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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

require 'rubygems/remote_fetcher'
require 'rubygems/user_interaction'
require 'rubygems/errors'
require 'rubygems/text'
require 'rubygems/name_tuple'

##
# SpecFetcher handles metadata updates from remote gem repositories.

class Gem::SpecFetcher

include Gem::UserInteraction
  include Gem::Text

##
  # Cache of latest specs

attr_reader :latest_specs # :nodoc:

##
  # Cache of all released specs

attr_reader :specs # :nodoc:

##
  # Cache of prerelease specs

attr_reader :prerelease_specs # :nodoc:

@fetcher = nil

def self.fetcher
    @fetcher ||= new
  end

def self.fetcher=(fetcher) # :nodoc:
    @fetcher = fetcher
  end

def initialize
    @dir = File.join Gem.user_home, '.gem', 'specs'
    @update_cache =
      begin
        File.stat(Gem.user_home).uid == Process.uid
      rescue Errno::EACCES, Errno::ENOENT
        false
      end

@specs = {}
    @latest_specs = {}
    @prerelease_specs = {}

@caches = {
      :latest => @latest_specs,
      :prerelease => @prerelease_specs,
      :released => @specs,
    }

@fetcher = Gem::RemoteFetcher.fetcher
  end

##
  #
  # Find and fetch gem name tuples that match +dependency+.
  #
  # If +matching_platform+ is false, gems for all platforms are returned.

def search_for_dependency(dependency, matching_platform=true)
    found = {}

rejected_specs = {}

if dependency.prerelease?
      type = :complete
    elsif dependency.latest_version?
      type = :latest
    else
      type = :released
    end

list, errors = available_specs(type)
    list.each do |source, specs|
      found[source] = specs.select do |tup|
        if dependency.match?(tup)
          if matching_platform and !Gem::Platform.match(tup.platform)
            pm = (
              rejected_specs[dependency] ||= \
                Gem::PlatformMismatch.new(tup.name, tup.version))
            pm.add_platform tup.platform
            false
          else
            true
          end
        end
      end
    end

errors += rejected_specs.values

tuples = []

found.each do |source, specs|
      specs.each do |s|
        tuples << [s, source]
      end
    end

tuples = tuples.sort_by { |x| x[0] }

return [tuples, errors]
  end

##
  # Return all gem name tuples who's names match +obj+

def detect(type=:complete)
    tuples = []

list, _ = available_specs(type)
    list.each do |source, specs|
      specs.each do |tup|
        if yield(tup)
          tuples << [tup, source]
        end
      end
    end

tuples
  end

##
  # Find and fetch specs that match +dependency+.
  #
  # If +matching_platform+ is false, gems for all platforms are returned.

def spec_for_dependency(dependency, matching_platform=true)
    tuples, errors = search_for_dependency(dependency, matching_platform)

specs = []
    tuples.each do |tup, source|
      begin
        spec = source.fetch_spec(tup)
      rescue Gem::RemoteFetcher::FetchError => e
        errors << Gem::SourceFetchProblem.new(source, e)
      else
        specs << [spec, source]
      end
    end

return [specs, errors]
  end

##
  # Suggests gems based on the supplied +gem_name+. Returns an array of
  # alternative gem names.

def suggest_gems_from_name gem_name
    gem_name        = gem_name.downcase.tr('_-', '')
    max             = gem_name.size / 2
    names           = available_specs(:complete).first.values.flatten(1)

matches = names.map { |n|
      next unless n.match_platform?

distance = levenshtein_distance gem_name, n.name.downcase.tr('_-', '')

next if distance >= max

return [n.name] if distance == 0

[n.name, distance]
    }.compact

matches = matches.uniq.sort_by { |name, dist| dist }

matches.first(5).map { |name, dist| name }
  end

##
  # Returns a list of gems available for each source in Gem::sources.
  #
  # +type+ can be one of 3 values:
  # :released   => Return the list of all released specs
  # :complete   => Return the list of all specs
  # :latest     => Return the list of only the highest version of each gem
  # :prerelease => Return the list of all prerelease only specs
  #

def available_specs(type)
    errors = []
    list = {}

Gem.sources.each_source do |source|
      begin
        names = case type
                when :latest
                  tuples_for source, :latest
                when :released
                  tuples_for source, :released
                when :complete
                  tuples_for(source, :prerelease, true) +
                    tuples_for(source, :released)
                when :prerelease
                  tuples_for(source, :prerelease)
                else
                  raise Gem::Exception, "Unknown type - :#{type}"
                end
      rescue Gem::RemoteFetcher::FetchError => e
        errors << Gem::SourceFetchProblem.new(source, e)
      else
        list[source] = names
      end
    end

[list, errors]
  end

def tuples_for(source, type, gracefully_ignore=false)
    cache = @caches[type]

if gracefully_ignore
      begin
        cache[source.uri] ||= source.load_specs(type)
      rescue Gem::RemoteFetcher::FetchError
        []
      end
    else
      cache[source.uri] ||= source.load_specs(type)
    end
  end

end