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#--
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
# All rights reserved.
# See LICENSE.txt for permissions.
#++
require 'rubygems/specification'
require 'rubygems/deprecate'
##
# The SourceIndex object indexes all the gems available from a
# particular source (e.g. a list of gem directories, or a remote
# source). A SourceIndex maps a gem full name to a gem
# specification.
#
# NOTE:: The class used to be named Cache, but that became
# confusing when cached source fetchers where introduced. The
# constant Gem::Cache is an alias for this class to allow old
# YAMLized source index objects to load properly.
class Gem::SourceIndex
include Enumerable
attr_reader :gems # :nodoc:
##
# Directories to use to refresh this SourceIndex when calling refresh!
attr_accessor :spec_dirs
##
# Factory method to construct a source index instance for a given
# path.
#
# deprecated::
# If supplied, from_installed_gems will act just like
# +from_gems_in+. This argument is deprecated and is provided
# just for backwards compatibility, and should not generally
# be used.
#
# return::
# SourceIndex instance
def self.from_installed_gems(*deprecated)
if deprecated.empty?
from_gems_in(*installed_spec_directories)
else
warn "NOTE: from_installed_gems(arg) is deprecated. From #{caller.first}"
from_gems_in(*deprecated) # HACK warn
end
end
##
# Returns a list of directories from Gem.path that contain specifications.
def self.installed_spec_directories
# TODO: move to Gem::Utils
Gem.path.collect { |dir| File.join(dir, "specifications") }
end
##
# Creates a new SourceIndex from the ruby format gem specifications in
# +spec_dirs+.
def self.from_gems_in(*spec_dirs)
new spec_dirs
end
##
# Loads a ruby-format specification from +file_name+ and returns the
# loaded spec.
def self.load_specification(file_name)
Gem::Deprecate.skip_during do
Gem::Specification.load Gem::Path.new(file_name)
end
end
##
# Constructs a source index instance from the provided specifications, which
# is a Hash of gem full names and Gem::Specifications.
def initialize specs_or_dirs = []
@gems = {}
@spec_dirs = nil
case specs_or_dirs
when Hash then
specs_or_dirs.each do |full_name, spec|
add_spec spec
end
when Array, String then
self.spec_dirs = Array(specs_or_dirs)
refresh!
else
arg = specs_or_dirs.inspect
warn "NOTE: SourceIndex.new(#{arg}) is deprecated; From #{caller.first}."
end
end
def all_gems
gems
end
def prerelease_gems
@gems.reject { |name, gem| !gem.version.prerelease? }
end
def released_gems
@gems.reject { |name, gem| gem.version.prerelease? }
end
##
# Reconstruct the source index from the specifications in +spec_dirs+.
def load_gems_in(*spec_dirs)
@gems.clear
spec_dirs.reverse_each do |spec_dir|
spec_files = Dir[File.join(spec_dir, "*.gemspec")]
spec_files.each do |spec_file|
gemspec = Gem::Deprecate.skip_during do
Gem::Specification.load spec_file
end
add_spec gemspec if gemspec
end
end
self
end
##
# Returns an Array specifications for the latest released versions
# of each gem in this index.
def latest_specs(include_prerelease=false)
result = Hash.new { |h,k| h[k] = [] }
latest = {}
sort.each do |_, spec|
name = spec.name
curr_ver = spec.version
prev_ver = latest.key?(name) ? latest[name].version : nil
next if !include_prerelease && curr_ver.prerelease?
next unless prev_ver.nil? or curr_ver >= prev_ver or
latest[name].platform != Gem::Platform::RUBY
if prev_ver.nil? or
(curr_ver > prev_ver and spec.platform == Gem::Platform::RUBY) then
result[name].clear
latest[name] = spec
end
if spec.platform != Gem::Platform::RUBY then
result[name].delete_if do |result_spec|
result_spec.platform == spec.platform
end
end
result[name] << spec
end
result.values.flatten
end
##
# An array including only the prerelease gemspecs
def prerelease_specs
prerelease_gems.values
end
##
# An array including only the released gemspecs
def released_specs
released_gems.values
end
##
# Add a gem specification to the source index.
def add_spec(gem_spec, name = gem_spec.full_name)
# No idea why, but the Indexer wants to insert them using original_name
# instead of full_name. So we make it an optional arg.
@gems[name] = gem_spec
end
##
# Add gem specifications to the source index.
def add_specs(*gem_specs)
Gem::Deprecate.skip_during do
gem_specs.each do |spec|
add_spec spec
end
end
end
##
# Remove a gem specification named +full_name+.
def remove_spec(full_name)
@gems.delete full_name
end
##
# Iterate over the specifications in the source index.
def each(&block) # :yields: gem.full_name, gem
@gems.each(&block)
end
##
# The gem specification given a full gem spec name.
def specification(full_name)
@gems[full_name]
end
##
# The signature for the source index. Changes in the signature indicate a
# change in the index.
def index_signature
require 'digest'
Digest::SHA256.new.hexdigest(@gems.keys.sort.join(',')).to_s
end
##
# The signature for the given gem specification.
def gem_signature(gem_full_name)
require 'digest'
Digest::SHA256.new.hexdigest(@gems[gem_full_name].to_yaml).to_s
end
def size
@gems.size
end
alias length size
##
# Find a gem by an exact match on the short name.
def find_name(gem_name, requirement = Gem::Requirement.default)
