summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/scripts/tlshell/tlshell.tcl
blob: 8855a6918375417e55ef68e3976f6bcaffc66a32 (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
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
#!/usr/bin/env wish

# Copyright 2017, 2018 Siep Kroonenberg

# This file is licensed under the GNU General Public License version 2
# or any later version.

package require Tk

# security: disable send
catch {rename send {}}

# unix: make sure TL comes first on process searchpath
# on windows, runscript takes care of this.
if {$::tcl_platform(platform) ne "windows"} {
  set texbin [file dirname [file normalize [info script]]]
  set savedir [pwd]
  cd $texbin
  set texbin [pwd]
  cd $savedir
  # prepend texbin to PATH, unless it is already the _first_
  # path component
  set dirs [split $::env(PATH) ":"]
  if {[lindex $dirs 0] ne $texbin} {
    set ::env(PATH) "${texbin}:$::env(PATH)"
  }
  unset texbin
  unset savedir
  unset dirs
}

# declarations and utilities shared with install-tl-gui.tcl
set ::instroot [exec kpsewhich -var-value=TEXMFROOT]
source [file join $::instroot "tlpkg" "tltcl" "tltcl.tcl"]

# now is a good time to ask tlmgr for the _TL_ name of our platform
set ::our_platform [exec -ignorestderr tlmgr print-platform]

# searchpath and locale:
# windows: most scripts run via [w]runscript, which adjusts the searchpath
# for the current process.
# tlshell.tcl should  be run via a symlink in a directory
# which also contains (a symlink to) kpsewhich.
# This directory will be prepended to the searchpath.
# kpsewhich should disentangle symlinks.

# dis/enable the restore dialog
set do_restore 0

# tlcontrib
set tlcontrib "http://contrib.texlive.info/current"

# dis/enable debug output (only for private development purposes)
set ddebug 0

##### general housekeeping ############################################

# menus: disable tearoff feature
option add *Menu.tearOff 0

proc search_nocase {needle haystack} {
  if {$needle eq ""} {return -1}
  if {$haystack eq ""} {return -1}
  return [string first [string tolower $needle] [string tolower $haystack]]
}

# the stderr and stdout of tlmgr are each read into lists of strings
set err_log {}
set out_log {}

#### debug output, ATM only for private development purposes ####

if $ddebug {set dbg_log {}}

proc do_debug {s} {
  if $::ddebug {
    puts stderr $s
    # On windows, stderr output goes nowhere.
    # Therefore also debug output for the log dialog.
    lappend ::dbg_log $s
    # Track debug output in the log dialog if it is running:
    if [winfo exists .tllg.dbg.tx] {
      .tllg.dbg.tx configure -state normal
      .tllg.dbg.tx insert end "$s\n"
      if {$::tcl_platform(os) ne "Darwin"} {
        .tllg.dbg.tx configure -state disabled
      }
    }
  }
} ; # do_debug

proc maketemp {ext} {
  set fname ""
  foreach i {0 1 2 3 4 5 6 7 8 9} { ; # ten tries
    set fname [file join $::tempsub "[expr {int(10000.0*rand())}]$ext"]
    if {[file exist $fname]} {set fname ""; continue}
    # create empty file. although we just want a name,
    # we must make sure that it can be created.
    set fid [open $fname w]
    close $fid
    if {! [file exists $fname]} {error "Cannot create temporary file"}
    if {$::tcl_platform(platform) eq "unix"} {
      file attributes $fname -permissions 0600
    }
    break
  }
  if {$fname eq ""} {error "Cannot create temporary file"}
  return $fname
} ; # maketemp

set tempsub "" ; # subdir for temp files, set during initialization

### GUI utilities #####################################################

# mouse clicks: deal with MacOS platform differences
if {[tk windowingsystem] eq "aqua"} {
  event add <<RightClick>> <ButtonRelease-2> <Control-ButtonRelease-1>
} else {
  event add <<RightClick>> <ButtonRelease-3>
}

## default_bg color, only used for menus under ::plain_unix
if [catch {ttk::style lookup TFrame -background} ::default_bg] {
  set ::default_bg white
}

# dialog with textbox
proc long_message {str type {p "."}} {
  # alternate messagebox implemented as custom dialog
  # not all message types are supported
  if {$type ne "ok" && $type ne "okcancel" && $type ne "yesnocancel"} {
    err_exit "Unsupported type $type for long_message"
  }
  create_dlg .tlmg $p

  # wallpaper frame; see populate_main
  pack [ttk::frame .tlmg.bg] -fill both -expand 1

  # buttons
  pack [ttk::frame .tlmg.bts] -in .tlmg.bg -side bottom -fill x
  if {$type eq "ok" || $type eq "okcancel"} {
    ttk::button .tlmg.ok -text [__ "Ok"] -command "end_dlg \"ok\" .tlmg"
    ppack .tlmg.ok -in .tlmg.bts -side right
  }
  if {$type eq "yesnocancel"} {
    ttk::button .tlmg.yes -text [__ "Yes"] -command "end_dlg \"yes\" .tlmg"
    ppack .tlmg.yes -in .tlmg.bts -side right
    ttk::button .tlmg.no -text [__ "No"] -command "end_dlg \"no\" .tlmg"
    ppack .tlmg.no -in .tlmg.bts -side right
  }
  if {$type eq "yesnocancel" || $type eq "okcancel"} {
    ttk::button .tlmg.cancel -text [__ "Cancel"] -command \
        "end_dlg \"cancel\" .tlmg"
    ppack .tlmg.cancel -in .tlmg.bts -side right
  }
  if [winfo exists .tlmg.cancel] {
    bind .tlmg <Escape> {.tlmg.cancel invoke}
  } elseif {$type eq "ok"} {
    bind .tlmg <Escape> {.tlmg.ok invoke}
  }

  ppack [ttk::frame .tlmg.tx] -in .tlmg.bg -side top -fill both -expand 1
  pack [ttk::scrollbar .tlmg.tx.scroll -command ".tlmg.tx.txt yview"] \
      -side right -fill y
  ppack [text .tlmg.tx.txt -height 20 -width 60 -bd 2 -relief groove \
      -wrap word -yscrollcommand ".tlmg.tx.scroll set"] -expand 1 -fill both

  .tlmg.tx.txt insert end $str
  .tlmg.tx.txt configure -state disabled

  # default resizable
  place_dlg .tlmg $p
  tkwait window .tlmg
  return $::dialog_ans
} ; # long_message

proc any_message {str type {p "."}} {
  if {[string length $str] < 400} {
    if {$type ne "ok"} {
      return [tk_messageBox -message $str -type $type -parent $p \
                 -icon question]
    } else {
      return [tk_messageBox -message $str -type $type -parent $p]
    }
  } else {
    # just hope that tcl will do the right thing with multibyte characters
    if {[string length $str] > 500000} {
      set str [string range $str 0 500000]
      append str "\n....."
    }
    return [long_message $str $type $p]
  }
} ; # any_message

### enabling and disabling user interaction

proc selective_dis_enable {} {
  # disable actions which make no sense at the time

  # buttons in the middle section
  set pkg_buttons [list .mrk_inst .mrk_upd .mrk_rem .upd_tlmgr .upd_all]
  foreach b [list .mrk_inst .mrk_upd .mrk_rem .upd_tlmgr .upd_all] {
    $b state !disabled
  }
  if $::do_restore {.mrk_rest state !disabled}

  if {!$::have_remote} {
    foreach b [list .mrk_inst .mrk_upd .upd_tlmgr .upd_all] {
      $b state disabled
    }
  } elseif {!$::n_updates} {
    foreach b [list .mrk_upd .upd_tlmgr .upd_all] {
      $b state disabled
    }
  } elseif $::need_update_tlmgr {
    foreach b [list .mrk_inst .mrk_upd] {
      $b state disabled
    }
  } elseif {!$::need_update_tlmgr} {
    .upd_tlmgr state disabled
  }

  # platforms menu item
  if {$::tcl_platform(platform) ne "windows"} {
    if {!$::have_remote || $::need_update_tlmgr}  {
      .mn.opt entryconfigure $::inx_platforms -state disabled
    } else {
      .mn.opt entryconfigure $::inx_platforms -state normal
    }
  }
}; # selective_dis_enable

proc total_dis_enable {y_n} {
  # to be invoked when tlmgr becomes busy or idle,, i.e.
  # if it starts with a tlmgr command through run_cmds
  # or read_line notices the command(s) ha(s|ve) ended.
  # This proc should cover all active interface elements of the main window.
  # But if actions are initiated via a dialog, the main window can be
  # deactivated by a grab and focus on the dialog instead.

  if {!$y_n} {
    . configure -menu .mn_empty
    foreach c [winfo children .] {
      if {$c ne ".showlogs" && [winfo class $c] in \
              [list TButton TCheckbutton TRadiobutton TEntry Treeview]} {
        # this should cover all relevant widgets in the main window
        $c state disabled
      }
    }
    set ::busy [__ "Running"]
  } else {
    . configure -menu .mn
    foreach c [winfo children .] {
      if {[winfo class $c] in \
              [list TButton TCheckbutton TRadiobutton TEntry Treeview]} {
        $c state !disabled
      }
    }
    set ::busy [__ "Idle"]
    selective_dis_enable
  }
} ; # total_dis_enable

##### tl global data ##################################################

set ::last_cmd ""

set ::progname [info script]
regexp {^.*[\\/]([^\\/\.]*)(?:\....)?$} $progname dummy ::progname
set ::procid [pid]

# package repositories
array unset ::repos

# mirrors: dict of dicts of lists of urls per country per continent
set ::mirrors [dict create]

# dict of (local and global) package dicts
set ::pkgs [dict create]

# platforms
set ::platforms [dict create]

set ::have_remote 0 ; # remote packages info not yet loaded
set ::need_update_tlmgr 0
set ::n_updates 0
set ::tlshell_updatable 0

## data to be displayed ##

# sorted display data for packages; package data stored as lists
set ::filtered [dict create]

# selecting packages for display: status and detail
set ::stat_opt "inst"
set ::dtl_opt "all"
# searching packages for display; also search short descriptions?
set ::search_desc 0

