/
rubygems.rb
1382 lines (1098 loc) · 37.5 KB
/
rubygems.rb
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
# frozen_string_literal: true
#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++
require "rbconfig"
module Gem
VERSION = "3.6.0.dev"
end
# Must be first since it unloads the prelude from 1.9.2
require_relative "rubygems/compatibility"
require_relative "rubygems/defaults"
require_relative "rubygems/deprecate"
require_relative "rubygems/errors"
##
# RubyGems is the Ruby standard for publishing and managing third party
# libraries.
#
# For user documentation, see:
#
# * <tt>gem help</tt> and <tt>gem help [command]</tt>
# * {RubyGems User Guide}[https://guides.rubygems.org/]
# * {Frequently Asked Questions}[https://guides.rubygems.org/faqs]
#
# For gem developer documentation see:
#
# * {Creating Gems}[https://guides.rubygems.org/make-your-own-gem]
# * Gem::Specification
# * Gem::Version for version dependency notes
#
# Further RubyGems documentation can be found at:
#
# * {RubyGems Guides}[https://guides.rubygems.org]
# * {RubyGems API}[https://www.rubydoc.info/github/rubygems/rubygems] (also available from
# <tt>gem server</tt>)
#
# == RubyGems Plugins
#
# RubyGems will load plugins in the latest version of each installed gem or
# $LOAD_PATH. Plugins must be named 'rubygems_plugin' (.rb, .so, etc) and
# placed at the root of your gem's #require_path. Plugins are installed at a
# special location and loaded on boot.
#
# For an example plugin, see the {Graph gem}[https://github.com/seattlerb/graph]
# which adds a <tt>gem graph</tt> command.
#
# == RubyGems Defaults, Packaging
#
# RubyGems defaults are stored in lib/rubygems/defaults.rb. If you're packaging
# RubyGems or implementing Ruby you can change RubyGems' defaults.
#
# For RubyGems packagers, provide lib/rubygems/defaults/operating_system.rb
# and override any defaults from lib/rubygems/defaults.rb.
#
# For Ruby implementers, provide lib/rubygems/defaults/#{RUBY_ENGINE}.rb and
# override any defaults from lib/rubygems/defaults.rb.
#
# If you need RubyGems to perform extra work on install or uninstall, your
# defaults override file can set pre/post install and uninstall hooks.
# See Gem::pre_install, Gem::pre_uninstall, Gem::post_install,
# Gem::post_uninstall.
#
# == Bugs
#
# You can submit bugs to the
# {RubyGems bug tracker}[https://github.com/rubygems/rubygems/issues]
# on GitHub
#
# == Credits
#
# RubyGems is currently maintained by Eric Hodel.
#
# RubyGems was originally developed at RubyConf 2003 by:
#
# * Rich Kilmer -- rich(at)infoether.com
# * Chad Fowler -- chad(at)chadfowler.com
# * David Black -- dblack(at)wobblini.net
# * Paul Brannan -- paul(at)atdesk.com
# * Jim Weirich -- jim(at)weirichhouse.org
#
# Contributors:
#
# * Gavin Sinclair -- gsinclair(at)soyabean.com.au
# * George Marrows -- george.marrows(at)ntlworld.com
# * Dick Davies -- rasputnik(at)hellooperator.net
# * Mauricio Fernandez -- batsman.geo(at)yahoo.com
# * Simon Strandgaard -- neoneye(at)adslhome.dk
# * Dave Glasser -- glasser(at)mit.edu
# * Paul Duncan -- pabs(at)pablotron.org
# * Ville Aine -- vaine(at)cs.helsinki.fi
# * Eric Hodel -- drbrain(at)segment7.net
# * Daniel Berger -- djberg96(at)gmail.com
# * Phil Hagelberg -- technomancy(at)gmail.com
# * Ryan Davis -- ryand-ruby(at)zenspider.com
# * Evan Phoenix -- evan(at)fallingsnow.net
# * Steve Klabnik -- steve(at)steveklabnik.com
#
# (If your name is missing, PLEASE let us know!)
#
# == License
#
# See {LICENSE.txt}[rdoc-ref:lib/rubygems/LICENSE.txt] for permissions.
#
# Thanks!
#
# -The RubyGems Team
module Gem
