1 files changed, 190 insertions, 0 deletions
diff --git a/jni/ruby/lib/rubygems/commands/contents_command.rb b/jni/ruby/lib/rubygems/commands/contents_command.rb
new file mode 100644
index 0000000..4b944f1
--- /dev/null
+++ b/jni/ruby/lib/rubygems/commands/contents_command.rb
@@ -0,0 +1,190 @@
+require 'English'
+require 'rubygems/command'
+require 'rubygems/version_option'
+
+class Gem::Commands::ContentsCommand < Gem::Command
+
+  include Gem::VersionOption
+
+  def initialize
+    super 'contents', 'Display the contents of the installed gems',
+          :specdirs => [], :lib_only => false, :prefix => true,
+          :show_install_dir => false
+
+    add_version_option
+
+    add_option(      '--all',
+               "Contents for all gems") do |all, options|
+      options[:all] = all
+    end
+
+    add_option('-s', '--spec-dir a,b,c', Array,
+               "Search for gems under specific paths") do |spec_dirs, options|
+      options[:specdirs] = spec_dirs
+    end
+
+    add_option('-l', '--[no-]lib-only',
+               "Only return files in the Gem's lib_dirs") do |lib_only, options|
+      options[:lib_only] = lib_only
+    end
+
+    add_option(      '--[no-]prefix',
+               "Don't include installed path prefix") do |prefix, options|
+      options[:prefix] = prefix
+    end
+
+    add_option(      '--[no-]show-install-dir',
+               'Show only the gem install dir') do |show, options|
+      options[:show_install_dir] = show
+    end
+
+    @path_kind = nil
+    @spec_dirs = nil
+    @version   = nil
+  end
+
+  def arguments # :nodoc:
+    "GEMNAME       name of gem to list contents for"
+  end
+
+  def defaults_str # :nodoc:
+    "--no-lib-only --prefix"
+  end
+
+  def description # :nodoc:
+    <<-EOF
+The contents command lists the files in an installed gem.  The listing can
+be given as full file names, file names without the installed directory
+prefix or only the files that are requireable.
+    EOF
+  end
+
+  def usage # :nodoc:
+    "#{program_name} GEMNAME [GEMNAME ...]"
+  end
+
+  def execute
+    @version   = options[:version] || Gem::Requirement.default
+    @spec_dirs = specification_directories
+    @path_kind = path_description @spec_dirs
+
+    names = gem_names
+
+    names.each do |name|
+      found =
+        if options[:show_install_dir] then
+          gem_install_dir name
+        else
+          gem_contents name
+        end
+
+      terminate_interaction 1 unless found or names.length > 1
+    end
+  end
+
+  def files_in spec
+    if spec.default_gem? then
+      files_in_default_gem spec
+    else
+      files_in_gem spec
+    end
+  end
+
+  def files_in_gem spec
+    gem_path  = spec.full_gem_path
+    extra     = "/{#{spec.require_paths.join ','}}" if options[:lib_only]
+    glob      = "#{gem_path}#{extra}/**/*"
+    prefix_re = /#{Regexp.escape(gem_path)}\//
+
+    Dir[glob].map do |file|
+      [gem_path, file.sub(prefix_re, "")]
+    end
+  end
+
+  def files_in_default_gem spec
+    spec.files.map do |file|
+      case file
+      when /\A#{spec.bindir}\//
+        [RbConfig::CONFIG['bindir'], $POSTMATCH]
+      when /\.so\z/
+        [RbConfig::CONFIG['archdir'], file]
+      else
+        [RbConfig::CONFIG['rubylibdir'], file]
+      end
+    end
+  end
+
+  def gem_contents name
+    spec = spec_for name
+
+    return false unless spec
+
+    files = files_in spec
+
+    show_files files
+
+    true
+  end
+
+  def gem_install_dir name
+    spec = spec_for name
+
+    return false unless spec
+
+    say spec.gem_dir
+
+    true
+  end
+
+  def gem_names # :nodoc:
+    if options[:all] then
+      Gem::Specification.map(&:name)
+    else
+      get_all_gem_names
+    end
+  end
+
+  def path_description spec_dirs # :nodoc:
+    if spec_dirs.empty? then
+      "default gem paths"
+    else
+      "specified path"
+    end
+  end
+
+  def show_files files
+    files.sort.each do |prefix, basename|
+      absolute_path = File.join(prefix, basename)
+      next if File.directory? absolute_path
+
+      if options[:prefix] then
+        say absolute_path
+      else
+        say basename
+      end
+    end
+  end
+
+  def spec_for name
+    spec = Gem::Specification.find_all_by_name(name, @version).last
+
+    return spec if spec
+
+    say "Unable to find gem '#{name}' in #{@path_kind}"
+
+    if Gem.configuration.verbose then
+      say "\nDirectories searched:"
+      @spec_dirs.sort.each { |dir| say dir }
+    end
+
+    return nil
+  end
+
+  def specification_directories # :nodoc:
+    options[:specdirs].map do |i|
+      [i, File.join(i, "specifications")]
+    end.flatten
+  end
+
+end
+