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Name	Size	Permission	Date
commands	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
core_ext	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
ext	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
package	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
security	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
ssl_certs	[ DIR ]	drwxr-xr-x	2024-03-03 22:43
available_set.rb	1.56 KB	-rw-r--r--	2013-03-17 14:51
command.rb	13.43 KB	-rw-r--r--	2012-11-30 16:27
command_manager.rb	5.27 KB	-rw-r--r--	2012-12-06 05:26
compatibility.rb	1.58 KB	-rw-r--r--	2013-02-05 21:06
config_file.rb	11.82 KB	-rw-r--r--	2023-07-26 14:06
defaults.rb	2.76 KB	-rw-r--r--	2013-07-22 16:33
dependency.rb	7.74 KB	-rw-r--r--	2012-12-23 00:35
dependency_installer.rb	12.36 KB	-rw-r--r--	2013-11-13 02:59
dependency_list.rb	5.53 KB	-rw-r--r--	2013-03-17 14:51
dependency_resolver.rb	14.97 KB	-rw-r--r--	2013-07-22 16:33
deprecate.rb	1.73 KB	-rw-r--r--	2012-11-29 06:52
doctor.rb	2.86 KB	-rw-r--r--	2013-01-04 07:31
errors.rb	2.14 KB	-rw-r--r--	2013-07-22 16:33
exceptions.rb	2.7 KB	-rw-r--r--	2012-11-29 06:52
ext.rb	416 B	-rw-r--r--	2012-12-10 00:40
gem_runner.rb	1.98 KB	-rw-r--r--	2012-11-29 06:52
gemcutter_utilities.rb	2.84 KB	-rw-r--r--	2013-09-15 14:23
indexer.rb	12.89 KB	-rw-r--r--	2012-12-06 05:26
install_message.rb	281 B	-rw-r--r--	2012-11-29 06:52
install_update_options.rb	5.09 KB	-rw-r--r--	2012-11-29 06:52
installer.rb	22.19 KB	-rw-r--r--	2013-08-16 15:35
installer_test_case.rb	4.28 KB	-rw-r--r--	2012-11-29 06:52
local_remote_options.rb	3.36 KB	-rw-r--r--	2011-07-27 01:40
mock_gem_ui.rb	1.35 KB	-rw-r--r--	2012-11-29 06:52
name_tuple.rb	1.96 KB	-rw-r--r--	2012-11-29 06:52
package.rb	13.22 KB	-rw-r--r--	2023-07-26 14:06
package_task.rb	3.77 KB	-rw-r--r--	2013-08-16 15:35
path_support.rb	1.58 KB	-rw-r--r--	2012-11-30 00:23
platform.rb	5.63 KB	-rw-r--r--	2013-07-22 16:33
psych_additions.rb	249 B	-rw-r--r--	2013-07-25 15:42
psych_tree.rb	763 B	-rw-r--r--	2013-07-22 16:33
rdoc.rb	7.75 KB	-rw-r--r--	2013-03-17 14:51
remote_fetcher.rb	15.99 KB	-rw-r--r--	2015-08-18 13:01
request_set.rb	3.67 KB	-rw-r--r--	2012-11-29 06:52
requirement.rb	6.02 KB	-rw-r--r--	2012-11-30 16:27
safe_yaml.rb	1.11 KB	-rw-r--r--	2023-07-26 14:06
security.rb	20.56 KB	-rw-r--r--	2013-03-17 15:01
server.rb	21.69 KB	-rw-r--r--	2013-10-26 17:44
source.rb	3.12 KB	-rw-r--r--	2013-10-26 17:44
source_list.rb	1.22 KB	-rw-r--r--	2012-11-29 06:52
source_local.rb	1.88 KB	-rw-r--r--	2012-11-29 06:52
source_specific_file.rb	552 B	-rw-r--r--	2012-11-29 06:52
spec_fetcher.rb	5.17 KB	-rw-r--r--	2013-10-26 17:44
specification.rb	66.9 KB	-rw-r--r--	2023-07-26 14:06
syck_hack.rb	2.07 KB	-rw-r--r--	2012-11-29 06:52
test_case.rb	28.09 KB	-rw-r--r--	2013-07-25 15:42
test_utilities.rb	4.03 KB	-rw-r--r--	2013-03-17 15:07
text.rb	1.23 KB	-rw-r--r--	2011-07-27 01:40
uninstaller.rb	8.29 KB	-rw-r--r--	2012-12-19 07:19
user_interaction.rb	11.44 KB	-rw-r--r--	2012-11-29 06:52
validator.rb	4.08 KB	-rw-r--r--	2012-12-23 00:35
version.rb	10.5 KB	-rw-r--r--	2013-10-26 17:44
version_option.rb	1.59 KB	-rw-r--r--	2011-07-27 01:40

Rename

#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++

require 'tsort'
require 'rubygems/deprecate'

##
# Gem::DependencyList is used for installing and uninstalling gems in the
# correct order to avoid conflicts.
#--
# TODO: It appears that all but topo-sort functionality is being duplicated
# (or is planned to be duplicated) elsewhere in rubygems.  Is the majority of
# this class necessary anymore?  Especially #ok?, #why_not_ok?