##### handling tlmgr via pipe and stderr tempfile #####################

set ::prmpt "tlmgr>"
set ::busy [__ "Running"]

# copy logs to log window yes/no
set ::show_output 0

# about [chan] gets:
# if a second parameter, in this case l, is supplied
# then this variable receives the result, with EOL stripped,
# and the return value is the string length, possibly 0
# EOF is indicated by a return value of -1.

proc read_err_tempfile {} {
  set len 0
  while 1 {
    set len [chan gets $::err l]
    if {$len >= 0} {
      lappend ::err_log $l
    } else {
      break
    }
  }
} ; # read_err_tempfile

proc err_exit {} {
  do_debug "error exit"
  read_err_tempfile
  any_message [join $::err_log "\n"] "ok"
  exit
} ; # err_exit

# Capture stdout of tlmgr into a pipe $::tlshl,
# stderr into a temp file file $::err_file which is set at initialization.

proc start_tlmgr {{args ""}} {
  # Start the TeX Live Manager shell interface.
  # Below, vwait ::done_waiting forces tlshell
  # to process initial tlmgr output before continuing.
  unset -nocomplain ::done_waiting
  do_debug "opening tlmgr"
  if [catch \
          {open "|tlmgr $args --machine-readable shell 2>>$::err_file" w+} \
          ::tlshl] {
    tk_messageBox -message [get_stacktrace]
    exit
  }
  set ::perlpid [pid $::tlshl]
  do_debug "done opening tlmgr"
  set ::err [open $::err_file r]
  chan configure $::tlshl -buffering line -blocking 0
  chan event $::tlshl readable read_line
  vwait ::done_waiting
} ; # start_tlmgr

proc close_tlmgr {} {
  catch {chan close $::tlshl}
  catch {chan close $::err}
  set ::perlpid 0
}; # close_tlmgr

# read a line of tlmgr output
proc read_line {} {
  # a caller of run_cmd needs to explicitly invoke 'vwait ::done_waiting'
  # if it wants to wait for the command to finish
  set l "" ; # will contain the line to be read
  if {([catch {chan gets $::tlshl l} len] || [chan eof $::tlshl])} {
    #do_debug "read_line: failing to read "
    puts stderr "Read failure; tlmgr command was $::last_cmd"
    if {! [catch {chan close $::tlshl}]} {set ::perlpid 0}
    # note. the right way to terminate is terminating the GUI shell.
    # This closes stdin of tlmgr shell.
    err_exit
  } elseif {$len >= 0} {
    # do_debug "read: $l"
    if $::ddebug {puts $::flid $l}
    if {[string first $::prmpt $l] == 0} {
      # prompt line: we are done with the current command
      total_dis_enable 1 ; # this may have to be redone later
      # catch up with stderr
      read_err_tempfile
      if $::show_output {
        do_debug "prompt found, $l"
        log_widget_finish
      }
      # for vwait:
      set ::done_waiting 1
      set ::show_output 0
    } else {
      # regular output
      lappend ::out_log $l
      if $::show_output {
        log_widget_add $l
      }
    }
  }
} ; # read_line

# copy error strings to error page in logs dialog .tllg and send it to top.
# This by itself does not map the logs dialog .tllg

proc show_err_log {} {
  #do_debug "show_err_log"
  .tllg.err.tx configure -state normal
  .tllg.err.tx delete 1.0 end
  if {[llength $::err_log] > 0} {
    foreach l $::err_log {.tllg.err.tx insert end "$l\n"}
    .tllg.err.tx yview moveto 1
    .tllg.logs select .tllg.err
  }
  if {$::tcl_platform(os) ne "Darwin"} {
    # os x: text widget disabled => no selection possible
    .tllg.err.tx configure -state disabled
  }
} ; # show_err_log

proc log_widget_init {} {
  show_logs ; # create the logs dialog
  .tllg.status configure -text [__ "Running"]
  .tllg.close configure -state disabled
}

proc log_widget_add l {
  .tllg.log.tx configure -state normal
  .tllg.log.tx insert end "$l\n"
  if {$::tcl_platform(os) ne "Darwin"} {
    .tllg.log.tx configure -state disabled
  }
}

proc log_widget_finish {} {
  .tllg.log.tx yview moveto 1
  .tllg.logs select .tllg.log
  # error log on top if it contains anything
  show_err_log
  if {$::tcl_platform(os) ne "Darwin"} {
    .tllg.log.tx configure -state disabled
  }
  .tllg.status configure -text [__ "Idle"]
  .tllg.close configure -state !disabled
  bind .tllg <Escape> {.tllg.close invoke}
}

##### running tlmgr commands #####

# run a list of commands
proc run_cmds {cmds {show 0}} {
  set ::show_output $show
  do_debug "run_cmds \"$cmds\""
  if $::ddebug {puts $::flid "\n$cmds"}
  set ::out_log {}
  set ::err_log {}
  if $show {
    show_logs
    .tllg.status configure -text [__ "Running"]
    .tllg.close configure -state disabled
  }
  set l [llength $cmds]
  for {set i 0} {$i<$l} {incr i} {
    set cmd [lindex $cmds $i]
    set ::last_cmd $cmd
    unset -nocomplain ::done_waiting
    # disable widgets for each new command,
    # since read_line will re-enable them
    # when a particular command is finished
    total_dis_enable 0
    chan puts $::tlshl $cmd
    chan flush $::tlshl
    if {$i < [expr {$l-1}]} {vwait ::done_waiting}
  }
} ; # run_cmds

# run a single command
proc run_cmd {cmd {show 0}} {
  run_cmds [list $cmd] $show
} ; # run_cmd

proc run_cmd_waiting {cmd} {
  run_cmd $cmd 0
  vwait ::done_waiting
} ; # run_cmd_waiting

##### Handling package info #####

# what invokes what?
# The main 'globals' are (excepting dicts and arrays):

# ::have_remote is initialized to false. It is set to true by
# get_packages_info_remote, and remains true except temporarily at
# a change of repository.

# The other globals ones are ::n_updates, ::need_update_tlmgr and
# ::tlshell_updatable. These are initially set to 0 and re-calculated
# by update_globals.

# update_globals is invoked by get_packages_info_remote and
# update_local_revnumbers. It enables and disables buttons as appropriate.

# displayed global status info is updated by update_globals.
# update button/menu states are set at initialization and updated
# by update_globals, both via the selective_dis_enable proc

# get_packages_info_local is invoked only once, at initialization.  After
# installations and removals, the collected information is updated by
# update_local_revnumbers.
# Both procs also invoke get_platforms

# get_packages_info_remote will be invoked by collect_filtered if
# ::have_remote is false. Afterwards, ::have_remote will be true, and
# therefore get_packages_info_remote will not be called again.
# get_packages_info_remot also invokes get_platforms
# get_packages_info_remote invokes update_globals.

# update_local_revnumbers will be invoked after any updates. It also
# invokes update_globals.

# collect_filtered does not only filter, but also organize the
# information to be displayed.  If necessary, it invokes
# get_packages_info_remote and always invokes display_packages_info.
# It is invoked at initialization, when filtering options change and
# at the end of install-, remove- and update procs.

# display_packages_info is mostly invoked by collect_filtered, but
# also when the search term or the search option changes.

proc check_tlmgr_updatable {} {
  run_cmd_waiting "update --self --list"
  foreach l $::out_log {
    if [regexp {^total-bytes[ \t]+([0-9]+)$} $l m b] {
      do_debug "matches, $b"
      set ::need_update_tlmgr [expr {$b > 0 ? 1 : 0}]
      return
    }
  }
  do_debug "check_tlmgr_uptodate: should not get here"
} ; # check_tlmgr_uptodate

proc is_updatable {nm} {
  set pk [dict get $::pkgs $nm]
  set lr [dict get $pk localrev]
  set rr [dict get $pk remoterev]
  return [expr {$lr > 0 && $rr > 0 && $rr > $lr}]
}

proc update_globals {} {
  if {! $::have_remote} return
  set ::n_updates 0
  foreach nm [dict keys $::pkgs] {
    if [is_updatable $nm] {incr ::n_updates}
  }
  check_tlmgr_updatable
  set ::tlshell_updatable [is_updatable tlshell]

  # also update displayed status info
  if {$::have_remote && $::need_update_tlmgr} {
    .topf.luptodate configure -text [__ "Needs updating"]
  } elseif $::have_remote {
    .topf.luptodate configure -text [__ "Up to date"]
  } else {
    .topf.luptodate configure -text [__ "Unknown"]
  }
  # ... and status of update buttons
  selective_dis_enable
}

# The package display treeview widget in the main window has columns
# for both local and remote revision numbers.
# It gets its data from $::filtered rather than directly from $::pkgs.
# ::pkgs should already be up to date.

# I added a field 'marked' to ::pkgs. It is displayed in the first treeview
# column. This looks better than the treeview tag facilities.
# In ::pkgs, 'marked' is represented as a boolean.
# In ::filtered and .pkglist they are represented as unicode symbols.

