module Gem
RubyGems is the Ruby standard for publishing and managing third party libraries.
For user documentation, see:
-
gem help
andgem help [command]
For gem developer documentation see:
-
Gem::Version for version dependency notes
Further RubyGems documentation can be found at:
-
RubyGems API (also available from
gem server
)
RubyGems Plugins¶ ↑
As of RubyGems 1.3.2, RubyGems will load plugins installed in gems or $LOAD_PATH. Plugins must be named 'rubygems_plugin' (.rb, .so, etc) and placed at the root of your gem's require_path. Plugins are discovered via ::find_files then loaded. Take care when implementing a plugin as your plugin file may be loaded multiple times if multiple versions of your gem are installed.
For an example plugin, see the graph gem which adds a `gem graph` command.
RubyGems Defaults, Packaging¶ ↑
RubyGems defaults are stored in rubygems/defaults.rb. If you're packaging RubyGems or implementing Ruby you can change RubyGems' defaults.
For RubyGems packagers, provide lib/rubygems/operating_system.rb and override any defaults from lib/rubygems/defaults.rb.
For Ruby implementers, provide lib/rubygems/defaults/#{RUBY_ENGINE}.rb and override any defaults from lib/rubygems/defaults.rb.
If you need RubyGems to perform extra work on install or uninstall, your defaults override file can set pre and post install and uninstall hooks. See ::pre_install, ::pre_uninstall, ::post_install, ::post_uninstall.
Bugs¶ ↑
You can submit bugs to the RubyGems bug tracker on GitHub
Credits¶ ↑
RubyGems is currently maintained by Eric Hodel.
RubyGems was originally developed at RubyConf 2003 by:
-
Rich Kilmer – rich(at)infoether.com
-
Chad Fowler – chad(at)chadfowler.com
-
David Black – dblack(at)wobblini.net
-
Paul Brannan – paul(at)atdesk.com
-
Jim Weirch – jim(at)weirichhouse.org
Contributors:
-
Gavin Sinclair – gsinclair(at)soyabean.com.au
-
George Marrows – george.marrows(at)ntlworld.com
-
Dick Davies – rasputnik(at)hellooperator.net
-
Mauricio Fernandez – batsman.geo(at)yahoo.com
-
Simon Strandgaard – neoneye(at)adslhome.dk
-
Dave Glasser – glasser(at)mit.edu
-
Paul Duncan – pabs(at)pablotron.org
-
Ville Aine – vaine(at)cs.helsinki.fi
-
Eric Hodel – drbrain(at)segment7.net
-
Daniel Berger – djberg96(at)gmail.com
-
Phil Hagelberg – technomancy(at)gmail.com
-
Ryan Davis – ryand-ruby(at)zenspider.com
-
Evan Phoenix – evan(at)fallingsnow.net
-
Steve Klabnik – steve(at)steveklabnik.com
(If your name is missing, PLEASE let us know!)
See LICENSE.txt for permissions.
Thanks!
-The RubyGems Team
Constants
- DEFAULT_HOST
- GEM_DEP_FILES
- List
- MARSHAL_SPEC_DIR
Location of Marshal quick gemspecs on remote repositories
- RDoc
Gem::RDoc provides methods to generate RDoc and ri data for installed gems upon gem installation.
This file is automatically required by RubyGems 1.9 and newer.
- REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES
Subdirectories in a gem repository for default gems
- REPOSITORY_SUBDIRECTORIES
Subdirectories in a gem repository
- RUBYGEMS_DIR
- VERSION
- WIN_PATTERNS
An Array of Regexps that match windows Ruby platforms.
Attributes
The list of hooks to be run after Gem::DependencyInstaller installs a set of gems
Hash of loaded Gem::Specification keyed by name
The list of hooks to be run after Gem::Installer#install extracts files and builds extensions
The list of hooks to be run after Gem::Installer#install completes installation
The list of hooks to be run after Gem::Specification.reset is run.
The list of hooks to be run after Gem::Uninstaller#uninstall completes installation
The list of hooks to be run before Gem::Installer#install does any work
The list of hooks to be run before Gem::Specification.reset is run.
The list of hooks to be run before Gem::Uninstaller#uninstall does any work
Public Class Methods
Find the full path to the executable for gem
name
. If the exec_name
is not given, the
gem's default_executable is chosen, otherwise the specified
executable's path is returned. requirements
allows you to
specify specific gem versions.
