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
|
#
# = fileutils.rb
#
# Copyright (c) 2000-2005 Minero Aoki <aamine@loveruby.net>
#
# This program is free software.
# You can distribute/modify this program under the same terms of ruby.
#
# == module FileUtils
#
# Namespace for several file utility methods for copying, moving, removing, etc.
#
# === Module Functions
#
# cd(dir, options)
# cd(dir, options) {|dir| .... }
# pwd()
# mkdir(dir, options)
# mkdir(list, options)
# mkdir_p(dir, options)
# mkdir_p(list, options)
# rmdir(dir, options)
# rmdir(list, options)
# ln(old, new, options)
# ln(list, destdir, options)
# ln_s(old, new, options)
# ln_s(list, destdir, options)
# ln_sf(src, dest, options)
# cp(src, dest, options)
# cp(list, dir, options)
# cp_r(src, dest, options)
# cp_r(list, dir, options)
# mv(src, dest, options)
# mv(list, dir, options)
# rm(list, options)
# rm_r(list, options)
# rm_rf(list, options)
# install(src, dest, mode = <src's>, options)
# chmod(mode, list, options)
# chmod_R(mode, list, options)
# chown(user, group, list, options)
# chown_R(user, group, list, options)
# touch(list, options)
#
# The <tt>options</tt> parameter is a hash of options, taken from the list
# <tt>:force</tt>, <tt>:noop</tt>, <tt>:preserve</tt>, and <tt>:verbose</tt>.
# <tt>:noop</tt> means that no changes are made. The other two are obvious.
# Each method documents the options that it honours.
#
# All methods that have the concept of a "source" file or directory can take
# either one file or a list of files in that argument. See the method
# documentation for examples.
#
# There are some `low level' methods, which do not accept any option:
#
# copy_entry(src, dest, preserve = false, dereference = false)
# copy_file(src, dest, preserve = false, dereference = true)
# copy_stream(srcstream, deststream)
# remove_entry(path, force = false)
# remove_entry_secure(path, force = false)
# remove_file(path, force = false)
# compare_file(path_a, path_b)
# compare_stream(stream_a, stream_b)
# uptodate?(file, cmp_list)
#
# == module FileUtils::Verbose
#
# This module has all methods of FileUtils module, but it outputs messages
# before acting. This equates to passing the <tt>:verbose</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::NoWrite
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> flag to methods
# in FileUtils.
#
# == module FileUtils::DryRun
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> and
# <tt>:verbose</tt> flags to methods in FileUtils.
#
module FileUtils
# All methods are module_function.
# This hash table holds command options.
OPT_TABLE = {} #:nodoc: internal use only
#
# Options: (none)
#
# Returns the name of the current directory.
#
def pwd
Dir.pwd
end
alias getwd pwd
#
# Options: verbose
#
# Changes the current directory to the directory +dir+.
#
# If this method is called with block, resumes to the old
# working directory after the block execution finished.
#
# FileUtils.cd('/', :verbose => true) # chdir and report it
#
def cd(dir, options = {}, &block) # :yield: dir
fu_check_options options, :verbose
fu_output_message "cd #{dir}" if options[:verbose]
Dir.chdir(dir, &block) unless options[:noop]
fu_output_message 'cd -' if options[:verbose] and block
end
alias chdir cd
OPT_TABLE['cd'] =
OPT_TABLE['chdir'] = %w( verbose )
#
# Options: (none)
#
# Returns true if +newer+ is newer than all +old_list+.
# Non-existent files are older than any file.
#
# FileUtils.uptodate?('hello.o', %w(hello.c hello.h)) or \
# system 'make hello.o'
#
def uptodate?(new, old_list, options = nil)
raise ArgumentError, 'uptodate? does not accept any option' if options
return false unless File.exist?(new)
new_time = File.mtime(new)
old_list.each do |old|
if File.exist?(old)
return false unless new_time > File.mtime(old)
end
end
true
end
#
# Options: mode noop verbose
#
# Creates one or more directories.
#
# FileUtils.mkdir 'test'
# FileUtils.mkdir %w( tmp data )
# FileUtils.mkdir 'notexist', :noop => true # Does not really create.
# FileUtils.mkdir 'tmp', :mode => 0700
#
def mkdir(list, options = {})
fu_check_options options, :mode, :noop, :verbose
list = fu_list(list)
fu_output_message "mkdir #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |dir|
fu_mkdir dir, options[:mode]
end
end
OPT_TABLE['mkdir'] = %w( noop verbose mode )