# display packages obeying both filter and search string.
# even on a relatively slow system, regenerating .pkglist from ::filtered
# at every keystroke is acceptably responsive.
# with future more advanced search options, this scheme may not suffice.

proc display_packages_info {} {
  # do_debug [get_stacktrace]
  set curr [.pksearch.e get]
  .pkglist delete [.pkglist children {}]
  dict for {nm pk} $::filtered {
    set do_show 0
    if {$curr eq ""} {
      set do_show 1
    } elseif {[search_nocase $curr $nm] >= 0} {
      set do_show 1
    } elseif {$::search_desc && \
          [search_nocase $curr [dict get $::pkgs $nm shortdesc]] >= 0} {
      set do_show 1
    }
    if $do_show {
      .pkglist insert {} end -id $nm -values $pk
    }
  }
} ; # display_packages_info

# (re)create ::filtered dictionary; disregard search string.
# The value associated with each key/package is a list, not another dict.
proc collect_filtered {} {
  do_debug \
      "collect_filtered for $::stat_opt and $::dtl_opt"
  if {$::stat_opt ne "inst" && ! $::have_remote} {
    get_packages_info_remote
  }
  foreach nm [dict keys $::filtered] {
    dict unset ::filtered $nm
  }
  foreach nm [lsort [dict keys $::pkgs]] {
    set pk [dict get $::pkgs $nm]
    set do_show 1
    set mrk [mark_sym [dict get $pk marked]]
    set lr [dict get $pk localrev]
    set rr [dict get $pk remoterev]
    set ct [dict get $pk category]
    if {$::stat_opt eq "inst" && $lr == 0} {
      set do_show 0
    } elseif {$::stat_opt eq "upd" && ($lr == 0 || $rr == 0 || $rr <= $lr)} {
      set do_show 0
    }
    if {! $do_show} continue
    if {$::dtl_opt eq "schm" && $ct ne "Scheme"} {
      set do_show 0
    } elseif {$::dtl_opt eq "coll" && \
        $ct ne "Scheme" && $ct ne "Collection"} {
      set do_show 0
    }
    if {! $do_show} continue

    # collect data to be displayed for $nm
    dict lappend ::filtered $nm $mrk
    dict lappend ::filtered $nm $nm
    set v [dict get $pk localrev]
    set lv [dict get $pk lcatv]
    if {$v eq "0" || $v == 0} {
      set v ""
    } elseif {$lv != 0 && $lv ne ""} {
      set v "$v ($lv)"
    }
    dict lappend ::filtered $nm $v
    set v [dict get $pk remoterev]
    set rv [dict get $pk rcatv]
    if {$v eq "0" || $v == 0} {
      set v ""
    } elseif {$rv != 0 && $rv ne ""} {
      set v "$v ($rv)"
    }
    dict lappend ::filtered $nm $v
    dict lappend ::filtered $nm [dict get $pk shortdesc]
  }
  display_packages_info
} ; # collect_filtered

# derive the set of platforms from the dictionary of packages:
# collect the values $plname from packages 'tex\.$plname'
proc get_platforms {} {
  # guarantee fresh start
  foreach k $::platforms {dict unset ::platforms $k}
  set ::platforms [dict create]
  # glob-style matching: $k should start with "tex."
  foreach k [dict keys $::pkgs "tex.*"] {
    set plname [string range $k 4 end]
    if {$plname eq ""} continue
    set pl [dict create "cur" 0 "fut" 0]
    if {[dict get $::pkgs $k "localrev"] > 0} {
      dict set pl "cur" 1
      dict set pl "fut" 1
    }
    dict set ::platforms $plname $pl
  }
}

# get fresh package list. invoked at program start
# some local packages may not be available online.
# to test, create local dual-platform installation from dvd, try to update
# from more recent linux-only installation

proc get_packages_info_local {} {
  # start from scratch; see also update_local_revnumbers
  foreach nm [dict keys $::pkgs] {
    dict unset ::pkgs $nm
  }
  set ::have_remote 0
  set ::need_update_tlmgr 0
  set ::updatable 0
  set ::tlshell_updatable 0

  run_cmd_waiting \
    "info --only-installed --data name,localrev,cat-version,category,shortdesc"
  set re {^([^,]+),([0-9]+),([^,]*),([^,]*),(.*)$}
  foreach l $::out_log {
    if [regexp $re $l m nm lrev lcatv catg pdescr] {
      # double-quotes in short description: remove outer, unescape inner
      if {[string index $pdescr 0] eq "\""} {
        set pdescr [string range $pdescr 1 end-1]
      }
      set pdescr [string map {\\\" \"} $pdescr]
      dict set ::pkgs $nm \
          [list "marked" 0 "localrev" $lrev "lcatv" $lcatv "remoterev" 0 \
               "rcatv" 0 "category" $catg shortdesc $pdescr]
    }
  }
  get_platforms
} ; # get_packages_info_local

# remote: preserve information on installed packages
proc get_packages_info_remote {} {
  # remove non-local database entries
  foreach k [dict keys $::pkgs] {
    if {! [dict get $::pkgs $k localrev]} {
      dict unset ::pkgs $k
    }
  }
  set ::need_update_tlmgr 0
  set ::updatable 0
  set ::tlshell_updatable 0

  if [catch {run_cmd_waiting \
    "info --data name,localrev,remoterev,cat-version,category,shortdesc"}] {
    do_debug [get_stacktrace]
    tk_messageBox -message [__ "A configured repository is unavailable."]
    return 0
  }
  set re {^([^,]+),([0-9]+),([0-9]+),([^,]*),([^,]*),(.*)$}
  foreach l $::out_log {
    if [regexp $re $l m nm lrev rrev rcatv catg pdescr] {
      # double-quotes in short description: remove outer, unescape inner
      if {[string index $pdescr 0] eq "\""} {
        set pdescr [string range $pdescr 1 end-1]
      }
      set pdescr [string map {\\\" \"} $pdescr]
      if [catch {dict get $::pkgs $nm} pk] {
        # package entry does not yet exist, create it
        dict set ::pkgs $nm [list "marked" 0 "localrev" 0 "lcatv" 0]
      }
      dict set ::pkgs $nm "remoterev" $rrev
      dict set ::pkgs $nm "rcatv" $rcatv
      dict set ::pkgs $nm "category" $catg
      dict set ::pkgs $nm "shortdesc" $pdescr
    }
  }
  get_platforms
  set ::have_remote 1
  .topf.loaded configure -text [__ "Loaded"] -foreground black
  update_globals
  return 1
} ; # get_packages_info_remote

## update ::pkgs after installing packages without going online again.
proc update_local_revnumbers {} {
  do_debug "update_local_revnumbers"
  run_cmd_waiting "info --only-installed --data name,localrev,cat-version"
  set re {^([^,]+),([0-9]+),(.*)$}
  dict for {pk pk_dict} $::pkgs {
    do_debug "zeroing local data for $pk"
    dict set pk_dict "localrev" 0
    dict set pk_dict "lcatv" 0
    dict set ::pkgs $pk $pk_dict
  }
  foreach l $::out_log {
    if [regexp $re $l m pk lr lv] {
      set pk_dict [dict get $::pkgs $pk]
      dict set pk_dict "localrev" $lr
      dict set pk_dict "lcatv" $lv
      dict set ::pkgs $pk $pk_dict
    }
  }
  get_platforms
  update_globals
} ; # update_local_revnumbers

##### Logs notebook ##############################

# if invoked via run_cmds, it tracks progress of (a) tlmgr command(s).
# run_cmds will temporarily disable the close button
# and set .tllg.status to busy via total_dis_enable 0.
# otherwise, it shows the output of the last completed (list of) command(s).

# Note that run_cmds clears ::out_log and ::err_log, but not ::dbg_log.

proc show_logs {} {
  create_dlg .tllg .
  wm title .tllg Logs

  # wallpaper
  pack [ttk::frame .tllg.bg] -fill both -expand 1

  # close button and busy label
  pack [ttk::frame .tllg.bottom] -in .tllg.bg -side bottom -fill x
  ttk::button .tllg.close -text [__ "Close"] -command {end_dlg 0 .tllg}
  ppack .tllg.close -in .tllg.bottom -side right -anchor e
  ppack [ttk::label .tllg.status -anchor w] -in .tllg.bottom -side left
  bind .tllg <Escape> {.tllg.close invoke}

  # notebook pages and scrollbars
  ttk::frame .tllg.log
  pack [ttk::scrollbar .tllg.log.scroll -command ".tllg.log.tx yview"] \
      -side right -fill y
  ppack [text .tllg.log.tx -height 10 -wrap word \
      -yscrollcommand ".tllg.log.scroll set"] \
      -expand 1 -fill both
  .tllg.log.tx configure -state normal
  foreach l $::out_log {
    .tllg.log.tx insert end "$l\n"
  }
  if {$::tcl_platform(os) ne "Darwin"} {.tllg.log.tx configure -state disabled}
  .tllg.log.tx yview moveto 1

  ttk::frame .tllg.err
  pack [ttk::scrollbar .tllg.err.scroll -command ".tllg.err.tx yview"] \
      -side right -fill y
  ppack [text .tllg.err.tx -height 10 -wrap word \
      -yscrollcommand ".tllg.err.scroll set"] \
      -expand 1 -fill both
  .tllg.err.tx configure -state normal
  foreach l $::err_log {
    .tllg.err.tx configure -state normal
    .tllg.err.tx insert end "$l\n"
  }
  if {$::tcl_platform(os) ne "Darwin"} {.tllg.err.tx configure -state disabled}
  .tllg.err.tx yview moveto 1

  if $::ddebug {
    ttk::frame .tllg.dbg
    pack [ttk::scrollbar .tllg.dbg.scroll -command ".tllg.dbg.tx yview"] \
        -side right -fill y
    ppack [text .tllg.dbg.tx -height 10 -bd 2 -relief groove -wrap word \
        -yscrollcommand ".tllg.dbg.scroll set"] \
        -expand 1 -fill both
    .tllg.dbg.tx configure -state normal
    foreach l $::dbg_log {
      .tllg.dbg.tx insert end "$l\n"
    }
    if {$::tcl_platform(os) ne "Darwin"} {
      .tllg.dbg.tx configure -state disabled
    }
    .tllg.dbg.tx yview moveto 1
  }

  # collect pages in notebook widget
  pack [ttk::notebook .tllg.logs] -in .tllg.bg -side top -fill both -expand 1
  .tllg.logs add .tllg.log -text [__ "Output"]
  .tllg.logs add .tllg.err -text [__ "Errors"]
  if $::ddebug {
    .tllg.logs add .tllg.dbg -text "Debug"
    raise .tllg.dbg .tllg.logs
  }
  raise .tllg.err .tllg.logs
  raise .tllg.log .tllg.logs