# File lib/rubygems.rb, line 223 def self.bin_path(name, exec_name = nil, *requirements) # TODO: fails test_self_bin_path_bin_file_gone_in_latest # Gem::Specification.find_by_name(name, *requirements).bin_file exec_name raise ArgumentError, "you must supply exec_name" unless exec_name requirements = Gem::Requirement.default if requirements.empty? specs = Gem::Dependency.new(name, requirements).matching_specs(true) raise Gem::GemNotFoundException, "can't find gem #{name} (#{requirements})" if specs.empty? specs = specs.find_all { |spec| spec.executables.include? exec_name } if exec_name unless spec = specs.last msg = "can't find gem #{name} (#{requirements}) with executable #{exec_name}" raise Gem::GemNotFoundException, msg end spec.bin_file exec_name end
The mode needed to read a file as straight binary.
# File lib/rubygems.rb, line 252 def self.binary_mode 'rb' end
The path where gem executables are to be installed.
# File lib/rubygems.rb, line 259 def self.bindir(install_dir=Gem.dir) return File.join install_dir, 'bin' unless install_dir.to_s == Gem.default_dir.to_s Gem.default_bindir end
Clear default gem related variables. It is for test
# File lib/rubygems.rb, line 1110 def clear_default_specs @path_to_default_spec_map.clear end
Reset the dir
and path
values. The next time
dir
or path
is requested, the values will be
calculated from scratch. This is mainly used by the unit tests to provide
test isolation.
# File lib/rubygems.rb, line 270 def self.clear_paths @paths = nil @user_home = nil Gem::Specification.reset Gem::Security.reset if defined?(Gem::Security) end
The path to standard location of the user's .gemrc file.
# File lib/rubygems.rb, line 280 def self.config_file @config_file ||= File.join Gem.user_home, '.gemrc' end
The standard configuration object for gems.
# File lib/rubygems.rb, line 287 def self.configuration @configuration ||= Gem::ConfigFile.new [] end
Use the given configuration object (which implements the ConfigFile protocol) as the standard configuration object.
# File lib/rubygems.rb, line 295 def self.configuration=(config) @configuration = config end
The path the the data directory specified by the gem name. If the package is not available as a gem, return nil.
# File lib/rubygems.rb, line 303 def self.datadir(gem_name) # TODO: deprecate and move to Gem::Specification # and drop the extra ", gem_name" which is uselessly redundant spec = @loaded_specs[gem_name] return nil if spec.nil? File.join spec.full_gem_path, "data", gem_name end
The default directory for binaries
# File lib/rubygems/defaults.rb, line 116 def self.default_bindir if defined? RUBY_FRAMEWORK_VERSION then # mac framework support '/usr/bin' else # generic install RbConfig::CONFIG['bindir'] end end
The default signing certificate chain path
# File lib/rubygems/defaults.rb, line 145 def self.default_cert_path File.join Gem.user_home, ".gem", "gem-public_cert.pem" end
Default home directory path to be used if an alternate value is not specified in the environment
# File lib/rubygems/defaults.rb, line 29 def self.default_dir path = if defined? RUBY_FRAMEWORK_VERSION then [ File.dirname(RbConfig::CONFIG['sitedir']), 'Gems', RbConfig::CONFIG['ruby_version'] ] elsif RbConfig::CONFIG['rubylibprefix'] then [ RbConfig::CONFIG['rubylibprefix'], 'gems', RbConfig::CONFIG['ruby_version'] ] else [ RbConfig::CONFIG['libdir'], ruby_engine, 'gems', RbConfig::CONFIG['ruby_version'] ] end @default_dir ||= File.join(*path) end
Deduce Ruby's –program-prefix and –program-suffix from its install name
# File lib/rubygems/defaults.rb, line 102 def self.default_exec_format exec_format = RbConfig::CONFIG['ruby_install_name'].sub('ruby', '%s') rescue '%s' unless exec_format =~ /%s/ then raise Gem::Exception, "[BUG] invalid exec_format #{exec_format.inspect}, no %s" end exec_format end
Returns binary extensions dir for specified RubyGems base dir or nil if such directory cannot be determined.
