module Gem2Rpm

# File lib/gem2rpm.rb, line 44
def Gem2Rpm.convert(fname, template, out=$stdout, nongem=true, local=false,
                    doc_subpackage = true)
  package = Gem2Rpm::Package.new(fname)
  # Deprecate, kept just for backward compatibility.
  format = Gem2Rpm::Format.new(package)
  spec = Gem2Rpm::Specification.new(package.spec)
  config = Gem2Rpm::Configuration.instance.to_default
  download_path = ""
  unless local
    begin
      download_path = find_download_url(spec.name, spec.version)
    rescue DownloadUrlError => e
      $stderr.puts "Warning: Could not retrieve full URL for #{spec.name}\nWarning: Edit the specfile and enter the full download URL as 'Source0' manually"
      $stderr.puts e.inspect
    end
  end

  erb = ERB.new(template.read, 0, '-')
  out.puts erb.result(binding)
rescue Gem::Exception => e
  puts e
end

# File lib/gem2rpm.rb, line 26
def self.find_download_url(name, version)
  dep = Gem::Dependency.new(name, "=#{version}")
  fetcher = Gem2Rpm::SpecFetcher.new(Gem::SpecFetcher.fetcher)

  spec_and_source, errors = fetcher.spec_for_dependency(dep, false)

  raise DownloadUrlError.new(errors.first.error.message) unless errors.empty?

  spec, source = spec_and_source.first

  if source && source.uri
    download_path = source.uri.to_s
    download_path += "gems/"
  end

  download_path
end

# File lib/gem2rpm.rb, line 70
def Gem2Rpm.packager()
  packager = %xrpmdev-packager 2> /dev/null`.chomp rescue ''

  if packager.empty?
    packager = %xrpm --eval '%{packager}' 2> /dev/null`.chomp rescue ''
  end

  if packager.empty? or packager == '%{packager}'
    passwd_entry = Etc::getpwnam(Etc::getlogin)
    packager = "#{(passwd_entry && passwd_entry.gecos) || Etc::getlogin } <#{Etc::getlogin}@#{Socket::gethostname}>"
  end

  packager
end

# File lib/gem2rpm.rb, line 85
def self.rubygem_template
  Template.new(File.join(Template::default_location, "#{Distro.nature.to_s}.spec.erb"))
end

# File lib/gem2rpm.rb, line 89
def self.vagrant_plugin_template
  file = File.join(Template::default_location, "#{Distro.nature.to_s}-vagrant-plugin.spec.erb")
  Template.new(file)
end