  # default resizable
  place_dlg .tllg .
} ; # show_logs

##### repositories ###############################################

### mirrors

# turn name into a string suitable for a widget name
proc mangle_name {n} {
  set n [string tolower $n]
  set n [string map {" "  "_"} $n]
  return $n
} ; # mangle_name

set mirrors [dict create]
proc read_mirrors {} {
  if [catch {open [file join [exec kpsewhich -var-value SELFAUTOPARENT] \
                   "tlpkg/installer/ctan-mirrors.pl"] r} fm] {
    do_debug "cannot open mirror list"
    return 0
  }
    set re_geo {^\s*'([^']+)' => \{\s*$}
  set re_url {^\s*'(.*)' => ([0-9]+)}
  set re_clo {^\s*\},?\s*$}
  set starting 1
  set lnum 0 ; # line number for error messages
  set ok 1 ; # no errors encountered yet
  set countries {} ; # aggregate list of countries
  set urls {} ; # aggregate list of urls
  set continent ""
  set country ""
  set u ""
  set in_cont 0
  set in_coun 0
  while {! [catch {chan gets $fm} line] && ! [chan eof $fm]} {
    incr lnum
    if $starting {
      if {[string first "\$mirrors =" $line] == 0} {
        set starting 0
        continue
      } else {
        set ok 0
        set msg "Unexpected line '$line' at start"
        break
      }
    }
    # starting is now dealt with.
    if [regexp $re_geo $line dummy c] {
      if {! $in_cont} {
        set in_cont 1
        set continent $c
        set cont_dict [dict create]
        if {$continent in [dict keys $::mirrors]} {
          set ok 0
          set msg "Duplicate continent $c at line $lnum"
          break
        }
      } elseif {! $in_coun} {
        set in_coun 1
        set country $c
        if {$country in $countries} {
          set ok 0
          set msg "Duplicate country $c at line $lnum"
          break
        }
        lappend countries $country
        dict set cont_dict $country {}
      } else {
        set ok 0
        set msg "Unexpected continent- or country line $line at line $lnum"
        break
      }
    } elseif [regexp $re_url $line dummy u n] {
      if {! $in_coun} {
        set ok 0
        set msg "Unexpected url line $line at line $lnum"
        break
      } elseif {$n ne "1"} {
        continue
      }
      append u "systems/texlive/tlnet"
      if {$u in $urls} {
          set ok 0
          set msg "Duplicate url $u at line $lnum"
          break
      }
      dict lappend cont_dict $country $u
      lappend urls $u
      set u ""
    } elseif [regexp $re_clo $line] {
      if $in_coun {
        set in_coun 0
        set country ""
      } elseif $in_cont {
        set in_cont 0
        dict set ::mirrors $continent $cont_dict
        set continent ""
      } else {
        break ; # should close mirror list
      }
    } ; # ignore other lines
  }
  close $fm
  if {! $ok} {do_debug $msg}
} ; # read_mirrors

proc pick_local_repo {} {
  set tail "tlpkg/texlive.tlpdb"
  set nrep [.tlr.cur cget -text]
  if {! [file exists [file join $nrep $tail]]} {
    # not local, try originally configured $::repos(main)
    set nrep $::repos(main)
    if {! [file exists [file join $nrep $tail]]} {
      # again, not local
      set nrep $::env(HOME) ; # HOME also o.k. for windows
    }
  }
  while 1 {
    set nrep [browse4dir $nrep .tlr]
    if {$nrep ne "" && ! [file exists [file join $nrep $tail]]} {
      tk_messageBox -message [__ "%s not a repository" $nrep] -parent .tlr
      continue
    } else {
      break
    }
  }
  if {$nrep ne ""} {
    .tlr.new delete 0 end
    .tlr.new insert end $nrep
  }
} ; # pick_local_repo

proc get_repos_from_tlmgr {} {
  array unset ::repos
  run_cmd_waiting "option repository"
  set rps ""
  foreach l $::out_log {
    if [regexp {repository\t(.*)$} $l dum rps] break
  }
  if {$rps ne ""} {
    set reps [split $rps " "]
    set nr [llength $reps]
    foreach rp $reps {
      # decode spaces and %
      set rp [string map {"%20" " "} $rp]
      set rp [string map {"%25" "%"} $rp]
      if {! [regexp {^(.+)#(.+)$} $rp dum r t]} {
        # no tag; use repository as its own tag
        set r $rp
        set t $rp
      }
      if {$nr == 1} {
        set t "main"
      }
      set ::repos($t) $r
    }
    if {"main" ni [array names ::repos]} {
      array unset ::repos
    }
  }
}; # get_repos_from_tlmgr

proc set_repos_in_tlmgr {} {
  # tlmgr has no command to replace a single repository;
  # we need to compose opt_location ourselves from $::repos.
  set nr [llength [array names ::repos]]
  set opt_repos ""
  set rp ""
  foreach nm [array names ::repos] {
    if {$nr==1} {
      if {$nm ne "main"} {
        err_exit "Internal error"
      } else {
        set rp $::repos(main)
      }
    } else {
      if {$nm eq $::repos($nm)} {
        set rp $nm
      } else {
        set rp $::repos($nm)
        append rp "#$nm"
      }
    }
    # encode % and spaces
    set rp [string map {"%" "%25"} $rp]
    set rp [string map {" " "%20"} $rp]
    append opt_repos " $rp"
  }
  run_cmd_waiting "repository set [string range $opt_repos 1 end]"
}; # set_repos_in_tlmgr

proc print_repos {} {
  set nms [array names ::repos]
  set c [llength $nms]
  if {$c <= 0} {
    return ""
  } elseif {$c == 1} {
    set nm [lindex $nms 0]
    return $::repos($nm)
  } else {
    set s [__ "multiple repositories"]
    set s "($s)"
    foreach nm $nms {
      append s "\n$::repos($nm)"
      if {$nm ne $::repos($nm)} {append s " ($nm)"}
    }
    return $s
  }
} ; # print_repos

proc repos_commit {} {
  set changes 0
  # first remove pinning if appropriate
  # then set repositories
  # then add pinning if appropriate
  if {! [regexp {^\s*$} [.tlr.new get]]} {
    if {$::repos(main) ne [.tlr.new get]} {
      set ::repos(main) [.tlr.new get]
      set changes 1
    }
  }
  set had_contrib 0
  if $::toggle_contrib {
    set changes 1
    foreach nm [array names ::repos] {
      if {$::repos($nm) eq $::tlcontrib} {
        set had_contrib 1
        run_cmd "pinning remove $nm --all" 0
        run_cmd "pinning remove $::repos($nm) --all" 0
        vwait ::done_waiting
        array unset ::repos $nm
      }
    }
    if {! $had_contrib} {
      set ::repos(tlcontrib) $::tlcontrib
    }
  }
  if $changes {
    set_repos_in_tlmgr
    .topf.lrepos configure -text [print_repos]
    close_tlmgr
    start_tlmgr
    # reload remote package information
    if {$::toggle_contrib && ! $had_contrib} {
      run_cmd_waiting "pinning add tlcontrib \"*\""
    }
    set ::have_remote 0
    get_packages_info_remote
    collect_filtered
  }
} ; # repos_commit

# main repository dialog
proc repository_dialog {} {

  # dialog with
  # - popup menu of mirrors (parse tlpkg/installer/ctan-mirrors.pl)
  # - text entry box
  # - directory browser button
  # - ok and cancel buttons

  create_dlg .tlr .
  wm title .tlr [__ "Main Repository"]

  # wallpaper frame; see populate_main
  pack [ttk::frame .tlr.bg] -expand 1 -fill x

  pack [ttk::frame .tlr.info] -in .tlr.bg -expand 1 -fill x
  grid columnconfigure .tlr.info 1 -weight 1
  set row -1

  # current repository
  incr row
  pgrid [ttk::label .tlr.lcur -text [__ "Current:"]] \
      -in .tlr.info -row $row -column 0 -sticky w
  pgrid [ttk::label .tlr.cur -text $::repos(main)] \
      -in .tlr.info -row 0 -column 1 -sticky w
  # proposed new repository
  incr row
  pgrid [ttk::label .tlr.lnew -text [__ "New"]] \
      -in .tlr.info -row $row -column 0 -sticky w
  pgrid [ttk::entry .tlr.new] \
      -in .tlr.info -row $row -column 1 -columnspan 2 -sticky ew

  ### three ways to specify a repository ###
  pack [ttk::frame .tlr.mirbuttons] -in .tlr.bg -fill x
  # 1. default remote repository
  ttk::button .tlr.ctan -text [__ "Any CTAN mirror"] -command {
    .tlr.new delete 0 end
    .tlr.new insert end $::any_mirror
  }
  ppack .tlr.ctan -in .tlr.mirbuttons -side left -fill x
  # 2. specific repository: create a cascading dropdown menu of mirrors
  destroy .tlr.mir.m
  if {[dict size $::mirrors] == 0} read_mirrors
  do_debug "[dict size $::mirrors] mirrors"
  if {[dict size $::mirrors] > 0} {
    ttk::menubutton .tlr.mir -text [__ "Specific mirror..."] \
        -direction below -menu .tlr.mir.m
    ppack .tlr.mir -in .tlr.mirbuttons -side left -fill x
    menu .tlr.mir.m
    dict for {cont d_cont} $::mirrors {
      set c_ed [mangle_name $cont]
      menu .tlr.mir.m.$c_ed
      .tlr.mir.m add cascade -label $cont -menu .tlr.mir.m.$c_ed
      dict for {cntr urls} $d_cont {
        set n_ed [mangle_name $cntr]
        menu .tlr.mir.m.$c_ed.$n_ed
        .tlr.mir.m.$c_ed add cascade -label $cntr -menu .tlr.mir.m.$c_ed.$n_ed
        foreach u $urls {
          .tlr.mir.m.$c_ed.$n_ed add command -label $u \
              -command ".tlr.new delete 0 end; .tlr.new insert end $u"
        }
      }
    }
  }
  # 3. local repository
  ttk::button .tlr.browse -text [__ "Local directory..."] -command {
    .tlr.new delete 0 end; .tlr.new insert end [pick_local_repo]}
  ppack .tlr.browse -in .tlr.mirbuttons -side left -fill x

  ### add/remove tlcontrib ###
  ttk::label .tlr.contribt -text [__ "tlcontrib additional repository"] \
      -font bfont
  pack .tlr.contribt -in .tlr.bg -anchor w -padx 3 -pady [list 10 3]
  pack [ttk::label .tlr.contribl] -in .tlr.bg -anchor w -padx 3 -pady 3
  ttk::checkbutton .tlr.contribb -variable ::toggle_contrib
  pack .tlr.contribb -in .tlr.bg -anchor w -padx 3 -pady [list 3 10]
  set ::toggle_contrib 0
  set has_contrib 0
  foreach nm [array names ::repos] {
    if {$::repos($nm) eq $::tlcontrib} {
      set has_contrib 1
      set contrib_tag $nm
      break
    }
  }
  if $has_contrib {
    .tlr.contribl configure -text [__ "tlcontrib repository is included"]
    .tlr.contribb configure -text [__ "Remove tlcontrib repository"]
  } else {
    .tlr.contribl configure -text [__ "tlcontrib repository is not included"]
    .tlr.contribb configure -text [__ "Add tlcontrib repository"]
  }

