so = "Symbol Other",
    zs = "Separator Space",
    zl = "Separator Line",
    zp = "Separator Paragraph",
    cc = "Other Control",
    cf = "Other Format",
    cs = "Other Surrogate",
    co = "Other Private Use",
    cn = "Other Not Assigned",
}

--~ special   : cf (softhyphen) zs (emspace)
--~ characters: ll lm lo lt lu mn nl no pc pd pe pf pi po ps sc sk sm so

local is_character = allocate ( table.tohash {
    "lu","ll","lt","lm","lo",
    "nd","nl","no",
    "mn",
    "nl","no",
    "pc","pd","ps","pe","pi","pf","po",
    "sm","sc","sk","so"
} )

local is_letter = allocate ( table.tohash {
    "ll","lm","lo","lt","lu"
} )

local is_command = allocate ( table.tohash {
    "cf","zs"
} )

characters.is_character = is_character
characters.is_letter    = is_letter
characters.is_command   = is_command

-- linebreak: todo: hash
--
-- normative   : BK CR LF CM SG GL CB SP ZW NL WJ JL JV JT H2 H3
-- informative : XX OP CL QU NS EX SY IS PR PO NU AL ID IN HY BB BA SA AI B2

-- east asian width:
--
-- N A H W F Na

characters.bidi = allocate {
    l   = "Left-to-Right",
    lre = "Left-to-Right Embedding",
    lro = "Left-to-Right Override",
    r   = "Right-to-Left",
    al  = "Right-to-Left Arabic",
    rle = "Right-to-Left Embedding",
    rlo = "Right-to-Left Override",
    pdf = "Pop Directional Format",
    en  = "European Number",
    es  = "European Number Separator",
    et  = "European Number Terminator",
    an  = "Arabic Number",
    cs  = "Common Number Separator",
    nsm = "Non-Spacing Mark",
    bn  = "Boundary Neutral",
    b   = "Paragraph Separator",
    s   = "Segment Separator",
    ws  = "Whitespace",
    on  = "Other Neutrals",
}

table.setemptymetatable(data) -- so each key resolves to ""

--[[ldx--
<p>At this point we assume that the big data table is loaded. From this
table we derive a few more.</p>
--ldx]]--

if not characters.fallbacks then

    characters.fallbacks   = { }
    characters.directions  = { }

    local fallbacks  = characters.fallbacks
    local directions = characters.directions

    for k,v in next, data do
        local specials = v.specials
        if specials and specials[1] == "compat" and specials[2] == 0x0020 and specials[3] then
            local s = specials[3]
            fallbacks[k] = s
            fallbacks[s] = k
        end
        directions[k] = v.direction
    end

end

storage.register("characters/fallbacks",  characters.fallbacks,  "characters.fallbacks")
storage.register("characters/directions", characters.directions, "characters.directions")

--[[ldx--
<p>The <type>context</type> namespace is used to store methods and data
which is rather specific to <l n='context'/>.</p>
--ldx]]--

--[[ldx--
<p>Instead of using a <l n='tex'/> file to define the named glyphs, we
use the table. After all, we have this information available anyway.</p>
--ldx]]--

function characters.makeactive(n,name) -- let ?
    texsprint(ctxcatcodes,format("\\catcode%s=13\\unexpanded\\def %s{\\%s}",n,utfchar(n),name))
end

function tex.uprint(n)
    texsprint(ctxcatcodes,utfchar(n))
end

if texsetcatcode then

    -- todo -- define per table and then also register name (for tracing)

    function characters.define(tobelettered, tobeactivated) -- catcodetables

        if trace_defining then
            report_defining("defining active character commands")
        end

