File: gitstats

package info (click to toggle)
gitstats 2015.10.03-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 276 kB
  • ctags: 33
  • sloc: python: 1,023; makefile: 63
file content (1491 lines) | stat: -rwxr-xr-x 48,315 bytes parent folder | download
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
#!/usr/bin/python2.7
# Copyright (c) 2007-2014 Heikki Hokkanen <hoxu@users.sf.net> & others (see doc/AUTHOR)
# GPLv2 / GPLv3
import datetime
import getopt
import glob
import os
import pickle
import platform
import re
import shutil
import subprocess
import sys
import time
import zlib

if sys.version_info < (2, 6):
	print >> sys.stderr, "Python 2.6 or higher is required for gitstats"
	sys.exit(1)

from multiprocessing import Pool

os.environ['LC_ALL'] = 'C'

GNUPLOT_COMMON = 'set terminal png transparent size 640,240\nset size 1.0,1.0\n'
ON_LINUX = (platform.system() == 'Linux')
WEEKDAYS = ('Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun')

exectime_internal = 0.0
exectime_external = 0.0
time_start = time.time()

# By default, gnuplot is searched from path, but can be overridden with the
# environment variable "GNUPLOT"
gnuplot_cmd = 'gnuplot'
if 'GNUPLOT' in os.environ:
	gnuplot_cmd = os.environ['GNUPLOT']

conf = {
	'max_domains': 10,
	'max_ext_length': 10,
	'style': 'gitstats.css',
	'max_authors': 20,
	'authors_top': 5,
	'commit_begin': '',
	'commit_end': 'HEAD',
	'linear_linestats': 1,
	'project_name': '',
	'processes': 8,
	'start_date': ''
}

def getpipeoutput(cmds, quiet = False):
	global exectime_external
	start = time.time()
	if not quiet and ON_LINUX and os.isatty(1):
		print '>> ' + ' | '.join(cmds),
		sys.stdout.flush()
	p = subprocess.Popen(cmds[0], stdout = subprocess.PIPE, shell = True)
	processes=[p]
	for x in cmds[1:]:
		p = subprocess.Popen(x, stdin = p.stdout, stdout = subprocess.PIPE, shell = True)
		processes.append(p)
	output = p.communicate()[0]
	for p in processes:
		p.wait()
	end = time.time()
	if not quiet:
		if ON_LINUX and os.isatty(1):
			print '\r',
		print '[%.5f] >> %s' % (end - start, ' | '.join(cmds))
	exectime_external += (end - start)
	return output.rstrip('\n')

def getlogrange(defaultrange = 'HEAD', end_only = True):
	commit_range = getcommitrange(defaultrange, end_only)
	if len(conf['start_date']) > 0:
		return '--since=%s %s' % (conf['start_date'], commit_range)
	return commit_range

def getcommitrange(defaultrange = 'HEAD', end_only = False):
	if len(conf['commit_end']) > 0:
		if end_only or len(conf['commit_begin']) == 0:
			return conf['commit_end']
		return '%s..%s' % (conf['commit_begin'], conf['commit_end'])
	return defaultrange

def getkeyssortedbyvalues(dict):
	return map(lambda el : el[1], sorted(map(lambda el : (el[1], el[0]), dict.items())))

# dict['author'] = { 'commits': 512 } - ...key(dict, 'commits')
def getkeyssortedbyvaluekey(d, key):
	return map(lambda el : el[1], sorted(map(lambda el : (d[el][key], el), d.keys())))

def getstatsummarycounts(line):
	numbers = re.findall('\d+', line)
	if   len(numbers) == 1:
		# neither insertions nor deletions: may probably only happen for "0 files changed"
		numbers.append(0);
		numbers.append(0);
	elif len(numbers) == 2 and line.find('(+)') != -1:
		numbers.append(0);    # only insertions were printed on line
	elif len(numbers) == 2 and line.find('(-)') != -1:
		numbers.insert(1, 0); # only deletions were printed on line
	return numbers

VERSION = 0
def getversion():
	global VERSION
	if VERSION == 0:
		gitstats_repo = os.path.dirname(os.path.abspath(__file__))
		VERSION = getpipeoutput(["git --git-dir=%s/.git --work-tree=%s rev-parse --short %s" %
			(gitstats_repo, gitstats_repo, getcommitrange('HEAD').split('\n')[0])])
	return VERSION

def getgitversion():
	return getpipeoutput(['git --version']).split('\n')[0]

def getgnuplotversion():
	return getpipeoutput(['%s --version' % gnuplot_cmd]).split('\n')[0]

def getnumoffilesfromrev(time_rev):
	"""
	Get number of files changed in commit
	"""
	time, rev = time_rev
	return (int(time), rev, int(getpipeoutput(['git ls-tree -r --name-only "%s"' % rev, 'wc -l']).split('\n')[0]))

def getnumoflinesinblob(ext_blob):
	"""
	Get number of lines in blob
	"""
	ext, blob_id = ext_blob
	return (ext, blob_id, int(getpipeoutput(['git cat-file blob %s' % blob_id, 'wc -l']).split()[0]))

class DataCollector:
	"""Manages data collection from a revision control repository."""
	def __init__(self):
		self.stamp_created = time.time()
		self.cache = {}
		self.total_authors = 0
		self.activity_by_hour_of_day = {} # hour -> commits
		self.activity_by_day_of_week = {} # day -> commits
		self.activity_by_month_of_year = {} # month [1-12] -> commits
		self.activity_by_hour_of_week = {} # weekday -> hour -> commits
		self.activity_by_hour_of_day_busiest = 0
		self.activity_by_hour_of_week_busiest = 0
		self.activity_by_year_week = {} # yy_wNN -> commits
		self.activity_by_year_week_peak = 0

		self.authors = {} # name -> {commits, first_commit_stamp, last_commit_stamp, last_active_day, active_days, lines_added, lines_removed}

		self.total_commits = 0
		self.total_files = 0
		self.authors_by_commits = 0

		# domains
		self.domains = {} # domain -> commits

		# author of the month
		self.author_of_month = {} # month -> author -> commits
		self.author_of_year = {} # year -> author -> commits
		self.commits_by_month = {} # month -> commits
		self.commits_by_year = {} # year -> commits
		self.lines_added_by_month = {} # month -> lines added
		self.lines_added_by_year = {} # year -> lines added
		self.lines_removed_by_month = {} # month -> lines removed
		self.lines_removed_by_year = {} # year -> lines removed
		self.first_commit_stamp = 0
		self.last_commit_stamp = 0
		self.last_active_day = None
		self.active_days = set()

		# lines
		self.total_lines = 0
		self.total_lines_added = 0
		self.total_lines_removed = 0

		# size
		self.total_size = 0

		# timezone
		self.commits_by_timezone = {} # timezone -> commits

		# tags
		self.tags = {}

		self.files_by_stamp = {} # stamp -> files

		# extensions
		self.extensions = {} # extension -> files, lines

		# line statistics
		self.changes_by_date = {} # stamp -> { files, ins, del }

	##
	# This should be the main function to extract data from the repository.
	def collect(self, dir):
		self.dir = dir
		if len(conf['project_name']) == 0:
			self.projectname = os.path.basename(os.path.abspath(dir))
		else:
			self.projectname = conf['project_name']
	
