summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/scripts/lyluatex/lyluatex.lua
blob: 1023e20ef9a35708af9883d47056c4ad7446f384 (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
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
-- luacheck: ignore ly log self luatexbase internalversion font fonts tex token kpse status ly_opts
local err, warn, info, log = luatexbase.provides_module({
    name               = "lyluatex",
    version            = '1.0f',  --LYLUATEX_VERSION
    date               = "2019/05/27",  --LYLUATEX_DATE
    description        = "Module lyluatex.",
    author             = "The Gregorio Project  − (see Contributors.md)",
    copyright          = "2015-2019 - jperon and others",
    license            = "MIT",
})

local lib = require(kpse.find_file("lyluatex-lib.lua") or "lyluatex-lib.lua")
local ly_opts = ly_opts  -- global ly_opts has been defined before in lyluatex.sty

local md5 = require 'md5'
local lfs = require 'lfs'

local latex = {}
local ly = {
    err = err,
    varwidth_available = kpse.find_file('varwidth.sty')
}
local Score = ly_opts.options
Score.__index = Score

local FILELIST
local DIM_OPTIONS = {
    'extra-bottom-margin',
    'extra-top-margin',
    'gutter',
    'hpadding',
    'indent',
    'leftgutter',
    'line-width',
    'max-protrusion',
    'max-left-protrusion',
    'max-right-protrusion',
    'rightgutter',
    'paperwidth',
    'paperheight',
    'voffset'
}
local HASHIGNORE = {
    'autoindent',
    'cleantmp',
    'do-not-print',
    'force-compilation',
    'hpadding',
    'max-left-protrusion',
    'max-right-protrusion',
    'print-only',
    'valign',
    'voffset'
}
local MXML_OPTIONS = {
    'absolute',
    'language',
    'lxml',
    'no-articulation-directions',
    'no-beaming',
    'no-page-layout',
    'no-rest-positions',
    'verbose',
}
local TEXINFO_OPTIONS = {'doctitle', 'nogettext', 'texidoc'}
local LY_HEAD = [[
%%File header
\version "<<<version>>>"
<<<language>>>

<<<preamble>>>

#(define inside-lyluatex #t)
#(set-global-staff-size <<<staffsize>>>)

\header {
    copyright = ""
    tagline = ##f
}
\paper{
    <<<paper>>>
    two-sided = ##<<<twoside>>>
    line-width = <<<linewidth>>>\pt
    <<<indent>>>
    <<<raggedright>>>
    <<<fonts>>>
}
\layout{
    <<<staffprops>>>
    <<<fixbadlycroppedstaffgroupbrackets>>>
}
<<<header>>>

%%Follows original score
]]


--[[ ========================== Helper functions ========================== --]]
-- dirty fix as info doesn't work as expected
local oldinfo = info
function info(...)
    print('\n(lyluatex)', string.format(...))
    oldinfo(...)
end
-- debug acts as info if [debug] is specified
local function debug(...)
    if Score.debug then info(...) end
end


local function extract_includepaths(includepaths)
    includepaths = includepaths:explode(',')
    local cfd = Score.currfiledir:gsub('^$', './')
    table.insert(includepaths, 1, cfd)
    for i, path in ipairs(includepaths) do
        -- delete initial space (in case someone puts a space after the comma)
        includepaths[i] = path:gsub('^ ', ''):gsub('^~', os.getenv("HOME")):gsub('^%.%.', './..')
    end
    return includepaths
end


local function font_default_staffsize()
    return lib.fontinfo(font.current()).size/39321.6
end


local function includes_parse(list)
    local includes = ''
    if list then
        list = list:explode(',')
        for _, included_file in ipairs(list) do
            warn(included_file)
            includes = includes .. '\\include "'..included_file..'.ly"\n'
        end
    end
    return includes
end


local function locate(file, includepaths, ext)
    local result
    for _, d in ipairs(extract_includepaths(includepaths)) do
        if d:sub(-1) ~= '/' then d = d..'/' end
        result = d..file
        if lfs.isfile(result) then break end
    end
    if not lfs.isfile(result) and ext and file:match('%.[^%.]+$') ~= ext then return locate(file..ext, includepaths) end
    if not lfs.isfile(result) then result = kpse.find_file(file) end
    return result
end


local function range_parse(range, nsystems)
    local num = tonumber(range)
    if num then return {num} end
    -- if nsystems is set, we have insert=systems
    if nsystems ~= 0 and range:sub(-1) == '-' then range = range..nsystems end
    if not (range == '' or range:match('^%d+%s*-%s*%d*$')) then
        warn([[
Invalid value '%s' for item
in list of page ranges. Possible entries:
- Single number
- Range (M-N, N-M or N-)
This item will be skipped!
]],
            range
        )
        return
    end
    local result = {}
    local from, to = tonumber(range:match('^%d+')), tonumber(range:match('%d+$'))
    if to then
        local dir
        if from <= to then dir = 1 else dir = -1 end
        for i = from, to, dir do table.insert(result, i) end
        return result
    else return {range}  -- N- with insert=fullpage
    end
end


local function set_lyscore(score)
    ly.score = score
    ly.score.nsystems = ly.score:count_systems()
    if score.insert ~= 'fullpage' then  -- systems and inline
        local hoffset = ly.score.protrusion or 0
        if hoffset == '' then hoffset = 0 end
        ly.score.hoffset = hoffset..'pt'
        for s = 1, ly.score.nsystems do
            table.insert(ly.score, ly.score.output..'-'..s)
        end
    else ly.score[1] = ly.score.output
    end
end