  # two ways to close the dialog
  pack [ttk::frame .tlr.closebuttons] -pady [list 10 0] -in .tlr.bg -fill x
  ttk::button .tlr.save -text [__ "Save and Load"] -command {
    #set ::repos(main) [.tlr.new get]
    repos_commit
    end_dlg "" .tlr
  }
  ppack .tlr.save -in .tlr.closebuttons -side right
  ttk::button .tlr.abort -text [__ "Abort"] -command {end_dlg "" .tlr}
  ppack .tlr.abort -in .tlr.closebuttons -side right
  bind .tlr <Escape> {.tlr.abort invoke}

  wm resizable .tlr 1 0
  place_dlg .tlr .
} ; # repository_dialog

### platforms

if {$::tcl_platform(platform) ne "windows"} {

  proc toggle_pl_marked {pl cl} {
    # toggle_pl_marked is triggered by a mouse click only in column #1.
    # 'fut'[ure] should get updated in ::platforms _and_ in .tlpl.pl.

    if {$cl ne "#1"} return
    if {$pl eq $::our_platform} {
      tk_messageBox -message \
          [__ "Cannot remove own platform %s" $::our_platform] \
          -parent .tlpl
      return
    }
    # $mrk: negation of current value of marked for $pl
    set m1 [expr {[dict get $::platforms $pl "fut"] ? 0 : 1}]
    dict set ::platforms $pl "fut" $m1
    set m0 [dict get $::platforms $pl "cur"]
    if {$m0 == $m1} {
      .tlpl.pl set $pl "sup" [mark_sym $m0]
    } else {
      .tlpl.pl set $pl "sup" "[mark_sym $m0] \u21d2 [mark_sym $m1]"
    }
    .tlpl.do configure -state disabled
    dict for {p mrks} $::platforms {
      if {[dict get $mrks "fut"] ne [dict get $mrks "cur"]} {
        .tlpl.do configure -state !disabled
        break
      }
    }
  } ; # toggle_pl_marked

  proc platforms_commit {} {
    set pl_add {}
    set pl_remove {}
    dict for {p pd} $::platforms {
      if {[dict get $pd "cur"] ne [dict get $pd "fut"]} {
        if {[dict get $pd "fut"]} {
          lappend pl_add $p
        } else {
          lappend pl_remove $p
        }
      }
    }
    if {[llength $pl_add] == 0 && [llength $pl_remove] == 0} return
    set cmds {}
    if {[llength $pl_add] > 0} {
      set cmd "platform add "
      append cmd [join $pl_add " "]
      lappend cmds $cmd
    }
    if {[llength $pl_remove] > 0} {
      set cmd "platform remove "
      append cmd [join $pl_remove " "]
      lappend cmds $cmd
    }
    run_cmds $cmds 1
    vwait ::done_waiting
    update_local_revnumbers
    collect_filtered

  } ; # platforms_do

  # the platforms dialog
  proc platforms_select {} {
    create_dlg .tlpl
    wm title .tlpl [__ "Platforms"]
    if $::plain_unix {wm attributes .tlpl -type dialog}

    # wallpaper frame
    pack [ttk::frame .tlpl.bg] -expand 1 -fill both

    # buttons
    pack [ttk::frame .tlpl.but] -in .tlpl.bg -side bottom -fill x
    ttk::button .tlpl.do -text [__ "Apply and close"] -command {
      platforms_commit; end_dlg "" .tlpl
    }
    ttk::button .tlpl.dont -text [__ "Close"] -command \
        {end_dlg "" .tlpl}
    ppack .tlpl.do -in .tlpl.but -side right
    .tlpl.do configure -state disabled
    ppack .tlpl.dont -in .tlpl.but -side right
    bind .tlpl <Escape> {.tlpl.dont invoke}

    # platforms treeview; do we need a scrollbar?
    pack [ttk::frame .tlpl.fpl] -in .tlpl.bg -fill both -expand 1
    ttk::treeview .tlpl.pl -columns {sup plat} -show headings \
        -height [dict size $::platforms] -yscrollcommand {.tlpl.plsb set}
    ppack .tlpl.pl -in .tlpl.fpl -side left -fill both -expand 1
    ttk::scrollbar .tlpl.plsb -orient vertical \
        -command {.tlpl.pl yview}
    ppack .tlpl.plsb -in .tlpl.fpl -side right -fill y -expand 1
    #.tlpl.pl heading sup -text ""
    .tlpl.pl column sup -width [expr {$::cw * 8}]
    .tlpl.pl heading plat -text [__ "platform"] -anchor w
    .tlpl.pl column plat -width [expr {$::cw * 20}]
    dict for {p mks} $::platforms {
      .tlpl.pl insert {} end -id $p -values \
          [list [mark_sym [dict get $mks "cur"]] $p]
    }

    # "#2" refers to the second column, with editable mark symbols
    bind .tlpl.pl <space> {toggle_pl_marked [.tlpl.pl focus] "#1"}
    bind .tlpl.pl <Return> {toggle_pl_marked [.tlpl.pl focus] "#1"}
    # only toggle when column is "sup" i.e. #1
    bind .tlpl.pl <ButtonRelease-1> \
        {toggle_pl_marked \
             [.tlpl.pl identify item %x %y] \
             [.tlpl.pl identify column %x %y]}

    wm resizable .tlpl 0 1
    place_dlg .tlpl .
  } ; # platforms_select

} ; # $::tcl_platform(platform) ne "windows"

##### restore from backup #####

# This is currently rather dangerous.
# ::do_restore is set to 0 or 1 near the top of this source.
# This code, currently disbled, has not been tested in a while.

if $::do_restore {
# dictionary of backups, with mapping to list of available revisions
set bks {}

proc enable_restore {y_n} {
  set st [expr {$y_n ? !disabled : disabled}]
  .tlbk.bklist state $st
  .tlbk.all configure -state $st
  .tlbk.done configure -state $st
} ; # enable_restore

proc finish_restore {} {
  vwait ::done_waiting
  # now log_widget_finish should have run and re-enabled its close button.
  # We won't wait for the log dialog to close, but we will
  # update the packages display in the main window.
  update_local_revnumbers
  collect_filtered
} ; # finish_restore

proc restore_all {} {
  run_cmd "restore --force --all" 1
  finish_restore
} ; # restore_all

proc restore_this {} {
  set id [.tlbk.bklist focus]
  if {$id eq {}} return
  set r [.tlbk.bklist set $id rev]
  if {$r eq {}} return
  set p [.tlbk.bklist set $id pkg]
  if {$p eq {}} {
    set id [.tlbk.bklist parent $id]
    if {$id ne {}} {set p [.tlbk.bklist set $id pkg]}
  }
  if {$p eq {}} return
  set ans [tk_messageBox -message [__ "Restore %s to revision %s?" $p $r] \
               -type okcancel -parent .tlbk]
  if {$ans ne {ok}} return
  run_cmd "restore --force $p $r" 1
  finish_restore
} ; # restore_this

proc bklist_callback_click {x y} {
  set cl [.tlbk.bklist identify column $x $y]
  if {$cl eq "#0"} return
  set id [.tlbk.bklist identify item $x $y]
  .tlbk.bklist focus $id
  restore_this
} ; # bklist_callback_click

proc restore_backups_dialog {} {
  run_cmd_waiting "option autobackup"
  set re {autobackup\t(.*)$}
  set abk 0
  foreach l $::out_log {
    if [regexp $re $l m abk] break
  }
  if {$abk == 0} {
    tk_messageBox -message [__ "No backups configured"]
    return
  }
  run_cmd_waiting "option backupdir"
  set re {backupdir\t(.*)$}
  set bdir ""
  foreach l $::out_log {
    if [regexp $re $l m bdir] break
  }
  if {$bdir eq ""} {
    tk_messageBox -message [__ "No backup directory defined"]
    return
  }
  set bdir [file join [exec kpsewhich -var-value SELFAUTOPARENT] $bdir]
  if {! [file isdirectory $bdir]} {
    tk_messageBox -message [__ "Backup directory %s does not exist" $bdir]
    return
  }
  set pwd0 [pwd]
  cd $bdir
  set backups [lsort [glob *.tar.xz]]
  if {[llength $backups] == 0} {
    tk_messageBox -message [__ "No backups found in $bdir"]
    return
  }
  # dictionary of backups; package => list of available revisions
  set ::bks [dict create]
  set re {^(.*)\.r(\d+)\.tar\.xz$}
  foreach b $backups {
    if [regexp $re $b m pk r] {
      if {$pk in [dict keys $::bks]} {
        dict lappend ::bks $pk $r
      } else {
        dict set ::bks $pk [list $r]
      }
    }
  }
  if {[llength [dict keys $::bks]] == 0} {
    tk_messageBox -message [__ "No packages in backup directory %s" $bdir]
    return
  }
  # invert sort order of revisions for each package
  foreach pk [dict keys $::bks] {
    dict set ::bks $pk [lsort -decreasing [dict get $::bks $pk]]
  }
  toplevel .tlbk -class Dialog
  wm withdraw .tlbk
  wm transient .tlbk .
  wm title .tlbk [__ "Restore from backup"]
  if $::plain_unix {wm attributes .tlbk -type dialog}

  # wallpaper frame; see populate_main
  pack [ttk::frame .tlbk.bg] -expand 1 -fill x

  # the displayed list of backed-up packages
  pack [ttk::frame .tlbk.fbk] -in .tlbk.bg -side top
  # package names not in #0, because we want to trigger actions
  # without automatically opening a parent.
  pack [ttk::treeview .tlbk.bklist -columns {"pkg" "rev"} \
            -show {tree headings} -height 8 -selectmode browse \
            -yscrollcommand {.tlbk.bkvsb set}] -in .tlbk.fbk -side left
  pack [ttk::scrollbar .tlbk.bkvsb -orient vertical -command \
            {.tlbk.bklist yview}] -in .tlbk.fbk -side right -fill y