        local activated = { }

        for u, chr in next, data do -- these will be commands
            local fallback = chr.fallback
            if fallback then
                texsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\checkedchar{",u,"}{",fallback,"}}}") -- no texprint
                activated[#activated+1] = u
            else
                local contextname = chr.contextname
                if contextname then
                    local category = chr.category
                    if is_character[category] then
                        if chr.unicodeslot < 128 then
                            texprint(ctxcatcodes,format("\\chardef\\%s=%s",contextname,u))
                        else
                            texprint(ctxcatcodes,format("\\let\\%s=%s",contextname,utfchar(u)))
                        end
                    elseif is_command[category] then
                        texsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\"..contextname,"}}") -- no texprint
                        activated[#activated+1] = u
                    end
                end
            end
        end

        if tobelettered then -- shared
         -- local saved = tex.catcodetable
         -- for i=1,#tobelettered do
         --     tex.catcodetable = tobelettered[i]
                if trace_defining then
                    report_defining("defining letters (global, shared)")
                end
                for u, chr in next, data do
                    if not chr.fallback and is_letter[chr.category] and u >= 128 and u <= 65536 then
                        texsetcatcode(u,11)
                    end
                    if chr.range then
                        for i=1,u,chr.range do
                            texsetcatcode(i,11)
                        end
                    end
                end
                texsetcatcode(0x200C,11) -- non-joiner
                texsetcatcode(0x200D,11) -- joiner
         -- end
         -- tex.catcodetable = saved
        end

        local nofactivated = #tobeactivated
        if tobeactivated and nofactivated > 0 then
            for i=1,nofactivated do
                local u = activated[i]
                report_defining("character 0x%05X is active in sets %s (%s)",u,concat(tobeactivated,","),data[u].description)
            end
            local saved = tex.catcodetable
            for i=1,#tobeactivated do
                local vector = tobeactivated[i]
                if trace_defining then
                    report_defining("defining %s active characters in vector %s",nofactivated,vector)
                end
                tex.catcodetable = vector
                for i=1,nofactivated do
                    texsetcatcode(activated[i],13)
                end
            end
            tex.catcodetable = saved
        end

    end

else -- keep this

    local template_a = "\\startextendcatcodetable{%s}\\chardef\\l=11\\chardef\\a=13\\let\\c\\catcode%s\\let\\a\\undefined\\let\\l\\undefined\\let\\c\\undefined\\stopextendcatcodetable"
    local template_b = "\\chardef\\l=11\\chardef\\a=13\\let\\c\\catcode%s\\let\\a\\undefined\\let\\l\\undefined\\let\\c\\undefined"

    function characters.define(tobelettered, tobeactivated) -- catcodetables
        local lettered, activated = { }, { }
        for u, chr in next, data do
            -- we can use a macro instead of direct settings
            local fallback = chr.fallback
            if fallback then
            --  texprint(format("{\\catcode %s=13\\unexpanded\\gdef %s{\\checkedchar{%s}{%s}}}",u,utfchar(u),u,fallback))
                texsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\checkedchar{",u,"}{",fallback,"}}}") -- no texprint
                activated[#activated+1] = "\\c"..u.."\\a"
            else
                local contextname = chr.contextname
                local category = chr.category
                if contextname then
                    if is_character[category] then
                     -- by this time, we're still in normal catcode mode
                     -- subtle: not "\\",contextname but "\\"..contextname
                        if chr.unicodeslot < 128 then
                        --  texprint(ctxcatcodes, "\\chardef\\"..contextname,"=",u)
                            texprint(ctxcatcodes,format("\\chardef\\%s=%s",contextname,u))
                        else
                        --  texprint(ctxcatcodes, "\\let\\"..contextname,"=",utfchar(u))
                            texprint(ctxcatcodes,format("\\let\\%s=%s",contextname,utfchar(u)))
                            if is_letter[category] then
                                lettered[#lettered+1] = "\\c"..u.."\\l"
                            end
                        end
                    elseif is_command[category] then
                        -- this might change: contextcommand ipv contextname
                    --  texprint(format("{\\catcode %s=13\\unexpanded\\gdef %s{\\%s}}",u,utfchar(u),contextname))
                        texsprint("{\\catcode",u,"=13\\unexpanded\\gdef ",utfchar(u),"{\\"..contextname,"}}") -- no texprint
                        activated[#activated+1] = "\\c"..u.."\\a"
                    end
                elseif is_letter[category] then
                    if u >= 128 and u <= 65536 then -- catch private mess
                        lettered[#lettered+1] = "\\c"..u.."\\l"
                    end
                end
            end
            if chr.range then
                lettered[#lettered+1] = format('\\dofastrecurse{"%05X}{"%05X}{1}{\\c\\fastrecursecounter\\l}',u,chr.range)
            end
        end
     -- if false then
        lettered[#lettered+1] = "\\c"..0x200C.."\\l" -- non-joiner
        lettered[#lettered+1] = "\\c"..0x200D.."\\l" -- joiner
     -- fi
        if tobelettered then
            lettered = concat(lettered)
            if true then
                texsprint(ctxcatcodes,format(template_b,lettered)) -- global
            else
                for l=1,#tobelettered do
                    texsprint(ctxcatcodes,format(template_a,tobelettered[l],lettered))
                end
            end
        end
        if tobeactivated then
            activated = concat(activated)
            for a=1,#tobeactivated do
                texsprint(ctxcatcodes,format(template_a,tobeactivated[a],activated))
            end
        end
    end