--[[ ================ Bounding box calculations =========================== --]]

local bbox = {}
function bbox.get(filename, line_width)
    return bbox.read(filename) or bbox.parse(filename, line_width)
end

function bbox.calc(x_1, x_2, y_1, y_2, line_width)
    local bb = {
        ['protrusion'] = -lib.convert_unit(("%fbp"):format(x_1)),
        ['r_protrusion'] = lib.convert_unit(("%fbp"):format(x_2)) - line_width,
        ['width'] = lib.convert_unit(("%fbp"):format(x_2))
    }
    --FIX #192: height is only calculated if really needed, to prevent errors with huge scores.
    function bb.__index(_, k)
        if k == 'height' then return lib.convert_unit(("%fbp"):format(y_2)) - lib.convert_unit(("%fbp"):format(y_1)) end
    end
    setmetatable(bb, bb)
    return bb
end

function bbox.parse(filename, line_width)
    -- get BoundingBox from EPS file
    local bbline = lib.readlinematching('^%%%%BoundingBox', io.open(filename..'.eps', 'r'))
    if not bbline then return end
    local x_1, y_1, x_2, y_2 = bbline:match('(%--%d+)%s(%--%d+)%s(%--%d+)%s(%--%d+)')
    -- try to get HiResBoundingBox from PDF (if 'gs' works)
    bbline = lib.readlinematching(
        '^%%%%HiResBoundingBox',
        io.popen('gs -sDEVICE=bbox -q -dBATCH -dNOPAUSE '..filename..'.pdf 2>&1', 'r')
    )
    if bbline then
        local pbb = bbline:gmatch('(%d+%.%d+)')
        -- The HiRes BoundingBox retrieved from the PDF differs from the
        -- BoundingBox present in the EPS file. In the PDF (0|0) is the
        -- Lower Left corner while in the EPS (0|0) represents the top
        -- edge at the start of the staff symbol.
        -- Therefore we shift the HiRes results by the (truncated)
        -- points of the EPS bounding box.
        x_1, y_1, x_2, y_2 = pbb() + x_1, pbb() + y_1, pbb() + x_1, pbb() + y_1
    else warn([[gs couldn't be launched; there could be rounding errors.]])
    end
    local f = io.open(filename .. '.bbox', 'w')
    f:write(
        string.format("return %s, %s, %s, %s, %s", x_1, y_1, x_2, y_2, line_width)
    )
    f:close()
    return bbox.calc(x_1, x_2, y_1, y_2, line_width)
end

function bbox.read(f)
    f = f .. '.bbox'
    if lfs.isfile(f) then
        local x_1, y_1, x_2, y_2, line_width = dofile(f)
        return bbox.calc(x_1, x_2, y_1, y_2, line_width)
    end
end


--[[ =============== Functions that output LaTeX code ===================== --]]

function latex.filename(printfilename, insert, input_file)
    if printfilename and input_file then
        if insert ~= 'systems' then
            warn('`printfilename` only works with `insert=systems`')
        else
            local filename = input_file:gsub("(.*/)(.*)", "\\lyFilename{%2}\\par")
            tex.sprint(filename)
        end
    end
end

function latex.fullpagestyle(style, ppn)
    local function texoutput(s) tex.sprint('\\includepdfset{pagecommand='..s..'}%') end
    if style == '' then
        if ppn then texoutput('\\thispagestyle{empty}')
        else texoutput('')
        end
    else texoutput('\\thispagestyle{'..style..'}')
    end
end

function latex.includeinline(pdfname, height, valign, hpadding, voffset)
    local v_base
    if valign == 'bottom' then v_base = 0
    elseif valign == 'top' then v_base = lib.convert_unit('1em') - height
    else v_base = (lib.convert_unit('1em') - height) / 2
    end
    tex.sprint(
        string.format(
            [[\hspace{%fpt}\raisebox{%fpt}{\includegraphics{%s-1.pdf}}\hspace{%fpt}]],
            hpadding, v_base + voffset, pdfname, hpadding
        )
    )
end

function latex.includepdf(pdfname, range, papersize)
    local noautoscale = ''
    if papersize then noautoscale = 'noautoscale' end
    tex.sprint(string.format(
        [[\includepdf[pages={%s},%s]{%s}]],
        table.concat(range, ','), noautoscale, pdfname
    ))
end

function latex.includesystems(filename, range, protrusion, gutter, staffsize, indent_offset)
    local h_offset = protrusion + indent_offset
    local texoutput = '\\ifx\\preLilyPondExample\\undefined\\else\\preLilyPondExample\\fi\n'
    texoutput = texoutput..'\\par\n'
    for index, system in pairs(range) do
        if not lfs.isfile(filename..'-'..system..'.pdf') then break end
        texoutput = texoutput..
            string.format([[
\noindent\hspace*{%fpt}\includegraphics{%s}%%
]],
                h_offset + gutter, filename..'-'..system
            )
        if index < #range then
            texoutput = texoutput..
                string.format([[
\ifx\betweenLilyPondSystem\undefined\par\vspace{%fpt plus %fpt minus %fpt}%%
\else\betweenLilyPondSystem{%s}\fi%%
]],
                    staffsize / 4, staffsize / 12, staffsize / 16,
                    index
                )
        end
    end
    texoutput = texoutput..'\n\\ifx\\postLilyPondExample\\undefined\\else\\postLilyPondExample\\fi'
    tex.sprint(texoutput:explode('\n'))
end

function latex.label(label, labelprefix)
    if label then tex.sprint('\\label{'..labelprefix..label..'}%%') end
end