RUBYGEMS_DIR = __dir__
##
# An Array of Regexps that match windows Ruby platforms.
WIN_PATTERNS = [
/bccwin/i,
/cygwin/i,
/djgpp/i,
/mingw/i,
/mswin/i,
/wince/i,
].freeze
GEM_DEP_FILES = %w[
gem.deps.rb
gems.rb
Gemfile
Isolate
].freeze
##
# Subdirectories in a gem repository
REPOSITORY_SUBDIRECTORIES = %w[
build_info
cache
doc
extensions
gems
plugins
specifications
].freeze
##
# Subdirectories in a gem repository for default gems
REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES = %w[
gems
specifications/default
].freeze
@@win_platform = nil
@configuration = nil
@gemdeps = nil
@loaded_specs = {}
LOADED_SPECS_MUTEX = Thread::Mutex.new
@path_to_default_spec_map = {}
@platforms = []
@ruby = nil
@ruby_api_version = nil
@sources = nil
@post_build_hooks ||= []
@post_install_hooks ||= []
@post_uninstall_hooks ||= []
@pre_uninstall_hooks ||= []
@pre_install_hooks ||= []
@pre_reset_hooks ||= []
@post_reset_hooks ||= []
@default_source_date_epoch = nil
@discover_gems_on_require = true
##
# Try to activate a gem containing +path+. Returns true if
# activation succeeded or wasn't needed because it was already
# activated. Returns false if it can't find the path in a gem.
def self.try_activate(path)
# finds the _latest_ version... regardless of loaded specs and their deps
# if another gem had a requirement that would mean we shouldn't
# activate the latest version, then either it would already be activated
# or if it was ambiguous (and thus unresolved) the code in our custom
# require will try to activate the more specific version.
spec = Gem::Specification.find_by_path path
return false unless spec
return true if spec.activated?
begin
spec.activate
rescue Gem::LoadError => e # this could fail due to gem dep collisions, go lax
spec_by_name = Gem::Specification.find_by_name(spec.name)
if spec_by_name.nil?
raise e
else
spec_by_name.activate
end
end
true
end
def self.needs
rs = Gem::RequestSet.new
yield rs
finish_resolve rs
end
def self.finish_resolve(request_set=Gem::RequestSet.new)
request_set.import Gem::Specification.unresolved_deps.values
request_set.import Gem.loaded_specs.values.map {|s| Gem::Dependency.new(s.name, s.version) }
request_set.resolve_current.each do |s|
s.full_spec.activate
end
end
##
# Find the full path to the executable for gem +name+. If the +exec_name+
# is not given, an exception will be raised, otherwise the
# specified executable's path is returned. +requirements+ allows
# you to specify specific gem versions.
def self.bin_path(name, exec_name = nil, *requirements)
requirements = Gem::Requirement.default if
requirements.empty?
find_spec_for_exe(name, exec_name, requirements).bin_file exec_name
end
def self.find_spec_for_exe(name, exec_name, requirements)
raise ArgumentError, "you must supply exec_name" unless exec_name
dep = Gem::Dependency.new name, requirements
loaded = Gem.loaded_specs[name]
return loaded if loaded && dep.matches_spec?(loaded)
specs = dep.matching_specs(true)
specs = specs.find_all do |spec|
spec.executables.include? exec_name
end if exec_name
unless spec = specs.first
msg = "can't find gem #{dep} with executable #{exec_name}"