	##
	# Load cacheable data
	def loadCache(self, cachefile):
		if not os.path.exists(cachefile):
			return
		print 'Loading cache...'
		f = open(cachefile, 'rb')
		try:
			self.cache = pickle.loads(zlib.decompress(f.read()))
		except:
			# temporary hack to upgrade non-compressed caches
			f.seek(0)
			self.cache = pickle.load(f)
		f.close()
	
	##
	# Produce any additional statistics from the extracted data.
	def refine(self):
		pass

	##
	# : get a dictionary of author
	def getAuthorInfo(self, author):
		return None
	
	def getActivityByDayOfWeek(self):
		return {}

	def getActivityByHourOfDay(self):
		return {}

	# : get a dictionary of domains
	def getDomainInfo(self, domain):
		return None

	##
	# Get a list of authors
	def getAuthors(self):
		return []
	
	def getFirstCommitDate(self):
		return datetime.datetime.now()
	
	def getLastCommitDate(self):
		return datetime.datetime.now()
	
	def getStampCreated(self):
		return self.stamp_created
	
	def getTags(self):
		return []
	
	def getTotalAuthors(self):
		return -1
	
	def getTotalCommits(self):
		return -1
		
	def getTotalFiles(self):
		return -1
	
	def getTotalLOC(self):
		return -1
	
	##
	# Save cacheable data
	def saveCache(self, cachefile):
		print 'Saving cache...'
		tempfile = cachefile + '.tmp'
		f = open(tempfile, 'wb')
		#pickle.dump(self.cache, f)
		data = zlib.compress(pickle.dumps(self.cache))
		f.write(data)
		f.close()
		try:
			os.remove(cachefile)
		except OSError:
			pass
		os.rename(tempfile, cachefile)

class GitDataCollector(DataCollector):
	def collect(self, dir):
		DataCollector.collect(self, dir)

		self.total_authors += int(getpipeoutput(['git shortlog -s %s' % getlogrange(), 'wc -l']))
		#self.total_lines = int(getoutput('git-ls-files -z |xargs -0 cat |wc -l'))

		# tags
		lines = getpipeoutput(['git show-ref --tags']).split('\n')
		for line in lines:
			if len(line) == 0:
				continue
			(hash, tag) = line.split(' ')

			tag = tag.replace('refs/tags/', '')
			output = getpipeoutput(['git log "%s" --pretty=format:"%%at %%aN" -n 1' % hash])
			if len(output) > 0:
				parts = output.split(' ')
				stamp = 0
				try:
					stamp = int(parts[0])
				except ValueError:
					stamp = 0
				self.tags[tag] = { 'stamp': stamp, 'hash' : hash, 'date' : datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), 'commits': 0, 'authors': {} }

		# collect info on tags, starting from latest
		tags_sorted_by_date_desc = map(lambda el : el[1], reversed(sorted(map(lambda el : (el[1]['date'], el[0]), self.tags.items()))))
		prev = None
		for tag in reversed(tags_sorted_by_date_desc):
			cmd = 'git shortlog -s "%s"' % tag
			if prev != None:
				cmd += ' "^%s"' % prev
			output = getpipeoutput([cmd])
			if len(output) == 0:
				continue
			prev = tag
			for line in output.split('\n'):
				parts = re.split('\s+', line, 2)
				commits = int(parts[1])
				author = parts[2]
				self.tags[tag]['commits'] += commits
				self.tags[tag]['authors'][author] = commits

		# Collect revision statistics
		# Outputs "<stamp> <date> <time> <timezone> <author> '<' <mail> '>'"
		lines = getpipeoutput(['git rev-list --pretty=format:"%%at %%ai %%aN <%%aE>" %s' % getlogrange('HEAD'), 'grep -v ^commit']).split('\n')
		for line in lines:
			parts = line.split(' ', 4)
			author = ''
			try:
				stamp = int(parts[0])
			except ValueError:
				stamp = 0
			timezone = parts[3]
			author, mail = parts[4].split('<', 1)
			author = author.rstrip()
			mail = mail.rstrip('>')
			domain = '?'
			if mail.find('@') != -1:
				domain = mail.rsplit('@', 1)[1]
			date = datetime.datetime.fromtimestamp(float(stamp))

			# First and last commit stamp (may be in any order because of cherry-picking and patches)
			if stamp > self.last_commit_stamp:
				self.last_commit_stamp = stamp
			if self.first_commit_stamp == 0 or stamp < self.first_commit_stamp:
				self.first_commit_stamp = stamp

			# activity
			# hour
			hour = date.hour
			self.activity_by_hour_of_day[hour] = self.activity_by_hour_of_day.get(hour, 0) + 1
			# most active hour?
			if self.activity_by_hour_of_day[hour] > self.activity_by_hour_of_day_busiest:
				self.activity_by_hour_of_day_busiest = self.activity_by_hour_of_day[hour]

			# day of week
			day = date.weekday()
			self.activity_by_day_of_week[day] = self.activity_by_day_of_week.get(day, 0) + 1

			# domain stats
			if domain not in self.domains:
				self.domains[domain] = {}
			# commits
			self.domains[domain]['commits'] = self.domains[domain].get('commits', 0) + 1

			# hour of week
			if day not in self.activity_by_hour_of_week:
				self.activity_by_hour_of_week[day] = {}
			self.activity_by_hour_of_week[day][hour] = self.activity_by_hour_of_week[day].get(hour, 0) + 1
			# most active hour?
			if self.activity_by_hour_of_week[day][hour] > self.activity_by_hour_of_week_busiest:
				self.activity_by_hour_of_week_busiest = self.activity_by_hour_of_week[day][hour]

			# month of year
			month = date.month
			self.activity_by_month_of_year[month] = self.activity_by_month_of_year.get(month, 0) + 1

			# yearly/weekly activity
			yyw = date.strftime('%Y-%W')
			self.activity_by_year_week[yyw] = self.activity_by_year_week.get(yyw, 0) + 1
			if self.activity_by_year_week_peak < self.activity_by_year_week[yyw]:
				self.activity_by_year_week_peak = self.activity_by_year_week[yyw]

			# author stats
			if author not in self.authors:
				self.authors[author] = {}
			# commits, note again that commits may be in any date order because of cherry-picking and patches
			if 'last_commit_stamp' not in self.authors[author]:
				self.authors[author]['last_commit_stamp'] = stamp
			if stamp > self.authors[author]['last_commit_stamp']:
				self.authors[author]['last_commit_stamp'] = stamp
			if 'first_commit_stamp' not in self.authors[author]:
				self.authors[author]['first_commit_stamp'] = stamp
			if stamp < self.authors[author]['first_commit_stamp']:
				self.authors[author]['first_commit_stamp'] = stamp