By default, the binary extensions are located side by side with their Ruby counterparts, therefore nil is returned
# File lib/rubygems/defaults.rb, line 61 def self.default_ext_dir_for base_dir nil end
Whether to expect full paths in default gems - true for non-MRI ruby implementations
# File lib/rubygems/defaults.rb, line 152 def self.default_gems_use_full_paths? ruby_engine != 'ruby' end
The default signing key path
# File lib/rubygems/defaults.rb, line 138 def self.default_key_path File.join Gem.user_home, ".gem", "gem-private_key.pem" end
Default gem load path
# File lib/rubygems/defaults.rb, line 91 def self.default_path if Gem.user_home && File.exist?(Gem.user_home) then [user_dir, default_dir] else [default_dir] end end
Paths where RubyGems' .rb files and bin files are installed
# File lib/rubygems/defaults.rb, line 68 def self.default_rubygems_dirs nil # default to standard layout end
An Array of the default sources that come with RubyGems
# File lib/rubygems/defaults.rb, line 13 def self.default_sources %w[https://rubygems.org/] end
Default spec directory path to be used if an alternate value is not specified in the environment
# File lib/rubygems/defaults.rb, line 21 def self.default_spec_cache_dir File.join Gem.user_home, '.gem', 'specs' end
A Zlib::Deflate.deflate wrapper
# File lib/rubygems.rb, line 314 def self.deflate(data) require 'zlib' Zlib::Deflate.deflate data end
The path where gems are to be installed.
# File lib/rubygems.rb, line 341 def self.dir paths.home end
Adds a post-installs hook that will be passed a Gem::DependencyInstaller and a list of installed specifications when Gem::DependencyInstaller#install is complete
# File lib/rubygems.rb, line 690 def self.done_installing(&hook) @done_installing_hooks << hook end
Quietly ensure the Gem directory dir
contains all the proper
subdirectories for handling default gems. If we can't create a
directory due to a permission problem, then we will silently continue.
If mode
is given, missing directories are created with this
mode.
World-writable directories will never be created.
# File lib/rubygems.rb, line 375 def self.ensure_default_gem_subdirectories dir = Gem.dir, mode = nil ensure_subdirectories(dir, mode, REPOSITORY_DEFAULT_GEM_SUBDIRECTORIES) end
Quietly ensure the Gem directory dir
contains all the proper
subdirectories. If we can't create a directory due to a permission
problem, then we will silently continue.
If mode
is given, missing directories are created with this
mode.
World-writable directories will never be created.
# File lib/rubygems.rb, line 362 def self.ensure_gem_subdirectories dir = Gem.dir, mode = nil ensure_subdirectories(dir, mode, REPOSITORY_SUBDIRECTORIES) end
Returns a list of paths matching glob
that can be used by a
gem to pick up features from other gems. For example:
Gem.find_files('rdoc/discover').each do |path| load path end
if check_load_path
is true (the default), then ::find_files also searches
$LOAD_PATH for files as well as gems.
Note that ::find_files will return all files even if they are from different versions of the same gem. See also ::find_latest_files
# File lib/rubygems.rb, line 422 def self.find_files(glob, check_load_path=true) files = [] files = find_files_from_load_path glob if check_load_path files.concat Gem::Specification.map { |spec| spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}") }.flatten # $LOAD_PATH might contain duplicate entries or reference # the spec dirs directly, so we prune. files.uniq! if check_load_path return files end
Returns a list of paths matching glob
from the latest gems
that can be used by a gem to pick up features from other gems. For
example:
Gem.find_latest_files('rdoc/discover').each do |path| load path end
if check_load_path
is true (the default), then ::find_latest_files also
searches $LOAD_PATH for files as well as gems.
Unlike ::find_files, ::find_latest_files will return only files from the latest version of a gem.
# File lib/rubygems.rb, line 456 def self.find_latest_files(glob, check_load_path=true) files = [] files = find_files_from_load_path glob if check_load_path files.concat Gem::Specification.latest_specs(true).map { |spec| spec.matches_for_glob("#{glob}#{Gem.suffix_pattern}") }.flatten # $LOAD_PATH might contain duplicate entries or reference # the spec dirs directly, so we prune. files.uniq! if check_load_path return files end
Find a Gem::Specification of default gem from
path
# File lib/rubygems.rb, line 1089 def find_unresolved_default_spec(path) Gem.suffixes.each do |suffix| spec = @path_to_default_spec_map["#{path}#{suffix}"] return spec if spec end nil end
# File lib/rubygems.rb, line 209 def self.finish_resolve(request_set=Gem::RequestSet.new) request_set.import Gem::Specification.unresolved_deps.values request_set.resolve_current.each do |s| s.full_spec.activate end end
Zlib::GzipReader wrapper that unzips
data
.