end

function characters.charcode(box)
    local b = tex.box[box]
    local l = b.list
    texsprint((l and l.id == node.id('glyph') and l.char) or 0)
end

--[[ldx--
<p>Setting the lccodes is also done in a loop over the data table.</p>
--ldx]]--

--~ function tex.setsfcode (index,sf) ... end
--~ function tex.setlccode (index,lc,[uc]) ... end -- optional third value, safes call
--~ function tex.setuccode (index,uc,[lc]) ... end
--~ function tex.setcatcode(index,cc) ... end

-- we need a function ...

--~ tex.lccode
--~ tex.uccode
--~ tex.sfcode
--~ tex.catcode

if texsetcatcode then

    function characters.setcodes()
        if trace_defining then
            report_defining("defining lc and uc codes")
        end
        for code, chr in next, data do
            local cc = chr.category
            if cc == 'll' or cc == 'lu' or cc == 'lt' then
                local lc, uc = chr.lccode, chr.uccode
                if not lc then chr.lccode, lc = code, code end
                if not uc then chr.uccode, uc = code, code end
                texsetcatcode(code,11)   -- letter
                texsetlccode(code,lc,uc)
                if cc == "lu" then
                    texsetsfcode(code,999)
                end
            elseif cc == "lo" and chr.range then
                for i=code,chr.range do
                    texsetcatcode(code,11)       -- letter
                    texsetlccode(code,code,code) -- self self
                end
            end
        end
    end

else -- keep this one

    function characters.setcodes()
        for code, chr in next, data do
            local cc = chr.category
            if cc == 'll' or cc == 'lu' or cc == 'lt' then
                local lc, uc = chr.lccode, chr.uccode
                if not lc then chr.lccode, lc = code, code end
                if not uc then chr.uccode, uc = code, code end
                texsprint(ctxcatcodes,format("\\setcclcuc{%i}{%i}{%i}",code,lc,uc))
            end
            if cc == "lu" then
                texprint(ctxcatcodes,"\\sfcode ",code,"999 ")
            end
            if cc == "lo" and chr.range then
                texsprint(ctxcatcodes,format('\\dofastrecurse{"%05X}{"%05X}{1}{\\setcclcucself\\fastrecursecounter}',code,chr.range))
            end
        end
    end

end

--[[ldx--
<p>Next comes a whole series of helper methods. These are (will be) part
of the official <l n='api'/>.</p>
--ldx]]--

--[[ldx--
<p>This converts a string (if given) into a number.</p>
--ldx]]--

function characters.number(n)
    if type(n) == "string" then return tonumber(n,16) else return n end
end