ly.verbenv = {[[\begin{verbatim}]], [[\end{verbatim}]]}
function latex.verbatim(verbatim, ly_code, intertext, version)
    if verbatim then
        if version then tex.sprint('\\lyVersion{'..version..'}') end
        local content = table.concat(ly_code:explode('\n'), '\n'):gsub(
            '.*%%%s*begin verbatim', ''):gsub(
            '%%%s*end verbatim.*', '')
        --[[ We unfortunately need an external file,
             as verbatim environments are quite special. --]]
        local fname = ly_opts.tmpdir..'/verb.tex'
        local f = io.open(fname, 'w')
        f:write(
            ly.verbenv[1]..'\n'..
            content..
            '\n'..ly.verbenv[2]:gsub([[\end {]], [[\end{]])..'\n'
        )
        f:close()
        tex.sprint('\\input{'..fname..'}')
        if intertext then tex.sprint('\\lyIntertext{'..intertext..'}') end
    end
end


--[[ =============================== Classes =============================== --]]

-- Score class
function Score:new(ly_code, options, input_file)
    local o = options or {}
    setmetatable(o, self)
    o.output_names = {}
    o.input_file = input_file
    o.ly_code = ly_code
    return o
end

function Score:bbox(system)
    if system then
        if not self.bboxes then
            self.bboxes = {}
            for i = 1, self:count_systems() do
                table.insert(self.bboxes, bbox.get(self.output..'-'..i, self['line-width']))
            end
        end
        return self.bboxes[system]
    else
        if not self.bbox then self.bbox = bbox.get(self.output, self['line-width']) end
        return self.bbox
    end
end

function Score:calc_properties()
    self:calc_staff_properties()
    -- add includes to lilypond code
    self.ly_code = includes_parse(self.include_before_body)
        .. self.ly_code
        .. includes_parse(self.include_after_body)
    -- fragment and relative
    if self.relative and not self.fragment then
        -- local option takes precedence over global option
        if Score.fragment then self.relative = false end
    end
    if self.relative then
        self.fragment = 'true'  -- yes, here we need a string, not a bool
        if self.relative == '' then self.relative = 1
        else self.relative = tonumber(self.relative)
        end
    end
    if self.fragment == '' then
        -- by default, included files shouldn't be fragments
        if ly.state == 'file' then self.fragment = false end
    end
    -- default insertion mode
    if self.insert == '' then
        if ly.state == 'cmd' then self.insert = 'inline'
        else self.insert = 'systems'
        end
    end
    -- staffsize
    self.staffsize = tonumber(self.staffsize)
    if self.staffsize == 0 then self.staffsize = font_default_staffsize() end
    if self.insert == 'inline' or self.insert == 'bare-inline' then
        local inline_staffsize = tonumber(self['inline-staffsize'])
        if inline_staffsize == 0 then inline_staffsize = self.staffsize / 1.5 end
        self.staffsize = inline_staffsize
    end
    -- dimensions that can be given by LaTeX
    for _, dimension in pairs(DIM_OPTIONS) do
        self[dimension] = lib.convert_unit(self[dimension])
    end
    self['max-left-protrusion'] = self['max-left-protrusion'] or self['max-protrusion']
    self['max-right-protrusion'] = self['max-right-protrusion'] or self['max-protrusion']
    if self.quote then
        self.leftgutter = self.leftgutter or self.gutter
        self.rightgutter = self.rightgutter or self.gutter
        self['line-width'] = self['line-width'] - self.leftgutter - self.rightgutter
    else
        self.leftgutter = 0
        self.rightgutter = 0
    end
    -- store for comparing protrusion against
    self.original_lw = self['line-width']
    self.original_indent = self.indent
    -- explicit indent disables autoindent
    if self.indent then self.autoindent = false end
    -- score fonts
    if self['current-font-as-main'] then self.rmfamily = self['current-font'] end
    -- LilyPond version
    if self.addversion then self.addversion = self:lilypond_version(true) end
    -- temporary file name
    self.output = self:output_filename()
end

function Score:calc_range()
    local nsystems = self:count_systems(true)
    local printonly, donotprint = self['print-only'], self['do-not-print']
    if printonly == '' then printonly = '1-' end
    local result = tonumber(printonly) and {tonumber(printonly)} or {}
    if not result[1] then
        for _, r in pairs(printonly:explode(',')) do
            local range = range_parse(r:gsub('^%s', ''):gsub('%s$', ''), nsystems)
            if range then
                for _, v in pairs(range) do table.insert(result, v) end
            end
        end
    end
    local rm_result = tonumber(donotprint) and {tonumber(donotprint)} or {}
    if not rm_result[1] then
        for _, r in pairs(donotprint:explode(',')) do
            local range = range_parse(r:gsub('^%s', ''):gsub('%s$', ''), nsystems)
            if range then
                for _, v in pairs(range) do table.insert(rm_result, v) end
            end
        end
    end
    for _, v in pairs(rm_result) do
        local k = lib.contains(result, v)
        if k then table.remove(result, k) end
    end
    return result
end

function Score:calc_staff_properties()
    -- preset for bare notation symbols in inline images
    if self.insert == 'bare-inline' then self.nostaff = 'true' end
    -- handle meta properties
    if self.notime then
        self.notimesig = 'true'
        self.notiming = 'true'
    end
    if self.nostaff then
        self.nostaffsymbol = 'true'
        self.notimesig = 'true'
        -- do *not* suppress timing
        self.noclef = 'true'
    end
end

