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
|
#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++
require 'fileutils'
require 'rubygems'
require 'rubygems/dependency_list'
require 'rubygems/doc_manager'
require 'rubygems/user_interaction'
##
# An Uninstaller.
#
class Gem::Uninstaller
include Gem::UserInteraction
##
# Constructs an Uninstaller instance
#
# gem:: [String] The Gem name to uninstall
#
def initialize(gem, options)
@gem = gem
@version = options[:version] || Gem::Requirement.default
@force_executables = options[:executables]
@force_all = options[:all]
@force_ignore = options[:ignore]
end
##
# Performs the uninstall of the Gem. This removes the spec, the
# Gem directory, and the cached .gem file,
#
def uninstall
list = Gem.source_index.search(/^#{@gem}$/, @version)
if list.empty? then
raise Gem::InstallError, "Unknown gem #{@gem}-#{@version}"
elsif list.size > 1 && @force_all
remove_all(list.dup)
remove_executables(list.last)
elsif list.size > 1
say
gem_names = list.collect {|gem| gem.full_name} + ["All versions"]
gem_name, index =
choose_from_list("Select gem to uninstall:", gem_names)
if index == list.size
remove_all(list.dup)
remove_executables(list.last)
elsif index >= 0 && index < list.size
to_remove = list[index]
remove(to_remove, list)
remove_executables(to_remove)
else
say "Error: must enter a number [1-#{list.size+1}]"
end
else
remove(list[0], list.dup)
remove_executables(list.last)
end
end
##
# Remove executables and batch files (windows only) for the gem as
# it is being installed
#
# gemspec::[Specification] the gem whose executables need to be removed.
#
def remove_executables(gemspec)
return if gemspec.nil?
if(gemspec.executables.size > 0)
raise Gem::FilePermissionError.new(Gem.bindir) unless
File.writable?(Gem.bindir)
list = Gem.source_index.search(gemspec.name).delete_if { |spec|
spec.version == gemspec.version
}
executables = gemspec.executables.clone
list.each do |spec|
spec.executables.each do |exe_name|
executables.delete(exe_name)
end
end
return if executables.size == 0
answer = @force_executables || ask_yes_no(
"Remove executables and scripts for\n" +
"'#{gemspec.executables.join(", ")}' in addition to the gem?",
true) # " # appease ruby-mode - don't ask
unless answer
say "Executables and scripts will remain installed."
return
else
gemspec.executables.each do |exe_name|
say "Removing #{exe_name}"
File.unlink File.join(Gem.bindir, exe_name) rescue nil
File.unlink File.join(Gem.bindir, exe_name + ".bat") rescue nil
end
end
end
end
#
# list:: the list of all gems to remove
#
# Warning: this method modifies the +list+ parameter. Once it has
# uninstalled a gem, it is removed from that list.
#
def remove_all(list)
list.dup.each { |gem| remove(gem, list) }
end
#
# spec:: the spec of the gem to be uninstalled
# list:: the list of all such gems
#
# Warning: this method modifies the +list+ parameter. Once it has
# uninstalled a gem, it is removed from that list.
#
def remove(spec, list)
unless ok_to_remove? spec then
raise Gem::DependencyRemovalException,
"Uninstallation aborted due to dependent gem(s)"
end
raise Gem::FilePermissionError, spec.installation_path unless
File.writable?(spec.installation_path)
FileUtils.rm_rf spec.full_gem_path
original_platform_name = [
spec.name, spec.version, spec.original_platform].join '-'
spec_dir = File.join spec.installation_path, 'specifications'
gemspec = File.join spec_dir, "#{spec.full_name}.gemspec"
unless File.exist? gemspec then
gemspec = File.join spec_dir, "#{original_platform_name}.gemspec"
end
FileUtils.rm_rf gemspec
cache_dir = File.join spec.installation_path, 'cache'
gem = File.join cache_dir, "#{spec.full_name}.gem"
unless File.exist? gem then
gem = File.join cache_dir, "#{original_platform_name}.gem"
end
FileUtils.rm_rf gem
Gem::DocManager.new(spec).uninstall_doc
say "Successfully uninstalled #{spec.full_name}"
list.delete spec
end
def ok_to_remove?(spec)
return true if @force_ignore
srcindex = Gem::SourceIndex.from_installed_gems
deplist = Gem::DependencyList.from_source_index srcindex
deplist.ok_to_remove?(spec.full_name) || ask_if_ok(spec)
end
def ask_if_ok(spec)
msg = ['']
msg << 'You have requested to uninstall the gem:'
msg << "\t#{spec.full_name}"
spec.dependent_gems.each do |gem,dep,satlist|
msg <<
("#{gem.name}-#{gem.version} depends on " +
"[#{dep.name} (#{dep.version_requirements})]")
end
msg << 'If you remove this gems, one or more dependencies will not be met.'
msg << 'Continue with Uninstall?'
return ask_yes_no(msg.join("\n"), true)
end
end
|
