find_spec_by_name_and_version(gem_name, version = Gem::Requirement.default, prerelease = false)
public
Finds a spec and the source_uri it came from for gem gem_name and
version. Returns an Array of specs and
sources required for installation of the gem.
# File lib/rubygems/dependency_installer.rb, line 279
def find_spec_by_name_and_version gem_name,
version = Gem::Requirement.default,
prerelease = false
set = Gem::AvailableSet.new
if consider_local?
if gem_name =~ /\.gem$/ and File.file? gem_name then
src = Gem::Source::SpecificFile.new(gem_name)
set.add src.spec, src
elsif gem_name =~ /\.gem$/ then
Dir[gem_name].each do |name|
begin
src = Gem::Source::SpecificFile.new name
set.add src.spec, src
rescue Gem::Package::FormatError
end
end
else
local = Gem::Source::Local.new
if s = local.find_gem(gem_name, version)
set.add s, local
end
end
end
if set.empty?
dep = Gem::Dependency.new gem_name, version
dep.prerelease = true if prerelease
set = find_gems_with_sources(dep, true)
set.match_platform!
end
if set.empty?
raise Gem::SpecificGemNotFoundException.new(gem_name, version, @errors)
end
@available = set
end