#
# Options: mode noop verbose
#
# Creates a directory and all its parent directories.
# For example,
#
# FileUtils.mkdir_p '/usr/local/lib/ruby'
#
# causes to make following directories, if it does not exist.
# * /usr
# * /usr/local
# * /usr/local/lib
# * /usr/local/lib/ruby
#
# You can pass several directories at a time in a list.
#
def mkdir_p(list, options = {})
fu_check_options options, :mode, :noop, :verbose
list = fu_list(list)
fu_output_message "mkdir -p #{options[:mode] ? ('-m %03o ' % options[:mode]) : ''}#{list.join ' '}" if options[:verbose]
return *list if options[:noop]
list.map {|path| path.sub(%r</\z>, '') }.each do |path|
# optimize for the most common case
begin
fu_mkdir path, options[:mode]
next
rescue SystemCallError
next if File.directory?(path)
end
stack = []
until path == stack.last # dirname("/")=="/", dirname("C:/")=="C:/"
stack.push path
path = File.dirname(path)
end
stack.reverse_each do |path|
begin
fu_mkdir path, options[:mode]
rescue SystemCallError => err
raise unless File.directory?(path)
end
end
end
return *list
end
alias mkpath mkdir_p
alias makedirs mkdir_p
OPT_TABLE['mkdir_p'] =
OPT_TABLE['mkpath'] =
OPT_TABLE['makedirs'] = %w( noop verbose )
def fu_mkdir(path, mode)
path = path.sub(%r</\z>, '')
if mode
Dir.mkdir path, mode
File.chmod mode, path
else
Dir.mkdir path
end
end
private :fu_mkdir
#
# Options: noop, verbose
#
# Removes one or more directories.
#
# FileUtils.rmdir 'somedir'
# FileUtils.rmdir %w(somedir anydir otherdir)
# # Does not really remove directory; outputs message.
# FileUtils.rmdir 'somedir', :verbose => true, :noop => true
#
def rmdir(list, options = {})
fu_check_options options, :noop, :verbose
list = fu_list(list)
fu_output_message "rmdir #{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |dir|
Dir.rmdir dir.sub(%r</\z>, '')
end
end
OPT_TABLE['rmdir'] = %w( noop verbose )
#
# Options: force noop verbose
#
# <b><tt>ln(old, new, options = {})</tt></b>
#
# Creates a hard link +new+ which points to +old+.
# If +new+ already exists and it is a directory, creates a symbolic link +new/old+.
# If +new+ already exists and it is not a directory, raises Errno::EEXIST.
# But if :force option is set, overwrite +new+.
#
# FileUtils.ln 'gcc', 'cc', :verbose => true
# FileUtils.ln '/usr/bin/emacs21', '/usr/bin/emacs'
#
# <b><tt>ln(list, destdir, options = {})</tt></b>
#
# Creates several hard links in a directory, with each one pointing to the
# item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# include FileUtils
# cd '/sbin'
# FileUtils.ln %w(cp mv mkdir), '/bin' # Now /sbin/cp and /bin/cp are linked.
#
def ln(src, dest, options = {})
fu_check_options options, :force, :noop, :verbose
fu_output_message "ln#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if options[:force]
File.link s, d
end
end
alias link ln
OPT_TABLE['ln'] =
OPT_TABLE['link'] = %w( noop verbose force )
#
# Options: force noop verbose
#
# <b><tt>ln_s(old, new, options = {})</tt></b>
#
# Creates a symbolic link +new+ which points to +old+. If +new+ already
# exists and it is a directory, creates a symbolic link +new/old+. If +new+
# already exists and it is not a directory, raises Errno::EEXIST. But if
# :force option is set, overwrite +new+.
#
# FileUtils.ln_s '/usr/bin/ruby', '/usr/local/bin/ruby'
# FileUtils.ln_s 'verylongsourcefilename.c', 'c', :force => true
#
# <b><tt>ln_s(list, destdir, options = {})</tt></b>
#
# Creates several symbolic links in a directory, with each one pointing to the
# item in +list+. If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# If +destdir+ is not a directory, raises Errno::ENOTDIR.