  .tlbk.bklist heading "pkg" -text [__ "Package"] -anchor w
  .tlbk.bklist heading "rev" -text [__ "Revision"] -anchor w

  .tlbk.bklist column "#0" -width [expr {$::cw * 2}]
  .tlbk.bklist column "pkg" -width [expr {$::cw * 25}]
  .tlbk.bklist column "rev" -width [expr {$::cw * 12}]

  # fill .tlbk.bklist. Use the last available revision.
  # Remember that $::bks is sorted and revisions inversely sorted
  # id must be unique in the entire list: rev does not qualify
  # must as well use $id for package items too
  set id 0
  dict for {pk rlist} $::bks {
    # package
    .tlbk.bklist insert {} end -id [incr id] \
        -values [list $pk [lindex $rlist 0]] -open 0
    set l [llength $rlist]
    # additional revisions
    if {$l > 1} {
      set idparent $id
      for {set i 1} {$i<$l} {incr i} {
        .tlbk.bklist insert $idparent end -id [incr id] \
            -values [list "" [lindex $rlist $i]]
      }
    }
  }

  # since we can only restore one non-last revision at a time, it is better
  # to only show one non-last revision at a time too.
  bind .tlbk.bklist <<TreeviewOpen>> {
    foreach p [.tlbk.bklist children {}] {
      if {$p ne [.tlbk.bklist focus]} {
        .tlbk.bklist item $p -open 0
      }
    }
  }
  # restoring a single package
  bind .tlbk.bklist <<RightClick>> {bklist_callback_click %x %y}
  bind .tlbk.bklist <space> restore_this

  # frame with buttons
  pack [ttk::frame .tlbk.fbut] -in .tlbk.bg -side bottom -fill x
  ppack [ttk::button .tlbk.all -text [__ "Restore all"] -command restore_all] \
        -in .tlbk.fbut -side right
  ppack [ttk::button .tlbk.done -text [__ "Close"] -command {
    end_dlg "" .tlbk}] -in .tlbk.fbut -side right

  place_dlg .tlbk .
  wm resizable .tlbk 0 0
  tkwait .tlbk
} ; # restore_backups_dialog

} ; # if $::do_restore

##### Main window and supporting procs and callbacks ##################

##### package-related #####

proc update_tlmgr {} {
  if {! $::need_update_tlmgr} {
    tk_messageBox -message [__ "Nothing to do!"]
    return
  }
  run_cmd "update --self" 1
  vwait ::done_waiting
  # tlmgr restarts itself automatically
  update_local_revnumbers
  collect_filtered
} ; # update_tlmgr

proc update_all {} {
  set updated_tlmgr 0
  if $::need_update_tlmgr {
    run_cmd "update --self" 1
    vwait ::done_waiting
    # tlmgr restarts itself automatically
    update_local_revnumbers
    set updated_tlmgr 1
  }
  # tlmgr restarts itself automatically
  #  tk_messageBox -message [__ "Update self first!"]
  #  return
  if {! $::n_updates && !$updated_tlmgr} {
    tk_messageBox -message [__ "Nothing to do!"]
    return
  } elseif $::n_updates {
    run_cmd "update --all" 1
    vwait ::done_waiting
    update_local_revnumbers
  }
  collect_filtered
} ; # update_all

### doing something with some packages

proc pkglist_from_option {opt {pk ""}} {
  if {$opt eq "marked"} {
    set pks {}
    dict for {p props} $::pkgs {
      if [dict get $props "marked"] {lappend pks $p}
    }
  } elseif {$opt eq "focus"} {
    set p [.pkglist focus]
    if {$p ne {}} {lappend pks $p}
  } elseif {$opt eq "name"} {
    lappend pks $pk
  }
  return $pks
} ; # pkglist_from_option

proc install_pkgs {sel_opt {pk ""}} {
  set pks [pkglist_from_option $sel_opt $pk]
  # check whether packages are installed
  set pre_installed {}
  set todo {}
  foreach p $pks {
    if {[dict get $::pkgs $p localrev] > 0} {
      lappend pre_installed $p
    } else {
      lappend todo $p
    }
  }
  if {[llength $todo] == 0} {
    tk_messageBox -message [__ "Nothing to do!"] -type ok -icon info
    return
  }
  run_cmd_waiting "install --dry-run $todo"
  # check whether dependencies are going to be installed
  set r {^(\S+)\s+i\s}
  set deps {}
  foreach l $::out_log {
    if {[regexp $r $l d p] && $p ni $pks} {
      lappend deps $p
    }
  }
  if {[llength $deps] > 0} {
    set ans \
        [any_message \
             [__ "Also installing dependencies\n\n%s" $deps] \
             "okcancel"]
    if {$ans eq "cancel"} return
  }
  run_cmd "install $todo" 1
  vwait ::done_waiting
  if {[llength $pre_installed] > 0} {
    lappend ::err_log [__ "Already installed: %s" $pre_installed]
    show_err_log
  }
  update_local_revnumbers
  if {$sel_opt eq "marked"} {mark_all 0}
  collect_filtered
} ; # install_pkgs

proc update_pkgs {sel_opt {pk ""}} {
  set pks [pkglist_from_option $sel_opt $pk]
  # check whether packages are installed
  set not_inst {}
  set uptodate {}
  set todo {}
  foreach p $pks {
    set lv [dict get $::pkgs $p localrev]
    if {[dict get $::pkgs $p localrev] == 0} {
      lappend not_inst $p
    } else {
      set rv [dict get $::pkgs $p remoterev]
      if {$lv >= $rv} {
        lappend uptodate $p
      } else {
        lappend todo $p
      }
    }
  }
  if {[llength $todo] == 0} {
    tk_messageBox -message [__ "Nothing to do!"] -type ok -icon info
    return
  }
  run_cmd_waiting "update --dry-run $todo"
  # check whether dependencies are going to be updated
  set r {^(\S+)\s+u\s}
  set deps {}
  foreach l $::out_log {
    if {[regexp $r $l d p] && $p ni $pks} {
      lappend deps $p
    }
  }
  if {[llength $deps] > 0} {
    set ans [any_message [__ "Also updating dependencies\n\n%s?" $deps] \
       "yesnocancel"]
    switch $ans {
      "cancel" return
      "yes" {run_cmd "update $todo" 1}
      "no" {
        set deps {}
        run_cmd_waiting "update --dry-run --no-depends $todo"
        foreach l $::out_log {
          if {[regexp $r $l u p] && $p ni $pks} {
            lappend deps $p
          }
        }
        if {[llength $deps] > 0} {
          set ans [any_message \
              [__ "Updating hard dependencies %s anyway. Continue?" $deps] \
                       "okcancel"]
          if {$ans eq "cancel"} return
        }
        run_cmd "update --no-depends $todo" 1
      }
    }
  } else {
    run_cmd "update $todo" 1
  }
  vwait ::done_waiting
  if {[llength $not_inst] > 0} {
    lappend ::err_log [__ "Skipped because not installed: %s" $not_inst]
  }
  if {[llength $uptodate] > 0} {
    lappend ::err_log [__ "Skipped because already up to date: %s" $uptodate]
  }
  if {[llength $not_inst] > 0 || [llength $uptodate] > 0} {
    show_err_log
  }
  update_local_revnumbers
  if {$sel_opt eq "marked"} {mark_all 0}
  collect_filtered
} ; # update_pkgs

proc remove_pkgs {sel_opt {pk ""}} {
  set pks [pkglist_from_option $sel_opt $pk]
  # check whether packages are installed
  set not_inst {}
  set todo {}
  foreach p $pks {
    if {[dict get $::pkgs $p localrev] > 0} {
      lappend todo $p
    } else {
      lappend not_inst $p
    }
  }
  run_cmd_waiting "remove --dry-run $todo"
  # check whether dependencies are going to be removed
  set r {^(\S+)\s+d\s}
  set deps {}
  foreach l $::out_log {
    if {[regexp $r $l d p] && $p ni $pks} {
      lappend deps $p
    }
  }
  if {[llength $todo] == 0} {
    tk_messageBox -message [__ "Nothing to do!"] -type ok -icon info
    return
  }
  if {[llength $deps] > 0} {
    set ans [any_message [__ "Also remove dependencies\n\n%s?" $deps] \
                "yesnocancel"]
    switch $ans {
      "cancel" return
      "yes" {run_cmd "remove $todo" 1}
      "no" {
        set deps {}
        run_cmd_waiting "remove --dry-run --no-depends $todo"
        foreach l $::out_log {
          if {[regexp $r $l d p] && $p ni $pks} {
            lappend deps $p
          }
        }
        if {[llength $deps] > 0} {
          set ans [any_message \
              [__ "Removing hard dependencies %s anyway. Continue?" $deps] \
                       "okcancel"]
          if {$ans eq "cancel"} return
        }
        run_cmd "remove --no-depends $todo" 1
      }
    }
  } else {
    run_cmd "remove $todo" 1
  }
  vwait ::done_waiting
 if {[llength $not_inst] > 0} {
    lappend ::err_log "Skipped because not installed: $not_inst"
    show_err_log
  }
  update_local_revnumbers
  if {$sel_opt eq "marked"} {mark_all 0}
  collect_filtered
} ; # remove_pkgs

# restoring packages is a rather different story, controlled by the
# contents of the backup directory. see further up.

##### varous callbacks #####

proc restart_self {} {
  do_debug "trying to restart"
  if {$::progname eq ""} {
    tk_messageBox -message "progname not found; not restarting"
    return
  }
  close_tlmgr
  exec $::progname &
  # on windows, it may take several seconds before
  # the old tlshell disappears.
  # oh well, windows is still windows....
  destroy .
} ; # restart_self

proc toggle_marked_pkg {itm cl} {
  # toggle_marked_pkg is triggered by a mouse click only in column #1.
  # 'marked' should get updated in ::pkgs, ::filtered and in .pkglist.

