module Gem2Rpm

# File lib/gem2rpm.rb, line 44
def self.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.reset
  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)

  fail DownloadUrlError, 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 79
def self.packager
  packager = %x`rpmdev-packager 2> /dev/null`.chomp rescue ''

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

  if packager.empty? || (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 68
def self.print_dependencies(gemfile, out = $stdout)
  Gem2Rpm::Package.new(gemfile).spec.dependencies.each do |dep|
    Gem2Rpm::Dependency.new(dep).requirement.each do |r|
      out.puts "rubygem(#{dep.name}) #{r}"
    end
  end
end

# File lib/gem2rpm.rb, line 94
def self.rubygem_template
  Template.new(File.join(Template.default_location, "#{Distro.nature}.spec.erb"))
end

# File lib/gem2rpm.rb, line 98
def self.vagrant_plugin_template
  file = File.join(Template.default_location, "#{Distro.nature}-vagrant-plugin.spec.erb")
  Template.new(file)
end