--[[ldx--
<p>Checking for valid characters.</p>
--ldx]]--

function characters.is_valid(s)
    return s or ""
end

function characters.checked(s, default)
    return s or default
end

characters.valid = characters.is_valid

--[[ldx--
<p></p>
--ldx]]--
-- set a table entry; index is number (can be different from unicodeslot)

function characters.set(n, c)
    data[characters.number(n)] = c
end

--[[ldx--
<p>Get a table entry happens by number. Keep in mind that the unicodeslot
can be different (not likely).</p>
--ldx]]--

function characters.get(n)
    return data[characters.number(n)]
end

--[[ldx--
<p>A couple of convenience methods. Beware, these are not that fast due
to the checking.</p>
--ldx]]--

function characters.hexindex(n)
    return format("%04X", characters.valid(data[characters.number(n)].unicodeslot))
end

function characters.contextname(n)
    return characters.valid(data[characters.number(n)].contextname)
end

function characters.adobename(n)
    return characters.valid(data[characters.number(n)].adobename)
end

function characters.description(n)
    return characters.valid(data[characters.number(n)].description)
end

function characters.category(n)
    return characters.valid(data[characters.number(n)].category)
end

--[[ldx--
<p>Requesting lower and uppercase codes:</p>
--ldx]]--

function characters.uccode(n) return data[n].uccode or n end
function characters.lccode(n) return data[n].lccode or n end

function characters.flush(n,direct)
    local c = data[n]
    if c and c.contextname then
        c = "\\" .. c.contextname
    else
        c = utfchar(n)
    end
    if direct then
        return c
    else
        texsprint(c)
    end
end

function characters.shape(n)
    local shcode = data[n].shcode
    if not shcode then
        return n, nil
    elseif type(shcode) == "table" then
        return shcode[1], shcode[#shcode]
    else
        return shcode, nil
    end
end

--[[ldx--
<p>Categories play an important role, so here are some checkers.</p>
--ldx]]--

function characters.is_of_category(token,category)
    if type(token) == "string" then
        return data[utfbyte(token)].category == category
    else
        return data[token].category == category
    end
end

function characters.i_is_of_category(i,category) -- by index (number)
    local cd = data[i]
    return cd and cd.category == category
end

function characters.n_is_of_category(n,category) -- by name (string)
    local cd = data[utfbyte(n)]
    return cd and cd.category == category
end

-- xml support (moved)

function characters.remapentity(chr,slot)
    texsprint(format("{\\catcode%s=13\\xdef%s{\\string%s}}",slot,utfchar(slot),chr))
end

characters.activeoffset = 0x10000 -- there will be remapped in that byte range

-- xml.entities = xml.entities or { }
--
-- storage.register("xml/entities",xml.entities,"xml.entities") -- this will move to lxml
--
-- function characters.setmkiventities()
--     local entities = xml.entities
--     entities.lt  = "<"
--     entities.amp = "&"
--     entities.gt  = ">"
-- end
--
-- function characters.setmkiientities()
--     local entities = xml.entities
--     entities.lt  = utfchar(characters.activeoffset + utfbyte("<"))
--     entities.amp = utfchar(characters.activeoffset + utfbyte("&"))
--     entities.gt  = utfchar(characters.activeoffset + utfbyte(">"))
-- end

