summaryrefslogtreecommitdiffstats
path: root/Doc/texi2html.py
blob: 22aa1fb834a70ce0a17e38fa78b5f04066cdc0c8 (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
#! /usr/local/bin/python

# Convert GNU texinfo files into HTML, one file per node.
# Based on Texinfo 2.14.
# Usage: texi2html [-d] [-d] [-c] inputfile outputdirectory
# The input file must be a complete texinfo file, e.g. emacs.texi.
# This creates many files (one per info node) in the output directory,
# overwriting existing files of the same name.  All files created have
# ".html" as their extension.


# XXX To do:
# - handle @comment*** correctly
# - handle @xref {some words} correctly
# - handle @ftable correctly (items aren't indexed?)
# - handle @itemx properly
# - handle @exdent properly
# - add links directly to the proper line from indices
# - check against the definitive list of @-cmds; we still miss (among others):
# - @defindex (hard)
# - @c(omment) in the middle of a line (rarely used)
# - @this* (not really needed, only used in headers anyway)
# - @today{} (ever used outside title page?)

# More consistent handling of chapters/sections/etc.
# Lots of documentation
# Many more options:
#	-top	designate top node
#	-links	customize which types of links are included
#	-split  split at chapters or sections instead of nodes
#	-name	Allow different types of filename handling. Non unix systems
#		will have problems with long node names
#	...
# Support the most recent texinfo version and take a good look at HTML 3.0
# More debugging output (customizable) and more fexible error handling
# How about icons ?

import os
import regex
import regsub
import string

MAGIC = '\\input texinfo'

cmprog = regex.compile('^@\([a-z]+\)\([ \t]\|$\)') # Command (line-oriented)
blprog = regex.compile('^[ \t]*$') # Blank line
kwprog = regex.compile('@[a-z]+') # Keyword (embedded, usually with {} args)
spprog = regex.compile('[\n@{}&<>]') # Special characters in running text
miprog = regex.compile( \
	'^\* \([^:]*\):\(:\|[ \t]*\([^\t,\n.]+\)\([^ \t\n]*\)\)[ \t\n]*')
					# menu item (Yuck!)


class HTMLNode:
    """Some of the parser's functionality is separated into this class.

    A Node accumulates its contents, takes care of links to other Nodes
    and saves itself when it is finished and all links are resolved.
    """

    DOCTYPE = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">'

    type = 0
    cont = ''
    epilogue = '</BODY></HTML>\n'

    def __init__(self, dir, name, topname, title, next, prev, up):
	self.dirname = dir
	self.name = name
	if topname:
	    self.topname = topname
	else:
	    self.topname = name
	self.title = title
	self.next = next
	self.prev = prev
	self.up = up
	self.lines = []

    def write(self, *lines):
	map(self.lines.append, lines)

    def flush(self):
	fp = open(self.dirname + '/' + makefile(self.name), 'w')
	fp.write(self.prologue)
	fp.write(self.text)
	fp.write(self.epilogue)
	fp.close()

    def link(self, label, nodename, rel=None, rev=None):
	if nodename:
	    if string.lower(nodename) == '(dir)':
		addr = '../dir.html'
		title = ''
	    else:
		addr = makefile(nodename)
		title = ' TITLE="%s"' % nodename
	    self.write(label, ': <A HREF="', addr, '"', \
		       rel and (' REL=' + rel) or "", \
		       rev and (' REV=' + rev) or "", \
		       title, '>', nodename, '</A>  \n')

    def finalize(self):
	length = len(self.lines)
	self.text = string.joinfields(self.lines, '')
	self.lines = []
	self.open_links()
	self.output_links()
	self.close_links()
	links = string.joinfields(self.lines, '')
	self.lines = []

	self.prologue = (
	    self.DOCTYPE +
	    '\n<HTML><HEAD>\n'
	    '  <!-- Converted with texi2html and Python -->\n'
	    '  <TITLE>' + self.title + '</TITLE>\n'
	    '  <LINK REL=Next HREF="'
		+ makefile(self.next) + '" TITLE="' + self.next + '">\n'
	    '  <LINK REL=Previous HREF="'
		+ makefile(self.prev) + '" TITLE="' + self.prev  + '">\n'
	    '  <LINK REL=Up HREF="'
		+ makefile(self.up) + '" TITLE="' + self.up  + '">\n'
	    '</HEAD><BODY>\n' +
	    links)
	if length > 20:
	    self.epilogue = '<P>\n%s</BODY></HTML>\n' % links

    def open_links(self):
	self.write('<HR>\n')

    def close_links(self):
	self.write('<HR>\n')

    def output_links(self):
	if self.cont != self.next:
	    self.link('  Cont', self.cont)
	self.link('  Next', self.next, rel='Next')
	self.link('  Prev', self.prev, rel='Previous')
	self.link('  Up', self.up, rel='Up')
	if self.name <> self.topname:
	    self.link('  Top', self.topname)


class HTML3Node(HTMLNode):

    DOCTYPE = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML Level 3//EN//3.0">'

    def open_links(self):
	self.write('<DIV CLASS=Navigation>\n <HR>\n')

    def close_links(self):
	self.write(' <HR>\n</DIV>\n')


class TexinfoParser:

    COPYRIGHT_SYMBOL = "&copy;"
    FN_ID_PATTERN = "(%(id)s)"
    FN_SOURCE_PATTERN = '<A NAME=footnoteref%(id)s' \
			' HREF="#footnotetext%(id)s">' \
			+ FN_ID_PATTERN + '</A>'
    FN_TARGET_PATTERN = '<A NAME=footnotetext%(id)s' \
			' HREF="#footnoteref%(id)s">' \
			+ FN_ID_PATTERN + '</A>\n%(text)s<P>\n'
    FN_HEADER = '\n<P>\n<HR NOSHADE SIZE=1 WIDTH=200>\n' \
		'<STRONG><EM>Footnotes</EM></STRONG>\n<P>'