#
# FileUtils.ln_s Dir.glob('bin/*.rb'), '/home/aamine/bin'
#
def ln_s(src, dest, options = {})
fu_check_options options, :force, :noop, :verbose
fu_output_message "ln -s#{options[:force] ? 'f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest0(src, dest) do |s,d|
remove_file d, true if options[:force]
File.symlink s, d
end
end
alias symlink ln_s
OPT_TABLE['ln_s'] =
OPT_TABLE['symlink'] = %w( noop verbose force )
#
# Options: noop verbose
#
# Same as
# #ln_s(src, dest, :force)
#
def ln_sf(src, dest, options = {})
fu_check_options options, :noop, :verbose
options = options.dup
options[:force] = true
ln_s src, dest, options
end
OPT_TABLE['ln_sf'] = %w( noop verbose )
#
# Options: preserve noop verbose
#
# Copies a file content +src+ to +dest+. If +dest+ is a directory,
# copies +src+ to +dest/src+.
#
# If +src+ is a list of files, then +dest+ must be a directory.
#
# FileUtils.cp 'eval.c', 'eval.c.org'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6'
# FileUtils.cp %w(cgi.rb complex.rb date.rb), '/usr/lib/ruby/1.6', :verbose => true
# FileUtils.cp 'symlink', 'dest' # copy content, "dest" is not a symlink
#
def cp(src, dest, options = {})
fu_check_options options, :preserve, :noop, :verbose
fu_output_message "cp#{options[:preserve] ? ' -p' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
copy_file s, d, options[:preserve]
end
end
alias copy cp
OPT_TABLE['cp'] =
OPT_TABLE['copy'] = %w( noop verbose preserve )
#
# Options: preserve noop verbose dereference_root
#
# Copies +src+ to +dest+. If +src+ is a directory, this method copies
# all its contents recursively. If +dest+ is a directory, copies
# +src+ to +dest/src+.
#
# +src+ can be a list of files.
#
# # Installing ruby library "mylib" under the site_ruby
# FileUtils.rm_r site_ruby + '/mylib', :force
# FileUtils.cp_r 'lib/', site_ruby + '/mylib'
#
# # Examples of copying several files to target directory.
# FileUtils.cp_r %w(mail.rb field.rb debug/), site_ruby + '/tmail'
# FileUtils.cp_r Dir.glob('*.rb'), '/home/aamine/lib/ruby', :noop => true, :verbose => true
#
# # If you want to copy all contents of a directory instead of the
# # directory itself, c.f. src/x -> dest/x, src/y -> dest/y,
# # use following code.
# FileUtils.cp_r 'src/.', 'dest' # cp_r('src', 'dest') makes src/dest,
# # but this doesn't.
#
def cp_r(src, dest, options = {})
fu_check_options options, :preserve, :noop, :verbose, :dereference_root
fu_output_message "cp -r#{options[:preserve] ? 'p' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
copy_entry s, d, options[:preserve], options[:dereference_root]
end
end
OPT_TABLE['cp_r'] = %w( noop verbose preserve dereference_root )
#
# Copies a file system entry +src+ to +dest+.
# If +src+ is a directory, this method copies its contents recursively.
# This method preserves file types, c.f. symlink, directory...
# (FIFO, device files and etc. are not supported yet)
#
# Both of +src+ and +dest+ must be a path name.
# +src+ must exist, +dest+ must not exist.
#
# If +preserve+ is true, this method preserves owner, group, permissions
# and modified time.
#
# If +dereference_root+ is true, this method dereference tree root.
#
def copy_entry(src, dest, preserve = false, dereference_root = false)
Entry_.new(src, nil, dereference_root).traverse do |ent|
destent = Entry_.new(dest, ent.rel, false)
ent.copy destent.path
ent.copy_metadata destent.path if preserve
end
end
#
# Copies file contents of +src+ to +dest+.
# Both of +src+ and +dest+ must be a path name.
#
def copy_file(src, dest, preserve = false, dereference = true)
ent = Entry_.new(src, nil, dereference)
ent.copy_file dest
ent.copy_metadata dest if preserve
end
#
# Copies stream +src+ to +dest+.
# +src+ must respond to #read(n) and
# +dest+ must respond to #write(str).
#
def copy_stream(src, dest)
fu_copy_stream0 src, dest, fu_stream_blksize(src, dest)
end
#
# Options: force noop verbose
#
# Moves file(s) +src+ to +dest+. If +file+ and +dest+ exist on the different
# disk partition, the file is copied instead.
#
# FileUtils.mv 'badname.rb', 'goodname.rb'
# FileUtils.mv 'stuff.rb', '/notexist/lib/ruby', :force => true # no error
#
# FileUtils.mv %w(junk.txt dust.txt), '/home/aamine/.trash/'
# FileUtils.mv Dir.glob('test*.rb'), 'test', :noop => true, :verbose => true
#
def mv(src, dest, options = {})
fu_check_options options, :force, :noop, :verbose
fu_output_message "mv#{options[:force] ? ' -f' : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
destent = Entry_.new(d, nil, true)
begin
if destent.exist?
if destent.directory?
raise Errno::EEXIST, dest
else
destent.remove_file if rename_cannot_overwrite_file?
end
end
begin
File.rename s, d
rescue Errno::EXDEV
copy_entry s, d, true
end
rescue SystemCallError
raise unless options[:force]
end
end
end
alias move mv
OPT_TABLE['mv'] =
OPT_TABLE['move'] = %w( noop verbose force )
def rename_cannot_overwrite_file? #:nodoc:
/djgpp|cygwin|mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM
end
private :rename_cannot_overwrite_file?
