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Current File : //opt/alt/ruby33/share/rubygems/rubygems/source/local.rb

# frozen_string_literal: true

##
# The local source finds gems in the current directory for fulfilling
# dependencies.

class Gem::Source::Local < Gem::Source
  def initialize # :nodoc:
    @specs   = nil
    @api_uri = nil
    @uri     = nil
    @load_specs_names = {}
  end

  ##
  # Local sorts before Gem::Source and after Gem::Source::Installed

  def <=>(other)
    case other
    when Gem::Source::Installed,
         Gem::Source::Lock then
      -1
    when Gem::Source::Local then
      0
    when Gem::Source then
      1
    end
  end

  def inspect # :nodoc:
    keys = @specs ? @specs.keys.sort : "NOT LOADED"
    format("#<%s specs: %p>", self.class, keys)
  end

  def load_specs(type) # :nodoc:
    @load_specs_names[type] ||= begin
      names = []

      @specs = {}

      Dir["*.gem"].each do |file|
        pkg = Gem::Package.new(file)
        spec = pkg.spec
      rescue SystemCallError, Gem::Package::FormatError
        # ignore
      else
        tup = spec.name_tuple
        @specs[tup] = [File.expand_path(file), pkg]

        case type
        when :released
          unless pkg.spec.version.prerelease?
            names << pkg.spec.name_tuple
          end
        when :prerelease
          if pkg.spec.version.prerelease?
            names << pkg.spec.name_tuple
          end
        when :latest
          tup = pkg.spec.name_tuple

          cur = names.find {|x| x.name == tup.name }
          if !cur
            names << tup
          elsif cur.version < tup.version
            names.delete cur
            names << tup
          end
        else
          names << pkg.spec.name_tuple
        end
      end

      names
    end
  end

  def find_gem(gem_name, version = Gem::Requirement.default, prerelease = false) # :nodoc:
    load_specs :complete

    found = []

    @specs.each do |n, data|
      next unless n.name == gem_name
      s = data[1].spec

      if version.satisfied_by?(s.version)
        if prerelease
          found << s
        elsif !s.version.prerelease? || version.prerelease?
          found << s
        end
      end
    end

    found.max_by(&:version)
  end

  def fetch_spec(name) # :nodoc:
    load_specs :complete

    if data = @specs[name]
      data.last.spec
    else
      raise Gem::Exception, "Unable to find spec for #{name.inspect}"
    end
  end

  def download(spec, cache_dir = nil) # :nodoc:
    load_specs :complete

    @specs.each do |_name, data|
      return data[0] if data[1].spec == spec
    end

    raise Gem::Exception, "Unable to find file for '#{spec.full_name}'"
  end

  def pretty_print(q) # :nodoc:
    q.group 2, "[Local gems:", "]" do
      q.breakable
      q.seplist @specs.keys do |v|
        q.text v.full_name
      end
    end
  end
end