    Node = HTMLNode

    # Initialize an instance
    def __init__(self):
	self.unknown = {}	# statistics about unknown @-commands
	self.filenames = {}	# Check for identical filenames
	self.debugging = 0	# larger values produce more output
	self.print_headers = 0	# always print headers?
	self.nodefp = None	# open file we're writing to
	self.nodelineno = 0	# Linenumber relative to node
	self.links = None	# Links from current node
	self.savetext = None	# If not None, save text head instead
	self.savestack = []	# If not None, save text head instead
	self.dirname = 'tmp'	# directory where files are created
	self.includedir = '.'	# directory to search @include files
	self.nodename = ''	# name of current node
	self.topname = ''	# name of top node (first node seen)
	self.title = ''		# title of this whole Texinfo tree
	self.resetindex()	# Reset all indices
	self.contents = []	# Reset table of contents
	self.numbering = []	# Reset section numbering counters
	self.nofill = 0		# Normal operation: fill paragraphs
	self.values={'html': 1} # Names that should be parsed in ifset
	self.stackinfo={}	# Keep track of state in the stack
	# XXX The following should be reset per node?!
	self.footnotes = []	# Reset list of footnotes
	self.itemarg = None	# Reset command used by @item
	self.itemnumber = None	# Reset number for @item in @enumerate
	self.itemindex = None	# Reset item index name
	self.node = None
	self.nodestack = []
	self.cont = 0
	self.includedepth = 0
    # Set (output) directory name
    def setdirname(self, dirname):
	self.dirname = dirname

    # Set include directory name
    def setincludedir(self, includedir):
	self.includedir = includedir

    # Parse the contents of an entire file
    def parse(self, fp):
	line = fp.readline()
	lineno = 1
	while line and (line[0] == '%' or blprog.match(line) >= 0):
	    line = fp.readline()
	    lineno = lineno + 1
	if line[:len(MAGIC)] <> MAGIC:
	    raise SyntaxError, 'file does not begin with '+`MAGIC`
	self.parserest(fp, lineno)

    # Parse the contents of a file, not expecting a MAGIC header
    def parserest(self, fp, initial_lineno):
	lineno = initial_lineno
	self.done = 0
	self.skip = 0
	self.stack = []
	accu = []
	while not self.done:
	    line = fp.readline()
	    self.nodelineno = self.nodelineno + 1
	    if not line:
		if accu:
		    if not self.skip: self.process(accu)
		    accu = []
		if initial_lineno > 0:
		    print '*** EOF before @bye'
		break
	    lineno = lineno + 1
	    if cmprog.match(line) >= 0:
		a, b = cmprog.regs[1]
		cmd = line[a:b]
		if cmd in ('noindent', 'refill'):
		    accu.append(line)
		else:
		    if accu:
			if not self.skip:
			    self.process(accu)
			accu = []
		    self.command(line)
	    elif blprog.match(line) >= 0 and \
		 'format' not in self.stack and \
		 'example' not in self.stack:
		if accu:
		    if not self.skip:
			self.process(accu)
			if self.nofill:
			    self.write('\n')
			else:
			    self.write('<P>\n')
			accu = []
	    else:
		# Append the line including trailing \n!
		accu.append(line)
	#
	if self.skip:
	    print '*** Still skipping at the end'
	if self.stack:
	    print '*** Stack not empty at the end'
	    print '***', self.stack
	if self.includedepth == 0:
	    while self.nodestack:
		self.nodestack[-1].finalize()
		self.nodestack[-1].flush()
		del self.nodestack[-1]

    # Start saving text in a buffer instead of writing it to a file
    def startsaving(self):
	if self.savetext <> None:
	    self.savestack.append(self.savetext)
	    # print '*** Recursively saving text, expect trouble'
	self.savetext = ''

    # Return the text saved so far and start writing to file again
    def collectsavings(self):
	savetext = self.savetext
	if len(self.savestack) > 0:
	    self.savetext = self.savestack[-1]
	    del self.savestack[-1]
	else:
	    self.savetext = None
	return savetext or ''

    # Write text to file, or save it in a buffer, or ignore it
    def write(self, *args):
	try:
	    text = string.joinfields(args, '')
	except:
	    print args
	    raise TypeError
	if self.savetext <> None:
	    self.savetext = self.savetext + text
	elif self.nodefp:
	    self.nodefp.write(text)
	elif self.node:
	    self.node.write(text)
    # Complete the current node -- write footnotes and close file
    def endnode(self):
	if self.savetext <> None:
	    print '*** Still saving text at end of node'
	    dummy = self.collectsavings()
	if self.footnotes:
	    self.writefootnotes()
	if self.nodefp:
	    if self.nodelineno > 20:
		self.write('<HR>\n')
		[name, next, prev, up] = self.nodelinks[:4]
		self.link('Next', next)
		self.link('Prev', prev)
		self.link('Up', up)
		if self.nodename <> self.topname:
		    self.link('Top', self.topname)
		self.write('<HR>\n')
	    self.write('</BODY>\n')
	    self.nodefp.close()
	    self.nodefp = None
	elif self.node:
	    if not self.cont and \
	       (not self.node.type or \
		(self.node.next and self.node.prev and self.node.up)):
		self.node.finalize()
		self.node.flush()
	    else:
		self.nodestack.append(self.node)
	    self.node = None
	self.nodename = ''

    # Process a list of lines, expanding embedded @-commands
    # This mostly distinguishes between menus and normal text
    def process(self, accu):
	if self.debugging > 1:
	    print self.skip, self.stack,
	    if accu: print accu[0][:30],
	    if accu[0][30:] or accu[1:]: print '...',
	    print
	if self.stack and self.stack[-1] == 'menu':
	    # XXX should be done differently
	    for line in accu:
		if miprog.match(line) < 0:
		    line = string.strip(line) + '\n'
		    self.expand(line)
		    continue
		(bgn, end), (a, b), (c, d), (e, f), (g, h) = \
			miprog.regs[:5]
		label = line[a:b]
		nodename = line[c:d]
		if nodename[0] == ':': nodename = label
		else: nodename = line[e:f]
		punct = line[g:h]
		self.write('  <LI><A HREF="',
			   makefile(nodename),
			   '">', nodename,
			   '</A>', punct, '\n')
		self.expand(line[end:])
	else:
	    text = string.joinfields(accu, '')
	    self.expand(text)