#
# Options: force noop verbose
#
# Remove file(s) specified in +list+. This method cannot remove directories.
# All StandardErrors are ignored when the :force option is set.
#
# FileUtils.rm %w( junk.txt dust.txt )
# FileUtils.rm Dir.glob('*.so')
# FileUtils.rm 'NotExistFile', :force => true # never raises exception
#
def rm(list, options = {})
fu_check_options options, :force, :noop, :verbose
list = fu_list(list)
fu_output_message "rm#{options[:force] ? ' -f' : ''} #{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |path|
remove_file path, options[:force]
end
end
alias remove rm
OPT_TABLE['rm'] =
OPT_TABLE['remove'] = %w( noop verbose force )
#
# Options: noop verbose
#
# Equivalent to
#
# #rm(list, :force => true)
#
def rm_f(list, options = {})
fu_check_options options, :noop, :verbose
options = options.dup
options[:force] = true
rm list, options
end
alias safe_unlink rm_f
OPT_TABLE['rm_f'] =
OPT_TABLE['safe_unlink'] = %w( noop verbose )
#
# Options: force noop verbose secure
#
# remove files +list+[0] +list+[1]... If +list+[n] is a directory,
# removes its all contents recursively. This method ignores
# StandardError when :force option is set.
#
# FileUtils.rm_r Dir.glob('/tmp/*')
# FileUtils.rm_r '/', :force => true # :-)
#
# WARNING: This method causes local vulnerability
# if one of parent directories or removing directory tree are world
# writable (including /tmp, whose permission is 1777), and the current
# process has strong privilege such as Unix super user (root), and the
# system has symbolic link. For secure removing, read the documentation
# of #remove_entry_secure carefully, and set :secure option to true.
# Default is :secure=>false.
#
# NOTE: This method calls #remove_entry_secure if :secure option is set.
# See also #remove_entry_secure.
#
def rm_r(list, options = {})
fu_check_options options, :force, :noop, :verbose, :secure
# options[:secure] = true unless options.key?(:secure)
list = fu_list(list)
fu_output_message "rm -r#{options[:force] ? 'f' : ''} #{list.join ' '}" if options[:verbose]
return if options[:noop]
list.each do |path|
if options[:secure]
remove_entry_secure path, options[:force]
else
remove_entry path, options[:force]
end
end
end
OPT_TABLE['rm_r'] = %w( noop verbose force secure )
#
# Options: noop verbose secure
#
# Equivalent to
#
# #rm_r(list, :force => true)
#
# WARNING: This method causes local vulnerability.
# Read the documentation of #rm_r first.
#
def rm_rf(list, options = {})
fu_check_options options, :noop, :verbose, :secure
options = options.dup
options[:force] = true
rm_r list, options
end
alias rmtree rm_rf
OPT_TABLE['rm_rf'] =
OPT_TABLE['rmtree'] = %w( noop verbose secure )
#
# This method removes a file system entry +path+. +path+ shall be a
# regular file, a directory, or something. If +path+ is a directory,
# remove it recursively. This method is required to avoid TOCTTOU
# (time-of-check-to-time-of-use) local security vulnerability of #rm_r.
# #rm_r causes security hole when and only when:
#
# * Parent directory is world writable (including /tmp).
# * Removing directory tree includes world writable directory.
# * The system has symbolic link.
#
# To avoid this security hole, this method applies special preprocess.
# If +path+ is a directory, this method chown(2) and chmod(2) all
# removing directories. This requires the current process is the
# owner of the removing whole directory tree, or is the super user (root).
#
# WARNING: You must ensure that *ALL* parent directories are not
# world writable. Otherwise this method does not work.
# Only exception is temporary directory like /tmp and /var/tmp,
# whose permission is 1777.
#
# WARNING: Only the owner of the removing directory tree, or Unix super
# user (root) should invoke this method. Otherwise this method does not
# work.
#
# WARNING: remove_entry_secure uses chdir(2), this method is not
# multi-thread safe, nor reentrant.
#
# For details of this security vulnerability, see Perl's case:
#
# http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0448
# http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0452
#
# For fileutils.rb, this vulnerability is reported in [ruby-dev:26100].
#
def remove_entry_secure(path, force = false)
fullpath = File.expand_path(path)
st = File.stat(File.dirname(fullpath))
unless st.world_writable?
remove_entry path, force
return
end
unless st.sticky?
raise ArgumentError, "parent directory is insecure: #{path}"
end
euid = Process.euid
prevcwd = Dir.getwd
begin
begin
Dir.chdir(fullpath)
rescue SystemCallError
# seems a file
File.unlink fullpath
return
end
unless fu_stat_identical_entry?(File.lstat(fullpath), File.stat('.'))