# File lib/rubygems.rb, line 517 def self.gunzip(data) require 'rubygems/util' Gem::Util.gunzip data end
Zlib::GzipWriter wrapper that zips
data
.
# File lib/rubygems.rb, line 525 def self.gzip(data) require 'rubygems/util' Gem::Util.gzip data end
Get the default RubyGems API host. This is normally
https://rubygems.org
.
# File lib/rubygems.rb, line 557 def self.host # TODO: move to utils @host ||= Gem::DEFAULT_HOST end
Set the default RubyGems API host.
# File lib/rubygems.rb, line 564 def self.host= host # TODO: move to utils @host = host end
A Zlib::Inflate#inflate wrapper
# File lib/rubygems.rb, line 533 def self.inflate(data) require 'rubygems/util' Gem::Util.inflate data end
Top level install helper method. Allows you to install gems interactively:
% irb >> Gem.install "minitest" Fetching: minitest-3.0.1.gem (100%) => [#<Gem::Specification:0x1013b4528 @name="minitest", ...>]
# File lib/rubygems.rb, line 546 def self.install name, version = Gem::Requirement.default require "rubygems/dependency_installer" inst = Gem::DependencyInstaller.new inst.install name, version inst.installed_gems end
Returns the latest release version of RubyGems.
# File lib/rubygems.rb, line 810 def self.latest_rubygems_version latest_version_for('rubygems-update') or raise "Can't find 'rubygems-update' in any repo. Check `gem source list`." end
Returns the latest release-version specification for the gem
name
.
# File lib/rubygems.rb, line 797 def self.latest_spec_for name dependency = Gem::Dependency.new name fetcher = Gem::SpecFetcher.fetcher spec_tuples, = fetcher.spec_for_dependency dependency spec, = spec_tuples.first spec end
Returns the version of the latest release-version of gem name
# File lib/rubygems.rb, line 818 def self.latest_version_for name spec = latest_spec_for name spec and spec.version end
Find all 'rubygems_plugin' files in $LOAD_PATH and load them
# File lib/rubygems.rb, line 981 def self.load_env_plugins path = "rubygems_plugin" files = [] $LOAD_PATH.each do |load_path| globbed = Dir["#{File.expand_path path, load_path}#{Gem.suffix_pattern}"] globbed.each do |load_path_file| files << load_path_file if File.file?(load_path_file.untaint) end end load_plugin_files files end
The index to insert activated gem paths into the $LOAD_PATH. The activated gem's paths are inserted before site lib directory by default.
# File lib/rubygems.rb, line 573 def self.load_path_insert_index index = $LOAD_PATH.index RbConfig::CONFIG['sitelibdir'] index end
Find the 'rubygems_plugin' files in the latest installed gems and load them
# File lib/rubygems.rb, line 969 def self.load_plugins # Remove this env var by at least 3.0 if ENV['RUBYGEMS_LOAD_ALL_PLUGINS'] load_plugin_files find_files('rubygems_plugin', false) else load_plugin_files find_latest_files('rubygems_plugin', false) end end
Loads YAML, preferring Psych
# File lib/rubygems.rb, line 584 def self.load_yaml return if @yaml_loaded return unless defined?(gem) test_syck = ENV['TEST_SYCK'] unless test_syck begin gem 'psych', '~> 1.2', '>= 1.2.1' rescue Gem::LoadError # It's OK if the user does not have the psych gem installed. We will # attempt to require the stdlib version end begin # Try requiring the gem version *or* stdlib version of psych. require 'psych' rescue ::LoadError # If we can't load psych, thats fine, go on. else # If 'yaml' has already been required, then we have to # be sure to switch it over to the newly loaded psych. if defined?(YAML::ENGINE) && YAML::ENGINE.yamler != "psych" YAML::ENGINE.yamler = "psych" end require 'rubygems/psych_additions' require 'rubygems/psych_tree' end end require 'yaml' # If we're supposed to be using syck, then we may have to force # activate it via the YAML::ENGINE API. if test_syck and defined?(YAML::ENGINE) YAML::ENGINE.yamler = "syck" unless YAML::ENGINE.syck? end # Now that we're sure some kind of yaml library is loaded, pull # in our hack to deal with Syck's DefaultKey ugliness. require 'rubygems/syck_hack' @yaml_loaded = true end
The file name and line number of the caller of the caller of this method.