raise Gem::GemNotFoundException, msg
end
spec
end
private_class_method :find_spec_for_exe
##
# Find the full path to the executable for gem +name+. If the +exec_name+
# is not given, an exception will be raised, otherwise the
# specified executable's path is returned. +requirements+ allows
# you to specify specific gem versions.
#
# A side effect of this method is that it will activate the gem that
# contains the executable.
#
# This method should *only* be used in bin stub files.
def self.activate_bin_path(name, exec_name = nil, *requirements) # :nodoc:
spec = find_spec_for_exe name, exec_name, requirements
Gem::LOADED_SPECS_MUTEX.synchronize do
spec.activate
finish_resolve
end
spec.bin_file exec_name
end
##
# The mode needed to read a file as straight binary.
def self.binary_mode
"rb"
end
##
# The path where gem executables are to be installed.
def self.bindir(install_dir=Gem.dir)
return File.join install_dir, "bin" unless
install_dir.to_s == Gem.default_dir.to_s
Gem.default_bindir
end
##
# The path were rubygems plugins are to be installed.
def self.plugindir(install_dir=Gem.dir)
File.join install_dir, "plugins"
end
##
# Reset the +dir+ and +path+ values. The next time +dir+ or +path+
# is requested, the values will be calculated from scratch. This is
# mainly used by the unit tests to provide test isolation.
def self.clear_paths
@paths = nil
@user_home = nil
Gem::Specification.reset
Gem::Security.reset if defined?(Gem::Security)
end
##
# The standard configuration object for gems.
def self.configuration
@configuration ||= Gem::ConfigFile.new []
end
##
# Use the given configuration object (which implements the ConfigFile
# protocol) as the standard configuration object.
def self.configuration=(config)
@configuration = config
end
##
# A Zlib::Deflate.deflate wrapper
def self.deflate(data)
require "zlib"
Zlib::Deflate.deflate data
end
# Retrieve the PathSupport object that RubyGems uses to
# lookup files.
def self.paths
@paths ||= Gem::PathSupport.new(ENV)
end
# Initialize the filesystem paths to use from +env+.
# +env+ is a hash-like object (typically ENV) that
# is queried for 'GEM_HOME', 'GEM_PATH', and 'GEM_SPEC_CACHE'
# Keys for the +env+ hash should be Strings, and values of the hash should
# be Strings or +nil+.
def self.paths=(env)
clear_paths
target = {}
env.each_pair do |k,v|
case k
when "GEM_HOME", "GEM_PATH", "GEM_SPEC_CACHE"
case v
when nil, String
target[k] = v
when Array
unless Gem::Deprecate.skip
warn <<-EOWARN
Array values in the parameter to `Gem.paths=` are deprecated.
Please use a String or nil.
An Array (#{env.inspect}) was passed in from #{caller[3]}
EOWARN
end
target[k] = v.join File::PATH_SEPARATOR
end
else
target[k] = v
end
end
@paths = Gem::PathSupport.new ENV.to_hash.merge(target)
Gem::Specification.dirs = @paths.path
end
##
# The path where gems are to be installed.
def self.dir
paths.home
end
def self.path
paths.path
end
def self.spec_cache_dir
paths.spec_cache_dir
end
##
# Quietly ensure the Gem directory +dir+ contains all the proper
# subdirectories. If we can't create a directory due to a permission
# problem, then we will silently continue.
#
# If +mode+ is given, missing directories are created with this mode.
#
# World-writable directories will never be created.
def self.ensure_gem_subdirectories(dir = Gem.dir, mode = nil)
ensure_subdirectories(dir, mode, REPOSITORY_SUBDIRECTORIES)
end
##
# Quietly ensure the Gem directory +dir+ contains all the proper
# subdirectories for handling default gems. If we can't create a
# directory due to a permission problem, then we will silently continue.
#
# If +mode+ is given, missing directories are created with this mode.
#
# World-writable directories will never be created.
def self.ensure_default_gem_subdirectories(dir = Gem.dir, mode = nil)
ensure_subdirectories(dir, mode, REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES)
end
def self.ensure_subdirectories(dir, mode, subdirs) # :nodoc:
old_umask = File.umask
File.umask old_umask | 0o002
options = {}
options[:mode] = mode if mode
subdirs.each do |name|
subdir = File.join dir, name
next if File.exist? subdir
require "fileutils"
begin
FileUtils.mkdir_p subdir, **options
rescue SystemCallError
end
end
ensure
File.umask old_umask
end
##
# The extension API version of ruby. This includes the static vs non-static
# distinction as extensions cannot be shared between the two.
def self.extension_api_version # :nodoc:
if RbConfig::CONFIG["ENABLE_SHARED"] == "no"
"#{ruby_api_version}-static"