			# author of the month/year
			yymm = date.strftime('%Y-%m')
			if yymm in self.author_of_month:
				self.author_of_month[yymm][author] = self.author_of_month[yymm].get(author, 0) + 1
			else:
				self.author_of_month[yymm] = {}
				self.author_of_month[yymm][author] = 1
			self.commits_by_month[yymm] = self.commits_by_month.get(yymm, 0) + 1

			yy = date.year
			if yy in self.author_of_year:
				self.author_of_year[yy][author] = self.author_of_year[yy].get(author, 0) + 1
			else:
				self.author_of_year[yy] = {}
				self.author_of_year[yy][author] = 1
			self.commits_by_year[yy] = self.commits_by_year.get(yy, 0) + 1

			# authors: active days
			yymmdd = date.strftime('%Y-%m-%d')
			if 'last_active_day' not in self.authors[author]:
				self.authors[author]['last_active_day'] = yymmdd
				self.authors[author]['active_days'] = set([yymmdd])
			elif yymmdd != self.authors[author]['last_active_day']:
				self.authors[author]['last_active_day'] = yymmdd
				self.authors[author]['active_days'].add(yymmdd)

			# project: active days
			if yymmdd != self.last_active_day:
				self.last_active_day = yymmdd
				self.active_days.add(yymmdd)

			# timezone
			self.commits_by_timezone[timezone] = self.commits_by_timezone.get(timezone, 0) + 1

		# outputs "<stamp> <files>" for each revision
		revlines = getpipeoutput(['git rev-list --pretty=format:"%%at %%T" %s' % getlogrange('HEAD'), 'grep -v ^commit']).strip().split('\n')
		lines = []
		revs_to_read = []
		time_rev_count = []
		#Look up rev in cache and take info from cache if found
		#If not append rev to list of rev to read from repo
		for revline in revlines:
			time, rev = revline.split(' ')
			#if cache empty then add time and rev to list of new rev's
			#otherwise try to read needed info from cache
			if 'files_in_tree' not in self.cache.keys():
				revs_to_read.append((time,rev))
				continue
			if rev in self.cache['files_in_tree'].keys():
				lines.append('%d %d' % (int(time), self.cache['files_in_tree'][rev]))
			else:
				revs_to_read.append((time,rev))

		#Read revisions from repo
		pool = Pool(processes=conf['processes'])
		time_rev_count = pool.map(getnumoffilesfromrev, revs_to_read)
		pool.terminate()
		pool.join()

		#Update cache with new revisions and append then to general list
		for (time, rev, count) in time_rev_count:
			if 'files_in_tree' not in self.cache:
				self.cache['files_in_tree'] = {}
			self.cache['files_in_tree'][rev] = count
			lines.append('%d %d' % (int(time), count))

		self.total_commits += len(lines)
		for line in lines:
			parts = line.split(' ')
			if len(parts) != 2:
				continue
			(stamp, files) = parts[0:2]
			try:
				self.files_by_stamp[int(stamp)] = int(files)
			except ValueError:
				print 'Warning: failed to parse line "%s"' % line

		# extensions and size of files
		lines = getpipeoutput(['git ls-tree -r -l -z %s' % getcommitrange('HEAD', end_only = True)]).split('\000')
		blobs_to_read = []
		for line in lines:
			if len(line) == 0:
				continue
			parts = re.split('\s+', line, 4)
			if parts[0] == '160000' and parts[3] == '-':
				# skip submodules
				continue
			blob_id = parts[2]
			size = int(parts[3])
			fullpath = parts[4]

			self.total_size += size
			self.total_files += 1

			filename = fullpath.split('/')[-1] # strip directories
			if filename.find('.') == -1 or filename.rfind('.') == 0:
				ext = ''
			else:
				ext = filename[(filename.rfind('.') + 1):]
			if len(ext) > conf['max_ext_length']:
				ext = ''
			if ext not in self.extensions:
				self.extensions[ext] = {'files': 0, 'lines': 0}
			self.extensions[ext]['files'] += 1
			#if cache empty then add ext and blob id to list of new blob's
			#otherwise try to read needed info from cache
			if 'lines_in_blob' not in self.cache.keys():
				blobs_to_read.append((ext,blob_id))
				continue
			if blob_id in self.cache['lines_in_blob'].keys():
				self.extensions[ext]['lines'] += self.cache['lines_in_blob'][blob_id]
			else:
				blobs_to_read.append((ext,blob_id))

		#Get info abount line count for new blob's that wasn't found in cache
		pool = Pool(processes=conf['processes'])
		ext_blob_linecount = pool.map(getnumoflinesinblob, blobs_to_read)
		pool.terminate()
		pool.join()

		#Update cache and write down info about number of number of lines
		for (ext, blob_id, linecount) in ext_blob_linecount:
			if 'lines_in_blob' not in self.cache:
				self.cache['lines_in_blob'] = {}
			self.cache['lines_in_blob'][blob_id] = linecount
			self.extensions[ext]['lines'] += self.cache['lines_in_blob'][blob_id]

		# line statistics
		# outputs:
		#  N files changed, N insertions (+), N deletions(-)
		# <stamp> <author>
		self.changes_by_date = {} # stamp -> { files, ins, del }
		# computation of lines of code by date is better done
		# on a linear history.
		extra = ''
		if conf['linear_linestats']:
			extra = '--first-parent -m'
		lines = getpipeoutput(['git log --shortstat %s --pretty=format:"%%at %%aN" %s' % (extra, getlogrange('HEAD'))]).split('\n')
		lines.reverse()
		files = 0; inserted = 0; deleted = 0; total_lines = 0
		author = None
		for line in lines:
			if len(line) == 0:
				continue

			# <stamp> <author>
			if re.search('files? changed', line) == None:
				pos = line.find(' ')
				if pos != -1:
					try:
						(stamp, author) = (int(line[:pos]), line[pos+1:])
						self.changes_by_date[stamp] = { 'files': files, 'ins': inserted, 'del': deleted, 'lines': total_lines }

						date = datetime.datetime.fromtimestamp(stamp)
						yymm = date.strftime('%Y-%m')
						self.lines_added_by_month[yymm] = self.lines_added_by_month.get(yymm, 0) + inserted
						self.lines_removed_by_month[yymm] = self.lines_removed_by_month.get(yymm, 0) + deleted

						yy = date.year
						self.lines_added_by_year[yy] = self.lines_added_by_year.get(yy,0) + inserted
						self.lines_removed_by_year[yy] = self.lines_removed_by_year.get(yy, 0) + deleted

						files, inserted, deleted = 0, 0, 0
					except ValueError:
						print 'Warning: unexpected line "%s"' % line
				else:
					print 'Warning: unexpected line "%s"' % line
			else:
				numbers = getstatsummarycounts(line)

				if len(numbers) == 3:
					(files, inserted, deleted) = map(lambda el : int(el), numbers)
					total_lines += inserted
					total_lines -= deleted
					self.total_lines_added += inserted
					self.total_lines_removed += deleted

				else:
					print 'Warning: failed to handle line "%s"' % line
					(files, inserted, deleted) = (0, 0, 0)
				#self.changes_by_date[stamp] = { 'files': files, 'ins': inserted, 'del': deleted }
		self.total_lines += total_lines