# File lib/rubygems.rb, line 633 def self.location_of_caller caller[1] =~ /(.*?):(\d+).*?$/i file = $1 lineno = $2.to_i [file, lineno] end
The version of the Marshal format for your Ruby.
# File lib/rubygems.rb, line 644 def self.marshal_version "#{Marshal::MAJOR_VERSION}.#{Marshal::MINOR_VERSION}" end
# File lib/rubygems.rb, line 201 def self.needs rs = Gem::RequestSet.new yield rs finish_resolve rs end
# File lib/rubygems.rb, line 345 def self.path paths.path end
How String Gem paths should be split. Overridable for esoteric platforms.
# File lib/rubygems/defaults.rb, line 84 def self.path_separator File::PATH_SEPARATOR end
Retrieve the PathSupport object that RubyGems uses to lookup files.
# File lib/rubygems.rb, line 322 def self.paths @paths ||= Gem::PathSupport.new end
Initialize the filesystem paths to use from env
.
env
is a hash-like object (typically ENV) that is queried for 'GEM_HOME',
'GEM_PATH', and 'GEM_SPEC_CACHE'
# File lib/rubygems.rb, line 330 def self.paths=(env) clear_paths @paths = Gem::PathSupport.new env Gem::Specification.dirs = @paths.path end
Array of platforms this RubyGems supports.
# File lib/rubygems.rb, line 658 def self.platforms @platforms ||= [] if @platforms.empty? @platforms = [Gem::Platform::RUBY, Gem::Platform.local] end @platforms end
Set array of platforms this RubyGems supports (primarily for testing).
# File lib/rubygems.rb, line 651 def self.platforms=(platforms) @platforms = platforms end
Adds a post-build hook that will be passed an Gem::Installer instance when Gem::Installer#install is
called. The hook is called after the gem has been extracted and extensions
have been built but before the executables or gemspec has been written. If
the hook returns false
then the gem's files will be
removed and the install will be aborted.
# File lib/rubygems.rb, line 673 def self.post_build(&hook) @post_build_hooks << hook end
Adds a post-install hook that will be passed an Gem::Installer instance when Gem::Installer#install is called
# File lib/rubygems.rb, line 681 def self.post_install(&hook) @post_install_hooks << hook end
Adds a hook that will get run after Gem::Specification.reset is run.
# File lib/rubygems.rb, line 698 def self.post_reset(&hook) @post_reset_hooks << hook end
Adds a post-uninstall hook that will be passed a Gem::Uninstaller instance and the spec that was uninstalled when Gem::Uninstaller#uninstall is called
# File lib/rubygems.rb, line 707 def self.post_uninstall(&hook) @post_uninstall_hooks << hook end
Adds a pre-install hook that will be passed an Gem::Installer instance when Gem::Installer#install is
called. If the hook returns false
then the install will be
aborted.
# File lib/rubygems.rb, line 716 def self.pre_install(&hook) @pre_install_hooks << hook end
Adds a hook that will get run before Gem::Specification.reset is run.
# File lib/rubygems.rb, line 724 def self.pre_reset(&hook) @pre_reset_hooks << hook end
Adds a pre-uninstall hook that will be passed an Gem::Uninstaller instance and the spec that will be uninstalled when Gem::Uninstaller#uninstall is called
# File lib/rubygems.rb, line 733 def self.pre_uninstall(&hook) @pre_uninstall_hooks << hook end
The directory prefix this RubyGems was installed at. If your prefix is in a standard location (ie, rubygems is installed where you'd expect it to be), then prefix returns nil.
# File lib/rubygems.rb, line 742 def self.prefix prefix = File.dirname RUBYGEMS_DIR if prefix != File.expand_path(RbConfig::CONFIG['sitelibdir']) and prefix != File.expand_path(RbConfig::CONFIG['libdir']) and 'lib' == File.basename(RUBYGEMS_DIR) then prefix end end
Safely read a file in binary mode on all platforms.