else
ruby_api_version
end
end
##
# Returns a list of paths matching +glob+ that can be used by a gem to pick
# up features from other gems. For example:
#
# Gem.find_files('rdoc/discover').each do |path| load path end
#
# if +check_load_path+ is true (the default), then find_files also searches
# $LOAD_PATH for files as well as gems.
#
# Note that find_files will return all files even if they are from different
# versions of the same gem. See also find_latest_files
def self.find_files(glob, check_load_path=true)
files = []
files = find_files_from_load_path glob if check_load_path
gem_specifications = @gemdeps ? Gem.loaded_specs.values : Gem::Specification.stubs
files.concat gem_specifications.map {|spec|
spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}")
}.flatten
# $LOAD_PATH might contain duplicate entries or reference
# the spec dirs directly, so we prune.
files.uniq! if check_load_path
files
end
def self.find_files_from_load_path(glob) # :nodoc:
glob_with_suffixes = "#{glob}#{Gem.suffix_pattern}"
$LOAD_PATH.map do |load_path|
Gem::Util.glob_files_in_dir(glob_with_suffixes, load_path)
end.flatten.select {|file| File.file? file }
end
##
# Returns a list of paths matching +glob+ from the latest gems that can be
# used by a gem to pick up features from other gems. For example:
#
# Gem.find_latest_files('rdoc/discover').each do |path| load path end
#
# if +check_load_path+ is true (the default), then find_latest_files also
# searches $LOAD_PATH for files as well as gems.
#
# Unlike find_files, find_latest_files will return only files from the
# latest version of a gem.
def self.find_latest_files(glob, check_load_path=true)
files = []
files = find_files_from_load_path glob if check_load_path
files.concat Gem::Specification.latest_specs(true).map {|spec|
spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}")
}.flatten
# $LOAD_PATH might contain duplicate entries or reference
# the spec dirs directly, so we prune.
files.uniq! if check_load_path
files
end
##
# Top level install helper method. Allows you to install gems interactively:
#
# % irb
# >> Gem.install "minitest"
# Fetching: minitest-5.14.0.gem (100%)
# => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>]
def self.install(name, version = Gem::Requirement.default, *options)
require_relative "rubygems/dependency_installer"
inst = Gem::DependencyInstaller.new(*options)
inst.install name, version
inst.installed_gems
end
##
# Get the default RubyGems API host. This is normally
# <tt>https://rubygems.org</tt>.
def self.host
@host ||= Gem::DEFAULT_HOST
end
## Set the default RubyGems API host.
def self.host=(host)
@host = host
end
##
# The index to insert activated gem paths into the $LOAD_PATH. The activated
# gem's paths are inserted before site lib directory by default.
def self.load_path_insert_index
$LOAD_PATH.each_with_index do |path, i|
return i if path.instance_variable_defined?(:@gem_prelude_index)
end
index = $LOAD_PATH.index RbConfig::CONFIG["sitelibdir"]
index || 0
end
##
# The number of paths in the +$LOAD_PATH+ from activated gems. Used to
# prioritize +-I+ and <code>ENV['RUBYLIB']</code> entries during +require+.
def self.activated_gem_paths
@activated_gem_paths ||= 0
end
##
# Add a list of paths to the $LOAD_PATH at the proper place.
def self.add_to_load_path(*paths)
@activated_gem_paths = activated_gem_paths + paths.size
# gem directories must come after -I and ENV['RUBYLIB']
$LOAD_PATH.insert(Gem.load_path_insert_index, *paths)
end
@yaml_loaded = false
##
# Loads YAML, preferring Psych
def self.load_yaml
return if @yaml_loaded
require "psych"
require_relative "rubygems/psych_tree"
require_relative "rubygems/safe_yaml"
@yaml_loaded = true
end
@safe_marshal_loaded = false
def self.load_safe_marshal
return if @safe_marshal_loaded
require_relative "rubygems/safe_marshal"
@safe_marshal_loaded = true
end
##
# The file name and line number of the caller of the caller of this method.
#
# +depth+ is how many layers up the call stack it should go.
#
# e.g.,
#
# def a; Gem.location_of_caller; end
# a #=> ["x.rb", 2] # (it'll vary depending on file name and line number)
#
# def b; c; end
# def c; Gem.location_of_caller(2); end
# b #=> ["x.rb", 6] # (it'll vary depending on file name and line number)
def self.location_of_caller(depth = 1)
caller[depth] =~ /(.*?):(\d+).*?$/i
file = $1
lineno = $2.to_i
[file, lineno]
end
##
# The version of the Marshal format for your Ruby.
def self.marshal_version
"#{Marshal::MAJOR_VERSION}.#{Marshal::MINOR_VERSION}"
end
##
# Set array of platforms this RubyGems supports (primarily for testing).
def self.platforms=(platforms)
@platforms = platforms
end
##
# Array of platforms this RubyGems supports.
def self.platforms
@platforms ||= []
if @platforms.empty?
