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
|
# frozen_string_literal: true
require_relative "options"
require_relative "env"
require_relative "subprocess"
class RubygemsVersionManager
include Spec::Options
include Spec::Env
include Spec::Subprocess
def initialize(source)
@source = source
end
def switch
return if use_system?
assert_system_features_not_loaded!
switch_local_copy_if_needed
reexec_if_needed
end
def assert_system_features_not_loaded!
at_exit do
rubylibdir = RbConfig::CONFIG["rubylibdir"]
rubygems_path = rubylibdir + "/rubygems"
rubygems_default_path = rubygems_path + "/defaults"
bundler_path = rubylibdir + "/bundler"
bad_loaded_features = $LOADED_FEATURES.select do |loaded_feature|
(loaded_feature.start_with?(rubygems_path) && !loaded_feature.start_with?(rubygems_default_path)) ||
loaded_feature.start_with?(bundler_path)
end
errors = if bad_loaded_features.any?
all_commands_output + "the following features were incorrectly loaded:\n#{bad_loaded_features.join("\n")}"
end
raise errors if errors
end
end
private
def use_system?
@source.nil?
end
def reexec_if_needed
return unless rubygems_unrequire_needed?
require "rbconfig"
cmd = [RbConfig.ruby, $0, *ARGV].compact
ENV["RUBYOPT"] = opt_add("-I#{File.join(local_copy_path, "lib")}", opt_remove("--disable-gems", ENV["RUBYOPT"]))
exec(ENV, *cmd)
end
def switch_local_copy_if_needed
return unless local_copy_switch_needed?
git("checkout #{target_tag}", local_copy_path)
ENV["RGV"] = local_copy_path
end
def rubygems_unrequire_needed?
require "rubygems"
!$LOADED_FEATURES.include?(File.join(local_copy_path, "lib/rubygems.rb"))
end
def local_copy_switch_needed?
!source_is_path? && target_tag != local_copy_tag
end
def target_tag
@target_tag ||= resolve_target_tag
end
def local_copy_tag
git("rev-parse --abbrev-ref HEAD", local_copy_path)
end
def local_copy_path
@local_copy_path ||= resolve_local_copy_path
end
def resolve_local_copy_path
return expanded_source if source_is_path?
rubygems_path = File.join(source_root, "tmp/rubygems")
unless File.directory?(rubygems_path)
git("clone .. #{rubygems_path}", source_root)
end
rubygems_path
end
def source_is_path?
File.directory?(expanded_source)
end
def expanded_source
@expanded_source ||= File.expand_path(@source, source_root)
end
def source_root
@source_root ||= File.expand_path(ruby_core? ? "../../.." : "../..", __dir__)
end
def resolve_target_tag
return "v#{@source}" if @source.match?(/^\d/)
@source
end
end
|