# File lib/rubygems.rb, line 762 def self.read_binary(path) open path, 'rb+' do |f| f.flock(File::LOCK_EX) f.read end rescue Errno::EACCES open path, 'rb' do |f| f.read end end
Refresh available gems from disk.
# File lib/rubygems.rb, line 755 def self.refresh Gem::Specification.reset end
Register a Gem::Specification for default gem.
Two formats for the specification are supported:
-
MRI 2.0 style, where spec.files contains unprefixed require names. The spec's filenames will be registered as-is.
-
New style, where spec.files contains files prefixed with paths from spec.require_paths. The prefixes are stripped before registering the spec's filenames. Unprefixed files are omitted.
# File lib/rubygems.rb, line 1068 def register_default_spec(spec) new_format = Gem.default_gems_use_full_paths? || spec.require_paths.any? {|path| spec.files.any? {|f| f.start_with? path } } if new_format prefix_group = spec.require_paths.map {|f| f + "/"}.join("|") prefix_pattern = /^(#{prefix_group})/ end spec.files.each do |file| if new_format file = file.sub(prefix_pattern, "") next unless $~ end @path_to_default_spec_map[file] = spec end end
Remove needless Gem::Specification of default gem from unresolved default gem list
# File lib/rubygems.rb, line 1101 def remove_unresolved_default_spec(spec) spec.files.each do |file| @path_to_default_spec_map.delete(file) end end
The path to the running Ruby interpreter.
# File lib/rubygems.rb, line 776 def self.ruby if @ruby.nil? then @ruby = File.join(RbConfig::CONFIG['bindir'], "#{RbConfig::CONFIG['ruby_install_name']}#{RbConfig::CONFIG['EXEEXT']}") @ruby = "\"#{@ruby}\"" if @ruby =~ /\s/ end @ruby end
Allows setting path to Ruby. This method is available when requiring 'rubygems/test_case'
# File lib/rubygems/test_case.rb, line 66 def self.ruby= ruby @ruby = ruby end
Returns a String containing the API compatibility version of Ruby
# File lib/rubygems.rb, line 790 def self.ruby_api_version @ruby_api_version ||= RbConfig::CONFIG['ruby_version'].dup end
A wrapper around RUBY_ENGINE const that may not be defined
# File lib/rubygems/defaults.rb, line 127 def self.ruby_engine if defined? RUBY_ENGINE then RUBY_ENGINE else 'ruby' end end
A Gem::Version for the currently running Ruby.
# File lib/rubygems.rb, line 826 def self.ruby_version return @ruby_version if defined? @ruby_version version = RUBY_VERSION.dup if defined?(RUBY_PATCHLEVEL) && RUBY_PATCHLEVEL != -1 then version << ".#{RUBY_PATCHLEVEL}" elsif defined?(RUBY_REVISION) then version << ".dev.#{RUBY_REVISION}" end @ruby_version = Gem::Version.new version end
A Gem::Version for the currently running RubyGems
# File lib/rubygems.rb, line 842 def self.rubygems_version return @rubygems_version if defined? @rubygems_version @rubygems_version = Gem::Version.new Gem::VERSION end
Allows setting the gem path searcher. This method is available when requiring 'rubygems/test_case'
# File lib/rubygems/test_case.rb, line 50 def self.searcher=(searcher) @searcher = searcher end
Returns an Array of sources to fetch remote gems from. Uses ::default_sources if the sources list is empty.
# File lib/rubygems.rb, line 851 def self.sources @sources ||= Gem::SourceList.from(default_sources) end
Need to be able to set the sources without calling ::sources.replace since that would cause an infinite loop.
DOC: This comment is not documentation about the method itself, it's more of a code comment about the implementation.
# File lib/rubygems.rb, line 862 def self.sources= new_sources if !new_sources @sources = nil else @sources = Gem::SourceList.from(new_sources) end end
# File lib/rubygems.rb, line 349 def self.spec_cache_dir paths.spec_cache_dir end
Glob pattern for require-able path suffixes.
# File lib/rubygems.rb, line 873 def self.suffix_pattern @suffix_pattern ||= "{#{suffixes.join(',')}}" end
Suffixes for require-able paths.
