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
|
#
# = pathname.rb
#
# Object-Oriented Pathname Class
#
# Author:: Tanaka Akira <akr@m17n.org>
# Documentation:: Author and Gavin Sinclair
#
# For documentation, see class Pathname.
#
# <tt>pathname.rb</tt> is distributed with Ruby since 1.8.0.
#
require 'pathname.so'
class Pathname
# :stopdoc:
if RUBY_VERSION < "1.9"
TO_PATH = :to_str
else
# to_path is implemented so Pathname objects are usable with File.open, etc.
TO_PATH = :to_path
end
SAME_PATHS = if File::FNM_SYSCASE.nonzero?
proc {|a, b| a.casecmp(b).zero?}
else
proc {|a, b| a == b}
end
# :startdoc:
if File::ALT_SEPARATOR
SEPARATOR_LIST = "#{Regexp.quote File::ALT_SEPARATOR}#{Regexp.quote File::SEPARATOR}"
SEPARATOR_PAT = /[#{SEPARATOR_LIST}]/
else
SEPARATOR_LIST = "#{Regexp.quote File::SEPARATOR}"
SEPARATOR_PAT = /#{Regexp.quote File::SEPARATOR}/
end
# chop_basename(path) -> [pre-basename, basename] or nil
def chop_basename(path)
base = File.basename(path)
if /\A#{SEPARATOR_PAT}?\z/o =~ base
return nil
else
return path[0, path.rindex(base)], base
end
end
private :chop_basename
# split_names(path) -> prefix, [name, ...]
def split_names(path)
names = []
while r = chop_basename(path)
path, basename = r
names.unshift basename
end
return path, names
end
private :split_names
def prepend_prefix(prefix, relpath)
if relpath.empty?
File.dirname(prefix)
elsif /#{SEPARATOR_PAT}/o =~ prefix
prefix = File.dirname(prefix)
prefix = File.join(prefix, "") if File.basename(prefix + 'a') != 'a'
prefix + relpath
else
prefix + relpath
end
end
private :prepend_prefix
# Returns clean pathname of +self+ with consecutive slashes and useless dots
# removed. The filesystem is not accessed.
#
# If +consider_symlink+ is +true+, then a more conservative algorithm is used
# to avoid breaking symbolic linkages. This may retain more <tt>..</tt>
# entries than absolutely necessary, but without accessing the filesystem,
# this can't be avoided. See #realpath.
#
def cleanpath(consider_symlink=false)
if consider_symlink
cleanpath_conservative
else
cleanpath_aggressive
end
end
#
# Clean the path simply by resolving and removing excess "." and ".." entries.
# Nothing more, nothing less.
#
def cleanpath_aggressive
path = @path
names = []
pre = path
while r = chop_basename(pre)
pre, base = r
case base
when '.'
when '..'
names.unshift base
else
if names[0] == '..'
names.shift
else
names.unshift base
end
end
end
if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
names.shift while names[0] == '..'
end
self.class.new(prepend_prefix(pre, File.join(*names)))
end
private :cleanpath_aggressive
# has_trailing_separator?(path) -> bool
def has_trailing_separator?(path)
if r = chop_basename(path)
pre, basename = r
pre.length + basename.length < path.length
else
false
end
end
private :has_trailing_separator?
# add_trailing_separator(path) -> path
def add_trailing_separator(path)
if File.basename(path + 'a') == 'a'
path
else
File.join(path, "") # xxx: Is File.join is appropriate to add separator?
end
end
private :add_trailing_separator
def del_trailing_separator(path)
if r = chop_basename(path)
pre, basename = r
pre + basename
elsif /#{SEPARATOR_PAT}+\z/o =~ path
$` + File.dirname(path)[/#{SEPARATOR_PAT}*\z/o]
else
path
end
end
private :del_trailing_separator
def cleanpath_conservative
path = @path
names = []
pre = path
while r = chop_basename(pre)
pre, base = r
names.unshift base if base != '.'
end
if /#{SEPARATOR_PAT}/o =~ File.basename(pre)
names.shift while names[0] == '..'
end
if names.empty?
self.class.new(File.dirname(pre))
else
if names.last != '..' && File.basename(path) == '.'
names << '.'
end
result = prepend_prefix(pre, File.join(*names))
if /\A(?:\.|\.\.)\z/ !~ names.last && has_trailing_separator?(path)
self.class.new(add_trailing_separator(result))
else
self.class.new(result)
end
end
end
private :cleanpath_conservative
# #parent returns the parent directory.
#
# This is same as <tt>self + '..'</tt>.
def parent
self + '..'