  if {$cl ne "#1"} return
  # $mrk: negation of current value of marked for $itm
  set mrk [expr {[dict get $::pkgs $itm "marked"] ? 0 : 1}]
  dict set ::pkgs $itm "marked" $mrk
  set m [mark_sym $mrk]
  dict set ::filtered $itm [lreplace [dict get $::filtered $itm] 0 0 $m]
  .pkglist set $itm mk $m
} ; # toggle_marked_pkg

proc mark_all {mrk} {
  foreach nm [dict keys $::pkgs] {
    dict set ::pkgs $nm "marked" $mrk
  }
  set m [mark_sym $mrk]
  foreach nm [dict keys $::filtered] {
    dict set ::filtered $nm [lreplace [dict get $::filtered $nm] 0 0 $m]
  }
  foreach nm [.pkglist children {}] {
    .pkglist set $nm mk $m
  }
  # alternatively: regenerate ::filtered and .pkglist from ::pkgs
} ; # mark_all

##### package popup #####

proc do_package_popup_menu {x y X Y} {
  # as focused item, the identity of the clicked item will be
  # globally available:
  .pkglist focus [.pkglist identify item $x $y]
  # recreate menu with only applicable items
  set lr [dict get $::pkgs [.pkglist focus] "localrev"]
  set rr [dict get $::pkgs [.pkglist focus] "remoterev"]
  .pkg_popup delete 0 end

  .pkg_popup add command -label [__ "Info"] -command {
    run_cmd "info [.pkglist focus]" 1; vwait ::done_waiting
  }
  if {$::have_remote && ! $::need_update_tlmgr && $rr > 0 && $lr == 0} {
    .pkg_popup add command -label [__ "Install"] -command {
      install_pkgs "focus"
    }
  }
  if {$::have_remote && ! $::need_update_tlmgr && $lr > 0 && $rr > $lr} {
    .pkg_popup add command -label [__ "Update"] -command {
      update_pkgs "focus"
    }
  }
  if {$lr > 0} {
    .pkg_popup add command -label [__ "Remove"] -command {
      remove_pkgs "focus"
    }
  }
  .pkg_popup post [expr {$X - 2}] [expr {$Y - 2}]
  focus .pkg_popup
} ; # do_package_popup_menu

proc set_paper {p} {
  run_cmd "paper paper $p" 1
}

proc set_language {l} {
  set ok 1
  if [catch {exec kpsewhich -var-value "TEXMFCONFIG"} d] {set ok 0}
  if $ok {
    set d [file join $d "tlmgr"]
    if [catch {file mkdir $d}] {set ok 0}
  }
  set fn [file join $d "config"]
  set oldlines [list]
  if {$ok && ! [catch {open $fn r} fid]} {
    set cnt 0
    while 1 {
      if [catch {chan gets $fid} ll] break
      if [chan eof $fid] break
      incr cnt
      if {! [regexp {^\s*gui-lang} $ll]} {
          lappend oldlines $ll
      }
      if {$cnt>20} break
    }
    catch {chan close $fid}
  }
  lappend oldlines "gui-lang = $l"
  if {$ok && ! [catch {open $fn w} fid]} {
    foreach ll $oldlines {
      if [catch {puts $fid $ll}] {
        set ok 0
        break
      }
    }
    catch {chan close $fid}
  }
  if $ok {
    restart_self
  } else {
    tk_messageBox -message [__ "Cannot set default GUI language"] -icon error
  }
} ; # set_language

##### running external commands #####

# For capturing an external command, we need a separate output channel,
# but we reuse ::out_log.
# stderr is bundled with stdout so ::err_log should stay empty.
proc read_capt {} {
  set l "" ; # will contain the line to be read
  if {([catch {chan gets $::capt l} len] || [chan eof $::capt])} {
    catch {chan close $::capt}
    log_widget_finish
    set ::done_waiting 1
  } elseif {$len >= 0} {
    lappend ::out_log $l
    log_widget_add $l
  }
}; # read_capt

proc run_external {cmd mess} {
  set ::out_log {}
  set ::err_log {}
  lappend ::out_log $mess
  unset -nocomplain ::done_waiting
  # dont understand why, on windows, start_tlmgr does not trigger
  # a console window but this proc does
  if [catch {open "|$cmd 2>&1" "r"} ::capt] {
    tk_messageBox -message "Failure to launch $cmd"
  }
  chan configure $::capt -buffering line -blocking 0
  chan event $::capt readable read_capt
  log_widget_init
}

proc show_help {} {
  set ::env(NOPERLDOC) 1
  long_message [exec tlmgr --help] ok
}

proc run_entry {} {
  # TODO: some validation of $cmd
  set cmd [.tlcust.e get]
  if {$cmd eq ""} return
  run_cmd $cmd 1
  end_dlg "" .tlcust
}

## arbitrary commands: no way to know what data have to be updated
#proc custom_command {} {
#  create_dlg .tlcust .
#  wm title .tlcust [__ "Custom command"]
#  pack [ttk::frame .tlcust.bg] -expand 1 -fill x
#
#  ppack [ttk::entry .tlcust.e] \
#      -in .tlcust.bg -side left -fill x -expand 1
#  ppack [ttk::button .tlcust.b -text [__ "Go"] -command run_entry] \
#      -in .tlcust.bg -side left
#  bind .tlcust.e <Return> run_entry
#  bind .tlcust <Escape> {end_dlg "" .tlcust}
#  wm .tlcust resizable 1 0
#  place_dlg .tlcust .
#}

##### main window #####

proc populate_main {} {

  wm withdraw .

  wm title . "TeX Live Shell"

  # width of '0', as a rough estimate of average character width
  set ::cw [font measure TkTextFont "0"]

  # dummy empty menu to replace the real menu .mn in disabled states.
  # the "File" cascade should ensure that the dummy menu
  # occupies the same vertical space as the real menu.
  menu .mn_empty
  .mn_empty add cascade -label [__ "File"] -menu .mn_empty.file -underline 0
  if $::plain_unix {
    .mn_empty configure -borderwidth 1
    .mn_empty configure -background $::default_bg
  menu .mn_empty.file
  }
  # real menu
  menu .mn
  . configure -menu .mn
  if $::plain_unix {
    .mn configure -borderwidth 1
    .mn configure -background $::default_bg

    # plain_unix: avoid a RenderBadPicture error on quitting.
    # 'send' changes the shutdown sequence,
    # which avoids triggering the bug.
    # 'tk appname <something>' restores 'send' and avoids the bug
    bind . <Destroy> {
      catch {tk appname appname}
    }
  }

  .mn add cascade -label [__ "File"] -menu .mn.file -underline 0
  menu .mn.file
  .mn.file add command -label [__ "Load default repository"] \
      -command {get_packages_info_remote; collect_filtered}
  .mn.file add command -command {destroy .} -label [__ "Exit"] -underline 1

  # inx: keeping count to record indices where needed,
  # i.e. when an entry needs to be referenced.
  # not all submenus need this.

  .mn add cascade -label [__ "Actions"] -menu .mn.act -underline 0
  menu .mn.act
  incr inx
  .mn.act add command -label [__ "Regenerate filename database"] -command \
      {run_external "mktexlsr" [__ "Regenerating filename database..."]}
  .mn.act add command -label [__ "Regenerate formats"] -command \
      {run_external "fmtutil-sys --all" [__ "Rebuilding formats..."]}
  .mn.act add command -label [__ "Regenerate fontmaps"] -command \
      {run_external "updmap-sys" [__ "Rebuilding fontmap files..."]}
  #.mn.act add command -label [__ "Custom command"] -command custom_command

  .mn add cascade -label [__ "Options"] -menu .mn.opt -underline 0

  menu .mn.opt
  set inx -1
  incr inx
  .mn.opt add command -label "[__ "Repositories"] ..." \
      -command repository_dialog

  incr inx
  .mn.opt add cascade -label [__ "Paper ..."] -menu .mn.opt.paper
  incr inx
  menu .mn.opt.paper
  foreach p [list A4 letter] {
    .mn.opt.paper add command -label $p -command "set_paper $p"
  }

  if {[llength $::langs] > 1} {
    incr inx
    .mn.opt add cascade -label [__ "GUI language (restarts tlshell)"] \
        -menu .mn.opt.lang
    menu .mn.opt.lang
    foreach l $::langs {
      .mn.opt.lang add command -label $l -command "set_language $l"
    }
  }

  if {$::tcl_platform(platform) ne "windows"} {
    incr inx
    set ::inx_platforms $inx
    .mn.opt add command -label "[__ "Platforms"] ..." -command platforms_select
  }

  .mn add cascade -label [__ "Help"] -menu .mn.help -underline 0
  menu .mn.help
  .mn.help add command -label [__ "About"] -command {
    tk_messageBox -message [__ "\u00a9 2017, 2018 Siep Kroonenberg

GUI interface for TeX Live Manager
Implemented in Tcl/Tk
"]}
  .mn.help add command -label [__ "tlmgr help"] -command show_help

  # wallpaper frame
  # it is possible to set a background color for a toplevel, but on
  # MacOS I did not find a way to determine the right $::default_bg
  # color. Instead, all toplevels are given a wallpaper ttk::frame
  # with the default ttk::frame color, which seems to work
  # everywhere.
  pack [ttk::frame .bg] -expand 1 -fill both
  .bg configure -padding 5

  # bottom of main window
  pack [ttk::frame .endbuttons] -in .bg -side bottom -fill x
  ttk::label .busy -textvariable ::busy -font TkHeadingFont -anchor w
  ppack .busy -in .endbuttons -side left
  ppack [ttk::button .q -text [__ Quit] -command {destroy .}] \
      -in .endbuttons -side right
  ppack [ttk::button .r -text [__ "Restart self"] -command restart_self] \
      -in .endbuttons -side right
  ppack [ttk::button .t -text [__ "Restart tlmgr"] \
             -command {close_tlmgr; start_tlmgr}] \
      -in .endbuttons -side right
  ttk::button .showlogs -text [__ "Show logs"] -command show_logs
  ppack .showlogs -in .endbuttons -side right

