Class: Gem::SourceIndex

Inherits:
Object
  • Object
show all
Defined in:
lib/sprout/generator/base_mixins.rb

Instance Method Summary collapse

Instance Method Details

#sprout_search(gem_pattern, platform_only = false) ⇒ Object

This feature seems to be getting deprecated from the latest gems releases (1.3.x). We actually need it and don’t want the nagging - so, copied sources from RubyGems SVN trunk, and mixing in… :-( There should be a more stable integration point with RubyGems Any ideas or contributions are welcome!



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# File 'lib/sprout/generator/base_mixins.rb', line 11

def sprout_search(gem_pattern, platform_only = false)
  version_requirement = nil
  only_platform = false

  # unless Gem::Dependency === gem_pattern
  #   warn "#{Gem.location_of_caller.join ':'}:Warning: Gem::SourceIndex#search support for #{gem_pattern.class} patterns is deprecated"
  # end

  case gem_pattern
  when Regexp then
    version_requirement = platform_only || Gem::Requirement.default
  when Gem::Dependency then
    only_platform = platform_only
    version_requirement = gem_pattern.version_requirements
    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
    version_requirement = platform_only || Gem::Requirement.default
    gem_pattern = /#{gem_pattern}/i
  end

  unless Gem::Requirement === version_requirement then
    version_requirement = Gem::Requirement.create version_requirement
  end

  specs = @gems.values.select do |spec|
    spec.name =~ gem_pattern and
      version_requirement.satisfied_by? spec.version
  end

  if only_platform then
    specs = specs.select do |spec|
      Gem::Platform.match spec.platform
    end
  end
  
  begin
    specs.sort_by { |s| s.sort_obj }
  rescue NoMethodError => e
    puts "It looks like your RubyGems installation is not compatible with this version of Sprouts.\n\nTo update, run:\ngem update --system\n\n"
    raise e
  end
end