-- some day we will make a table

local function utfstring(s)
    if type(s) == "table" then
        return concat { utfchar( unpack(s) ) }
    else
        return utfchar(s)
    end
end

utf.string = utf.string or utfstring

characters.lccodes = allocate()  local lccodes = characters.lccodes -- lazy table
characters.uccodes = allocate()  local uccodes = characters.uccodes -- lazy table
characters.shcodes = allocate()  local shcodes = characters.shcodes -- lazy table

setmetatable(lccodes, { __index = function(t,u) if u then local c = data[u] c = c and c.lccode or u t[u] = c return c end end } )
setmetatable(uccodes, { __index = function(t,u) if u then local c = data[u] c = c and c.uccode or u t[u] = c return c end end } )
setmetatable(shcodes, { __index = function(t,u) if u then local c = data[u] c = c and c.shcode or u t[u] = c return c end end } )

characters.lcchars = allocate()  local lcchars = characters.lcchars -- lazy table
characters.ucchars = allocate()  local ucchars = characters.ucchars -- lazy table
characters.shchars = allocate()  local shchars = characters.shchars -- lazy table

setmetatable(lcchars, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.lccode c = c and utfchar  (c) or u t[u] = c return c end end } )
setmetatable(ucchars, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.uccode c = c and utfchar  (c) or u t[u] = c return c end end } )
setmetatable(shchars, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.shcode c = c and utfstring(c) or u t[u] = c return c end end } )

--~ characters.lccharcodes = allocate()  local lccharcodes = characters.lccharcodes -- lazy table
--~ characters.uccharcodes = allocate()  local uccharcodes = characters.uccharcodes -- lazy table
--~ characters.shcharcodes = allocate()  local shcharcodes = characters.shcharcodes -- lazy table

--~ setmetatable(lccharcodes, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.lccode or u t[u] = c return c end end } )
--~ setmetatable(uccharcodes, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.uccode or u t[u] = c return c end end } )
--~ setmetatable(shcharcodes, { __index = function(t,u) if u then local c = data[utfbyte(u)] c = c and c.shcode or u t[u] = c return c end end } )

characters.specialchars = allocate()  local specialchars = characters.specialchars -- lazy table

setmetatable(specialchars, { __index = function(t,u)
    if u then
        local c = data[utfbyte(u)]
        local s = c and c.specials
        if s then
            local t = { }
            for i=2,#s do
                local si = s[i]
                local c = data[si]
                if is_letter[c.category] then
                    t[#t+1] = utfchar(si)
                end
            end
            c = concat(t)
            t[u] = c
            return c
        else
            t[u] = u
            return u
        end
    end
end } )


function characters.lower(str)
    local new = { }
    for u in utfvalues(str) do
        new[#new+1] = utfchar(lccodes[u])
    end
    return concat(new)
end

function characters.upper(str)
    local new = { }
    for u in utfvalues(str) do
        new[#new+1] = utfchar(uccodes[u])
    end
    return concat(new)
end

function characters.lettered(str)
    local new = { }
    for u in utfvalues(str) do
        local d = data[u]
        if is_letter[d.category] then
            new[#new+1] = utfchar(lccodes[u])
        end
    end
    return concat(new)
end


-- -- some day we might go this route, but it does not really save that much
-- -- so not now (we can generate a lot using mtx-unicode that operates on the
-- -- database)
--
-- -- category cjkwd direction linebreak
--
-- -- adobename comment contextcommand contextname description fallback lccode
-- -- mathclass mathfiller mathname mathspec mathstretch mathsymbol mirror
-- -- range shcode specials uccode uccodes unicodeslot
--
-- local data = {
--     ['one']={
--         common = {
--             category="cc",
--             direction="bn",
--             linebreak="cm",
--         },
--         vector = {
--             [0x0000] = {
--                 description="NULL",
--                 group='one',
--                 unicodeslot=0x0000,
--             },
--             {
--                 description="START OF HEADING",
--                 group='one',
--                 unicodeslot=0x0001,
--             },
--         }
--     }
-- }
--
-- local chardata, groupdata = { }, { }
--
-- for group, gdata in next, data do
--     local common, vector = { __index = gdata.common }, gdata.vector
--     for character, cdata in next, vector do
--         chardata[character] = cdata
--         setmetatable(cdata,common)
--     end
--     groupdata[group] = gdata
-- end

--~ characters.data, characters.groups = chardata, groupdata