end
# #mountpoint? returns +true+ if <tt>self</tt> points to a mountpoint.
def mountpoint?
begin
stat1 = self.lstat
stat2 = self.parent.lstat
stat1.dev == stat2.dev && stat1.ino == stat2.ino ||
stat1.dev != stat2.dev
rescue Errno::ENOENT
false
end
end
#
# #root? is a predicate for root directories. I.e. it returns +true+ if the
# pathname consists of consecutive slashes.
#
# It doesn't access actual filesystem. So it may return +false+ for some
# pathnames which points to roots such as <tt>/usr/..</tt>.
#
def root?
!!(chop_basename(@path) == nil && /#{SEPARATOR_PAT}/o =~ @path)
end
# Predicate method for testing whether a path is absolute.
# It returns +true+ if the pathname begins with a slash.
def absolute?
!relative?
end
# The opposite of #absolute?
def relative?
path = @path
while r = chop_basename(path)
path, = r
end
path == ''
end
#
# Iterates over each component of the path.
#
# Pathname.new("/usr/bin/ruby").each_filename {|filename| ... }
# # yields "usr", "bin", and "ruby".
#
def each_filename # :yield: filename
return to_enum(__method__) unless block_given?
_, names = split_names(@path)
names.each {|filename| yield filename }
nil
end
# Iterates over and yields a new Pathname object
# for each element in the given path in descending order.
#
# Pathname.new('/path/to/some/file.rb').descend {|v| p v}
# #<Pathname:/>
# #<Pathname:/path>
# #<Pathname:/path/to>
# #<Pathname:/path/to/some>
# #<Pathname:/path/to/some/file.rb>
#
# Pathname.new('path/to/some/file.rb').descend {|v| p v}
# #<Pathname:path>
# #<Pathname:path/to>
# #<Pathname:path/to/some>
# #<Pathname:path/to/some/file.rb>
#
# It doesn't access actual filesystem.
#
# This method is available since 1.8.5.
#
def descend
vs = []
ascend {|v| vs << v }
vs.reverse_each {|v| yield v }
nil
end
# Iterates over and yields a new Pathname object
# for each element in the given path in ascending order.
#
# Pathname.new('/path/to/some/file.rb').ascend {|v| p v}
# #<Pathname:/path/to/some/file.rb>
# #<Pathname:/path/to/some>
# #<Pathname:/path/to>
# #<Pathname:/path>
# #<Pathname:/>
#
# Pathname.new('path/to/some/file.rb').ascend {|v| p v}
# #<Pathname:path/to/some/file.rb>
# #<Pathname:path/to/some>
# #<Pathname:path/to>
# #<Pathname:path>
#
# It doesn't access actual filesystem.
#
# This method is available since 1.8.5.
#
def ascend
path = @path
yield self
while r = chop_basename(path)
path, = r
break if path.empty?
yield self.class.new(del_trailing_separator(path))
end
end
#
# Pathname#+ appends a pathname fragment to this one to produce a new Pathname
# object.
#
# p1 = Pathname.new("/usr") # Pathname:/usr
# p2 = p1 + "bin/ruby" # Pathname:/usr/bin/ruby
# p3 = p1 + "/etc/passwd" # Pathname:/etc/passwd
#
# This method doesn't access the file system; it is pure string manipulation.
#
def +(other)
other = Pathname.new(other) unless Pathname === other
Pathname.new(plus(@path, other.to_s))
end
def plus(path1, path2) # -> path
prefix2 = path2
index_list2 = []
basename_list2 = []
while r2 = chop_basename(prefix2)
prefix2, basename2 = r2
index_list2.unshift prefix2.length
basename_list2.unshift basename2
end
return path2 if prefix2 != ''
prefix1 = path1
while true
while !basename_list2.empty? && basename_list2.first == '.'
index_list2.shift
basename_list2.shift
end
break unless r1 = chop_basename(prefix1)
prefix1, basename1 = r1
next if basename1 == '.'
if basename1 == '..' || basename_list2.empty? || basename_list2.first != '..'
prefix1 = prefix1 + basename1
break
end
index_list2.shift
basename_list2.shift
end
r1 = chop_basename(prefix1)
if !r1 && /#{SEPARATOR_PAT}/o =~ File.basename(prefix1)
while !basename_list2.empty? && basename_list2.first == '..'