function Score:check_compilation()
    local debug_msg, doc_debug_msg
    if self.debug then
        debug_msg = string.format([[
Please check the log file
and the generated LilyPond code in
%s
%s
]],
            self.output..'.log', self.output..'.ly'
        )
        doc_debug_msg = [[
A log file and a LilyPond file have been written.\\
See log for details.]]
    else
        debug_msg = [[
If you need more information
than the above message,
please retry with option debug=true.
]]
        doc_debug_msg = "Re-run with \\texttt{debug} option to investigate."
    end
    if self.fragment then
        local frag_msg = '\n'..[[
As the input code has been automatically wrapped
with a music expression, you may try repeating
with the `nofragment` option.]]
        debug_msg = debug_msg..frag_msg
        doc_debug_msg = doc_debug_msg..frag_msg
    end

    if self:is_compiled() then
        if self.lilypond_error then
            warn([[

LilyPond reported a failed compilation but
produced a score. %s
]],
                debug_msg
            )
        end
        -- we do have *a* score (although labeled as failed by LilyPond)
        return true
    else
        self:clean_failed_compilation()
        if self.showfailed then
            tex.sprint(string.format([[
\begin{quote}
\minibox[frame]{LilyPond failed to compile a score.\\
%s}
\end{quote}

]],
                doc_debug_msg
            ))
            warn([[

LilyPond failed to compile the score.
%s
]],
                debug_msg
            )
        else
            err([[

LilyPond failed to compile the score.
%s
]],
                debug_msg
            )
        end
        -- We don't have any compiled score
        return false
    end
end

function Score:check_indent(lp)
    local nsystems = self:count_systems()

    local function handle_autoindent()
        self.indent_offset = 0
        if lp.shorten > 0 then
            if not self.indent or self.indent == 0 then
                self.indent = lp.overflow_left
                lp.shorten = lib.max(lp.shorten - lp.overflow_left, 0)
            else
                self.indent = lib.max(self.indent - lp.overflow_left, 0)
            end
            lp.changed_indent = true
        end
    end

    local function handle_indent()
        if not self.indent_offset then
            -- First step: deactivate indent
            self.indent_offset = 0
            if self:count_systems() > 1 then
                -- only recompile if the *original* score has more than 1 system
                self.indent = 0
                lp.changed_indent = true
            end
            info('Deactivate indentation because of system selection')
        elseif lp.shorten > 0 then
                self.indent = 0
                self.autoindent = true
                -- lp.changed_indent = true
                handle_autoindent()
                info('Deactivated indent causes protrusion.')
        end
    end

    local function regular_score()
        -- score without any indent or with the first system
        -- printed regularly, with others following.
        return not self.original_indent or
            nsystems > 1 and  #self.range > 1 and self.range[1] == 1
    end

    local function simple_noindent()
        -- score with indent and only one system
        return self.original_indent and nsystems == 1
    end

    if simple_noindent() then
        self.indent_offset = -self.indent
        warn('Deactivate indent for single-system score.')
    elseif self.autoindent then handle_autoindent()
    elseif regular_score() then self.indent_offset = 0
    else handle_indent()
    end
end

function Score:check_properties()
    ly_opts:validate_options(self)
    for _, k in pairs(TEXINFO_OPTIONS) do
        if self[k] then info([[Option %s is specific to Texinfo: ignoring it.]], k) end
    end
    if self.fragment then
        if (self.input_file or
            self.ly_code:find([[\book]]) or
            self.ly_code:find([[\header]]) or
            self.ly_code:find([[\layout]]) or
            self.ly_code:find([[\paper]]) or
            self.ly_code:find([[\score]])
        ) then
            warn([[
Found something incompatible with `fragment`
(or `relative`). Setting them to false.
]]
            )
            self.fragment = false
            self.relative = false
        end
    end
end

function Score:check_protrusion(bbox_func)
    self.range = self:calc_range()
    if self.insert ~= 'systems' then return self:is_compiled() end
    local bb = bbox_func(self.output, self['line-width'])
    if not bb then return end
    -- line_props lp
    local lp = {}
    -- Determine offset due to left protrusion
    lp.overflow_left = lib.max(bb.protrusion - math.floor(self['max-left-protrusion']), 0)
    self.protrusion_left = lp.overflow_left - bb.protrusion
    -- Determine further line properties
    lp.stave_extent = lp.overflow_left + lib.min(self['line-width'], bb.width)
    lp.available = self.original_lw + self['max-right-protrusion']
    lp.total_extent = lp.stave_extent + bb.r_protrusion
    -- Check if stafflines protrude into the right margin after offsetting
    -- Note: we can't *reliably* determine this with ragged one-system scores,
    -- possibly resulting in unnecessarily short lines when right protrusion is
    -- present
    lp.stave_overflow_right = lib.max(lp.stave_extent - self.original_lw, 0)
    -- Check if image as a whole protrudes over max-right-protrusion
    lp.overflow_right = lib.max(lp.total_extent - lp.available, 0)
    lp.shorten = lib.max(lp.stave_overflow_right, lp.overflow_right)
    lp.changed_indent = false
    self:check_indent(lp, bb)
    if lp.shorten > 0 or lp.changed_indent then
        self['line-width'] = self['line-width'] - lp.shorten
        -- recalculate hash to reflect the reduced line-width
        if lp.shorten > 0 then
            info('Compiled score exceeds protrusion limit(s)')
        end
        if lp.changed_indent then info([[Adjusted indent.]]) end
        self.output = self:output_filename()
        warn('Recompile or reuse cached score')
        return
    else return true
    end
end

