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module Gem |
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class << self |
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|
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## |
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# Returns full path of previous but one directory of dir in path |
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# E.g. for '/usr/share/ruby', 'ruby', it returns '/usr' |
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|
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def previous_but_one_dir_to(path, dir) |
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split_path = path.split(File::SEPARATOR) |
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File.join(split_path.take_while { |one_dir| one_dir !~ /^#{dir}$/ }[0..-2]) |
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end |
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private :previous_but_one_dir_to |
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|
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## |
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# Default gems locations allowed on FHS system (/usr, /usr/share). |
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# The locations are derived from directories specified during build |
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# configuration. |
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|
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def default_locations |
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@default_locations ||= { |
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:system => previous_but_one_dir_to(ConfigMap[:vendordir], ConfigMap[:RUBY_INSTALL_NAME]), |
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:local => previous_but_one_dir_to(ConfigMap[:sitedir], ConfigMap[:RUBY_INSTALL_NAME]) |
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} |
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end |
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|
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## |
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# For each location provides set of directories for binaries (:bin_dir) |
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# platform independent (:gem_dir) and dependent (:ext_dir) files. |
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|
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def default_dirs |
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@libdir ||= ConfigMap[:sitelibdir] == ConfigMap[:sitearchdir] ? ConfigMap[:datadir] : ConfigMap[:libdir] |
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@default_dirs ||= Hash[default_locations.collect do |destination, path| |
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[destination, { |
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:bin_dir => File.join(path, ConfigMap[:bindir].split(File::SEPARATOR).last), |
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:gem_dir => File.join(path, ConfigMap[:datadir].split(File::SEPARATOR).last, 'gems'), |
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:ext_dir => File.join(path, @libdir.split(File::SEPARATOR).last, 'gems') |
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}] |
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end] |
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end |
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|
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## |
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# Remove methods we are going to override. This avoids "method redefined;" |
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# warnings otherwise issued by Ruby. |
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|
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remove_method :default_dir if method_defined? :default_dir |
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remove_method :default_path if method_defined? :default_path |
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remove_method :default_bindir if method_defined? :default_bindir |
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remove_method :default_ext_dir_for if method_defined? :default_ext_dir_for |
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|
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## |
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# RubyGems default overrides. |
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|
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def default_dir |
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if Process.uid == 0 |
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Gem.default_dirs[:local][:gem_dir] |
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else |
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Gem.user_dir |
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end |
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end |
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|
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def default_path |
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path = default_dirs.collect {|location, paths| paths[:gem_dir]} |
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path.unshift Gem.user_dir if File.exist? Gem.user_home |
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end |
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|
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def default_bindir |
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if Process.uid == 0 |
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Gem.default_dirs[:local][:bin_dir] |
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else |
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File.join [Dir.home, 'bin'] |
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end |
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end |
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|
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def default_ext_dir_for base_dir |
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dirs = Gem.default_dirs.detect {|location, paths| paths[:gem_dir] == base_dir} |
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dirs && File.join(dirs.last[:ext_dir], RbConfig::CONFIG['RUBY_INSTALL_NAME']) |
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end |
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end |
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end |
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