# module Gem::QueryUtils

### Public Instance Methods

add_query_options() click to toggle source

    # File lib/rubygems/query_utils.rb, line 13
    def add_query_options
      add_option("-i", "--[no-]installed",
                 "Check for installed gem") do |value, options|
        options[:installed] = value
      end

      add_option("-I", "Equivalent to --no-installed") do |_value, options|
        options[:installed] = false
      end

      add_version_option command, "for use with --installed"

      add_option("-d", "--[no-]details",
                 "Display detailed information of gem(s)") do |value, options|
        options[:details] = value
      end

      add_option("--[no-]versions",
                 "Display only gem names") do |value, options|
        options[:versions] = value
        options[:details] = false unless value
      end

      add_option("-a", "--all",
                 "Display all gem versions") do |value, options|
        options[:all] = value
      end

      add_option("-e", "--exact",
                 "Name of gem(s) to query on matches the",
                 "provided STRING") do |value, options|
        options[:exact] = value
      end

      add_option("--[no-]prerelease",
                 "Display prerelease versions") do |value, options|
        options[:prerelease] = value
      end

      add_local_remote_options
    end

execute() click to toggle source

    # File lib/rubygems/query_utils.rb, line 59
    def execute
      gem_names = if args.empty?
        [options[:name]]
      else
        options[:exact] ? args.map {|arg| /\A#{Regexp.escape(arg)}\Z/ } : args.map {|arg| /#{arg}/i }
      end

      terminate_interaction(check_installed_gems(gem_names)) if check_installed_gems?

      gem_names.each {|n| show_gems(n) }
    end

### Private Instance Methods

args() click to toggle source

    # File lib/rubygems/query_utils.rb, line 109
    def args
      options[:args].to_a
    end

check_installed_gems(gem_names) click to toggle source

    # File lib/rubygems/query_utils.rb, line 73
    def check_installed_gems(gem_names)
      exit_code = 0

      if args.empty? && !gem_name?
        alert_error "You must specify a gem name"
        exit_code = 4
      elsif gem_names.count > 1
        alert_error "You must specify only ONE gem!"
        exit_code = 4
      else
        installed = installed?(gem_names.first, options[:version])
        installed = !installed unless options[:installed]

        say(installed)
        exit_code = 1 unless installed
      end

      exit_code
    end

check_installed_gems?() click to toggle source

    # File lib/rubygems/query_utils.rb, line 93
    def check_installed_gems?
      !options[:installed].nil?
    end

display_header(type) click to toggle source

    # File lib/rubygems/query_utils.rb, line 113
    def display_header(type)
      if (ui.outs.tty? && Gem.configuration.verbose) || both?
        say
        say "*** #{type} GEMS ***"
        say
      end
    end

entry_details(entry, detail_tuple, specs, platforms) click to toggle source

    # File lib/rubygems/query_utils.rb, line 223
    def entry_details(entry, detail_tuple, specs, platforms)
      return unless options[:details]

      name_tuple, spec = detail_tuple

      spec = spec.fetch_spec(name_tuple)if spec.respond_to?(:fetch_spec)

      entry << "\n"

      spec_platforms   entry, platforms
      spec_authors     entry, spec
      spec_homepage    entry, spec
      spec_license     entry, spec
      spec_loaded_from entry, spec, specs
      spec_summary     entry, spec
    end

entry_versions(entry, name_tuples, platforms, specs) click to toggle source

    # File lib/rubygems/query_utils.rb, line 240
    def entry_versions(entry, name_tuples, platforms, specs)
      return unless options[:versions]

      list =
        if platforms.empty? || options[:details]
          name_tuples.map(&:version).uniq
        else
          platforms.sort.reverse.map do |version, pls|
            out = version.to_s

            if options[:domain] == :local
              default = specs.any? do |s|
                !s.is_a?(Gem::Source) && s.version == version && s.default_gem?
              end
              out = "default: #{out}" if default
            end

            if pls != [Gem::Platform::RUBY]
              platform_list = [pls.delete(Gem::Platform::RUBY), *pls.sort].compact
              out = platform_list.unshift(out).join(" ")
            end

            out
          end
        end

      entry << " (#{list.join ", "})"
    end

gem_name?() click to toggle source

    # File lib/rubygems/query_utils.rb, line 97
    def gem_name?
      !options[:name].nil?
    end

installed?(name, req = Gem::Requirement.default) click to toggle source

Check if gem `name` version `version` is installed.

    # File lib/rubygems/query_utils.rb, line 177
    def installed?(name, req = Gem::Requirement.default)
      Gem::Specification.any? {|s| s.name =~ name && req =~ s.version }
    end

make_entry(entry_tuples, platforms) click to toggle source

    # File lib/rubygems/query_utils.rb, line 269
    def make_entry(entry_tuples, platforms)
      detail_tuple = entry_tuples.first

      name_tuples, specs = entry_tuples.flatten.partition do |item|
        Gem::NameTuple === item
      end

      entry = [name_tuples.first.name]

      entry_versions(entry, name_tuples, platforms, specs)
      entry_details(entry, detail_tuple, specs, platforms)

      entry.join
    end

output_query_results(spec_tuples) click to toggle source

    # File lib/rubygems/query_utils.rb, line 181
    def output_query_results(spec_tuples)
      output = []
      versions = Hash.new {|h,name| h[name] = [] }

      spec_tuples.each do |spec_tuple, source|
        versions[spec_tuple.name] << [spec_tuple, source]
      end