function Score:clean_failed_compilation()
    for file in lfs.dir(self.tmpdir) do
        local filename = self.tmpdir..'/'..file
        if filename:find(self.output) then os.remove(filename) end
    end
end

function Score:content()
    local n = ''
    local ly_code = self.ly_code
    if self.relative then
        self.fragment = 'true'  -- in case it would serve later
        if self.relative < 0 then
            for _ = -1, self.relative, -1 do n = n..',' end
        elseif self.relative > 0 then
            for _ = 1, self.relative do n = n.."'" end
        end
        return string.format([[\relative c%s {%s}]], n, ly_code)
    elseif self.fragment then return [[{]]..ly_code..[[}]]
    else return ly_code
    end
end

function Score:count_systems(force)
    if force or not self.system_count then
        local f = io.open(self.output..'-systems.count', 'r')
        if f then
            self.system_count = tonumber(f:read('*all'))
            f:close()
        else self.system_count = 0
        end
    end
    return self.system_count
end

function Score:delete_intermediate_files()
    for _, filename in pairs(self.output_names) do
        if self.insert == 'fullpage' then os.remove(filename..'.ps')
        else
            for i = 1, self:count_systems() do os.remove(filename..'-'..i..'.eps') end
            os.remove(filename..'-systems.tex')
            os.remove(filename..'-systems.texi')
            os.remove(filename..'.eps')
            os.remove(filename..'.pdf')
        end
    end
end

function Score:flatten_content(ly_code)
    --[[ Produce a flattend string from the original content,
        including referenced files (if they can be opened.
        Other files (from LilyPond's include path) are considered
        irrelevant for the purpose of a hashsum.) --]]

    -- Replace percent signs with another character that doesn't
    -- meddle with Lua's gsub escape character.
    ly_code = ly_code:gsub('%%', '#')
    local f
    local includepaths = self.includepaths..','..self.tmpdir
    if self.input_file then includepaths = self.includepaths..','..lib.dirname(self.input_file) end
    for iline in ly_code:gmatch('\\include%s*"[^"]*"') do
        f = io.open(locate(iline:match('\\include%s*"([^"]*)"'), includepaths, '.ly') or '')
        if f then
            ly_code = ly_code:gsub(iline, self:flatten_content(f:read('*a')))
            f:close()
        end
    end
    return ly_code
end

function Score:footer()
    return includes_parse(self.include_footer)
end

function Score:header()
    local header = LY_HEAD
    for element in LY_HEAD:gmatch('<<<(%w+)>>>') do
        header = header:gsub('<<<'..element..'>>>', self['ly_'..element](self) or '')
    end
    local wh_dest = self['write-headers']
    if wh_dest then
        if self.input_file then
            local _, ext = lib.splitext(wh_dest)
            local header_file = ext and wh_dest
                or wh_dest..'/'..lib.splitext(lib.basename(self.input_file), 'ly').."-lyluatex-headers.ily"
            lib.mkdirs(lib.dirname(header_file))
            local f = io.open(header_file, 'w')
            f:write(header
                :gsub([[%\include "lilypond%-book%-preamble.ly"]], '')
                :gsub([[%#%(define inside%-lyluatex %#t%)]], '')
                :gsub('\n+', '\n')
            )
            f:close()
        else
            warn([[Ignoring 'write-headers' for non-file score.]])
        end
    end
    return header
end

function Score:is_compiled()
    if self['force-compilation'] then return false end
    return lfs.isfile(self.output..'.pdf') or self:count_systems(true) ~= 0
end

function Score:is_odd_page() return tex.count['c@page'] % 2 == 1 end

function Score:lilypond_cmd()
    local input, mode = '-s -', 'w'
    if self.debug then
        local f = io.open(self.output..'.ly', 'w')
        f:write(self.complete_ly_code)
        f:close()
        input = self.output..".ly 2>&1"
        mode = 'r'
    end
    local cmd = '"'..self.program..'" '..
        "-dno-point-and-click "..
        "-djob-count=2 "..
        "-dno-delete-intermediate-files "
    if self['optimize-pdf'] and self:lilypond_has_TeXGS() then cmd = cmd.."-O TeX-GS " end
    if self.input_file then
        cmd = cmd..'-I "'..lib.dirname(self.input_file):gsub('^%./', lfs.currentdir()..'/')..'" '
    end
    for _, dir in ipairs(extract_includepaths(self.includepaths)) do
        cmd = cmd..'-I "'..dir:gsub('^%./', lfs.currentdir()..'/')..'" '
    end
    cmd = cmd..'-o "'..self.output..'" '..input
    if lib.tex_engine.dist == 'MiKTeX' then cmd = '"'..cmd..'"' end
    debug("Command:\n"..cmd)
    return cmd, mode
end

function Score:lilypond_has_TeXGS()
    return lib.readlinematching('TeX%-GS', io.popen('"'..self.program..'" --help', 'r'))
end

function Score:lilypond_version(number)
    local result = lib.readlinematching('GNU LilyPond', io.popen('"'..self.program..'" --version', 'r'))
    if result then
        if number then return result:match('%d+%.%d+%.?%d*')
        else
            info(
                "Compiling score %s with LilyPond executable '%s'.",
                self.output, self.program
            )
            debug(result)
            return true
        end
    end
end