@platforms = [Gem::Platform::RUBY, Gem::Platform.local]
end
@platforms
end
##
# Adds a post-build hook that will be passed an Gem::Installer instance
# when Gem::Installer#install is called. The hook is called after the gem
# has been extracted and extensions have been built but before the
# executables or gemspec has been written. If the hook returns +false+ then
# the gem's files will be removed and the install will be aborted.
def self.post_build(&hook)
@post_build_hooks << hook
end
##
# Adds a post-install hook that will be passed an Gem::Installer instance
# when Gem::Installer#install is called
def self.post_install(&hook)
@post_install_hooks << hook
end
##
# Adds a post-installs hook that will be passed a Gem::DependencyInstaller
# and a list of installed specifications when
# Gem::DependencyInstaller#install is complete
def self.done_installing(&hook)
@done_installing_hooks << hook
end
##
# Adds a hook that will get run after Gem::Specification.reset is
# run.
def self.post_reset(&hook)
@post_reset_hooks << hook
end
##
# Adds a post-uninstall hook that will be passed a Gem::Uninstaller instance
# and the spec that was uninstalled when Gem::Uninstaller#uninstall is
# called
def self.post_uninstall(&hook)
@post_uninstall_hooks << hook
end
##
# Adds a pre-install hook that will be passed an Gem::Installer instance
# when Gem::Installer#install is called. If the hook returns +false+ then
# the install will be aborted.
def self.pre_install(&hook)
@pre_install_hooks << hook
end
##
# Adds a hook that will get run before Gem::Specification.reset is
# run.
def self.pre_reset(&hook)
@pre_reset_hooks << hook
end
##
# Adds a pre-uninstall hook that will be passed an Gem::Uninstaller instance
# and the spec that will be uninstalled when Gem::Uninstaller#uninstall is
# called
def self.pre_uninstall(&hook)
@pre_uninstall_hooks << hook
end
##
# The directory prefix this RubyGems was installed at. If your
# prefix is in a standard location (ie, rubygems is installed where
# you'd expect it to be), then prefix returns nil.
def self.prefix
prefix = File.dirname RUBYGEMS_DIR
if prefix != File.expand_path(RbConfig::CONFIG["sitelibdir"]) &&
prefix != File.expand_path(RbConfig::CONFIG["libdir"]) &&
File.basename(RUBYGEMS_DIR) == "lib"
prefix
end
end
##
# Refresh available gems from disk.
def self.refresh
Gem::Specification.reset
end
##
# Safely read a file in binary mode on all platforms.
def self.read_binary(path)
open_file(path, "rb+", &:read)
rescue Errno::EACCES, Errno::EROFS
open_file(path, "rb", &:read)
end
##
# Safely write a file in binary mode on all platforms.
def self.write_binary(path, data)
open_file(path, "wb") do |io|
io.write data
end
rescue Errno::ENOSPC
# If we ran out of space but the file exists, it's *guaranteed* to be corrupted.
File.delete(path) if File.exist?(path)
raise
end
##
# Open a file with given flags, and on Windows protect access with flock
def self.open_file(path, flags, &block)
File.open(path, flags) do |io|
if !java_platform? && win_platform?
begin
io.flock(File::LOCK_EX)
rescue Errno::ENOSYS, Errno::ENOTSUP
end
end
yield io
end
rescue Errno::ENOLCK # NFS
if Thread.main != Thread.current
raise
else
File.open(path, flags) do |io|
yield io
end
end
end
##
# The path to the running Ruby interpreter.
def self.ruby
if @ruby.nil?
@ruby = RbConfig.ruby
@ruby = "\"#{@ruby}\"" if /\s/.match?(@ruby)
end
@ruby
end
##
# Returns a String containing the API compatibility version of Ruby
def self.ruby_api_version
@ruby_api_version ||= RbConfig::CONFIG["ruby_version"].dup
end
def self.env_requirement(gem_name)
@env_requirements_by_name ||= {}
@env_requirements_by_name[gem_name] ||= begin
req = ENV["GEM_REQUIREMENT_#{gem_name.upcase}"] || ">= 0"
Gem::Requirement.create(req)
end
end
post_reset { @env_requirements_by_name = {} }
##
# Returns the latest release-version specification for the gem +name+.
def self.latest_spec_for(name)
dependency = Gem::Dependency.new name
fetcher = Gem::SpecFetcher.fetcher
spec_tuples, = fetcher.spec_for_dependency dependency
spec, = spec_tuples.last
spec
end
##
# Returns the latest release version of RubyGems.
def self.latest_rubygems_version
latest_version_for("rubygems-update") ||
raise("Can't find 'rubygems-update' in any repo. Check `gem source list`.")