		# Per-author statistics

		# defined for stamp, author only if author commited at this timestamp.
		self.changes_by_date_by_author = {} # stamp -> author -> lines_added

		# Similar to the above, but never use --first-parent
		# (we need to walk through every commit to know who
		# committed what, not just through mainline)
		lines = getpipeoutput(['git log --shortstat --date-order --pretty=format:"%%at %%aN" %s' % (getlogrange('HEAD'))]).split('\n')
		lines.reverse()
		files = 0; inserted = 0; deleted = 0
		author = None
		stamp = 0
		for line in lines:
			if len(line) == 0:
				continue

			# <stamp> <author>
			if re.search('files? changed', line) == None:
				pos = line.find(' ')
				if pos != -1:
					try:
						oldstamp = stamp
						(stamp, author) = (int(line[:pos]), line[pos+1:])
						if oldstamp > stamp:
							# clock skew, keep old timestamp to avoid having ugly graph
							stamp = oldstamp
						if author not in self.authors:
							self.authors[author] = { 'lines_added' : 0, 'lines_removed' : 0, 'commits' : 0}
						self.authors[author]['commits'] = self.authors[author].get('commits', 0) + 1
						self.authors[author]['lines_added'] = self.authors[author].get('lines_added', 0) + inserted
						self.authors[author]['lines_removed'] = self.authors[author].get('lines_removed', 0) + deleted
						if stamp not in self.changes_by_date_by_author:
							self.changes_by_date_by_author[stamp] = {}
						if author not in self.changes_by_date_by_author[stamp]:
							self.changes_by_date_by_author[stamp][author] = {}
						self.changes_by_date_by_author[stamp][author]['lines_added'] = self.authors[author]['lines_added']
						self.changes_by_date_by_author[stamp][author]['commits'] = self.authors[author]['commits']
						files, inserted, deleted = 0, 0, 0
					except ValueError:
						print 'Warning: unexpected line "%s"' % line
				else:
					print 'Warning: unexpected line "%s"' % line
			else:
				numbers = getstatsummarycounts(line);

				if len(numbers) == 3:
					(files, inserted, deleted) = map(lambda el : int(el), numbers)
				else:
					print 'Warning: failed to handle line "%s"' % line
					(files, inserted, deleted) = (0, 0, 0)
	
	def refine(self):
		# authors
		# name -> {place_by_commits, commits_frac, date_first, date_last, timedelta}
		self.authors_by_commits = getkeyssortedbyvaluekey(self.authors, 'commits')
		self.authors_by_commits.reverse() # most first
		for i, name in enumerate(self.authors_by_commits):
			self.authors[name]['place_by_commits'] = i + 1

		for name in self.authors.keys():
			a = self.authors[name]
			a['commits_frac'] = (100 * float(a['commits'])) / self.getTotalCommits()
			date_first = datetime.datetime.fromtimestamp(a['first_commit_stamp'])
			date_last = datetime.datetime.fromtimestamp(a['last_commit_stamp'])
			delta = date_last - date_first
			a['date_first'] = date_first.strftime('%Y-%m-%d')
			a['date_last'] = date_last.strftime('%Y-%m-%d')
			a['timedelta'] = delta
			if 'lines_added' not in a: a['lines_added'] = 0
			if 'lines_removed' not in a: a['lines_removed'] = 0
	
	def getActiveDays(self):
		return self.active_days

	def getActivityByDayOfWeek(self):
		return self.activity_by_day_of_week

	def getActivityByHourOfDay(self):
		return self.activity_by_hour_of_day

	def getAuthorInfo(self, author):
		return self.authors[author]
	
	def getAuthors(self, limit = None):
		res = getkeyssortedbyvaluekey(self.authors, 'commits')
		res.reverse()
		return res[:limit]
	
	def getCommitDeltaDays(self):
		return (self.last_commit_stamp / 86400 - self.first_commit_stamp / 86400) + 1

	def getDomainInfo(self, domain):
		return self.domains[domain]

	def getDomains(self):
		return self.domains.keys()
	
	def getFirstCommitDate(self):
		return datetime.datetime.fromtimestamp(self.first_commit_stamp)
	
	def getLastCommitDate(self):
		return datetime.datetime.fromtimestamp(self.last_commit_stamp)
	
	def getTags(self):
		lines = getpipeoutput(['git show-ref --tags', 'cut -d/ -f3'])
		return lines.split('\n')
	
	def getTagDate(self, tag):
		return self.revToDate('tags/' + tag)
	
	def getTotalAuthors(self):
		return self.total_authors
	
	def getTotalCommits(self):
		return self.total_commits

	def getTotalFiles(self):
		return self.total_files
	
	def getTotalLOC(self):
		return self.total_lines

	def getTotalSize(self):
		return self.total_size
	
	def revToDate(self, rev):
		stamp = int(getpipeoutput(['git log --pretty=format:%%at "%s" -n 1' % rev]))
		return datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d')

class ReportCreator:
	"""Creates the actual report based on given data."""
	def __init__(self):
		pass
	
	def create(self, data, path):
		self.data = data
		self.path = path

def html_linkify(text):
	return text.lower().replace(' ', '_')

def html_header(level, text):
	name = html_linkify(text)
	return '\n<h%d id="%s"><a href="#%s">%s</a></h%d>\n\n' % (level, name, name, text, level)

class HTMLReportCreator(ReportCreator):
	def create(self, data, path):
		ReportCreator.create(self, data, path)
		self.title = data.projectname

		# copy static files. Looks in the binary directory, ../share/gitstats and /usr/share/gitstats
		binarypath = os.path.dirname(os.path.abspath(__file__))
		secondarypath = os.path.join(binarypath, '..', 'share', 'gitstats')
		basedirs = [binarypath, secondarypath, '/usr/share/gitstats']
		for file in (conf['style'], 'sortable.js', 'arrow-up.gif', 'arrow-down.gif', 'arrow-none.gif'):
			for base in basedirs:
				src = base + '/' + file
				if os.path.exists(src):
					shutil.copyfile(src, path + '/' + file)
					break
			else:
				print 'Warning: "%s" not found, so not copied (searched: %s)' % (file, basedirs)

		f = open(path + "/index.html", 'w')
		format = '%Y-%m-%d %H:%M:%S'
		self.printHeader(f)

		f.write('<h1>GitStats - %s</h1>' % data.projectname)

		self.printNav(f)

