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# frozen_string_literal: true
require 'rubygems/command'
require 'rubygems/install_update_options'
require 'rubygems/dependency_installer'
require 'rubygems/local_remote_options'
require 'rubygems/validator'
require 'rubygems/version_option'
##
# Gem installer command line tool
#
# See `gem help install`
class Gem::Commands::InstallCommand < Gem::Command
attr_reader :installed_specs # :nodoc:
include Gem::VersionOption
include Gem::LocalRemoteOptions
include Gem::InstallUpdateOptions
def initialize
defaults = Gem::DependencyInstaller::DEFAULT_OPTIONS.merge({
:format_executable => false,
:lock => true,
:suggest_alternate => true,
:version => Gem::Requirement.default,
:without_groups => [],
})
super 'install', 'Install a gem into the local repository', defaults
add_install_update_options
add_local_remote_options
add_platform_option
add_version_option
add_prerelease_option "to be installed. (Only for listed gems)"
@installed_specs = []
end
def arguments # :nodoc:
"GEMNAME name of gem to install"
end
def defaults_str # :nodoc:
"--both --version '#{Gem::Requirement.default}' --document --no-force\n" +
"--install-dir #{Gem.dir} --lock"
end
def description # :nodoc:
<<-EOF
The install command installs local or remote gem into a gem repository.
For gems with executables ruby installs a wrapper file into the executable
directory by default. This can be overridden with the --no-wrappers option.
The wrapper allows you to choose among alternate gem versions using _version_.
For example `rake _0.7.3_ --version` will run rake version 0.7.3 if a newer
version is also installed.
Gem Dependency Files
====================
RubyGems can install a consistent set of gems across multiple environments
using `gem install -g` when a gem dependencies file (gem.deps.rb, Gemfile or
Isolate) is present. If no explicit file is given RubyGems attempts to find
one in the current directory.
When the RUBYGEMS_GEMDEPS environment variable is set to a gem dependencies
file the gems from that file will be activated at startup time. Set it to a
specific filename or to "-" to have RubyGems automatically discover the gem
dependencies file by walking up from the current directory.
NOTE: Enabling automatic discovery on multiuser systems can lead to
execution of arbitrary code when used from directories outside your control.
Extension Install Failures
==========================
If an extension fails to compile during gem installation the gem
specification is not written out, but the gem remains unpacked in the
repository. You may need to specify the path to the library's headers and
libraries to continue. You can do this by adding a -- between RubyGems'
options and the extension's build options:
$ gem install some_extension_gem
[build fails]
Gem files will remain installed in \\
/path/to/gems/some_extension_gem-1.0 for inspection.
Results logged to /path/to/gems/some_extension_gem-1.0/gem_make.out
$ gem install some_extension_gem -- --with-extension-lib=/path/to/lib
[build succeeds]
$ gem list some_extension_gem
*** LOCAL GEMS ***
some_extension_gem (1.0)
$
If you correct the compilation errors by editing the gem files you will need
to write the specification by hand. For example:
$ gem install some_extension_gem
[build fails]
Gem files will remain installed in \\
/path/to/gems/some_extension_gem-1.0 for inspection.
Results logged to /path/to/gems/some_extension_gem-1.0/gem_make.out
$ [cd /path/to/gems/some_extension_gem-1.0]
$ [edit files or what-have-you and run make]
$ gem spec ../../cache/some_extension_gem-1.0.gem --ruby > \\
../../specifications/some_extension_gem-1.0.gemspec
$ gem list some_extension_gem
*** LOCAL GEMS ***
some_extension_gem (1.0)
$
EOF
end
def usage # :nodoc:
"#{program_name} GEMNAME [GEMNAME ...] [options] -- --build-flags"
end
def check_install_dir # :nodoc:
if options[:install_dir] and options[:user_install] then
alert_error "Use --install-dir or --user-install but not both"
terminate_interaction 1
end
end
def check_version # :nodoc:
if options[:version] != Gem::Requirement.default and
get_all_gem_names.size > 1 then
alert_error "Can't use --version w/ multiple gems. Use name:ver instead."
terminate_interaction 1
end
end
def execute
if options.include? :gemdeps then
install_from_gemdeps
return # not reached
end
@installed_specs = []
ENV.delete 'GEM_PATH' if options[:install_dir].nil? and RUBY_VERSION > '1.9'
check_install_dir
check_version
load_hooks
exit_code = install_gems
show_installed
terminate_interaction exit_code
end
def install_from_gemdeps # :nodoc:
require 'rubygems/request_set'
rs = Gem::RequestSet.new
specs = rs.install_from_gemdeps options do |req, inst|
s = req.full_spec
if inst
say "Installing #{s.name} (#{s.version})"
else
say "Using #{s.name} (#{s.version})"
end
end
@installed_specs = specs
terminate_interaction
end
def install_gem name, version # :nodoc:
return if options[:conservative] and
not Gem::Dependency.new(name, version).matching_specs.empty?
req = Gem::Requirement.create(version)
if options[:ignore_dependencies] then
install_gem_without_dependencies name, req
else
inst = Gem::DependencyInstaller.new options
request_set = inst.resolve_dependencies name, req
if options[:explain]
puts "Gems to install:"
request_set.sorted_requests.each do |s|
puts " #{s.full_name}"
end
return
else
@installed_specs.concat request_set.install options
end
show_install_errors inst.errors
end
end
def install_gem_without_dependencies name, req # :nodoc:
gem = nil
if local? then
if name =~ /\.gem$/ and File.file? name then
source = Gem::Source::SpecificFile.new name
spec = source.spec
else
source = Gem::Source::Local.new
spec = source.find_gem name, req
end
gem = source.download spec if spec
end
if remote? and not gem then
dependency = Gem::Dependency.new name, req
dependency.prerelease = options[:prerelease]
fetcher = Gem::RemoteFetcher.fetcher
gem = fetcher.download_to_cache dependency
end
inst = Gem::Installer.at gem, options
inst.install
require 'rubygems/dependency_installer'
dinst = Gem::DependencyInstaller.new options
dinst.installed_gems.replace [inst.spec]
Gem.done_installing_hooks.each do |hook|
hook.call dinst, [inst.spec]
end unless Gem.done_installing_hooks.empty?
@installed_specs.push(inst.spec)
end
def install_gems # :nodoc:
exit_code = 0
get_all_gem_names_and_versions.each do |gem_name, gem_version|
gem_version ||= options[:version]
begin
install_gem gem_name, gem_version
rescue Gem::InstallError => e
alert_error "Error installing #{gem_name}:\n\t#{e.message}"
exit_code |= 1
rescue Gem::GemNotFoundException, Gem::UnsatisfiableDependencyError => e
domain = options[:domain]
domain = :local unless options[:suggest_alternate]
show_lookup_failure e.name, e.version, e.errors, domain
exit_code |= 2
end
end
exit_code
end
##
# Loads post-install hooks
def load_hooks # :nodoc:
if options[:install_as_default]
require 'rubygems/install_default_message'
else
require 'rubygems/install_message'
end
require 'rubygems/rdoc'
end
def show_install_errors errors # :nodoc:
return unless errors
errors.each do |x|
return unless Gem::SourceFetchProblem === x
msg = "Unable to pull data from '#{x.source.uri}': #{x.error.message}"
alert_warning msg
end
end
def show_installed # :nodoc:
return if @installed_specs.empty?
gems = @installed_specs.length == 1 ? 'gem' : 'gems'
say "#{@installed_specs.length} #{gems} installed"
end
end