  # various info
  # frame .topf -background white -borderwidth 2 -relief sunken
  ppack [ttk::frame .topf] -in .bg -side top -anchor w -fill x
  pack [ttk::separator .sp -orient horizontal] \
      -in .bg -side top -fill x -pady 6

  ttk::label .topf.llrepo -text [__ "Default repositories"] -anchor w
  pgrid .topf.llrepo -row 0 -column 0 -sticky nw
  ttk::label .topf.lrepos -text "" -justify left -anchor w
  pgrid .topf.lrepos -row 0 -column 1 -sticky nw
  ttk::label .topf.loaded -text [__ "Not loaded"] -foreground red -anchor w
  pgrid .topf.loaded -row 1 -column 1 -sticky w

  ttk::label .topf.lluptodate -text [__ "TL Manager up to date?"] -anchor w
  pgrid .topf.lluptodate -row 2 -column 0 -sticky w
  ttk::label .topf.luptodate -text [__ "Unknown"] -anchor w
  pgrid .topf.luptodate -row 2 -column 1 -sticky w

  ttk::label .topf.llcmd -anchor w -text [__ "Last tlmgr command:"] -anchor w
  pgrid .topf.llcmd -row 3 -column 0 -sticky w
  ttk::label .topf.lcmd -anchor w -textvariable ::last_cmd -anchor w
  pgrid .topf.lcmd -row 3 -column 1 -sticky w

  # package list
  ttk::label .lpack -text [__ "Package list"] -font TkHeadingFont -anchor w
  pack .lpack -in .bg -side top -padx 3 -pady [list 15 3] -fill x

  # controlling package list
  ttk::frame .pkfilter
  pack .pkfilter -in .bg -side top -fill x
  grid columnconfigure .pkfilter 3 -weight 1
  # column #3 is empty, but that is allright
  # filter on status: inst, all, upd
  ttk::label .pkfilter.lstat -font TkHeadingFont -text [__ "Status"]
  ttk::radiobutton .pkfilter.inst -text [__ "Installed"] -value inst \
      -variable ::stat_opt -command collect_filtered
  ttk::radiobutton .pkfilter.alls -text [__ "All"] -value all \
      -variable ::stat_opt -command collect_filtered
  ttk::radiobutton .pkfilter.upd -text [__ "Updatable"] -value upd \
      -variable ::stat_opt -command collect_filtered
  grid .pkfilter.lstat -column 0 -row 0 -sticky w -padx {3 50}
  pgrid .pkfilter.inst -column 0 -row 1 -sticky w
  pgrid .pkfilter.alls -column 0 -row 2 -sticky w
  pgrid .pkfilter.upd -column 0 -row 3 -sticky w

  # filter on detail level: all, coll, schm
  ttk::label .pkfilter.ldtl -font TkHeadingFont -text [__ "Detail >> Global"]
  ttk::radiobutton .pkfilter.alld -text [__ All] -value all \
      -variable ::dtl_opt -command collect_filtered
  ttk::radiobutton .pkfilter.coll -text [__ "Collections and schemes"] \
      -value coll -variable ::dtl_opt -command collect_filtered
  ttk::radiobutton .pkfilter.schm -text [__ "Only schemes"] -value schm \
      -variable ::dtl_opt -command collect_filtered
  pgrid .pkfilter.ldtl -column 1 -row 0 -sticky w
  pgrid .pkfilter.alld -column 1 -row 1 -sticky w
  pgrid .pkfilter.coll -column 1 -row 2 -sticky w
  pgrid .pkfilter.schm -column 1 -row 3 -sticky w

  # marks
  grid [ttk::button .mrk_all -text [__ "Mark all"] -command {mark_all 1}] \
      -in .pkfilter -column 2 -row 1 -sticky w -padx {50 3} -pady 3
  grid [ttk::button .mrk_none -text [__ "Mark none"] -command {mark_all 0}] \
      -in .pkfilter -column 2 -row 2 -sticky w -padx {50 3} -pady 3

  # actions
  set rw -1
  incr rw
  ttk::button .mrk_inst -text [__ "Install marked"] -command {
      install_pkgs "marked"}
  pgrid .mrk_inst -in .pkfilter -column 4 -row $rw -sticky ew
  incr rw
  ttk::button .mrk_upd -text [__ "Update marked"] -command {
    update_pkgs "marked"}
  pgrid .mrk_upd -in .pkfilter -column 4 -row $rw -sticky ew
  incr rw
  ttk::button .mrk_rem -text [__ "Remove marked"] -command {
    remove_pkgs "marked"}
  pgrid .mrk_rem -in .pkfilter -column 4 -row $rw -sticky ew
  if $::do_restore {
    incr rw
    ttk::button .mrk_rest -text "[__ "Restore from backup"] ..." -command \
        restore_backups_dialog
    pgrid .mrk_rest -in .pkfilter -column 4 -row $rw -sticky ew
  }
  incr rw
  ttk::button .upd_tlmgr -text [__ "Update tlmgr"] -command update_tlmgr
  pgrid .upd_tlmgr -in .pkfilter -column 4 -row $rw -sticky ew
  incr rw
  ttk::button .upd_all -text [__ "Update all"] -command update_all
  pgrid .upd_all -in .pkfilter -column 4 -row $rw -sticky ew

  # search interface; no new row
  grid [ttk::frame .pksearch] -in .pkfilter -row $rw \
      -column 0 -columnspan 4 -sticky w
  ppack [ttk::label .pksearch.l \
             -text [__ "Search"]] -side left
  pack [ttk::entry .pksearch.e -width 30] -side left -padx {3 0} -pady 3
  ppack [ttk::radiobutton .pksearch.n -variable ::search_desc \
            -value 0 -text [__ "By name"]] -side left
  ppack [ttk::radiobutton .pksearch.d -variable ::search_desc \
             -value 1 -text [__ "By name and description"]] -side left
  bind .pksearch.e <KeyRelease> display_packages_info
  bind .pksearch.n <ButtonRelease> {set ::search_desc 0; display_packages_info}
  bind .pksearch.d <ButtonRelease> {set ::search_desc 1; display_packages_info}

  # packages list itself
  pack [ttk::frame .fpkg] -in .bg -side top -fill both -expand 1
  ttk::treeview .pkglist -columns \
      {mk name localrev remoterev shortdesc} \
      -show headings -height 8 -selectmode extended \
      -yscrollcommand {.pkvsb set}
  .pkglist heading mk -text "" -anchor w
  .pkglist heading name -text [__ "Name"] -anchor w
  .pkglist heading localrev -text [__ "Local rev. (ver.)"] -anchor w
  .pkglist heading remoterev -text [__ "Remote rev. (ver.)"] -anchor w
  .pkglist heading shortdesc -text [__ "Description"] -anchor w
  .pkglist column mk -width [expr {$::cw * 3}] -stretch 0
  .pkglist column name -width [expr {$::cw * 25}] -stretch 1
  .pkglist column localrev -width [expr {$::cw * 18}] -stretch 0
  .pkglist column remoterev -width [expr {$::cw * 18}] -stretch 0
  .pkglist column shortdesc -width [expr {$::cw * 50}] -stretch 1

  ttk::scrollbar .pkvsb -orient vertical -command {.pkglist yview}
  ppack .pkglist -in .fpkg -side left -expand 1 -fill both
  ppack .pkvsb -in .fpkg -side left -fill y

  # "#1" refers to the first column (with mark symbols)
  bind .pkglist <space> {toggle_marked_pkg [.pkglist focus] "#1"}
  bind .pkglist <Return> {toggle_marked_pkg [.pkglist focus] "#1"}
  # only toggle when column is "mk" i.e. #1
  bind .pkglist <ButtonRelease-1> {toggle_marked_pkg [
      .pkglist identify item %x %y] [.pkglist identify column %x %y]}

  menu .pkg_popup ; # entries added on-the-fly
  bind .pkglist <<RightClick>> {do_package_popup_menu %x %y %X %Y}
  if $::plain_unix {
    bind .pkg_popup <Leave> {.pkg_popup unpost}
  }

  wm protocol . WM_DELETE_WINDOW {.q invoke}
  wm resizable . 1 1
  wm state . normal
}

##### initialize ######################################################

proc initialize {} {
  # seed random numbers
  expr {srand([clock seconds])}

  # directory for temp files
  set attemptdirs {}
  foreach tmp {TMPDIR TEMP TMP} {
    if {$tmp in [array names ::env]} {
      lappend attemptdirs $::env($tmp)
    }
  }
  if {$::tcl_platform(platform) eq "unix"} {
    lappend attemptdirs "/tmp"
  }
  lappend attemptdirs [pwd]
  set ::tempsub ""
  foreach tmp $attemptdirs {
    if {$::tcl_platform(platform) eq "windows"} {
      regsub -all {\\} $tmp {/} tmp
    }
    if {[file isdirectory $tmp]} {
      # no real point in randomizing directory name itself
      if {$::tcl_platform(platform) eq "unix"} {
        set ::tempsub [file join $tmp $::env(USER)]
      } else {
        set ::tempsub [file join $tmp $::env(USERNAME)]
      }
      append ::tempsub "-tlshell"
      if {! [catch {file mkdir $::tempsub}]} {break} ;# success
    }
  }

  if {$::tempsub eq "" || [file isdirectory $::tempsub] == 0} {
    error "Cannot create directory for temporary files"
  }
  # temp file for stderr
  set ::err_file [maketemp ".err_tlshl"]

  # logfile
  if $::ddebug {
    set fname [file join $::tempsub \
      [clock format [clock seconds] -format {%H:%M}]]
    set ::flid [open $fname w]
  }

  # languages
  set ::langs [list "en"]
  foreach l [glob -nocomplain -directory \
                 [file join $::instroot "tlpkg" "translations"] *.po] {
    lappend ::langs [string range [file tail $l] 0 end-3]
  }

  # in case we are going to do something with json:
  # add json subdirectory to auto_path, but at low priority
  # since the tcl/tk installation may already have a better implementation.
  # Trust kpsewhich to find out own directory and bypass symlinks.
  #set tlsdir [file dirname [exec kpsewhich -format texmfscripts tlshell.tcl]]
  #lappend ::auto_path [file join $tlsdir "json"]

  populate_main

  start_tlmgr
  get_repos_from_tlmgr
  .topf.lrepos configure -text [print_repos]
  get_packages_info_local
  collect_filtered ; # invokes display_packages_info
  selective_dis_enable
}; # initialize

initialize