		f.write('<dl>')
		f.write('<dt>Project name</dt><dd>%s</dd>' % (data.projectname))
		f.write('<dt>Generated</dt><dd>%s (in %d seconds)</dd>' % (datetime.datetime.now().strftime(format), time.time() - data.getStampCreated()))
		f.write('<dt>Generator</dt><dd><a href="http://gitstats.sourceforge.net/">GitStats</a> (version %s), %s, %s</dd>' % (getversion(), getgitversion(), getgnuplotversion()))
		f.write('<dt>Report Period</dt><dd>%s to %s</dd>' % (data.getFirstCommitDate().strftime(format), data.getLastCommitDate().strftime(format)))
		f.write('<dt>Age</dt><dd>%d days, %d active days (%3.2f%%)</dd>' % (data.getCommitDeltaDays(), len(data.getActiveDays()), (100.0 * len(data.getActiveDays()) / data.getCommitDeltaDays())))
		f.write('<dt>Total Files</dt><dd>%s</dd>' % data.getTotalFiles())
		f.write('<dt>Total Lines of Code</dt><dd>%s (%d added, %d removed)</dd>' % (data.getTotalLOC(), data.total_lines_added, data.total_lines_removed))
		f.write('<dt>Total Commits</dt><dd>%s (average %.1f commits per active day, %.1f per all days)</dd>' % (data.getTotalCommits(), float(data.getTotalCommits()) / len(data.getActiveDays()), float(data.getTotalCommits()) / data.getCommitDeltaDays()))
		f.write('<dt>Authors</dt><dd>%s (average %.1f commits per author)</dd>' % (data.getTotalAuthors(), (1.0 * data.getTotalCommits()) / data.getTotalAuthors()))
		f.write('</dl>')

		f.write('</body>\n</html>')
		f.close()

		###
		# Activity
		f = open(path + '/activity.html', 'w')
		self.printHeader(f)
		f.write('<h1>Activity</h1>')
		self.printNav(f)

		#f.write('<h2>Last 30 days</h2>')

		#f.write('<h2>Last 12 months</h2>')

		# Weekly activity
		WEEKS = 32
		f.write(html_header(2, 'Weekly activity'))
		f.write('<p>Last %d weeks</p>' % WEEKS)

		# generate weeks to show (previous N weeks from now)
		now = datetime.datetime.now()
		deltaweek = datetime.timedelta(7)
		weeks = []
		stampcur = now
		for i in range(0, WEEKS):
			weeks.insert(0, stampcur.strftime('%Y-%W'))
			stampcur -= deltaweek

		# top row: commits & bar
		f.write('<table class="noborders"><tr>')
		for i in range(0, WEEKS):
			commits = 0
			if weeks[i] in data.activity_by_year_week:
				commits = data.activity_by_year_week[weeks[i]]

			percentage = 0
			if weeks[i] in data.activity_by_year_week:
				percentage = float(data.activity_by_year_week[weeks[i]]) / data.activity_by_year_week_peak
			height = max(1, int(200 * percentage))
			f.write('<td style="text-align: center; vertical-align: bottom">%d<div style="display: block; background-color: red; width: 20px; height: %dpx"></div></td>' % (commits, height))

		# bottom row: year/week
		f.write('</tr><tr>')
		for i in range(0, WEEKS):
			f.write('<td>%s</td>' % (WEEKS - i))
		f.write('</tr></table>')

		# Hour of Day
		f.write(html_header(2, 'Hour of Day'))
		hour_of_day = data.getActivityByHourOfDay()
		f.write('<table><tr><th>Hour</th>')
		for i in range(0, 24):
			f.write('<th>%d</th>' % i)
		f.write('</tr>\n<tr><th>Commits</th>')
		fp = open(path + '/hour_of_day.dat', 'w')
		for i in range(0, 24):
			if i in hour_of_day:
				r = 127 + int((float(hour_of_day[i]) / data.activity_by_hour_of_day_busiest) * 128)
				f.write('<td style="background-color: rgb(%d, 0, 0)">%d</td>' % (r, hour_of_day[i]))
				fp.write('%d %d\n' % (i, hour_of_day[i]))
			else:
				f.write('<td>0</td>')
				fp.write('%d 0\n' % i)
		fp.close()
		f.write('</tr>\n<tr><th>%</th>')
		totalcommits = data.getTotalCommits()
		for i in range(0, 24):
			if i in hour_of_day:
				r = 127 + int((float(hour_of_day[i]) / data.activity_by_hour_of_day_busiest) * 128)
				f.write('<td style="background-color: rgb(%d, 0, 0)">%.2f</td>' % (r, (100.0 * hour_of_day[i]) / totalcommits))
			else:
				f.write('<td>0.00</td>')
		f.write('</tr></table>')
		f.write('<img src="hour_of_day.png" alt="Hour of Day">')
		fg = open(path + '/hour_of_day.dat', 'w')
		for i in range(0, 24):
			if i in hour_of_day:
				fg.write('%d %d\n' % (i + 1, hour_of_day[i]))
			else:
				fg.write('%d 0\n' % (i + 1))
		fg.close()

		# Day of Week
		f.write(html_header(2, 'Day of Week'))
		day_of_week = data.getActivityByDayOfWeek()
		f.write('<div class="vtable"><table>')
		f.write('<tr><th>Day</th><th>Total (%)</th></tr>')
		fp = open(path + '/day_of_week.dat', 'w')
		for d in range(0, 7):
			commits = 0
			if d in day_of_week:
				commits = day_of_week[d]
			fp.write('%d %s %d\n' % (d + 1, WEEKDAYS[d], commits))
			f.write('<tr>')
			f.write('<th>%s</th>' % (WEEKDAYS[d]))
			if d in day_of_week:
				f.write('<td>%d (%.2f%%)</td>' % (day_of_week[d], (100.0 * day_of_week[d]) / totalcommits))
			else:
				f.write('<td>0</td>')
			f.write('</tr>')
		f.write('</table></div>')
		f.write('<img src="day_of_week.png" alt="Day of Week">')
		fp.close()

		# Hour of Week
		f.write(html_header(2, 'Hour of Week'))
		f.write('<table>')

		f.write('<tr><th>Weekday</th>')
		for hour in range(0, 24):
			f.write('<th>%d</th>' % (hour))
		f.write('</tr>')

		for weekday in range(0, 7):
			f.write('<tr><th>%s</th>' % (WEEKDAYS[weekday]))
			for hour in range(0, 24):
				try:
					commits = data.activity_by_hour_of_week[weekday][hour]
				except KeyError:
					commits = 0
				if commits != 0:
					f.write('<td')
					r = 127 + int((float(commits) / data.activity_by_hour_of_week_busiest) * 128)
					f.write(' style="background-color: rgb(%d, 0, 0)"' % r)
					f.write('>%d</td>' % commits)
				else:
					f.write('<td></td>')
			f.write('</tr>')

		f.write('</table>')