      versions = versions.sort_by do |(n,_),_|
        n.downcase
      end

      output_versions output, versions

      say output.join(options[:details] ? "\n\n" : "\n")
    end

output_versions(output, versions) click to toggle source

    # File lib/rubygems/query_utils.rb, line 198
    def output_versions(output, versions)
      versions.each do |_gem_name, matching_tuples|
        matching_tuples = matching_tuples.sort_by {|n,_| n.version }.reverse

        platforms = Hash.new {|h,version| h[version] = [] }

        matching_tuples.each do |n, _|
          platforms[n.version] << n.platform if n.platform
        end

        seen = {}

        matching_tuples.delete_if do |n,_|
          if seen[n.version]
            true
          else
            seen[n.version] = true
            false
          end
        end

        output << clean_text(make_entry(matching_tuples, platforms))
      end
    end

prerelease() click to toggle source

    # File lib/rubygems/query_utils.rb, line 101
    def prerelease
      options[:prerelease]
    end

show_gems(name) click to toggle source

Guts of original execute

    # File lib/rubygems/query_utils.rb, line 122
    def show_gems(name)
      show_local_gems(name)  if local?
      show_remote_gems(name) if remote?
    end

show_local_gems(name, req = Gem::Requirement.default) click to toggle source

    # File lib/rubygems/query_utils.rb, line 127
    def show_local_gems(name, req = Gem::Requirement.default)
      display_header("LOCAL")

      specs = Gem::Specification.find_all do |s|
        name_matches = name ? s.name =~ name : true
        version_matches = show_prereleases? || !s.version.prerelease?

        name_matches && version_matches
      end.uniq(&:full_name)

      spec_tuples = specs.map do |spec|
        [spec.name_tuple, spec]
      end

      output_query_results(spec_tuples)
    end

show_prereleases?() click to toggle source

    # File lib/rubygems/query_utils.rb, line 105
    def show_prereleases?
      prerelease.nil? || prerelease
    end

show_remote_gems(name) click to toggle source

    # File lib/rubygems/query_utils.rb, line 144
    def show_remote_gems(name)
      display_header("REMOTE")

      fetcher = Gem::SpecFetcher.fetcher

      spec_tuples = if name.nil?
        fetcher.detect(specs_type) { true }
      else
        fetcher.detect(specs_type) do |name_tuple|
          name === name_tuple.name && options[:version].satisfied_by?(name_tuple.version)
        end
      end

      output_query_results(spec_tuples)
    end

spec_authors(entry, spec) click to toggle source

    # File lib/rubygems/query_utils.rb, line 284
    def spec_authors(entry, spec)
      authors = "Author#{spec.authors.length > 1 ? "s" : ""}: ".dup
      authors << spec.authors.join(", ")
      entry << format_text(authors, 68, 4)
    end

spec_homepage(entry, spec) click to toggle source

    # File lib/rubygems/query_utils.rb, line 290
    def spec_homepage(entry, spec)
      return if spec.homepage.nil? || spec.homepage.empty?

      entry << "\n" << format_text("Homepage: #{spec.homepage}", 68, 4)
    end

spec_license(entry, spec) click to toggle source

    # File lib/rubygems/query_utils.rb, line 296
    def spec_license(entry, spec)
      return if spec.license.nil? || spec.license.empty?

      licenses = "License#{spec.licenses.length > 1 ? "s" : ""}: ".dup
      licenses << spec.licenses.join(", ")
      entry << "\n" << format_text(licenses, 68, 4)
    end

spec_loaded_from(entry, spec, specs) click to toggle source

    # File lib/rubygems/query_utils.rb, line 304
    def spec_loaded_from(entry, spec, specs)
      return unless spec.loaded_from

      if specs.length == 1
        default = spec.default_gem? ? " (default)" : nil
        entry << "\n" << "    Installed at#{default}: #{spec.base_dir}"
      else
        label = "Installed at"
        specs.each do |s|
          version = s.version.to_s
          default = ", default" if s.default_gem?
          entry << "\n" << "    #{label} (#{version}#{default}): #{s.base_dir}"
          label = " " * label.length
        end
      end
    end

spec_platforms(entry, platforms) click to toggle source

    # File lib/rubygems/query_utils.rb, line 321
    def spec_platforms(entry, platforms)
      non_ruby = platforms.any? do |_, pls|
        pls.any? {|pl| pl != Gem::Platform::RUBY }
      end

      return unless non_ruby

      if platforms.length == 1
        title = platforms.values.length == 1 ? "Platform" : "Platforms"
        entry << "    #{title}: #{platforms.values.sort.join(", ")}\n"
      else
        entry << "    Platforms:\n"

        sorted_platforms = platforms.sort

        sorted_platforms.each do |version, pls|
          label = "        #{version}: "
          data = format_text pls.sort.join(", "), 68, label.length
          data[0, label.length] = label
          entry << data << "\n"
        end
      end
    end

spec_summary(entry, spec) click to toggle source

    # File lib/rubygems/query_utils.rb, line 345
    def spec_summary(entry, spec)
      summary = truncate_text(spec.summary, "the summary for #{spec.full_name}")
      entry << "\n\n" << format_text(summary, 68, 4)
    end

specs_type() click to toggle source

    # File lib/rubygems/query_utils.rb, line 160
    def specs_type
      if options[:all] || options[:version].specific?
        if options[:prerelease]
          :complete
        else
          :released
        end
      elsif options[:prerelease]
        :prerelease
      else
        :latest
      end
    end