index_list2.shift
basename_list2.shift
end
end
if !basename_list2.empty?
suffix2 = path2[index_list2.first..-1]
r1 ? File.join(prefix1, suffix2) : prefix1 + suffix2
else
r1 ? prefix1 : File.dirname(prefix1)
end
end
private :plus
#
# Pathname#join joins pathnames.
#
# <tt>path0.join(path1, ..., pathN)</tt> is the same as
# <tt>path0 + path1 + ... + pathN</tt>.
#
def join(*args)
args.unshift self
result = args.pop
result = Pathname.new(result) unless Pathname === result
return result if result.absolute?
args.reverse_each {|arg|
arg = Pathname.new(arg) unless Pathname === arg
result = arg + result
return result if result.absolute?
}
result
end
#
# Returns the children of the directory (files and subdirectories, not
# recursive) as an array of Pathname objects. By default, the returned
# pathnames will have enough information to access the files. If you set
# +with_directory+ to +false+, then the returned pathnames will contain the
# filename only.
#
# For example:
# pn = Pathname("/usr/lib/ruby/1.8")
# pn.children
# # -> [ Pathname:/usr/lib/ruby/1.8/English.rb,
# Pathname:/usr/lib/ruby/1.8/Env.rb,
# Pathname:/usr/lib/ruby/1.8/abbrev.rb, ... ]
# pn.children(false)
# # -> [ Pathname:English.rb, Pathname:Env.rb, Pathname:abbrev.rb, ... ]
#
# Note that the result never contain the entries <tt>.</tt> and <tt>..</tt> in
# the directory because they are not children.
#
# This method has existed since 1.8.1.
#
def children(with_directory=true)
with_directory = false if @path == '.'
result = []
Dir.foreach(@path) {|e|
next if e == '.' || e == '..'
if with_directory
result << self.class.new(File.join(@path, e))
else
result << self.class.new(e)
end
}
result
end
# Iterates over the children of the directory
# (files and subdirectories, not recursive).
# It yields Pathname object for each child.
# By default, the yielded pathnames will have enough information to access the files.
# If you set +with_directory+ to +false+, then the returned pathnames will contain the filename only.
#
# Pathname("/usr/local").each_child {|f| p f }
# #=> #<Pathname:/usr/local/share>
# # #<Pathname:/usr/local/bin>
# # #<Pathname:/usr/local/games>
# # #<Pathname:/usr/local/lib>
# # #<Pathname:/usr/local/include>
# # #<Pathname:/usr/local/sbin>
# # #<Pathname:/usr/local/src>
# # #<Pathname:/usr/local/man>
#
# Pathname("/usr/local").each_child(false) {|f| p f }
# #=> #<Pathname:share>
# # #<Pathname:bin>
# # #<Pathname:games>
# # #<Pathname:lib>
# # #<Pathname:include>
# # #<Pathname:sbin>
# # #<Pathname:src>
# # #<Pathname:man>
#
def each_child(with_directory=true, &b)
children(with_directory).each(&b)
end
#
# #relative_path_from returns a relative path from the argument to the
# receiver. If +self+ is absolute, the argument must be absolute too. If
# +self+ is relative, the argument must be relative too.
#
# #relative_path_from doesn't access the filesystem. It assumes no symlinks.
#
# ArgumentError is raised when it cannot find a relative path.
#
# This method has existed since 1.8.1.
#
def relative_path_from(base_directory)
dest_directory = self.cleanpath.to_s
base_directory = base_directory.cleanpath.to_s
dest_prefix = dest_directory
dest_names = []
while r = chop_basename(dest_prefix)
dest_prefix, basename = r
dest_names.unshift basename if basename != '.'
end
base_prefix = base_directory
base_names = []
while r = chop_basename(base_prefix)
base_prefix, basename = r
base_names.unshift basename if basename != '.'
end
unless SAME_PATHS[dest_prefix, base_prefix]
raise ArgumentError, "different prefix: #{dest_prefix.inspect} and #{base_directory.inspect}"
end
while !dest_names.empty? &&
!base_names.empty? &&
SAME_PATHS[dest_names.first, base_names.first]
dest_names.shift
base_names.shift
end
if base_names.include? '..'
raise ArgumentError, "base_directory has ..: #{base_directory.inspect}"
end
base_names.fill('..')
relpath_names = base_names + dest_names
if relpath_names.empty?