		# Month of Year
		f.write(html_header(2, 'Month of Year'))
		f.write('<div class="vtable"><table>')
		f.write('<tr><th>Month</th><th>Commits (%)</th></tr>')
		fp = open (path + '/month_of_year.dat', 'w')
		for mm in range(1, 13):
			commits = 0
			if mm in data.activity_by_month_of_year:
				commits = data.activity_by_month_of_year[mm]
			f.write('<tr><td>%d</td><td>%d (%.2f %%)</td></tr>' % (mm, commits, (100.0 * commits) / data.getTotalCommits()))
			fp.write('%d %d\n' % (mm, commits))
		fp.close()
		f.write('</table></div>')
		f.write('<img src="month_of_year.png" alt="Month of Year">')

		# Commits by year/month
		f.write(html_header(2, 'Commits by year/month'))
		f.write('<div class="vtable"><table><tr><th>Month</th><th>Commits</th><th>Lines added</th><th>Lines removed</th></tr>')
		for yymm in reversed(sorted(data.commits_by_month.keys())):
			f.write('<tr><td>%s</td><td>%d</td><td>%d</td><td>%d</td></tr>' % (yymm, data.commits_by_month.get(yymm,0), data.lines_added_by_month.get(yymm,0), data.lines_removed_by_month.get(yymm,0)))
		f.write('</table></div>')
		f.write('<img src="commits_by_year_month.png" alt="Commits by year/month">')
		fg = open(path + '/commits_by_year_month.dat', 'w')
		for yymm in sorted(data.commits_by_month.keys()):
			fg.write('%s %s\n' % (yymm, data.commits_by_month[yymm]))
		fg.close()

		# Commits by year
		f.write(html_header(2, 'Commits by Year'))
		f.write('<div class="vtable"><table><tr><th>Year</th><th>Commits (% of all)</th><th>Lines added</th><th>Lines removed</th></tr>')
		for yy in reversed(sorted(data.commits_by_year.keys())):
			f.write('<tr><td>%s</td><td>%d (%.2f%%)</td><td>%d</td><td>%d</td></tr>' % (yy, data.commits_by_year.get(yy,0), (100.0 * data.commits_by_year.get(yy,0)) / data.getTotalCommits(), data.lines_added_by_year.get(yy,0), data.lines_removed_by_year.get(yy,0)))
		f.write('</table></div>')
		f.write('<img src="commits_by_year.png" alt="Commits by Year">')
		fg = open(path + '/commits_by_year.dat', 'w')
		for yy in sorted(data.commits_by_year.keys()):
			fg.write('%d %d\n' % (yy, data.commits_by_year[yy]))
		fg.close()

		# Commits by timezone
		f.write(html_header(2, 'Commits by Timezone'))
		f.write('<table><tr>')
		f.write('<th>Timezone</th><th>Commits</th>')
		f.write('</tr>')
		max_commits_on_tz = max(data.commits_by_timezone.values())
		for i in sorted(data.commits_by_timezone.keys(), key = lambda n : int(n)):
			commits = data.commits_by_timezone[i]
			r = 127 + int((float(commits) / max_commits_on_tz) * 128)
			f.write('<tr><th>%s</th><td style="background-color: rgb(%d, 0, 0)">%d</td></tr>' % (i, r, commits))
		f.write('</table>')

		f.write('</body></html>')
		f.close()

		###
		# Authors
		f = open(path + '/authors.html', 'w')
		self.printHeader(f)

		f.write('<h1>Authors</h1>')
		self.printNav(f)

		# Authors :: List of authors
		f.write(html_header(2, 'List of Authors'))

		f.write('<table class="authors sortable" id="authors">')
		f.write('<tr><th>Author</th><th>Commits (%)</th><th>+ lines</th><th>- lines</th><th>First commit</th><th>Last commit</th><th class="unsortable">Age</th><th>Active days</th><th># by commits</th></tr>')
		for author in data.getAuthors(conf['max_authors']):
			info = data.getAuthorInfo(author)
			f.write('<tr><td>%s</td><td>%d (%.2f%%)</td><td>%d</td><td>%d</td><td>%s</td><td>%s</td><td>%s</td><td>%d</td><td>%d</td></tr>' % (author, info['commits'], info['commits_frac'], info['lines_added'], info['lines_removed'], info['date_first'], info['date_last'], info['timedelta'], len(info['active_days']), info['place_by_commits']))
		f.write('</table>')

		allauthors = data.getAuthors()
		if len(allauthors) > conf['max_authors']:
			rest = allauthors[conf['max_authors']:]
			f.write('<p class="moreauthors">These didn\'t make it to the top: %s</p>' % ', '.join(rest))

		f.write(html_header(2, 'Cumulated Added Lines of Code per Author'))
		f.write('<img src="lines_of_code_by_author.png" alt="Lines of code per Author">')
		if len(allauthors) > conf['max_authors']:
			f.write('<p class="moreauthors">Only top %d authors shown</p>' % conf['max_authors'])

		f.write(html_header(2, 'Commits per Author'))
		f.write('<img src="commits_by_author.png" alt="Commits per Author">')
		if len(allauthors) > conf['max_authors']:
			f.write('<p class="moreauthors">Only top %d authors shown</p>' % conf['max_authors'])

		fgl = open(path + '/lines_of_code_by_author.dat', 'w')
		fgc = open(path + '/commits_by_author.dat', 'w')

		lines_by_authors = {} # cumulated added lines by
		# author. to save memory,
		# changes_by_date_by_author[stamp][author] is defined
		# only at points where author commits.
		# lines_by_authors allows us to generate all the
		# points in the .dat file.

		# Don't rely on getAuthors to give the same order each
		# time. Be robust and keep the list in a variable.
		commits_by_authors = {} # cumulated added lines by

		self.authors_to_plot = data.getAuthors(conf['max_authors'])
		for author in self.authors_to_plot:
			lines_by_authors[author] = 0
			commits_by_authors[author] = 0
		for stamp in sorted(data.changes_by_date_by_author.keys()):
			fgl.write('%d' % stamp)
			fgc.write('%d' % stamp)
			for author in self.authors_to_plot:
				if author in data.changes_by_date_by_author[stamp].keys():
					lines_by_authors[author] = data.changes_by_date_by_author[stamp][author]['lines_added']
					commits_by_authors[author] = data.changes_by_date_by_author[stamp][author]['commits']
				fgl.write(' %d' % lines_by_authors[author])
				fgc.write(' %d' % commits_by_authors[author])
			fgl.write('\n')
			fgc.write('\n')
		fgl.close()
		fgc.close()