function Score:ly_fixbadlycroppedstaffgroupbrackets()
    return self.fix_badly_cropped_staffgroup_brackets and [[\context {
        \Score
        \override SystemStartBracket.after-line-breaking =
        #(lambda (grob)
            (let ((Y-off (ly:grob-property grob 'Y-extent)))
                (ly:grob-set-property! grob 'Y-extent
                  (cons (- (car Y-off) 1.7) (+ (cdr Y-off) 1.7)))))
    }]]
end

function Score:ly_fonts()
    if self['pass-fonts'] then
        return string.format([[
#(define fonts
    (make-pango-font-tree "%s"
                          "%s"
                          "%s"
                          (/ staff-height pt 20)))
]],
            self.rmfamily,
            self.sffamily,
            self.ttfamily
        )
    end
end

function Score:ly_header()
    return includes_parse(self.include_header)
end

function Score:ly_indent()
    if not (self.indent == false and self.insert == 'fullpage') then
        return [[indent = ]]..(self.indent or 0)..[[\pt]]
    end
end

function Score:ly_language()
    if self.language then return '\\language "'..self.language..'"' end
end

function Score:ly_linewidth() return self['line-width'] end

function Score:ly_staffsize() return self.staffsize end

function Score:ly_margins()
    local horizontal_margins =
        self.twoside and string.format([[
            inner-margin = %s\pt]], self:tex_margin_inner())
        or string.format([[
            left-margin = %s\pt]], self:tex_margin_left())

    local tex_top = self['extra-top-margin'] + self:tex_margin_top()
    local tex_bottom = self['extra-bottom-margin'] + self:tex_margin_bottom()
    if self.fullpagealign == 'crop' then
        return string.format([[
    top-margin = %s\pt
    bottom-margin = %s\pt
    %s]],
            tex_top, tex_bottom, horizontal_margins
        )
    elseif self.fullpagealign == 'staffline' then
        local top_distance = 4 * tex_top / self.staffsize + 2
        local bottom_distance = 4 * tex_bottom / self.staffsize + 2
        return string.format([[
    top-margin = 0\pt
    bottom-margin = 0\pt
    %s
    top-system-spacing =
    #'((basic-distance . %s)
        (minimum-distance . %s)
        (padding . 0)
        (stretchability . 0))
    top-markup-spacing =
    #'((basic-distance . %s)
        (minimum-distance . %s)
        (padding . 0)
        (stretchability . 0))
    last-bottom-spacing =
    #'((basic-distance . %s)
        (minimum-distance . %s)
        (padding . 0)
        (stretchability . 0))
]],
            horizontal_margins,
            top_distance,
            top_distance,
            top_distance,
            top_distance,
            bottom_distance,
            bottom_distance
        )
    else
        err([[
Invalid argument for option 'fullpagealign'.
Allowed: 'crop', 'staffline'.
Given: %s
]],
            self.fullpagealign
        )
    end
end

function Score:ly_paper()
    local system_count =
        self['system-count'] == 0 and ''
        or 'system-count = '..self['system-count']..'\n    '

    local papersize = '#(set-paper-size "'..(self.papersize or 'lyluatexfmt')..'")'
    if self.insert == 'fullpage' then
        local first_page_number = self['first-page-number'] or tex.count['c@page']
        local pfpn = self['print-first-page-number'] and 't' or 'f'
        local ppn = self['print-page-number'] and 't' or 'f'
        return string.format([[
%s%s
    print-page-number = ##%s
    print-first-page-number = ##%s
    first-page-number = %s
%s]],
          system_count, papersize, ppn, pfpn,
          first_page_number, self:ly_margins()
	    )
    else
        if self.papersize then
            papersize = papersize..[[
]]
        else
            papersize = ''
        end

        return string.format([[%s%s]], papersize, system_count)
    end
end

function Score:ly_preamble()
    if self.insert == 'fullpage' then
        return string.format(
            [[#(set! paper-alist (cons '("lyluatexfmt" . (cons (* %s pt) (* %s pt))) paper-alist))]],
            self.paperwidth, self.paperheight
	    )
    else return [[\include "lilypond-book-preamble.ly"]]
    end
end

function Score:ly_raggedright()
    if self['ragged-right'] ~= 'default' then
        if self['ragged-right'] then return 'ragged-right = ##t'
        else return 'ragged-right = ##f'
        end
    end
end

function Score:ly_staffprops()
    local clef, timing, timesig, staff = '', '', '', ''
    if self.noclef then clef = [[\context { \Staff \remove "Clef_engraver" }]] end
    if self.notiming then timing = [[\context { \Score timing = ##f }]] end
    if self.notimesig then timesig = [[\context { \Staff \remove "Time_signature_engraver" }]] end
    if self.nostaffsymbol then staff = [[\context { \Staff \remove "Staff_symbol_engraver" }]] end
    return string.format('%s\n%s\n%s\n%s', clef, timing, timesig, staff)
end

function Score:ly_twoside() if self.twoside then return 't' else return 'f' end end

function Score:ly_version() return self['ly-version'] end

function Score:optimize_pdf()
    if not self['optimize-pdf'] then return end
    if self:lilypond_has_TeXGS() and not ly.final_optimization_message then
        ly.final_optimization_message = true
        luatexbase.add_to_callback(
            'stop_run',
            function()
                info(
                    [[Optimization enabled: remember to run
                    'gs -q -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=%s %s'.]],
                    tex.jobname..'-final.pdf', tex.jobname..'.pdf'
                )
            end,
            'lyluatex optimize-pdf'
        )
    end
    local pdf2ps, ps2pdf, path
    for file in lfs.dir(self.tmpdir) do
        path = self.tmpdir..'/'..file
        if path:match(self.output) and path:sub(-4) == '.pdf' then
            pdf2ps = io.popen(
                'gs -q -sDEVICE=ps2write -sOutputFile=- -dNOPAUSE '..path..' -c quit',
                'r'
            )
            ps2pdf = io.popen(
                'gs -q -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile='..path..'-gs -',
                'w'
            )
            if pdf2ps then
                ps2pdf:write(pdf2ps:read('*a'))
                pdf2ps:close()
                ps2pdf:close()
                os.rename(path..'-gs', path)
            else
                warn(
                    [[You have asked for pdf optimization, but gs wasn't found.]]
                )
            end
        end
    end
end