    # Write a string, expanding embedded @-commands
    def expand(self, text):
	stack = []
	i = 0
	n = len(text)
	while i < n:
	    start = i
	    i = spprog.search(text, i)
	    if i < 0:
		self.write(text[start:])
		break
	    self.write(text[start:i])
	    c = text[i]
	    i = i+1
	    if c == '\n':
		self.write('\n')
		continue
	    if c == '<':
		self.write('&lt;')
		continue
	    if c == '>':
		self.write('&gt;')
		continue
	    if c == '&':
		self.write('&amp;')
		continue
	    if c == '{':
		stack.append('')
		continue
	    if c == '}':
		if not stack:
		    print '*** Unmatched }'
		    self.write('}')
		    continue
		cmd = stack[-1]
		del stack[-1]
		try:
		    method = getattr(self, 'close_' + cmd)
		except AttributeError:
		    self.unknown_close(cmd)
		    continue
		method()
		continue
	    if c <> '@':
		# Cannot happen unless spprog is changed
		raise RuntimeError, 'unexpected funny '+`c`
	    start = i
	    while i < n and text[i] in string.letters: i = i+1
	    if i == start:
		# @ plus non-letter: literal next character
		i = i+1
		c = text[start:i]
		if c == ':':
		    # `@:' means no extra space after
		    # preceding `.', `?', `!' or `:'
		    pass
		else:
		    # `@.' means a sentence-ending period;
		    # `@@', `@{', `@}' quote `@', `{', `}'
		    self.write(c)
		continue
	    cmd = text[start:i]
	    if i < n and text[i] == '{':
		i = i+1
		stack.append(cmd)
		try:
		    method = getattr(self, 'open_' + cmd)
		except AttributeError:
		    self.unknown_open(cmd)
		    continue
		method()
		continue
	    try:
		method = getattr(self, 'handle_' + cmd)
	    except AttributeError:
		self.unknown_handle(cmd)
		continue
	    method()
	if stack:
	    print '*** Stack not empty at para:', stack

    # --- Handle unknown embedded @-commands ---

    def unknown_open(self, cmd):
	print '*** No open func for @' + cmd + '{...}'
	cmd = cmd + '{'
	self.write('@', cmd)
	if not self.unknown.has_key(cmd):
	    self.unknown[cmd] = 1
	else:
	    self.unknown[cmd] = self.unknown[cmd] + 1

    def unknown_close(self, cmd):
	print '*** No close func for @' + cmd + '{...}'
	cmd = '}' + cmd
	self.write('}')
	if not self.unknown.has_key(cmd):
	    self.unknown[cmd] = 1
	else:
	    self.unknown[cmd] = self.unknown[cmd] + 1

    def unknown_handle(self, cmd):
	print '*** No handler for @' + cmd
	self.write('@', cmd)
	if not self.unknown.has_key(cmd):
	    self.unknown[cmd] = 1
	else:
	    self.unknown[cmd] = self.unknown[cmd] + 1

    # XXX The following sections should be ordered as the texinfo docs

    # --- Embedded @-commands without {} argument list --

    def handle_noindent(self): pass

    def handle_refill(self): pass

    # --- Include file handling ---

    def do_include(self, args):
	file = args
	file = os.path.join(self.includedir, file)
	try:
	    fp = open(file, 'r')
	except IOError, msg:
	    print '*** Can\'t open include file', `file`
	    return
	if self.debugging:
	    print '--> file', `file`
	save_done = self.done
	save_skip = self.skip
	save_stack = self.stack
	self.includedepth = self.includedepth + 1
	self.parserest(fp, 0)
	self.includedepth = self.includedepth - 1
	fp.close()
	self.done = save_done
	self.skip = save_skip
	self.stack = save_stack
	if self.debugging:
	    print '<-- file', `file`

    # --- Special Insertions ---

    def open_dmn(self): pass
    def close_dmn(self): pass

    def open_dots(self): self.write('...')
    def close_dots(self): pass

    def open_bullet(self): pass
    def close_bullet(self): pass

    def open_TeX(self): self.write('TeX')
    def close_TeX(self): pass

    def handle_copyright(self): self.write(self.COPYRIGHT_SYMBOL)
    def open_copyright(self): self.write(self.COPYRIGHT_SYMBOL)
    def close_copyright(self): pass

    def open_minus(self): self.write('-')
    def close_minus(self): pass

    # --- Special Glyphs for Examples ---

    def open_result(self): self.write('=&gt;')
    def close_result(self): pass

    def open_expansion(self): self.write('==&gt;')
    def close_expansion(self): pass

    def open_print(self): self.write('-|')
    def close_print(self): pass

    def open_error(self): self.write('error--&gt;')
    def close_error(self): pass

    def open_equiv(self): self.write('==')
    def close_equiv(self): pass

    def open_point(self): self.write('-!-')
    def close_point(self): pass

    # --- Cross References ---

    def open_pxref(self):
	self.write('see ')
	self.startsaving()
    def close_pxref(self):
	self.makeref()

    def open_xref(self):
	self.write('See ')
	self.startsaving()
    def close_xref(self):
	self.makeref()

    def open_ref(self):
	self.startsaving()
    def close_ref(self):
	self.makeref()

    def open_inforef(self):
	self.write('See info file ')
	self.startsaving()
    def close_inforef(self):
	text = self.collectsavings()
	args = string.splitfields(text, ',')
	n = len(args)
	for i in range(n):
	    args[i] = string.strip(args[i])
	while len(args) < 3: args.append('')
	node = args[0]
	file = args[2]
	self.write('`', file, '\', node `', node, '\'')

    def makeref(self):
	text = self.collectsavings()
	args = string.splitfields(text, ',')
	n = len(args)
	for i in range(n):
	    args[i] = string.strip(args[i])
	while len(args) < 5: args.append('')
	nodename = label = args[0]
	if args[2]: label = args[2]
	file = args[3]
	title = args[4]
	href = makefile(nodename)
	if file:
	    href = '../' + file + '/' + href
	self.write('<A HREF="', href, '">', label, '</A>')