# File lib/rubygems.rb, line 880 def self.suffixes @suffixes ||= ['', '.rb', *%w(DLEXT DLEXT2).map { |key| val = RbConfig::CONFIG[key] next unless val and not val.empty? ".#{val}" } ].compact.uniq end
Prints the amount of time the supplied block takes to run using the debug UI output.
# File lib/rubygems.rb, line 895 def self.time(msg, width = 0, display = Gem.configuration.verbose) now = Time.now value = yield elapsed = Time.now - now ui.say "%2$*1$s: %3$3.3fs" % [-width, msg, elapsed] if display value end
Try to activate a gem containing path
. Returns true if
activation succeeded or wasn't needed because it was already activated.
Returns false if it can't find the path in a gem.
# File lib/rubygems.rb, line 177 def self.try_activate path # finds the _latest_ version... regardless of loaded specs and their deps # if another gem had a requirement that would mean we shouldn't # activate the latest version, then either it would already be activated # or if it was ambiguous (and thus unresolved) the code in our custom # require will try to activate the more specific version. spec = Gem::Specification.find_inactive_by_path path unless spec spec = Gem::Specification.find_by_path path return true if spec && spec.activated? return false end begin spec.activate rescue Gem::LoadError # this could fail due to gem dep collisions, go lax Gem::Specification.find_by_name(spec.name).activate end return true end
Lazily loads DefaultUserInteraction and returns the default UI.
# File lib/rubygems.rb, line 910 def self.ui require 'rubygems/user_interaction' Gem::DefaultUserInteraction.ui end
Looks for gem dependency files (gem.deps.rb, Gemfile, Isolate) from the current directory up and activates the gems in the first file found.
You can run this automatically when rubygems starts. To enable, set the
RUBYGEMS_GEMDEPS
environment variable to either the path of
your Gemfile or “-” to auto-discover in parent directories.
NOTE: Enabling automatic discovery on multiuser systems can lead to execution of arbitrary code when used from directories outside your control.
# File lib/rubygems.rb, line 1008 def self.use_gemdeps return unless path = ENV['RUBYGEMS_GEMDEPS'] path = path.dup if path == "-" then require 'rubygems/util' Gem::Util.traverse_parents Dir.pwd do |directory| dep_file = GEM_DEP_FILES.find { |f| File.file?(f) } next unless dep_file path = File.join directory, dep_file break end end path.untaint return unless File.file? path rs = Gem::RequestSet.new rs.load_gemdeps path rs.resolve_current.map do |s| sp = s.full_spec sp.activate sp end end
Use the home
and paths
values for ::dir and ::path. Used mainly by the unit tests to
provide environment isolation.
# File lib/rubygems.rb, line 920 def self.use_paths(home, *paths) paths = nil if paths == [nil] paths = paths.first if Array === Array(paths).first self.paths = { "GEM_HOME" => home, "GEM_PATH" => paths } end
Path for gems in the user's home directory
# File lib/rubygems/defaults.rb, line 75 def self.user_dir parts = [Gem.user_home, '.gem', ruby_engine] parts << RbConfig::CONFIG['ruby_version'] unless RbConfig::CONFIG['ruby_version'].empty? File.join parts end
The home directory for the user.
# File lib/rubygems.rb, line 929 def self.user_home @user_home ||= find_home.untaint end
Allows toggling Windows behavior. This method is available when requiring 'rubygems/test_case'
# File lib/rubygems/test_case.rb, line 58 def self.win_platform=(val) @@win_platform = val end
Is this a windows platform?
# File lib/rubygems.rb, line 936 def self.win_platform? if @@win_platform.nil? then ruby_platform = RbConfig::CONFIG['host_os'] @@win_platform = !!WIN_PATTERNS.find { |r| ruby_platform =~ r } end @@win_platform end
Private Class Methods
Finds the user's home directory.
# File lib/rubygems.rb, line 489 def self.find_home windows = File::ALT_SEPARATOR if not windows or RUBY_VERSION >= '1.9' then File.expand_path "~" else ['HOME', 'USERPROFILE'].each do |key| return File.expand_path ENV[key] if ENV[key] end if ENV['HOMEDRIVE'] && ENV['HOMEPATH'] then File.expand_path "#{ENV['HOMEDRIVE']}#{ENV['HOMEPATH']}" end end rescue if windows then File.expand_path File.join(ENV['HOMEDRIVE'] || ENV['SystemDrive'], '/') else File.expand_path "/" end end