		# Authors :: Author of Month
		f.write(html_header(2, 'Author of Month'))
		f.write('<table class="sortable" id="aom">')
		f.write('<tr><th>Month</th><th>Author</th><th>Commits (%%)</th><th class="unsortable">Next top %d</th><th>Number of authors</th></tr>' % conf['authors_top'])
		for yymm in reversed(sorted(data.author_of_month.keys())):
			authordict = data.author_of_month[yymm]
			authors = getkeyssortedbyvalues(authordict)
			authors.reverse()
			commits = data.author_of_month[yymm][authors[0]]
			next = ', '.join(authors[1:conf['authors_top']+1])
			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td><td>%d</td></tr>' % (yymm, authors[0], commits, (100.0 * commits) / data.commits_by_month[yymm], data.commits_by_month[yymm], next, len(authors)))

		f.write('</table>')

		f.write(html_header(2, 'Author of Year'))
		f.write('<table class="sortable" id="aoy"><tr><th>Year</th><th>Author</th><th>Commits (%%)</th><th class="unsortable">Next top %d</th><th>Number of authors</th></tr>' % conf['authors_top'])
		for yy in reversed(sorted(data.author_of_year.keys())):
			authordict = data.author_of_year[yy]
			authors = getkeyssortedbyvalues(authordict)
			authors.reverse()
			commits = data.author_of_year[yy][authors[0]]
			next = ', '.join(authors[1:conf['authors_top']+1])
			f.write('<tr><td>%s</td><td>%s</td><td>%d (%.2f%% of %d)</td><td>%s</td><td>%d</td></tr>' % (yy, authors[0], commits, (100.0 * commits) / data.commits_by_year[yy], data.commits_by_year[yy], next, len(authors)))
		f.write('</table>')

		# Domains
		f.write(html_header(2, 'Commits by Domains'))
		domains_by_commits = getkeyssortedbyvaluekey(data.domains, 'commits')
		domains_by_commits.reverse() # most first
		f.write('<div class="vtable"><table>')
		f.write('<tr><th>Domains</th><th>Total (%)</th></tr>')
		fp = open(path + '/domains.dat', 'w')
		n = 0
		for domain in domains_by_commits:
			if n == conf['max_domains']:
				break
			commits = 0
			n += 1
			info = data.getDomainInfo(domain)
			fp.write('%s %d %d\n' % (domain, n , info['commits']))
			f.write('<tr><th>%s</th><td>%d (%.2f%%)</td></tr>' % (domain, info['commits'], (100.0 * info['commits'] / totalcommits)))
		f.write('</table></div>')
		f.write('<img src="domains.png" alt="Commits by Domains">')
		fp.close()

		f.write('</body></html>')
		f.close()

		###
		# Files
		f = open(path + '/files.html', 'w')
		self.printHeader(f)
		f.write('<h1>Files</h1>')
		self.printNav(f)

		f.write('<dl>\n')
		f.write('<dt>Total files</dt><dd>%d</dd>' % data.getTotalFiles())
		f.write('<dt>Total lines</dt><dd>%d</dd>' % data.getTotalLOC())
		try:
			f.write('<dt>Average file size</dt><dd>%.2f bytes</dd>' % (float(data.getTotalSize()) / data.getTotalFiles()))
		except ZeroDivisionError:
			pass
		f.write('</dl>\n')

		# Files :: File count by date
		f.write(html_header(2, 'File count by date'))

		# use set to get rid of duplicate/unnecessary entries
		files_by_date = set()
		for stamp in sorted(data.files_by_stamp.keys()):
			files_by_date.add('%s %d' % (datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), data.files_by_stamp[stamp]))

		fg = open(path + '/files_by_date.dat', 'w')
		for line in sorted(list(files_by_date)):
			fg.write('%s\n' % line)
		#for stamp in sorted(data.files_by_stamp.keys()):
		#	fg.write('%s %d\n' % (datetime.datetime.fromtimestamp(stamp).strftime('%Y-%m-%d'), data.files_by_stamp[stamp]))
		fg.close()
			
		f.write('<img src="files_by_date.png" alt="Files by Date">')

		#f.write('<h2>Average file size by date</h2>')

		# Files :: Extensions
		f.write(html_header(2, 'Extensions'))
		f.write('<table class="sortable" id="ext"><tr><th>Extension</th><th>Files (%)</th><th>Lines (%)</th><th>Lines/file</th></tr>')
		for ext in sorted(data.extensions.keys()):
			files = data.extensions[ext]['files']
			lines = data.extensions[ext]['lines']
			try:
				loc_percentage = (100.0 * lines) / data.getTotalLOC()
			except ZeroDivisionError:
				loc_percentage = 0
			f.write('<tr><td>%s</td><td>%d (%.2f%%)</td><td>%d (%.2f%%)</td><td>%d</td></tr>' % (ext, files, (100.0 * files) / data.getTotalFiles(), lines, loc_percentage, lines / files))
		f.write('</table>')

		f.write('</body></html>')
		f.close()

		###
		# Lines
		f = open(path + '/lines.html', 'w')
		self.printHeader(f)
		f.write('<h1>Lines</h1>')
		self.printNav(f)

		f.write('<dl>\n')
		f.write('<dt>Total lines</dt><dd>%d</dd>' % data.getTotalLOC())
		f.write('</dl>\n')

		f.write(html_header(2, 'Lines of Code'))
		f.write('<img src="lines_of_code.png" alt="Lines of Code">')

		fg = open(path + '/lines_of_code.dat', 'w')
		for stamp in sorted(data.changes_by_date.keys()):
			fg.write('%d %d\n' % (stamp, data.changes_by_date[stamp]['lines']))
		fg.close()

		f.write('</body></html>')
		f.close()

		###
		# tags.html
		f = open(path + '/tags.html', 'w')
		self.printHeader(f)
		f.write('<h1>Tags</h1>')
		self.printNav(f)

		f.write('<dl>')
		f.write('<dt>Total tags</dt><dd>%d</dd>' % len(data.tags))
		if len(data.tags) > 0:
			f.write('<dt>Average commits per tag</dt><dd>%.2f</dd>' % (1.0 * data.getTotalCommits() / len(data.tags)))
		f.write('</dl>')

		f.write('<table class="tags">')
		f.write('<tr><th>Name</th><th>Date</th><th>Commits</th><th>Authors</th></tr>')
		# sort the tags by date desc
		tags_sorted_by_date_desc = map(lambda el : el[1], reversed(sorted(map(lambda el : (el[1]['date'], el[0]), data.tags.items()))))
		for tag in tags_sorted_by_date_desc:
			authorinfo = []
			self.authors_by_commits = getkeyssortedbyvalues(data.tags[tag]['authors'])
			for i in reversed(self.authors_by_commits):
				authorinfo.append('%s (%d)' % (i, data.tags[tag]['authors'][i]))
			f.write('<tr><td>%s</td><td>%s</td><td>%d</td><td>%s</td></tr>' % (tag, data.tags[tag]['date'], data.tags[tag]['commits'], ', '.join(authorinfo)))
		f.write('</table>')

		f.write('</body></html>')
		f.close()

		self.createGraphs(path)
	
	def createGraphs(self, path):
		print 'Generating graphs...'