# seems TOC-to-TOU attack
File.unlink fullpath
return
end
File.chown euid, nil, '.'
File.chmod 0700, '.'
ensure
Dir.chdir prevcwd
end
# ---- tree root is frozen ----
root = Entry_.new(path)
root.preorder_traverse do |ent|
if ent.directory?
ent.chown euid, nil
ent.chmod 0700
end
end
root.postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
def fu_stat_identical_entry?(a, b)
a.dev == b.dev and a.ino == b.ino
end
#
# This method removes a file system entry +path+.
# +path+ might be a regular file, a directory, or something.
# If +path+ is a directory, remove it recursively.
#
# See also #remove_entry_secure.
#
def remove_entry(path, force = false)
Entry_.new(path).postorder_traverse do |ent|
begin
ent.remove
rescue
raise unless force
end
end
rescue
raise unless force
end
#
# Removes a file +path+.
# This method ignores StandardError if +force+ is true.
#
def remove_file(path, force = false)
Entry_.new(path).remove_file
rescue
raise unless force
end
#
# Removes a directory +dir+ and its contents recursively.
# This method ignores StandardError if +force+ is true.
#
def remove_dir(path, force = false)
remove_entry path, force # FIXME?? check if it is a directory
end
#
# Returns true if the contents of a file A and a file B are identical.
#
# FileUtils.compare_file('somefile', 'somefile') #=> true
# FileUtils.compare_file('/bin/cp', '/bin/mv') #=> maybe false
#
def compare_file(a, b)
return false unless File.size(a) == File.size(b)
File.open(a, 'rb') {|fa|
File.open(b, 'rb') {|fb|
return compare_stream(fa, fb)
}
}
end
alias identical? compare_file
alias cmp compare_file
#
# Returns true if the contents of a stream +a+ and +b+ are identical.
#
def compare_stream(a, b)
bsize = fu_stream_blksize(a, b)
sa = sb = nil
while sa == sb
sa = a.read(bsize)
sb = b.read(bsize)
unless sa and sb
if sa.nil? and sb.nil?
return true
end
end
end
false
end
#
# Options: mode noop verbose
#
# If +src+ is not same as +dest+, copies it and changes the permission
# mode to +mode+. If +dest+ is a directory, destination is +dest+/+src+.
#
# FileUtils.install 'ruby', '/usr/local/bin/ruby', :mode => 0755, :verbose => true
# FileUtils.install 'lib.rb', '/usr/local/lib/ruby/site_ruby', :verbose => true
#
def install(src, dest, options = {})
fu_check_options options, :mode, :preserve, :noop, :verbose
fu_output_message "install -c#{options[:preserve] && ' -p'}#{options[:mode] ? (' -m 0%o' % options[:mode]) : ''} #{[src,dest].flatten.join ' '}" if options[:verbose]
return if options[:noop]
fu_each_src_dest(src, dest) do |s, d|
unless File.exist?(d) and compare_file(s, d)
remove_file d, true
st = File.stat(s) if options[:preserve]
copy_file s, d
File.utime st.atime, st.mtime, d if options[:preserve]
File.chmod options[:mode], d if options[:mode]
end
end
end
OPT_TABLE['install'] = %w( noop verbose preserve mode )
#
# Options: noop verbose
#
# Changes permission bits on the named files (in +list+) to the bit pattern
# represented by +mode+.
#
# FileUtils.chmod 0755, 'somecommand'
# FileUtils.chmod 0644, %w(my.rb your.rb his.rb her.rb)
# FileUtils.chmod 0755, '/usr/bin/ruby', :verbose => true
#
def chmod(mode, list, options = {})
fu_check_options options, :noop, :verbose
list = fu_list(list)
fu_output_message sprintf('chmod %o %s', mode, list.join(' ')) if options[:verbose]
return if options[:noop]
list.each do |path|
Entry_.new(path).chmod mode
end
end
OPT_TABLE['chmod'] = %w( noop verbose )