function Score:output_filename()
    local properties = ''
    for k, _ in lib.orderedpairs(ly_opts.declarations) do
        if (not lib.contains(HASHIGNORE, k)) and self[k] and type(self[k]) ~= 'function' then
            properties = properties..'\n'..k..'\t'..self[k]
        end
    end
    if self.insert == 'fullpage' then
        properties = properties..
            self:tex_margin_top()..self:tex_margin_bottom()..
            self:tex_margin_left()..self:tex_margin_right()
    end
    local filename = md5.sumhexa(self:flatten_content(self.ly_code)..properties)
    return self.tmpdir..'/'..filename
end

function Score:process()
    self:check_properties()
    self:calc_properties()
    if not self:lilypond_version() then
        local warning = [[
LilyPond could not be started.
Please check that LuaLaTeX is started with the
--shell-escape option, and that 'program'
points to a valid LilyPond executable.
]]
        if self.showfailed then
            warn(warning)
            tex.sprint(string.format([[
\begin{quote}
\minibox[frame]{LilyPond could not be started.}
\end{quote}

]]))
            return
        else
            err(warning)
        end
    end
    -- with bbox.read check_protrusion will only execute with
    -- a prior compilation, otherwise it will be ignored
    local do_compile = not self:check_protrusion(bbox.read)
    if self['force-compilation'] or do_compile then
        repeat
            self.complete_ly_code = self:header()..self:content()..self:footer()
            self:run_lilypond()
            self['force-compilation'] = false
            if self:is_compiled() then table.insert(self.output_names, self.output)
            else
                self:clean_failed_compilation()
                break
            end
        until self:check_protrusion(bbox.get)
        self:optimize_pdf()
    else table.insert(self.output_names, self.output)
    end
    set_lyscore(self)
    if self:count_systems() == 0 then
        warn([[
The score doesn't contain any music:
this will probably cause bad output.]]
        )
    end
    if not self['raw-pdf'] then self:write_latex(do_compile) end
    self:write_to_filelist()
    if not self.debug then self:delete_intermediate_files() end
end

function Score:run_lily_proc(p)
        if self.debug then
          local f = io.open(self.output..".log", 'w')
          f:write(p:read('*a'))
          f:close()
        else p:write(self.complete_ly_code)
        end
        return p:close()
    end

function Score:run_lilypond()
    if self:is_compiled() then return end
    lib.mkdirs(lib.dirname(self.output))
    if not self:run_lily_proc(io.popen(self:lilypond_cmd(self.complete_ly_code))) and not self.debug then
        self.debug = true
        self.lilypond_error = not self:run_lily_proc(io.popen(self:lilypond_cmd(self.complete_ly_code)))
    end
end

function Score:tex_margin_bottom()
    self._tex_margin_bottom = self._tex_margin_bottom or
        lib.convert_unit(tex.dimen.paperheight..'sp')
        - self:tex_margin_top()
        - lib.convert_unit(tex.dimen.textheight..'sp')
    return self._tex_margin_bottom
end

function Score:tex_margin_inner()
    self._tex_margin_inner = self._tex_margin_inner or
        lib.convert_unit((
          tex.sp('1in') + tex.dimen.oddsidemargin + tex.dimen.hoffset
        )..'sp')
    return self._tex_margin_inner
end

function Score:tex_margin_outer()
    self._tex_margin_outer = self._tex_margin_outer or
        lib.convert_unit((tex.dimen.paperwidth - tex.dimen.textwidth)..'sp')
        - self:tex_margin_inner()
    return self._tex_margin_outer
end

function Score:tex_margin_left()
    if self:is_odd_page() or not self.twopage then return self:tex_margin_inner()
    else return self:tex_margin_outer()
    end
end

function Score:tex_margin_right()
    if self:is_odd_page() or not self.twopage then return self:tex_margin_outer()
    else return self:tex_margin_inner()
    end
end

function Score:tex_margin_top()
    self._tex_margin_top = self._tex_margin_top or
        lib.convert_unit((
            tex.sp('1in') + tex.dimen.voffset + tex.dimen.topmargin
            + tex.dimen.headheight + tex.dimen.headsep
        )..'sp')
    return self._tex_margin_top
end

function Score:write_latex(do_compile)
    latex.filename(self.printfilename, self.insert, self.input_file)
    latex.verbatim(self.verbatim, self.ly_code, self.intertext, self.addversion)
    if do_compile and not self:check_compilation() then return end
    --[[ Now we know there is a proper score --]]
    latex.fullpagestyle(self.fullpagestyle, self['print-page-number'])
    latex.label(self.label, self.labelprefix)
    if self.insert == 'fullpage' then
        latex.includepdf(self.output, self.range, self.papersize)
    elseif self.insert == 'systems' then
        latex.includesystems(
            self.output, self.range, self.protrusion_left,
            self.leftgutter, self.staffsize, self.indent_offset
        )
    else  -- inline
        if self:count_systems() > 1 then
            warn([[
Score with more than one system included inline.
This will probably cause bad output.]]
            )
        end
        local bb = self:bbox(1)
        if bb then
            latex.includeinline(
                self.output, bb.height, self.valign, self.hpadding, self.voffset
            )
        end
    end
end

function Score:write_to_filelist()
    local f = io.open(FILELIST, 'a')
    for _, file in pairs(self.output_names) do
        local _, filename = file:match('(./+)(.*)')
        f:write(filename, '\t', self.input_file or '', '\t', self.label or '', '\n')
    end
    f:close()
end