    # --- Marking Words and Phrases ---

    # --- Other @xxx{...} commands ---

    def open_(self): pass # Used by {text enclosed in braces}
    def close_(self): pass

    open_asis = open_
    close_asis = close_

    def open_cite(self): self.write('<CITE>')
    def close_cite(self): self.write('</CITE>')

    def open_code(self): self.write('<CODE>')
    def close_code(self): self.write('</CODE>')

    def open_t(self): self.write('<TT>')
    def close_t(self): self.write('</TT>')

    def open_dfn(self): self.write('<DFN>')
    def close_dfn(self): self.write('</DFN>')

    def open_emph(self): self.write('<EM>')
    def close_emph(self): self.write('</EM>')

    def open_i(self): self.write('<I>')
    def close_i(self): self.write('</I>')

    def open_footnote(self):
	# if self.savetext <> None:
	# 	print '*** Recursive footnote -- expect weirdness'
	id = len(self.footnotes) + 1
	self.write(self.FN_SOURCE_PATTERN % {'id': `id`})
	self.startsaving()

    def close_footnote(self):
	id = len(self.footnotes) + 1
	self.footnotes.append(id, self.collectsavings())

    def writefootnotes(self):
	self.write(self.FN_HEADER)
	for id, text in self.footnotes:
	    self.write(self.FN_TARGET_PATTERN
		       % {'id': `id`, 'text': text})
	self.footnotes = []

    def open_file(self): self.write('<CODE>')
    def close_file(self): self.write('</CODE>')

    def open_kbd(self): self.write('<KBD>')
    def close_kbd(self): self.write('</KBD>')

    def open_key(self): self.write('<KEY>')
    def close_key(self): self.write('</KEY>')

    def open_r(self): self.write('<R>')
    def close_r(self): self.write('</R>')

    def open_samp(self): self.write('`<SAMP>')
    def close_samp(self): self.write('</SAMP>\'')

    def open_sc(self): self.write('<SMALLCAPS>')
    def close_sc(self): self.write('</SMALLCAPS>')

    def open_strong(self): self.write('<STRONG>')
    def close_strong(self): self.write('</STRONG>')

    def open_b(self): self.write('<B>')
    def close_b(self): self.write('</B>')

    def open_var(self): self.write('<VAR>')
    def close_var(self): self.write('</VAR>')

    def open_w(self): self.write('<NOBREAK>')
    def close_w(self): self.write('</NOBREAK>')

    open_titlefont = open_
    close_titlefont = close_

    def open_small(self): pass
    def close_small(self): pass

    def command(self, line):
	a, b = cmprog.regs[1]
	cmd = line[a:b]
	args = string.strip(line[b:])
	if self.debugging > 1:
	    print self.skip, self.stack, '@' + cmd, args
	try:
	    func = getattr(self, 'do_' + cmd)
	except AttributeError:
	    try:
		func = getattr(self, 'bgn_' + cmd)
	    except AttributeError:
		# don't complain if we are skipping anyway
		if not self.skip:
		    self.unknown_cmd(cmd, args)
		return
	    self.stack.append(cmd)
	    func(args)
	    return
	if not self.skip or cmd == 'end':
	    func(args)

    def unknown_cmd(self, cmd, args):
	print '*** unknown', '@' + cmd, args
	if not self.unknown.has_key(cmd):
	    self.unknown[cmd] = 1
	else:
	    self.unknown[cmd] = self.unknown[cmd] + 1

    def do_end(self, args):
	words = string.split(args)
	if not words:
	    print '*** @end w/o args'
	else:
	    cmd = words[0]
	    if not self.stack or self.stack[-1] <> cmd:
		print '*** @end', cmd, 'unexpected'
	    else:
		del self.stack[-1]
	    try:
		func = getattr(self, 'end_' + cmd)
	    except AttributeError:
		self.unknown_end(cmd)
		return
	    func()

    def unknown_end(self, cmd):
	cmd = 'end ' + cmd
	print '*** unknown', '@' + cmd
	if not self.unknown.has_key(cmd):
	    self.unknown[cmd] = 1
	else:
	    self.unknown[cmd] = self.unknown[cmd] + 1

    # --- Comments ---

    def do_comment(self, args): pass
    do_c = do_comment

    # --- Conditional processing ---

    def bgn_ifinfo(self, args): pass
    def end_ifinfo(self): pass

    def bgn_iftex(self, args): self.skip = self.skip + 1
    def end_iftex(self): self.skip = self.skip - 1

    def bgn_ignore(self, args): self.skip = self.skip + 1
    def end_ignore(self): self.skip = self.skip - 1

    def bgn_tex(self, args): self.skip = self.skip + 1
    def end_tex(self): self.skip = self.skip - 1

    def do_set(self, args):
	fields = string.splitfields(args, ' ')
	key = fields[0]
	if len(fields) == 1:
	    value = 1
	else:
	    value = string.joinfields(fields[1:], ' ')
	self.values[key] = value
	print self.values

    def do_clear(self, args):
	self.values[args] = None

    def bgn_ifset(self, args):
	if args not in self.values.keys() \
	   or self.values[args] is None:
	    self.skip = self.skip + 1
	    self.stackinfo[len(self.stack)] = 1
	else:
	    self.stackinfo[len(self.stack)] = 0
    def end_ifset(self):
	print self.stack
	print self.stackinfo
	if self.stackinfo[len(self.stack) + 1]:
	    self.skip = self.skip - 1
	del self.stackinfo[len(self.stack) + 1]

    def bgn_ifclear(self, args):
	if args in self.values.keys() \
	   and self.values[args] is not None:
	    self.skip = self.skip + 1
	    self.stackinfo[len(self.stack)] = 1
	else:
	    self.stackinfo[len(self.stack)] = 0

    end_ifclear = end_ifset

    def open_value(self):
	self.startsaving()

    def close_value(self):
	key = self.collectsavings()
	if key in self.values.keys():
	    self.write(self.values[key])
	else:
	    print '*** Undefined value: ', key

    # --- Beginning a file ---

    do_finalout = do_comment
    do_setchapternewpage = do_comment
    do_setfilename = do_comment

    def do_settitle(self, args):
	print args
	self.startsaving()
	self.expand(args)
	self.title = self.collectsavings()
	print self.title
    def do_parskip(self, args): pass

    # --- Ending a file ---

    def do_bye(self, args):
	self.endnode()
	self.done = 1

    # --- Title page ---

    def bgn_titlepage(self, args): self.skip = self.skip + 1
    def end_titlepage(self): self.skip = self.skip - 1
    def do_shorttitlepage(self, args): pass

    def do_center(self, args):
	# Actually not used outside title page...
	self.write('<H1>')
	self.expand(args)
	self.write('</H1>\n')
    do_title = do_center
    do_subtitle = do_center
    do_author = do_center

    do_vskip = do_comment
    do_vfill = do_comment
    do_smallbook = do_comment

    do_paragraphindent = do_comment
    do_setchapternewpage = do_comment
    do_headings = do_comment
    do_footnotestyle = do_comment

    do_evenheading = do_comment
    do_evenfooting = do_comment
    do_oddheading = do_comment
    do_oddfooting = do_comment
    do_everyheading = do_comment
    do_everyfooting = do_comment

    # --- Nodes ---

    def do_node(self, args):
	self.endnode()
	self.nodelineno = 0
	parts = string.splitfields(args, ',')
	while len(parts) < 4: parts.append('')
	for i in range(4): parts[i] = string.strip(parts[i])
	self.nodelinks = parts
	[name, next, prev, up] = parts[:4]
	file = self.dirname + '/' + makefile(name)
	if self.filenames.has_key(file):
	    print '*** Filename already in use: ', file
	else:
	    if self.debugging: print '--- writing', file
	self.filenames[file] = 1
	# self.nodefp = open(file, 'w')
	self.nodename = name
	if self.cont and self.nodestack:
	    self.nodestack[-1].cont = self.nodename
	if not self.topname: self.topname = name
	title = name
	if self.title: title = title + ' -- ' + self.title
	self.node = self.Node(self.dirname, self.nodename, self.topname,
			      title, next, prev, up)

    def link(self, label, nodename):
	if nodename:
	    if string.lower(nodename) == '(dir)':
		addr = '../dir.html'
	    else:
		addr = makefile(nodename)
	    self.write(label, ': <A HREF="', addr, '" TYPE="',
		       label, '">', nodename, '</A>  \n')

    # --- Sectioning commands ---

    def popstack(self, type):
	if (self.node):
	    self.node.type = type
	    while self.nodestack:
		if self.nodestack[-1].type > type:
		    self.nodestack[-1].finalize()
		    self.nodestack[-1].flush()
		    del self.nodestack[-1]
		elif self.nodestack[-1].type == type:
		    if not self.nodestack[-1].next:
			self.nodestack[-1].next = self.node.name
		    if not self.node.prev:
			self.node.prev = self.nodestack[-1].name
		    self.nodestack[-1].finalize()
		    self.nodestack[-1].flush()
		    del self.nodestack[-1]
		else:
		    if type > 1 and not self.node.up:
			self.node.up = self.nodestack[-1].name
		    break

    def do_chapter(self, args):
	self.heading('H1', args, 0)
	self.popstack(1)

    def do_unnumbered(self, args):
	self.heading('H1', args, -1)
	self.popstack(1)
    def do_appendix(self, args):
	self.heading('H1', args, -1)
	self.popstack(1)
    def do_top(self, args):
	self.heading('H1', args, -1)
    def do_chapheading(self, args):
	self.heading('H1', args, -1)
    def do_majorheading(self, args):
	self.heading('H1', args, -1)

    def do_section(self, args):
	self.heading('H1', args, 1)
	self.popstack(2)

    def do_unnumberedsec(self, args):
	self.heading('H1', args, -1)
	self.popstack(2)
    def do_appendixsec(self, args):
	self.heading('H1', args, -1)
	self.popstack(2)
    do_appendixsection = do_appendixsec
    def do_heading(self, args):
	self.heading('H1', args, -1)

    def do_subsection(self, args):
	self.heading('H2', args, 2)
	self.popstack(3)
    def do_unnumberedsubsec(self, args):
	self.heading('H2', args, -1)
	self.popstack(3)
    def do_appendixsubsec(self, args):
	self.heading('H2', args, -1)
	self.popstack(3)
    def do_subheading(self, args):
	self.heading('H2', args, -1)

    def do_subsubsection(self, args):
	self.heading('H3', args, 3)
	self.popstack(4)
    def do_unnumberedsubsubsec(self, args):
	self.heading('H3', args, -1)
	self.popstack(4)
    def do_appendixsubsubsec(self, args):
	self.heading('H3', args, -1)
	self.popstack(4)
    def do_subsubheading(self, args):
	self.heading('H3', args, -1)

    def heading(self, type, args, level):
	if level >= 0:
	    while len(self.numbering) <= level:
		self.numbering.append(0)
	    del self.numbering[level+1:]
	    self.numbering[level] = self.numbering[level] + 1
	    x = ''
	    for i in self.numbering:
		x = x + `i` + '.'
	    args = x + ' ' + args
	    self.contents.append(level, args, self.nodename)
	self.write('<', type, '>')
	self.expand(args)
	self.write('</', type, '>\n')
	if self.debugging or self.print_headers:
	    print '---', args

    def do_contents(self, args):
	# pass
	self.listcontents('Table of Contents', 999)

    def do_shortcontents(self, args):
	pass
	# self.listcontents('Short Contents', 0)
    do_summarycontents = do_shortcontents

    def listcontents(self, title, maxlevel):
	self.write('<H1>', title, '</H1>\n<UL COMPACT PLAIN>\n')
	prevlevels = [0]
	for level, title, node in self.contents:
	    if level > maxlevel:
		continue
	    if level > prevlevels[-1]:
		# can only advance one level at a time
		self.write('  '*prevlevels[-1], '<UL PLAIN>\n')
		prevlevels.append(level)
	    elif level < prevlevels[-1]:
		# might drop back multiple levels
		while level < prevlevels[-1]:
		    del prevlevels[-1]
		    self.write('  '*prevlevels[-1],
			       '</UL>\n')
	    self.write('  '*level, '<LI> <A HREF="',
		       makefile(node), '">')
	    self.expand(title)
	    self.write('</A>\n')
	self.write('</UL>\n' * len(prevlevels))