		# hour of day
		f = open(path + '/hour_of_day.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'hour_of_day.png'
unset key
set xrange [0.5:24.5]
set yrange [0:]
set xtics 4
set grid y
set ylabel "Commits"
plot 'hour_of_day.dat' using 1:2:(0.5) w boxes fs solid
""")
		f.close()

		# day of week
		f = open(path + '/day_of_week.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'day_of_week.png'
unset key
set xrange [0.5:7.5]
set yrange [0:]
set xtics 1
set grid y
set ylabel "Commits"
plot 'day_of_week.dat' using 1:3:(0.5):xtic(2) w boxes fs solid
""")
		f.close()

		# Domains
		f = open(path + '/domains.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'domains.png'
unset key
unset xtics
set yrange [0:]
set grid y
set ylabel "Commits"
plot 'domains.dat' using 2:3:(0.5) with boxes fs solid, '' using 2:3:1 with labels rotate by 45 offset 0,1
""")
		f.close()

		# Month of Year
		f = open(path + '/month_of_year.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'month_of_year.png'
unset key
set xrange [0.5:12.5]
set yrange [0:]
set xtics 1
set grid y
set ylabel "Commits"
plot 'month_of_year.dat' using 1:2:(0.5) w boxes fs solid
""")
		f.close()

		# commits_by_year_month
		f = open(path + '/commits_by_year_month.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'commits_by_year_month.png'
unset key
set yrange [0:]
set xdata time
set timefmt "%Y-%m"
set format x "%Y-%m"
set xtics rotate
set bmargin 5
set grid y
set ylabel "Commits"
plot 'commits_by_year_month.dat' using 1:2:(0.5) w boxes fs solid
""")
		f.close()

		# commits_by_year
		f = open(path + '/commits_by_year.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'commits_by_year.png'
unset key
set yrange [0:]
set xtics 1 rotate
set grid y
set ylabel "Commits"
set yrange [0:]
plot 'commits_by_year.dat' using 1:2:(0.5) w boxes fs solid
""")
		f.close()

		# Files by date
		f = open(path + '/files_by_date.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'files_by_date.png'
unset key
set yrange [0:]
set xdata time
set timefmt "%Y-%m-%d"
set format x "%Y-%m-%d"
set grid y
set ylabel "Files"
set xtics rotate
set ytics autofreq
set bmargin 6
plot 'files_by_date.dat' using 1:2 w steps
""")
		f.close()

		# Lines of Code
		f = open(path + '/lines_of_code.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set output 'lines_of_code.png'
unset key
set yrange [0:]
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Lines"
set xtics rotate
set bmargin 6
plot 'lines_of_code.dat' using 1:2 w lines
""")
		f.close()

		# Lines of Code Added per author
		f = open(path + '/lines_of_code_by_author.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set terminal png transparent size 640,480
set output 'lines_of_code_by_author.png'
set key left top
set yrange [0:]
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Lines"
set xtics rotate
set bmargin 6
plot """
)
		i = 1
		plots = []
		for a in self.authors_to_plot:
			i = i + 1
			author = a.replace("\"", "\\\"").replace("`", "")
			plots.append("""'lines_of_code_by_author.dat' using 1:%d title "%s" w lines""" % (i, author))
		f.write(", ".join(plots))
		f.write('\n')

		f.close()

		# Commits per author
		f = open(path + '/commits_by_author.plot', 'w')
		f.write(GNUPLOT_COMMON)
		f.write(
"""
set terminal png transparent size 640,480
set output 'commits_by_author.png'
set key left top
set yrange [0:]
set xdata time
set timefmt "%s"
set format x "%Y-%m-%d"
set grid y
set ylabel "Commits"
set xtics rotate
set bmargin 6
plot """
)
		i = 1
		plots = []
		for a in self.authors_to_plot:
			i = i + 1
			author = a.replace("\"", "\\\"").replace("`", "")
			plots.append("""'commits_by_author.dat' using 1:%d title "%s" w lines""" % (i, author))
		f.write(", ".join(plots))
		f.write('\n')

		f.close()

		os.chdir(path)
		files = glob.glob(path + '/*.plot')
		for f in files:
			out = getpipeoutput([gnuplot_cmd + ' "%s"' % f])
			if len(out) > 0:
				print out

	def printHeader(self, f, title = ''):
		f.write(
"""<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>GitStats - %s</title>
	<link rel="stylesheet" href="%s" type="text/css">
	<meta name="generator" content="GitStats %s">
	<script type="text/javascript" src="sortable.js"></script>
</head>
<body>
""" % (self.title, conf['style'], getversion()))

	def printNav(self, f):
		f.write("""
<div class="nav">
<ul>
<li><a href="index.html">General</a></li>
<li><a href="activity.html">Activity</a></li>
<li><a href="authors.html">Authors</a></li>
<li><a href="files.html">Files</a></li>
<li><a href="lines.html">Lines</a></li>
<li><a href="tags.html">Tags</a></li>
</ul>
</div>
""")
		
def usage():
	print """
Usage: gitstats [options] <gitpath..> <outputpath>

Options:
-c key=value     Override configuration value

Default config values:
%s

Please see the manual page for more details.
""" % conf


class GitStats:
	def run(self, args_orig):
		optlist, args = getopt.getopt(args_orig, 'hc:', ["help"])
		for o,v in optlist:
			if o == '-c':
				key, value = v.split('=', 1)
				if key not in conf:
					raise KeyError('no such key "%s" in config' % key)
				if isinstance(conf[key], int):
					conf[key] = int(value)
				else:
					conf[key] = value
			elif o in ('-h', '--help'):
				usage()
				sys.exit()

		if len(args) < 2:
			usage()
			sys.exit(0)

		outputpath = os.path.abspath(args[-1])
		rundir = os.getcwd()

		try:
			os.makedirs(outputpath)
		except OSError:
			pass
		if not os.path.isdir(outputpath):
			print 'FATAL: Output path is not a directory or does not exist'
			sys.exit(1)

		if not getgnuplotversion():
			print 'gnuplot not found'
			sys.exit(1)

		print 'Output path: %s' % outputpath
		cachefile = os.path.join(outputpath, 'gitstats.cache')

		data = GitDataCollector()
		data.loadCache(cachefile)

		for gitpath in args[0:-1]:
			print 'Git path: %s' % gitpath

			prevdir = os.getcwd()
			os.chdir(gitpath)

			print 'Collecting data...'
			data.collect(gitpath)

			os.chdir(prevdir)

		print 'Refining data...'
		data.saveCache(cachefile)
		data.refine()

		os.chdir(rundir)

		print 'Generating report...'
		report = HTMLReportCreator()
		report.create(data, outputpath)

		time_end = time.time()
		exectime_internal = time_end - time_start
		print 'Execution time %.5f secs, %.5f secs (%.2f %%) in external commands)' % (exectime_internal, exectime_external, (100.0 * exectime_external) / exectime_internal)
		if sys.stdin.isatty():
			print 'You may now run:'
			print
			print '   sensible-browser \'%s\'' % os.path.join(outputpath, 'index.html').replace("'", "'\\''")
			print

if __name__=='__main__':
	g = GitStats()
	g.run(sys.argv[1:])