dep = Gem::Dependency.new gem_name, requirement
Gem::Deprecate.skip_during do
search dep
end
end
##
# Search for a gem by Gem::Dependency +gem_pattern+. If +only_platform+
# is true, only gems matching Gem::Platform.local will be returned. An
# Array of matching Gem::Specification objects is returned.
#
# For backwards compatibility, a String or Regexp pattern may be passed as
# +gem_pattern+, and a Gem::Requirement for +platform_only+. This
# behavior is deprecated and will be removed.
def search(gem_pattern, platform_or_requirement = false)
requirement = nil
only_platform = false # FIX: WTF is this?!?
# TODO - Remove support and warning for legacy arguments after 2008/11
unless Gem::Dependency === gem_pattern
warn "#{Gem.location_of_caller.join ':'}:Warning: Gem::SourceIndex#search support for #{gem_pattern.class} patterns is deprecated, use #find_name"
end
case gem_pattern
when Regexp then
requirement = platform_or_requirement || Gem::Requirement.default
when Gem::Dependency then
only_platform = platform_or_requirement
requirement = gem_pattern.requirement
gem_pattern = if Regexp === gem_pattern.name then
gem_pattern.name
elsif gem_pattern.name.empty? then
//
else
/^#{Regexp.escape gem_pattern.name}$/
end
else
requirement = platform_or_requirement || Gem::Requirement.default
gem_pattern = /#{gem_pattern}/i
end
unless Gem::Requirement === requirement then
requirement = Gem::Requirement.create requirement
end
specs = @gems.values.select do |spec|
spec.name =~ gem_pattern and
requirement.satisfied_by? spec.version
end
if only_platform then
specs = specs.select do |spec|
Gem::Platform.match spec.platform
end
end
specs.sort_by { |s| s.sort_obj }
end
##
# Replaces the gems in the source index from specifications in the
# directories this source index was created from. Raises an exception if
# this source index wasn't created from a directory (via from_gems_in or
# from_installed_gems, or having spec_dirs set).
def refresh!
raise 'source index not created from disk' if @spec_dirs.nil?
load_gems_in(*@spec_dirs)
end
##
# Returns an Array of Gem::Specifications that are not up to date.
def outdated
outdateds = []
latest_specs.each do |local|
dependency = Gem::Dependency.new local.name, ">= #{local.version}"
fetcher = Gem::SpecFetcher.fetcher
remotes = fetcher.find_matching dependency
remotes = remotes.map { |(_, version, _), _| version }
latest = remotes.sort.last
outdateds << local.name if latest and local.version < latest
end
outdateds
end
def ==(other) # :nodoc:
self.class === other and @gems == other.gems
end
def dump
Marshal.dump(self)
end
end
# :stopdoc:
module Gem
##
# Cache is an alias for SourceIndex to allow older YAMLized source index
# objects to load properly.
Cache = SourceIndex
end
class Gem::SourceIndex
extend Gem::Deprecate
deprecate :all_gems, :none, 2011, 10
deprecate :==, :none, 2011, 11 # noisy
deprecate :add_specs, :none, 2011, 11 # noisy
deprecate :each, :none, 2011, 11
deprecate :gems, :none, 2011, 11
deprecate :load_gems_in, :none, 2011, 11
deprecate :refresh!, :none, 2011, 11
deprecate :spec_dirs=, "Specification.dirs=", 2011, 11 # noisy
deprecate :add_spec, "Specification.add_spec", 2011, 11
deprecate :find_name, "Specification.find_by_name", 2011, 11
deprecate :gem_signature, :none, 2011, 11
deprecate :index_signature, :none, 2011, 11
deprecate :initialize, :none, 2011, 11
deprecate :latest_specs, "Specification.latest_specs", 2011, 11
deprecate :length, "Specification.all.length", 2011, 11
deprecate :outdated, :none, 2011, 11
deprecate :prerelease_gems, :none, 2011, 11
deprecate :prerelease_specs, :none, 2011, 11
deprecate :released_gems, :none, 2011, 11
deprecate :released_specs, :none, 2011, 11
deprecate :remove_spec, "Specification.remove_spec", 2011, 11
deprecate :search, :none, 2011, 11
deprecate :size, "Specification.all.size", 2011, 11
deprecate :spec_dirs, "Specification.dirs", 2011, 11
deprecate :specification, "Specification.find", 2011, 11
class << self
extend Gem::Deprecate
deprecate :from_gems_in, :none, 2011, 10
deprecate :from_installed_gems, :none, 2011, 10
deprecate :installed_spec_directories, "Specification.dirs", 2011, 11
deprecate :load_specification, :none, 2011, 10
end
end
# :startdoc: