module Gem2Rpm

# File lib/gem2rpm.rb, line 65
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 = Configuration.instance.reset

  runtime_dependencies = Gem2Rpm::RpmDependencyList.new(spec.runtime_dependencies)
  development_dependencies = Gem2Rpm::RpmDependencyList.new(spec.development_dependencies)

  tests = TestSuite.new(spec)

  files = RpmFileList.new(spec.files)
  main_files = files.top_level_entries.main_entries
  doc_files = files.top_level_entries.doc_entries

  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 47
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 108
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 100
def self.print_dependencies(gemfile, out = $stdout)
  dl = RpmDependencyList.new(Gem2Rpm::Package.new(gemfile).spec.dependencies)
  out.puts dl.virtualize.to_rpm
end

# File lib/gem2rpm.rb, line 123
def self.rubygem_template
  Template.new(File.join(Template.default_location, "#{Distro.nature}.spec.erb"))
end

# File lib/gem2rpm.rb, line 29
def self.show_message(message, obj = nil, out = $stderr)
  out.puts("#{message}\n\n")
  out.puts obj if obj
end

# File lib/gem2rpm.rb, line 34
def self.show_templates(out = $stdout)
  out.puts "Available templates in #{Gem2Rpm::Template.default_location}:\n\n"
  template_list = Gem2Rpm::Template.list.map do |t|
    t = t.gsub(/(.*)\.spec.erb/, '\1')
    t.gsub(/^/, t == Distro.nature ? '* ' : '  ')
  end.join("\n")
  out.puts template_list
end

# File lib/gem2rpm.rb, line 43
def self.show_version(out = $stdout)
  out.puts Gem2Rpm::VERSION
end

# File lib/gem2rpm.rb, line 127
def self.vagrant_plugin_template
  file = File.join(Template.default_location, "#{Distro.nature}-vagrant-plugin.spec.erb")
  Template.new(file)
end