end
##
# Returns the version of the latest release-version of gem +name+
def self.latest_version_for(name)
latest_spec_for(name)&.version
end
##
# A Gem::Version for the currently running Ruby.
def self.ruby_version
return @ruby_version if defined? @ruby_version
version = RUBY_VERSION.dup
if RUBY_PATCHLEVEL == -1
if RUBY_ENGINE == "ruby"
desc = RUBY_DESCRIPTION[/\Aruby #{Regexp.quote(RUBY_VERSION)}([^ ]+) /, 1]
else
desc = RUBY_DESCRIPTION[/\A#{RUBY_ENGINE} #{Regexp.quote(RUBY_ENGINE_VERSION)} \(#{RUBY_VERSION}([^ ]+)\) /, 1]
end
version << ".#{desc}" if desc
end
@ruby_version = Gem::Version.new version
end
##
# A Gem::Version for the currently running RubyGems
def self.rubygems_version
return @rubygems_version if defined? @rubygems_version
@rubygems_version = Gem::Version.new Gem::VERSION
end
##
# Returns an Array of sources to fetch remote gems from. Uses
# default_sources if the sources list is empty.
def self.sources
source_list = configuration.sources || default_sources
@sources ||= Gem::SourceList.from(source_list)
end
##
# Need to be able to set the sources without calling
# Gem.sources.replace since that would cause an infinite loop.
#
# DOC: This comment is not documentation about the method itself, it's
# more of a code comment about the implementation.
def self.sources=(new_sources)
if !new_sources
@sources = nil
else
@sources = Gem::SourceList.from(new_sources)
end
end
##
# Glob pattern for require-able path suffixes.
def self.suffix_pattern
@suffix_pattern ||= "{#{suffixes.join(",")}}"
end
##
# Regexp for require-able path suffixes.
def self.suffix_regexp
@suffix_regexp ||= /#{Regexp.union(suffixes)}\z/
end
##
# Glob pattern for require-able plugin suffixes.
def self.plugin_suffix_pattern
@plugin_suffix_pattern ||= "_plugin#{suffix_pattern}"
end
##
# Regexp for require-able plugin suffixes.
def self.plugin_suffix_regexp
@plugin_suffix_regexp ||= /_plugin#{suffix_regexp}\z/
end
##
# Suffixes for require-able paths.
def self.suffixes
@suffixes ||= ["",
".rb",
*%w[DLEXT DLEXT2].map do |key|
val = RbConfig::CONFIG[key]
next unless val && !val.empty?
".#{val}"
end].compact.uniq
end
##
# Suffixes for dynamic library require-able paths.
def self.dynamic_library_suffixes
@dynamic_library_suffixes ||= suffixes - [".rb"]
end
##
# Prints the amount of time the supplied block takes to run using the debug
# UI output.
def self.time(msg, width = 0, display = Gem.configuration.verbose)
now = Time.now
value = yield
elapsed = Time.now - now
ui.say format("%2$*1$s: %3$3.3fs", -width, msg, elapsed) if display
value
end
##
# Lazily loads DefaultUserInteraction and returns the default UI.
def self.ui
require_relative "rubygems/user_interaction"
Gem::DefaultUserInteraction.ui
end
##
# Use the +home+ and +paths+ values for Gem.dir and Gem.path. Used mainly
# by the unit tests to provide environment isolation.
def self.use_paths(home, *paths)
paths.flatten!
paths.compact!
hash = { "GEM_HOME" => home, "GEM_PATH" => paths.empty? ? home : paths.join(File::PATH_SEPARATOR) }
hash.delete_if {|_, v| v.nil? }
self.paths = hash
end
##
# Is this a windows platform?
def self.win_platform?
if @@win_platform.nil?
ruby_platform = RbConfig::CONFIG["host_os"]
@@win_platform = !WIN_PATTERNS.find {|r| ruby_platform =~ r }.nil?
end
@@win_platform
end