class Gem::DependencyList
  attr_reader :specs

include Enumerable
  include TSort

##
  # Allows enabling/disabling use of development dependencies

attr_accessor :development

##
  # Creates a DependencyList from the current specs.

def self.from_specs
    list = new
    list.add(*Gem::Specification.to_a)
    list
  end

##
  # Creates a new DependencyList.  If +development+ is true, development
  # dependencies will be included.

def initialize development = false
    @specs = []

@development = development
  end

##
  # Adds +gemspecs+ to the dependency list.

def add(*gemspecs)
    @specs.concat gemspecs
  end

def clear
    @specs.clear
  end

##
  # Return a list of the gem specifications in the dependency list, sorted in
  # order so that no gemspec in the list depends on a gemspec earlier in the
  # list.
  #
  # This is useful when removing gems from a set of installed gems.  By
  # removing them in the returned order, you don't get into as many dependency
  # issues.
  #
  # If there are circular dependencies (yuck!), then gems will be returned in
  # order until only the circular dependents and anything they reference are
  # left.  Then arbitrary gemspecs will be returned until the circular
  # dependency is broken, after which gems will be returned in dependency
  # order again.

def dependency_order
    sorted = strongly_connected_components.flatten

result = []
    seen = {}

sorted.each do |spec|
      if index = seen[spec.name] then
        if result[index].version < spec.version then
          result[index] = spec
        end
      else
        seen[spec.name] = result.length
        result << spec
      end
    end

result.reverse
  end

##
  # Iterator over dependency_order

def each(&block)
    dependency_order.each(&block)
  end

def find_name(full_name)
    @specs.find { |spec| spec.full_name == full_name }
  end

def inspect # :nodoc:
    "#<%s:0x%x %p>" % [self.class, object_id, map { |s| s.full_name }]
  end

##
  # Are all the dependencies in the list satisfied?

def ok?
    why_not_ok?(:quick).empty?
  end

def why_not_ok? quick = false
    unsatisfied = Hash.new { |h,k| h[k] = [] }
    each do |spec|
      spec.runtime_dependencies.each do |dep|
        inst = Gem::Specification.any? { |installed_spec|
          dep.name == installed_spec.name and
            dep.requirement.satisfied_by? installed_spec.version
        }

unless inst or @specs.find { |s| s.satisfies_requirement? dep } then
          unsatisfied[spec.name] << dep
          return unsatisfied if quick
        end
      end
    end

unsatisfied
  end

##
  # Is is ok to remove a gemspec from the dependency list?
  #
  # If removing the gemspec creates breaks a currently ok dependency, then it
  # is NOT ok to remove the gemspec.

def ok_to_remove?(full_name, check_dev=true)
    gem_to_remove = find_name full_name

siblings = @specs.find_all { |s|
      s.name == gem_to_remove.name &&
        s.full_name != gem_to_remove.full_name
    }

deps = []

@specs.each do |spec|
      check = check_dev ? spec.dependencies : spec.runtime_dependencies

check.each do |dep|
        deps << dep if gem_to_remove.satisfies_requirement?(dep)
      end
    end

deps.all? { |dep|
      siblings.any? { |s|
        s.satisfies_requirement? dep
      }
    }
  end

##
  # Remove everything in the DependencyList that matches but doesn't
  # satisfy items in +dependencies+ (a hash of gem names to arrays of
  # dependencies).

def remove_specs_unsatisfied_by dependencies
    specs.reject! { |spec|
      dep = dependencies[spec.name]
      dep and not dep.requirement.satisfied_by? spec.version
    }
  end

##
  # Removes the gemspec matching +full_name+ from the dependency list

def remove_by_name(full_name)
    @specs.delete_if { |spec| spec.full_name == full_name }
  end

##
  # Return a hash of predecessors.  <tt>result[spec]</tt> is an Array of
  # gemspecs that have a dependency satisfied by the named gemspec.

def spec_predecessors
    result = Hash.new { |h,k| h[k] = [] }

specs = @specs.sort.reverse

specs.each do |spec|
      specs.each do |other|
        next if spec == other

other.dependencies.each do |dep|
          if spec.satisfies_requirement? dep then
            result[spec] << other
          end
        end
      end
    end

result
  end

def tsort_each_node(&block)
    @specs.each(&block)
  end

def tsort_each_child(node)
    specs = @specs.sort.reverse

dependencies = node.runtime_dependencies
    dependencies.push(*node.development_dependencies) if @development

dependencies.each do |dep|
      specs.each do |spec|
        if spec.satisfies_requirement? dep then
          begin
            yield spec
          rescue TSort::Cyclic
            # do nothing
          end
          break
        end
      end
    end
  end

private

##
  # Count the number of gemspecs in the list +specs+ that are not in
  # +ignored+.

def active_count(specs, ignored)
    specs.count { |spec| ignored[spec.full_name].nil? }
  end

end