--[[ ========================== Public functions ========================== --]]


function ly.buffenv_begin()

    function ly.buffenv(line)
        table.insert(ly.score_content, line)
        if line:find([[\end{%w+}]]) then return end
        return ''
    end

    ly.score_content = {}
    luatexbase.add_to_callback('process_input_buffer', ly.buffenv, 'readline')
end


function ly.buffenv_end()
    luatexbase.remove_from_callback('process_input_buffer', 'readline')
    table.remove(ly.score_content)
end


function ly.clean_tmp_dir()
    local hash, file_is_used
    local hash_list = {}
    for file in lfs.dir(Score.tmpdir) do
        if file:sub(-5, -1) == '.list' then
            local i = io.open(Score.tmpdir..'/'..file)
            for _, line in ipairs(i:read('*a'):explode('\n')) do
                hash = line:explode('\t')[1]
                if hash ~= '' then table.insert(hash_list, hash) end
            end
            i:close()
        end
    end
    for file in lfs.dir(Score.tmpdir) do
        if file ~= '.' and file ~= '..' and file:sub(-5, -1) ~= '.list' then
            for _, lhash in ipairs(hash_list) do
                file_is_used = file:find(lhash)
                if file_is_used then break end
            end
            if not file_is_used then os.remove(Score.tmpdir..'/'..file) end
        end
    end
end


function ly.conclusion_text()
    info([[
Output written on %s.pdf.
Transcript written on %s.log.
]],
        tex.jobname, tex.jobname
    )
end


function ly.make_list_file()
    local tmpdir = ly_opts.tmpdir
    lib.mkdirs(tmpdir)
    FILELIST = tmpdir..'/'..lib.splitext(status.log_name, 'log')..'.list'
    os.remove(FILELIST)
end

function ly.file(input_file, options)
    --[[ Here, we only take in account global option includepaths,
    as it really doesn't mean anything as a local option. --]]
    local file = locate(input_file, Score.includepaths, '.ly')
    options = ly_opts:check_local_options(options)
    if not file then err("File %s doesn't exist.", input_file) end
    local i = io.open(file, 'r')
    ly.score = Score:new(i:read('*a'), options, file)
    i:close()
end


function ly.file_musicxml(input_file, options)
    --[[ Here, we only take in account global option includepaths,
    as it really doesn't mean anything as a local option. --]]
    local file = locate(input_file, Score.includepaths, '.xml')
    options = ly_opts:check_local_options(options)
    if not file then err("File %s doesn't exist.", input_file) end
    local xmlopts = ''
    for _, opt in pairs(MXML_OPTIONS) do
        if options[opt] ~= nil then
            if options[opt] then xmlopts = xmlopts..' --'..opt
                if options[opt] ~= 'true' and options[opt] ~= '' then
                    xmlopts = xmlopts..' '..options[opt]
                end
            end
        elseif ly_opts[opt] then xmlopts = xmlopts..' --'..opt
        end
    end
    local i = io.popen(ly_opts.xml2ly..' --out=-'..xmlopts..' "'..file..'"', 'r')
    if not i then
        err([[
%s could not be started.
Please check that LuaLaTeX is started with the
--shell-escape option.
]],
            ly_opts.xml2ly
        )
    end
    ly.score = Score:new(i:read('*a'), options, file)
    i:close()
end


function ly.fragment(ly_code, options)
    options = ly_opts:check_local_options(options)
    if type(ly_code) == 'string' then
        ly_code = ly_code:gsub('\\par ', '\n'):gsub('\\([^%s]*) %-([^%s])', '\\%1-%2')
    else ly_code = table.concat(ly_code, '\n')
    end
    ly.score = Score:new(ly_code, options)
end


function ly.get_font_family(font_id)
    return lib.fontinfo(font_id).shared.rawdata.metadata['familyname']
end


function ly.newpage_if_fullpage()
    if ly.score.insert == 'fullpage' then tex.sprint([[\newpage]]) end
end


function ly.set_fonts(rm, sf, tt)
if ly.score.rmfamily..ly.score.sffamily..ly.score.ttfamily ~= '' then
    ly.score['pass-fonts'] = 'true'
    info("At least one font family set explicitly. Activate 'pass-fonts'")
end
  if ly.score.rmfamily == '' then ly.score.rmfamily = ly.get_font_family(rm)
  else
      -- if explicitly set don't override rmfamily with 'current' font
      if ly.score['current-font-as-main'] then
          info("rmfamily set explicitly. Deactivate 'current-font-as-main'")
      end
      ly.score['current-font-as-main'] = false
  end
  if ly.score.sffamily == '' then ly.score.sffamily = ly.get_font_family(sf) end
  if ly.score.ttfamily == '' then ly.score.ttfamily = ly.get_font_family(tt) end
end


function ly.write_to_file(file, content)
    local f = io.open(Score.tmpdir..'/'..file, 'w')
    if not f then err('Unable to write to file %s', file) end
    f:write(content)
    f:close()
end

return ly