Move download functions into a module

Rakefile

@@ -30,7 +30,7 @@ task :composer, [:version] do |_, arguments|
     homepage: 'https://getcomposer.org/'
 
   uri = "https://getcomposer.org/download/#{arguments[:version]}/composer.phar"
-  checksum = download URI(uri), 'slackbuilds/development/composer/composer.phar'
+  checksum = SlackBuilder.download URI(uri), 'slackbuilds/development/composer/composer.phar'
   write_info package, downloads: [Download.new(uri, checksum.hexdigest)]
   update_slackbuild_version 'development/composer', arguments[:version]
 
@@ -47,7 +47,7 @@ task 'universal-ctags', [:version] do |_, arguments|
 
   uri = "https://github.com/universal-ctags/ctags/archive/#{arguments[:version]}/ctags-#{arguments[:version]}.tar.gz"
   tarball = "slackbuilds/development/universal-ctags/ctags-#{arguments[:version]}.tar.gz"
-  checksum = download URI(uri), tarball
+  checksum = SlackBuilder.download URI(uri), tarball
   download = "https://download.dlackware.com/hosted-sources/universal-ctags/ctags-#{arguments[:version]}.tar.gz"
 
   write_info package,
@@ -90,8 +90,8 @@ task :ioncube do
     '64' => URI("http://downloads3.ioncube.com/loader_downloads/#{tarball_name['64']}")
   }
   checksum = {
-    '32' => download(uri['32'], "slackbuilds/development/ioncube-loader/#{tarball_name['32']}").hexdigest,
-    '64' => download(uri['64'], "slackbuilds/development/ioncube-loader/#{tarball_name['64']}").hexdigest
+    '32' => SlackBuilder.download(uri['32'], "slackbuilds/development/ioncube-loader/#{tarball_name['32']}").hexdigest,
+    '64' => SlackBuilder.download(uri['64'], "slackbuilds/development/ioncube-loader/#{tarball_name['64']}").hexdigest
   }
   package = Package.new 'development/ioncube-loader',
     version: arguments[:version],
@@ -110,7 +110,7 @@ end
 task :webex do
   tarball = 'slackbuilds/network/webex/Webex.deb'
   uri = 'https://binaries.webex.com/WebexDesktop-Ubuntu-Official-Package/Webex.deb'
-  checksum = download URI(uri), tarball
+  checksum = SlackBuilder.download URI(uri), tarball
 
   last_stdout, = Open3.pipeline_r ['ar', 'p', tarball, 'control.tar.gz'], ['tar', 'zxO', './control']
   version = last_stdout.read.lines
@@ -127,3 +127,22 @@ task :webex do
   update_slackbuild_version 'network/webex', package.version
   commit 'network/webex', package.version
 end
+
+task 'rdiff-backup', [:version] do |_, arguments|
+  raise 'Version is not specified.' unless arguments.key? :version
+
+  package = Package.new 'system/rdiff-backup',
+    version: arguments[:version],
+    homepage: 'https://rdiff-backup.net/',
+    requires: ['librsync']
+
+  uri = "https://github.com/rdiff-backup/rdiff-backup/releases/download/v#{arguments[:version]}/rdiff-backup-#{arguments[:version]}.tar.gz"
+  tarball = "system/rdiff-backup/rdiff-backup-#{arguments[:version]}.tar.gz"
+  checksum = download_and_deploy URI(uri), tarball
+  download = "https://download.dlackware.com/hosted-sources/rdiff-backup/rdiff-backup-#{arguments[:version]}.tar.gz"
+
+  write_info package, downloads: [Download.new(download, checksum)]
+  update_slackbuild_version 'system/rdiff-backup', arguments[:version]
+
+  commit 'system/rdiff-backup', arguments[:version]
+end

lib/download.rb

@@ -28,58 +28,58 @@ module SlackBuilder
 
     repository
   end
-end
 
-def write_chunk(response, checksum, progressbar, io)
-  response.read_body do |chunk|
-    progressbar.progress += chunk.length
-    io << chunk
-    checksum << chunk
+  def self.download(uri, target)
+    print Term::ANSIColor.green "Downloading #{uri} "
+    checksum = nil
+
+    Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
+      checksum = start_download uri, target, http
+    end
+
+    puts
+    checksum
   end
-end
 
-def write_download(target, response)
-  checksum = Digest::MD5.new
-  progressbar = ProgressBar.create title: target, total: response.header.content_length
+  private_class_method def self.redirect_download(location, target)
+    puts 'redirecting...'
+    new_location = URI location
 
-  File.open target, 'w' do |io|
-    write_chunk response, checksum, progressbar, io
+    download new_location, target
   end
-  progressbar.finish
 
-  checksum
-end
-
-def redirect_download(location, target)
-  puts 'redirecting...'
-  new_location = URI location
-
-  download new_location, target
-end
-
-def start_download(uri, target, http)
-  request = Net::HTTP::Get.new uri
-
-  http.request request do |response|
-    case response
-    when Net::HTTPRedirection
-      return redirect_download response['location'], target
-    else
-      return write_download target, response
+  private_class_method def self.write_chunk(response, checksum, progressbar, io)
+    response.read_body do |chunk|
+      progressbar.progress += chunk.length
+      io << chunk
+      checksum << chunk
     end
   end
-end
 
-def download(uri, target)
-  print Term::ANSIColor.green "Downloading #{uri} "
-  checksum = nil
+  private_class_method def self.write_download(target, response)
+    checksum = Digest::MD5.new
+    progressbar = ProgressBar.create title: target, total: response.header.content_length
 
-  Net::HTTP.start(uri.host, uri.port, use_ssl: uri.scheme == 'https') do |http|
-    checksum = start_download uri, target, http
+    File.open target, 'w' do |io|
+      write_chunk response, checksum, progressbar, io
+    end
+    progressbar.finish
+
+    checksum
   end
 
-  puts
-  checksum
+  private_class_method def self.start_download(uri, target, http)
+    request = Net::HTTP::Get.new uri
+
+    http.request request do |response|
+      case response
+      when Net::HTTPRedirection
+        return redirect_download response['location'], target
+      else
+        return write_download target, response
+      end
+    end
+  end
 end
 
 def hosted_sources(absolute_url)
@@ -135,10 +135,10 @@ def download_and_deploy(uri, tarball)
 
   if remote_file_exists?(remote_path)
     uri = URI hosted_sources(remote_path)
-    return download(uri, "slackbuilds/#{tarball}").hexdigest
+    return SlackBuilder.download(uri, "slackbuilds/#{tarball}").hexdigest
   end
 
-  checksum = download uri, "slackbuilds/#{tarball}"
+  checksum = SlackBuilder.download uri, "slackbuilds/#{tarball}"
   sh(*upload_command(tarball, remote_path))
   checksum.hexdigest
 end

rakelib/dmd_tools.rake

@@ -15,7 +15,7 @@ module SlackBuilder
       tarball_name = "dmd.#{version}.linux.tar.xz"
 
       uri = URI "http://downloads.dlang.org/releases/2.x/#{version}/#{tarball_name}"
-      checksum = download(uri, "slackbuilds/development/dmd/#{tarball_name}")
+      checksum = SlackBuilder.download(uri, "slackbuilds/development/dmd/#{tarball_name}")
 
       package = Package.new 'development/dmd', version: version,
         homepage: 'https://dlang.org'