Pathname.new('.')
else
Pathname.new(File.join(*relpath_names))
end
end
end
class Pathname # * FileTest *
# See <tt>FileTest.owned?</tt>.
def owned?() FileTest.owned?(@path) end
# See <tt>FileTest.readable?</tt>.
def readable?() FileTest.readable?(@path) end
# See <tt>FileTest.world_readable?</tt>.
def world_readable?() FileTest.world_readable?(@path) end
# See <tt>FileTest.readable_real?</tt>.
def readable_real?() FileTest.readable_real?(@path) end
# See <tt>FileTest.setuid?</tt>.
def setuid?() FileTest.setuid?(@path) end
# See <tt>FileTest.setgid?</tt>.
def setgid?() FileTest.setgid?(@path) end
# See <tt>FileTest.size</tt>.
def size() FileTest.size(@path) end
# See <tt>FileTest.size?</tt>.
def size?() FileTest.size?(@path) end
# See <tt>FileTest.sticky?</tt>.
def sticky?() FileTest.sticky?(@path) end
# See <tt>FileTest.symlink?</tt>.
def symlink?() FileTest.symlink?(@path) end
# See <tt>FileTest.writable?</tt>.
def writable?() FileTest.writable?(@path) end
# See <tt>FileTest.world_writable?</tt>.
def world_writable?() FileTest.world_writable?(@path) end
# See <tt>FileTest.writable_real?</tt>.
def writable_real?() FileTest.writable_real?(@path) end
# See <tt>FileTest.zero?</tt>.
def zero?() FileTest.zero?(@path) end
end
class Pathname # * Dir *
# See <tt>Dir.glob</tt>. Returns or yields Pathname objects.
def Pathname.glob(*args) # :yield: pathname
if block_given?
Dir.glob(*args) {|f| yield self.new(f) }
else
Dir.glob(*args).map {|f| self.new(f) }
end
end
# See <tt>Dir.getwd</tt>. Returns the current working directory as a Pathname.
def Pathname.getwd() self.new(Dir.getwd) end
class << self; alias pwd getwd end
# Return the entries (files and subdirectories) in the directory, each as a
# Pathname object.
def entries() Dir.entries(@path).map {|f| self.class.new(f) } end
# Iterates over the entries (files and subdirectories) in the directory. It
# yields a Pathname object for each entry.
#
# This method has existed since 1.8.1.
def each_entry(&block) # :yield: pathname
Dir.foreach(@path) {|f| yield self.class.new(f) }
end
# See <tt>Dir.mkdir</tt>. Create the referenced directory.
def mkdir(*args) Dir.mkdir(@path, *args) end
# See <tt>Dir.rmdir</tt>. Remove the referenced directory.
def rmdir() Dir.rmdir(@path) end
# See <tt>Dir.open</tt>.
def opendir(&block) # :yield: dir
Dir.open(@path, &block)
end
end
class Pathname # * Find *
#
# Pathname#find is an iterator to traverse a directory tree in a depth first
# manner. It yields a Pathname for each file under "this" directory.
#
# Since it is implemented by <tt>find.rb</tt>, <tt>Find.prune</tt> can be used
# to control the traverse.
#
# If +self+ is <tt>.</tt>, yielded pathnames begin with a filename in the
# current directory, not <tt>./</tt>.
#
def find(&block) # :yield: pathname
require 'find'
if @path == '.'
Find.find(@path) {|f| yield self.class.new(f.sub(%r{\A\./}, '')) }
else
Find.find(@path) {|f| yield self.class.new(f) }
end
end
end
class Pathname # * FileUtils *
# See <tt>FileUtils.mkpath</tt>. Creates a full path, including any
# intermediate directories that don't yet exist.
def mkpath
require 'fileutils'
FileUtils.mkpath(@path)
nil
end
# See <tt>FileUtils.rm_r</tt>. Deletes a directory and all beneath it.
def rmtree
# The name "rmtree" is borrowed from File::Path of Perl.
# File::Path provides "mkpath" and "rmtree".
require 'fileutils'
FileUtils.rm_r(@path)
nil
end
end
class Pathname # * mixed *
# Removes a file or directory, using <tt>File.unlink</tt> or
# <tt>Dir.unlink</tt> as necessary.
def unlink()
begin
Dir.unlink @path
rescue Errno::ENOTDIR
File.unlink @path
end
end
alias delete unlink
end
class Pathname
undef =~
end
module Kernel
# create a pathname object.
#
# This method is available since 1.8.5.
def Pathname(path) # :doc:
Pathname.new(path)
end
private :Pathname
end
|