#
# Options: noop verbose force
#
# Changes permission bits on the named files (in +list+)
# to the bit pattern represented by +mode+.
#
# FileUtils.chmod_R 0700, "/tmp/app.#{$$}"
#
def chmod_R(mode, list, options = {})
fu_check_options options, :noop, :verbose, :force
list = fu_list(list)
fu_output_message sprintf('chmod -R%s %o %s',
(options[:force] ? 'f' : ''),
mode, list.join(' ')) if options[:verbose]
return if options[:noop]
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chmod mode
rescue
raise unless options[:force]
end
end
end
end
OPT_TABLE['chmod_R'] = %w( noop verbose )
#
# Options: noop verbose
#
# Changes owner and group on the named files (in +list+)
# to the user +user+ and the group +group+. +user+ and +group+
# may be an ID (Integer/String) or a name (String).
# If +user+ or +group+ is nil, this method does not change
# the attribute.
#
# FileUtils.chown 'root', 'staff', '/usr/local/bin/ruby'
# FileUtils.chown nil, 'bin', Dir.glob('/usr/bin/*'), :verbose => true
#
def chown(user, group, list, options = {})
fu_check_options options, :noop, :verbose
list = fu_list(list)
fu_output_message sprintf('chown %s%s',
[user,group].compact.join(':') + ' ',
list.join(' ')) if options[:verbose]
return if options[:noop]
uid = fu_get_uid(user)
gid = fu_get_gid(group)
list.each do |path|
Entry_.new(path).chown uid, gid
end
end
OPT_TABLE['chown'] = %w( noop verbose )
#
# Options: noop verbose force
#
# Changes owner and group on the named files (in +list+)
# to the user +user+ and the group +group+ recursively.
# +user+ and +group+ may be an ID (Integer/String) or
# a name (String). If +user+ or +group+ is nil, this
# method does not change the attribute.
#
# FileUtils.chown_R 'www', 'www', '/var/www/htdocs'
# FileUtils.chown_R 'cvs', 'cvs', '/var/cvs', :verbose => true
#
def chown_R(user, group, list, options = {})
fu_check_options options, :noop, :verbose, :force
list = fu_list(list)
fu_output_message sprintf('chown -R%s %s%s',
(options[:force] ? 'f' : ''),
[user,group].compact.join(':') + ' ',
list.join(' ')) if options[:verbose]
return if options[:noop]
uid = fu_get_uid(user)
gid = fu_get_gid(group)
return unless uid or gid
list.each do |root|
Entry_.new(root).traverse do |ent|
begin
ent.chown uid, gid
rescue
raise unless options[:force]
end
end
end
end
OPT_TABLE['chown_R'] = %w( noop verbose )
begin
require 'etc'
def fu_get_uid(user) #:nodoc:
return nil unless user
user = user.to_s
if /\A\d+\z/ =~ user
then user.to_i
else Etc.getpwnam(user).uid
end
end
private :fu_get_uid
def fu_get_gid(group) #:nodoc:
return nil unless group
if /\A\d+\z/ =~ group
then group.to_i
else Etc.getgrnam(group).gid
end
end
private :fu_get_gid
rescue LoadError
# need Win32 support???
def fu_get_uid(user) #:nodoc:
user # FIXME
end
def fu_get_gid(group) #:nodoc:
group # FIXME
end
end
#
# Options: noop verbose
#
# Updates modification time (mtime) and access time (atime) of file(s) in
# +list+. Files are created if they don't exist.
#
# FileUtils.touch 'timestamp'
# FileUtils.touch Dir.glob('*.c'); system 'make'
#
def touch(list, options = {})
fu_check_options options, :noop, :verbose
list = fu_list(list)
fu_output_message "touch #{list.join ' '}" if options[:verbose]
return if options[:noop]
t = Time.now
list.each do |path|
begin
File.utime(t, t, path)
rescue Errno::ENOENT
File.open(path, 'a') {
;
}
end
end
end
OPT_TABLE['touch'] = %w( noop verbose )
private
module StreamUtils_
private
def fu_windows?
/mswin|mingw|bccwin|wince|emx/ =~ RUBY_PLATFORM
end
def fu_copy_stream0(src, dest, blksize) #:nodoc:
# FIXME: readpartial?
while s = src.read(blksize)
dest.write s
end
end
def fu_stream_blksize(*streams)
streams.each do |s|
next unless s.respond_to?(:stat)
size = fu_blksize(s.stat)
return size if size
end
fu_default_blksize()
end
def fu_blksize(st)
s = st.blksize
return nil unless s
return nil if s == 0
s
end
def fu_default_blksize
1024
end
end
include StreamUtils_
class Entry_ #:nodoc: internal use only
include StreamUtils_
def initialize(a, b = nil, deref = false)
@prefix = @rel = @path = nil
if b
@prefix = a
@rel = b
else
@path = a
end
@deref = deref
@stat = nil
@lstat = nil
end
def inspect
"\#<#{self.class} #{path()}>"
end
def path
if @path
@path
else
join(@prefix, @rel)
end
end
def prefix
@prefix || @path
end
def rel
@rel
end
def dereference?
