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ðŸ“„ build_command.rb(1.48 KB)
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ðŸ“„ outdated_command.rb(852 B)
ðŸ“„ owner_command.rb(2.53 KB)
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ðŸ“„ push_command.rb(2.56 KB)
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ðŸ“„ rdoc_command.rb(2.49 KB)
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ðŸ“„ server_command.rb(2.38 KB)
ðŸ“„ setup_command.rb(17.02 KB)
ðŸ“„ signin_command.rb(872 B)
ðŸ“„ signout_command.rb(906 B)
ðŸ“„ sources_command.rb(5.21 KB)
ðŸ“„ specification_command.rb(3.31 KB)
ðŸ“„ stale_command.rb(962 B)
ðŸ“„ uninstall_command.rb(4.61 KB)
ðŸ“„ unpack_command.rb(4.84 KB)
ðŸ“„ update_command.rb(6.97 KB)
ðŸ“„ which_command.rb(2.17 KB)
ðŸ“„ yank_command.rb(2.3 KB)

Editing: unpack_command.rb

# frozen_string_literal: true
require 'rubygems/command'
require 'rubygems/installer'
require 'rubygems/version_option'
require 'rubygems/security_option'
require 'rubygems/remote_fetcher'

# forward-declare

module Gem::Security # :nodoc:
  class Policy # :nodoc:
  end
end

class Gem::Commands::UnpackCommand < Gem::Command

include Gem::VersionOption
  include Gem::SecurityOption

def initialize
    require 'fileutils'

super 'unpack', 'Unpack an installed gem to the current directory',
          :version => Gem::Requirement.default,
          :target  => Dir.pwd

add_option('--target=DIR',
               'target directory for unpacking') do |value, options|
      options[:target] = value
    end

add_option('--spec', 'unpack the gem specification') do |value, options|
      options[:spec] = true
    end

add_security_option
    add_version_option
  end

def arguments # :nodoc:
    "GEMNAME       name of gem to unpack"
  end

def defaults_str # :nodoc:
    "--version '#{Gem::Requirement.default}'"
  end

def description
    <<-EOF
The unpack command allows you to examine the contents of a gem or modify
them to help diagnose a bug.

You can add the contents of the unpacked gem to the load path using the
RUBYLIB environment variable or -I:

$ gem unpack my_gem
  Unpacked gem: '.../my_gem-1.0'
  [edit my_gem-1.0/lib/my_gem.rb]
  $ ruby -Imy_gem-1.0/lib -S other_program

You can repackage an unpacked gem using the build command.  See the build
command help for an example.
    EOF
  end

def usage # :nodoc:
    "#{program_name} GEMNAME"
  end

#--
  # TODO: allow, e.g., 'gem unpack rake-0.3.1'.  Find a general solution for
  # this, so that it works for uninstall as well.  (And check other commands
  # at the same time.)

def execute
    security_policy = options[:security_policy]

get_all_gem_names.each do |name|
      dependency = Gem::Dependency.new name, options[:version]
      path = get_path dependency

unless path then
        alert_error "Gem '#{name}' not installed nor fetchable."
        next
      end

if @options[:spec] then
        spec, metadata = get_metadata path, security_policy

if metadata.nil? then
          alert_error "--spec is unsupported on '#{name}' (old format gem)"
          next
        end

spec_file = File.basename spec.spec_file

File.open spec_file, 'w' do |io|
          io.write metadata
        end
      else
        basename = File.basename path, '.gem'
        target_dir = File.expand_path basename, options[:target]

package = Gem::Package.new path, security_policy
        package.extract_files target_dir

say "Unpacked gem: '#{target_dir}'"
      end
    end
  end

##
  #
  # Find cached filename in Gem.path. Returns nil if the file cannot be found.
  #
  #--
  # TODO: see comments in get_path() about general service.

def find_in_cache(filename)
    Gem.path.each do |path|
      this_path = File.join(path, "cache", filename)
      return this_path if File.exist? this_path
    end

return nil
  end

##
  # Return the full path to the cached gem file matching the given
  # name and version requirement.  Returns 'nil' if no match.
  #
  # Example:
  #
  #   get_path 'rake', '> 0.4' # "/usr/lib/ruby/gems/1.8/cache/rake-0.4.2.gem"
  #   get_path 'rake', '< 0.1' # nil
  #   get_path 'rak'           # nil (exact name required)
  #--
  # TODO: This should be refactored so that it's a general service. I don't
  # think any of our existing classes are the right place though.  Just maybe
  # 'Cache'?
  #
  # TODO: It just uses Gem.dir for now.  What's an easy way to get the list of
  # source directories?

def get_path dependency
    return dependency.name if dependency.name =~ /\.gem$/i

specs = dependency.matching_specs

selected = specs.max_by { |s| s.version }

return Gem::RemoteFetcher.fetcher.download_to_cache(dependency) unless
      selected

return unless dependency.name =~ /^#{selected.name}$/i

# We expect to find (basename).gem in the 'cache' directory.  Furthermore,
    # the name match must be exact (ignoring case).

path = find_in_cache File.basename selected.cache_file

return Gem::RemoteFetcher.fetcher.download_to_cache(dependency) unless path

path
  end

##
  # Extracts the Gem::Specification and raw metadata from the .gem file at
  # +path+.
  #--
  # TODO move to Gem::Package as #raw_spec or something

def get_metadata path, security_policy = nil
    format = Gem::Package.new path, security_policy
    spec = format.spec

metadata = nil

File.open path, Gem.binary_mode do |io|
      tar = Gem::Package::TarReader.new io
      tar.each_entry do |entry|
        case entry.full_name
        when 'metadata' then
          metadata = entry.read
        when 'metadata.gz' then
          metadata = Gem.gunzip entry.read
        end
      end
    end

return spec, metadata
  end

end

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Editing: unpack_command.rb

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