    # --- Page lay-out ---

    # These commands are only meaningful in printed text

    def do_page(self, args): pass

    def do_need(self, args): pass

    def bgn_group(self, args): pass
    def end_group(self): pass

    # --- Line lay-out ---

    def do_sp(self, args):
	if self.nofill:
	    self.write('\n')
	else:
	    self.write('<P>\n')

    def do_hline(self, args):
	self.write('<HR>')

    # --- Function and variable definitions ---

    def bgn_deffn(self, args):
	self.write('<DL>')
	self.do_deffnx(args)

    def end_deffn(self):
	self.write('</DL>\n')

    def do_deffnx(self, args):
	self.write('<DT>')
	words = splitwords(args, 2)
	[category, name], rest = words[:2], words[2:]
	self.expand('@b{%s}' % name)
	for word in rest: self.expand(' ' + makevar(word))
	#self.expand(' -- ' + category)
	self.write('\n<DD>')
	self.index('fn', name)

    def bgn_defun(self, args): self.bgn_deffn('Function ' + args)
    end_defun = end_deffn
    def do_defunx(self, args): self.do_deffnx('Function ' + args)

    def bgn_defmac(self, args): self.bgn_deffn('Macro ' + args)
    end_defmac = end_deffn
    def do_defmacx(self, args): self.do_deffnx('Macro ' + args)

    def bgn_defspec(self, args): self.bgn_deffn('{Special Form} ' + args)
    end_defspec = end_deffn
    def do_defspecx(self, args): self.do_deffnx('{Special Form} ' + args)

    def bgn_defvr(self, args):
	self.write('<DL>')
	self.do_defvrx(args)

    end_defvr = end_deffn

    def do_defvrx(self, args):
	self.write('<DT>')
	words = splitwords(args, 2)
	[category, name], rest = words[:2], words[2:]
	self.expand('@code{%s}' % name)
	# If there are too many arguments, show them
	for word in rest: self.expand(' ' + word)
	#self.expand(' -- ' + category)
	self.write('\n<DD>')
	self.index('vr', name)

    def bgn_defvar(self, args): self.bgn_defvr('Variable ' + args)
    end_defvar = end_defvr
    def do_defvarx(self, args): self.do_defvrx('Variable ' + args)

    def bgn_defopt(self, args): self.bgn_defvr('{User Option} ' + args)
    end_defopt = end_defvr
    def do_defoptx(self, args): self.do_defvrx('{User Option} ' + args)

    # --- Ditto for typed languages ---

    def bgn_deftypefn(self, args):
	self.write('<DL>')
	self.do_deftypefnx(args)

    end_deftypefn = end_deffn

    def do_deftypefnx(self, args):
	self.write('<DT>')
	words = splitwords(args, 3)
	[category, datatype, name], rest = words[:3], words[3:]
	self.expand('@code{%s} @b{%s}' % (datatype, name))
	for word in rest: self.expand(' ' + makevar(word))
	#self.expand(' -- ' + category)
	self.write('\n<DD>')
	self.index('fn', name)


    def bgn_deftypefun(self, args): self.bgn_deftypefn('Function ' + args)
    end_deftypefun = end_deftypefn
    def do_deftypefunx(self, args): self.do_deftypefnx('Function ' + args)

    def bgn_deftypevr(self, args):
	self.write('<DL>')
	self.do_deftypevrx(args)

    end_deftypevr = end_deftypefn

    def do_deftypevrx(self, args):
	self.write('<DT>')
	words = splitwords(args, 3)
	[category, datatype, name], rest = words[:3], words[3:]
	self.expand('@code{%s} @b{%s}' % (datatype, name))
	# If there are too many arguments, show them
	for word in rest: self.expand(' ' + word)
	#self.expand(' -- ' + category)
	self.write('\n<DD>')
	self.index('fn', name)

    def bgn_deftypevar(self, args):
	self.bgn_deftypevr('Variable ' + args)
    end_deftypevar = end_deftypevr
    def do_deftypevarx(self, args):
	self.do_deftypevrx('Variable ' + args)

    # --- Ditto for object-oriented languages ---

    def bgn_defcv(self, args):
	self.write('<DL>')
	self.do_defcvx(args)

    end_defcv = end_deftypevr

    def do_defcvx(self, args):
	self.write('<DT>')
	words = splitwords(args, 3)
	[category, classname, name], rest = words[:3], words[3:]
	self.expand('@b{%s}' % name)
	# If there are too many arguments, show them
	for word in rest: self.expand(' ' + word)
	#self.expand(' -- %s of @code{%s}' % (category, classname))
	self.write('\n<DD>')
	self.index('vr', '%s @r{on %s}' % (name, classname))

    def bgn_defivar(self, args):
	self.bgn_defcv('{Instance Variable} ' + args)
    end_defivar = end_defcv
    def do_defivarx(self, args):
	self.do_defcvx('{Instance Variable} ' + args)

    def bgn_defop(self, args):
	self.write('<DL>')
	self.do_defopx(args)

    end_defop = end_defcv

    def do_defopx(self, args):
	self.write('<DT>')
	words = splitwords(args, 3)
	[category, classname, name], rest = words[:3], words[3:]
	self.expand('@b{%s}' % name)
	for word in rest: self.expand(' ' + makevar(word))
	#self.expand(' -- %s of @code{%s}' % (category, classname))
	self.write('\n<DD>')
	self.index('fn', '%s @r{on %s}' % (name, classname))

    def bgn_defmethod(self, args):
	self.bgn_defop('Method ' + args)
    end_defmethod = end_defop
    def do_defmethodx(self, args):
	self.do_defopx('Method ' + args)

    # --- Ditto for data types ---

    def bgn_deftp(self, args):
	self.write('<DL>')
	self.do_deftpx(args)

    end_deftp = end_defcv

    def do_deftpx(self, args):
	self.write('<DT>')
	words = splitwords(args, 2)
	[category, name], rest = words[:2], words[2:]
	self.expand('@b{%s}' % name)
	for word in rest: self.expand(' ' + word)
	#self.expand(' -- ' + category)
	self.write('\n<DD>')
	self.index('tp', name)