@deref
end
def exist?
lstat! ? true : false
end
def file?
s = lstat!
s and s.file?
end
def directory?
s = lstat!
s and s.directory?
end
def symlink?
s = lstat!
s and s.symlink?
end
def chardev?
s = lstat!
s and s.chardev?
end
def blockdev?
s = lstat!
s and s.blockdev?
end
def socket?
s = lstat!
s and s.socket?
end
def pipe?
s = lstat!
s and s.pipe?
end
S_IF_DOOR = 0xD000
def door?
s = lstat!
s and (s.mode & 0xF000 == S_IF_DOOR)
end
def entries
Dir.entries(path())\
.reject {|n| n == '.' or n == '..' }\
.map {|n| Entry_.new(prefix(), join(rel(), n.untaint)) }
end
def stat
return @stat if @stat
if lstat() and lstat().symlink?
@stat = File.stat(path())
else
@stat = lstat()
end
@stat
end
def stat!
return @stat if @stat
if lstat! and lstat!.symlink?
@stat = File.stat(path())
else
@stat = lstat!
end
@stat
rescue SystemCallError
nil
end
def lstat
if dereference?
@lstat ||= File.stat(path())
else
@lstat ||= File.lstat(path())
end
end
def lstat!
lstat()
rescue SystemCallError
nil
end
def chmod(mode)
if symlink?
File.lchmod mode, path() if have_lchmod?
else
File.chmod mode, path()
end
end
def chown(uid, gid)
if symlink?
File.lchown uid, gid, path() if have_lchown?
else
File.chown uid, gid, path()
end
end
def copy(dest)
case
when file?
copy_file dest
when directory?
begin
Dir.mkdir dest
rescue
raise unless File.directory?(dest)
end
when symlink?
File.symlink File.readlink(path()), dest
when chardev?
raise "cannot handle device file" unless File.respond_to?(:mknod)
mknod dest, ?c, 0666, lstat().rdev
when blockdev?
raise "cannot handle device file" unless File.respond_to?(:mknod)
mknod dest, ?b, 0666, lstat().rdev
when socket?
raise "cannot handle socket" unless File.respond_to?(:mknod)
mknod dest, nil, lstat().mode, 0
when pipe?
raise "cannot handle FIFO" unless File.respond_to?(:mkfifo)
mkfifo dest, 0666
when door?
raise "cannot handle door: #{path()}"
else
raise "unknown file type: #{path()}"
end
end
def copy_file(dest)
st = stat()
File.open(path(), 'rb') {|r|
File.open(dest, 'wb', st.mode) {|w|
fu_copy_stream0 r, w, (fu_blksize(st) || fu_default_blksize())
}
}
end
def copy_metadata(path)
st = lstat()
File.utime st.atime, st.mtime, path
begin
File.chown st.uid, st.gid, path
rescue Errno::EPERM
# clear setuid/setgid
File.chmod st.mode & 01777, path
else
File.chmod st.mode, path
end
end
def remove
if directory?
remove_dir1
else
remove_file
end
end
def remove_dir1
platform_support {
Dir.rmdir path().sub(%r</\z>, '')
}
end
def remove_file
platform_support {
File.unlink path
}
end
def platform_support
return yield unless fu_windows?
first_time_p = true
begin
yield
rescue Errno::ENOENT
raise
rescue => err
if first_time_p
first_time_p = false
begin
File.chmod 0700, path() # Windows does not have symlink
retry
rescue SystemCallError
end
end
raise err
end
end
def preorder_traverse
stack = [self]
while ent = stack.pop
yield ent
stack.concat ent.entries.reverse if ent.directory?
end
end
alias traverse preorder_traverse
def postorder_traverse
if directory?
entries().each do |ent|
ent.postorder_traverse do |e|
yield e
end
end
end
yield self
end
private
$fileutils_rb_have_lchmod = nil
def have_lchmod?
# This is not MT-safe, but it does not matter.
if $fileutils_rb_have_lchmod == nil
$fileutils_rb_have_lchmod = check_have_lchmod?
end
$fileutils_rb_have_lchmod
end
def check_have_lchmod?
return false unless File.respond_to?(:lchmod)
File.lchmod 0
return true
rescue NotImplementedError
return false
end
$fileutils_rb_have_lchown = nil
def have_lchown?