    # --- Making Lists and Tables

    def bgn_enumerate(self, args):
	if not args:
	    self.write('<OL>\n')
	    self.stackinfo[len(self.stack)] = '</OL>\n'
	else:
	    self.itemnumber = args
	    self.write('<UL>\n')
	    self.stackinfo[len(self.stack)] = '</UL>\n'
    def end_enumerate(self):
	self.itemnumber = None
	self.write(self.stackinfo[len(self.stack) + 1])
	del self.stackinfo[len(self.stack) + 1]

    def bgn_itemize(self, args):
	self.itemarg = args
	self.write('<UL>\n')
    def end_itemize(self):
	self.itemarg = None
	self.write('</UL>\n')

    def bgn_table(self, args):
	self.itemarg = args
	self.write('<DL>\n')
    def end_table(self):
	self.itemarg = None
	self.write('</DL>\n')

    def bgn_ftable(self, args):
	self.itemindex = 'fn'
	self.bgn_table(args)
    def end_ftable(self):
	self.itemindex = None
	self.end_table()

    def do_item(self, args):
	if self.itemindex: self.index(self.itemindex, args)
	if self.itemarg:
	    if self.itemarg[0] == '@' and self.itemarg[1:2] and \
			    self.itemarg[1] in string.letters:
		args = self.itemarg + '{' + args + '}'
	    else:
		# some other character, e.g. '-'
		args = self.itemarg + ' ' + args
	if self.itemnumber <> None:
	    args = self.itemnumber + '. ' + args
	    self.itemnumber = increment(self.itemnumber)
	if self.stack and self.stack[-1] == 'table':
	    self.write('<DT>')
	    self.expand(args)
	    self.write('\n<DD>')
	else:
	    self.write('<LI>')
	    self.expand(args)
	    self.write('  ')
    do_itemx = do_item # XXX Should suppress leading blank line

    # --- Enumerations, displays, quotations ---
    # XXX Most of these should increase the indentation somehow

    def bgn_quotation(self, args): self.write('<BLOCKQUOTE>')
    def end_quotation(self): self.write('</BLOCKQUOTE>\n')

    def bgn_example(self, args):
	self.nofill = self.nofill + 1
	self.write('<PRE>')
    def end_example(self):
	self.write('</PRE>\n')
	self.nofill = self.nofill - 1

    bgn_lisp = bgn_example # Synonym when contents are executable lisp code
    end_lisp = end_example

    bgn_smallexample = bgn_example # XXX Should use smaller font
    end_smallexample = end_example

    bgn_smalllisp = bgn_lisp # Ditto
    end_smalllisp = end_lisp

    bgn_display = bgn_example
    end_display = end_example

    bgn_format = bgn_display
    end_format = end_display

    def do_exdent(self, args): self.expand(args + '\n')
    # XXX Should really mess with indentation

    def bgn_flushleft(self, args):
	self.nofill = self.nofill + 1
	self.write('<PRE>\n')
    def end_flushleft(self):
	self.write('</PRE>\n')
	self.nofill = self.nofill - 1

    def bgn_flushright(self, args):
	self.nofill = self.nofill + 1
	self.write('<ADDRESS COMPACT>\n')
    def end_flushright(self):
	self.write('</ADDRESS>\n')
	self.nofill = self.nofill - 1

    def bgn_menu(self, args):
	self.write('<DIR>\n')
	self.write('  <STRONG><EM>Menu</EM></STRONG><P>\n')
    def end_menu(self):
	self.write('</DIR>\n')

    def bgn_cartouche(self, args): pass
    def end_cartouche(self): pass

    # --- Indices ---

    def resetindex(self):
	self.noncodeindices = ['cp']
	self.indextitle = {}
	self.indextitle['cp'] = 'Concept'
	self.indextitle['fn'] = 'Function'
	self.indextitle['ky'] = 'Keyword'
	self.indextitle['pg'] = 'Program'
	self.indextitle['tp'] = 'Type'
	self.indextitle['vr'] = 'Variable'
	#
	self.whichindex = {}
	for name in self.indextitle.keys():
	    self.whichindex[name] = []

    def user_index(self, name, args):
	if self.whichindex.has_key(name):
	    self.index(name, args)
	else:
	    print '*** No index named', `name`

    def do_cindex(self, args): self.index('cp', args)
    def do_findex(self, args): self.index('fn', args)
    def do_kindex(self, args): self.index('ky', args)
    def do_pindex(self, args): self.index('pg', args)
    def do_tindex(self, args): self.index('tp', args)
    def do_vindex(self, args): self.index('vr', args)

    def index(self, name, args):
	self.whichindex[name].append(args, self.nodename)

    def do_synindex(self, args):
	words = string.split(args)
	if len(words) <> 2:
	    print '*** bad @synindex', args
	    return
	[old, new] = words
	if not self.whichindex.has_key(old) or \
		  not self.whichindex.has_key(new):
	    print '*** bad key(s) in @synindex', args
	    return
	if old <> new and \
		  self.whichindex[old] is not self.whichindex[new]:
	    inew = self.whichindex[new]
	    inew[len(inew):] = self.whichindex[old]
	    self.whichindex[old] = inew
    do_syncodeindex = do_synindex # XXX Should use code font

    def do_printindex(self, args):
	words = string.split(args)
	for name in words:
	    if self.whichindex.has_key(name):
		self.prindex(name)
	    else:
		print '*** No index named', `name`

    def prindex(self, name):
	iscodeindex = (name not in self.noncodeindices)
	index = self.whichindex[name]
	if not index: return
	if self.debugging:
	    print '--- Generating', self.indextitle[name], 'index'
	#  The node already provides a title
	index1 = []
	junkprog = regex.compile('^\(@[a-z]+\)?{')
	for key, node in index:
	    sortkey = string.lower(key)
	    # Remove leading `@cmd{' from sort key
	    # -- don't bother about the matching `}'
	    oldsortkey = sortkey
	    while 1:
		i = junkprog.match(sortkey)
		if i < 0: break
		sortkey = sortkey[i:]
	    index1.append(sortkey, key, node)
	del index[:]
	index1.sort()
	self.write('<DL COMPACT>\n')
	prevkey = prevnode = None
	for sortkey, key, node in index1:
	    if (key, node) == (prevkey, prevnode):
		continue
	    if self.debugging > 1: print key, ':', node
	    self.write('<DT>')
	    if iscodeindex: key = '@code{' + key + '}'
	    if key != prevkey:
		self.expand(key)
	    self.write('\n<DD><A HREF="%s">%s</A>\n' % (makefile(node), node))
	    prevkey, prevnode = key, node
	self.write('</DL>\n')

    # --- Final error reports ---

    def report(self):
	if self.unknown:
	    print '--- Unrecognized commands ---'
	    cmds = self.unknown.keys()
	    cmds.sort()
	    for cmd in cmds:
		print string.ljust(cmd, 20), self.unknown[cmd]


class TexinfoParserHTML3(TexinfoParser):

    COPYRIGHT_SYMBOL = "&copy;"
    FN_ID_PATTERN = "[%(id)s]"
    FN_SOURCE_PATTERN = '<A ID=footnoteref%(id)s ' \
			'HREF="#footnotetext%(id)s">' + FN_ID_PATTERN + '</A>'
    FN_TARGET_PATTERN = '<FN ID=footnotetext%(id)s>\n' \
			'<P><A HREF="#footnoteref%(id)s">' + FN_ID_PATTERN \
			+ '</A>\n%(text)s</P></FN>\n'
    FN_HEADER = '<DIV CLASS=footnotes>\n  <HR NOSHADE WIDTH=200>\n' \
		'  <STRONG><EM>Footnotes</EM></STRONG>\n  <P>\n'

    Node = HTML3Node

    def bgn_quotation(self, args): self.write('<BQ>')
    def end_quotation(self): self.write('</BQ>\n')

    def bgn_example(self, args):
	# this use of <CODE> would not be legal in HTML 2.0,
	# but is in more recent DTDs.
	self.nofill = self.nofill + 1
	self.write('<PRE CLASS=example><CODE>')
    def end_example(self):
	self.write("</CODE></PRE>\n")
	self.nofill = self.nofill - 1

    def bgn_flushleft(self, args):
	self.nofill = self.nofill + 1
	self.write('<PRE CLASS=flushleft>\n')

    def bgn_flushright(self, args):
	self.nofill = self.nofill + 1
	self.write('<DIV ALIGN=right CLASS=flushright><ADDRESS COMPACT>\n')
    def end_flushright(self):
	self.write('</ADDRESS></DIV>\n')
	self.nofill = self.nofill - 1

    def bgn_menu(self, args):
	self.write('<UL PLAIN CLASS=menu>\n')
	self.write('  <LH>Menu</LH>\n')
    def end_menu(self):
	self.write('</UL>\n')


# Put @var{} around alphabetic substrings
def makevar(str):
    return '@var{'+str+'}'


# Split a string in "words" according to findwordend
def splitwords(str, minlength):
    words = []
    i = 0
    n = len(str)
    while i < n:
	while i < n and str[i] in ' \t\n': i = i+1
	if i >= n: break
	start = i
	i = findwordend(str, i, n)
	words.append(str[start:i])
    while len(words) < minlength: words.append('')
    return words


# Find the end of a "word", matching braces and interpreting @@ @{ @}
fwprog = regex.compile('[@{} ]')
def findwordend(str, i, n):
    level = 0
    while i < n:
	i = fwprog.search(str, i)
	if i < 0: break
	c = str[i]; i = i+1
	if c == '@': i = i+1 # Next character is not special
	elif c == '{': level = level+1
	elif c == '}': level = level-1
	elif c == ' ' and level <= 0: return i-1
    return n


# Convert a node name into a file name
def makefile(nodename):
    return fixfunnychars(nodename) + '.html'


# Characters that are perfectly safe in filenames and hyperlinks
goodchars = string.letters + string.digits + '!@-=+.'

# Replace characters that aren't perfectly safe by dashes
# Underscores are bad since Cern HTTPD treats them as delimiters for
# encoding times, so you get mismatches if you compress your files:
# a.html.gz will map to a_b.html.gz
def fixfunnychars(addr):
    i = 0
    while i < len(addr):
	c = addr[i]
	if c not in goodchars:
	    c = '-'
	    addr = addr[:i] + c + addr[i+1:]
	i = i + len(c)
    return addr


# Increment a string used as an enumeration
def increment(s):
    if not s:
	return '1'
    for sequence in string.digits, string.lowercase, string.uppercase:
	lastc = s[-1]
	if lastc in sequence:
	    i = string.index(sequence, lastc) + 1
	    if i >= len(sequence):
		if len(s) == 1:
		    s = sequence[0]*2
		    if s == '00':
			s = '10'
		else:
		    s = increment(s[:-1]) + sequence[0]
	    else:
		s = s[:-1] + sequence[i]
	    return s
    return s # Don't increment


def test():
    import sys
    debugging = 0
    print_headers = 0
    cont = 0
    html3 = 0
   
    while sys.argv[1:2] == ['-d']:
	debugging = debugging + 1
	del sys.argv[1:2]
    if sys.argv[1] == '-p':
	print_headers = 1
	del sys.argv[1]
    if sys.argv[1] == '-c':
	cont = 1
	del sys.argv[1]
    if sys.argv[1] == '-3':
	html3 = 1
	del sys.argv[1]
    if len(sys.argv) <> 3:
	print 'usage: texi2html [-d [-d]] [-p] [-c] inputfile outputdirectory'
	sys.exit(2)

    if html3:
	parser = TexinfoParserHTML3()
    else:
	parser = TexinfoParser()
    parser.cont = cont
    parser.debugging = debugging
    parser.print_headers = print_headers

    file = sys.argv[1]
    parser.setdirname(sys.argv[2])
    if file == '-':
	fp = sys.stdin
    else:
	parser.setincludedir(os.path.dirname(file))
	try:
	    fp = open(file, 'r')
	except IOError, msg:
	    print file, ':', msg
	    sys.exit(1)
    parser.parse(fp)
    fp.close()
    parser.report()


if __name__ == "__main__":
    test()