# This is not MT-safe, but it does not matter.
if $fileutils_rb_have_lchown == nil
$fileutils_rb_have_lchown = check_have_lchown?
end
$fileutils_rb_have_lchown
end
def check_have_lchown?
return false unless File.respond_to?(:lchown)
File.lchown nil, nil
return true
rescue NotImplementedError
return false
end
def join(dir, base)
return File.path(dir) if not base or base == '.'
return File.path(base) if not dir or dir == '.'
File.join(dir, base)
end
end # class Entry_
def fu_list(arg)
[arg].flatten.map {|path| File.path(path) }
end
def fu_each_src_dest(src, dest)
fu_each_src_dest0(src, dest) do |s, d|
raise ArgumentError, "same file: #{s} and #{d}" if fu_same?(s, d)
yield s, d
end
end
def fu_each_src_dest0(src, dest)
if src.is_a?(Array)
src.each do |s|
s = File.path(s)
yield s, File.join(dest, File.basename(s))
end
else
src = File.path(src)
if File.directory?(dest)
yield src, File.join(dest, File.basename(src))
else
yield src, File.path(dest)
end
end
end
def fu_same?(a, b)
if fu_have_st_ino?
st1 = File.stat(a)
st2 = File.stat(b)
st1.dev == st2.dev and st1.ino == st2.ino
else
File.expand_path(a) == File.expand_path(b)
end
rescue Errno::ENOENT
return false
end
def fu_have_st_ino?
not fu_windows?
end
def fu_check_options(options, *optdecl)
h = options.dup
optdecl.each do |name|
h.delete name
end
raise ArgumentError, "no such option: #{h.keys.join(' ')}" unless h.empty?
end
def fu_update_option(args, new)
if args.last.is_a?(Hash)
args[-1] = args.last.dup.update(new)
else
args.push new
end
args
end
@fileutils_output = $stderr
@fileutils_label = ''
def fu_output_message(msg)
@fileutils_output ||= $stderr
@fileutils_label ||= ''
@fileutils_output.puts @fileutils_label + msg
end
# All Methods are public instance method and are public class method.
extend self
#
# Returns an Array of method names which have any options.
#
# p FileUtils.commands #=> ["chmod", "cp", "cp_r", "install", ...]
#
def FileUtils.commands
OPT_TABLE.keys
end
#
# Returns an Array of option names.
#
# p FileUtils.options #=> ["noop", "force", "verbose", "preserve", "mode"]
#
def FileUtils.options
OPT_TABLE.values.flatten.uniq
end
#
# Returns true if the method +mid+ have an option +opt+.
#
# p FileUtils.have_option?(:cp, :noop) #=> true
# p FileUtils.have_option?(:rm, :force) #=> true
# p FileUtils.have_option?(:rm, :perserve) #=> false
#
def FileUtils.have_option?(mid, opt)
li = OPT_TABLE[mid.to_s] or raise ArgumentError, "no such method: #{mid}"
li.include?(opt.to_s)
end
#
# Returns an Array of option names of the method +mid+.
#
# p FileUtils.options(:rm) #=> ["noop", "verbose", "force"]
#
def FileUtils.options_of(mid)
OPT_TABLE[mid.to_s]
end
#
# Returns an Array of method names which have the option +opt+.
#
# p FileUtils.collect_methods(:preserve) #=> ["cp", "cp_r", "copy", "install"]
#
def FileUtils.collect_methods(opt)
OPT_TABLE.keys.select {|m| OPT_TABLE[m].include?(opt.to_s) }
end
#
# This module has all methods of FileUtils module, but it outputs messages
# before acting. This equates to passing the <tt>:verbose</tt> flag to
# methods in FileUtils.
#
module Verbose
include FileUtils
@fileutils_output = $stderr
@fileutils_label = ''
::FileUtils.collect_methods('verbose').each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args)
super(*fu_update_option(args, :verbose => true))
end
EOS
end
extend self
end
#
# This module has all methods of FileUtils module, but never changes
# files/directories. This equates to passing the <tt>:noop</tt> flag
# to methods in FileUtils.
#
module NoWrite
include FileUtils
@fileutils_output = $stderr
@fileutils_label = ''
::FileUtils.collect_methods('noop').each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args)
super(*fu_update_option(args, :noop => true))
end
EOS
end
extend self
end
#
# This module has all methods of FileUtils module, but never changes
# files/directories, with printing message before acting.
# This equates to passing the <tt>:noop</tt> and <tt>:verbose</tt> flag
# to methods in FileUtils.
#
module DryRun
include FileUtils
@fileutils_output = $stderr
@fileutils_label = ''
::FileUtils.collect_methods('noop').each do |name|
module_eval(<<-EOS, __FILE__, __LINE__ + 1)
def #{name}(*args)
super(*fu_update_option(args, :noop => true, :verbose => true))
end
EOS
end
extend self
end
end
|