Add support for XZ archive format

( will send upstream if it works )

app/views/projects/repositories/_download_archive.html.haml

@@ -23,6 +23,10 @@
         = link_to archive_namespace_project_repository_path(@project.namespace, @project, ref: ref, format: 'tar.bz2'), rel: 'nofollow' do
           %i.fa.fa-download
           %span Download tar.bz2
+      %li
+        = link_to archive_namespace_project_repository_path(@project.namespace, @project, ref: ref, format: 'tar.xz'), rel: 'nofollow' do
+          %i.fa.fa-download
+          %span Download tar.xz
       %li
         = link_to archive_namespace_project_repository_path(@project.namespace, @project, ref: ref, format: 'tar'), rel: 'nofollow' do
           %i.fa.fa-download

lib/gitlab/regex.rb

@@ -70,8 +70,8 @@ module Gitlab
 
 
     def archive_formats_regex
-      #                           |zip|tar|    tar.gz    |         tar.bz2         |
-      @archive_formats_regex ||= /(zip|tar|tar\.gz|tgz|gz|tar\.bz2|tbz|tbz2|tb2|bz2)/.freeze
+      #                           |zip|tar|    tar.gz    |         tar.bz2         |    tar.xz    |
+      @archive_formats_regex ||= /(zip|tar|tar\.gz|tgz|gz|tar\.bz2|tbz|tbz2|tb2|bz2|tar\.xz|txz|xz)/.freeze
     end
 
     def git_reference_regex

spec/requests/api/repositories_spec.rb

@@ -115,6 +115,15 @@ describe API::API, api: true  do
       expect(params['ArchivePath']).to match(/#{repo_name}\-[^\.]+\.tar.bz2/)
     end
 
+    it "should get the archive.tar.xz" do
+      get api("/projects/#{project.id}/repository/archive.tar.xz", user)
+      repo_name = project.repository.name.gsub("\.git", "")
+      expect(response.status).to eq(200)
+      type, params = workhorse_send_data
+      expect(type).to eq('git-archive')
+      expect(params['ArchivePath']).to match(/#{repo_name}\-[^\.]+\.tar.xz/)
+    end
+
     it "should return 404 for invalid sha" do
       get api("/projects/#{project.id}/repository/archive/?sha=xxx", user)
       expect(response.status).to eq(404)

spec/routing/project_routing_spec.rb

@@ -136,6 +136,10 @@ describe Projects::RepositoriesController, 'routing' do
     expect(get('/gitlab/gitlabhq/repository/archive.tar.bz2')).to route_to('projects/repositories#archive', namespace_id: 'gitlab', project_id: 'gitlabhq', format: 'tar.bz2')
   end
 
+  it 'to #archive format:tar.xz' do
+    expect(get('/gitlab/gitlabhq/repository/archive.tar.xz')).to route_to('projects/repositories#archive', namespace_id: 'gitlab', project_id: 'gitlabhq', format: 'tar.xz')
+  end
+
   it 'to #show' do
     expect(get('/gitlab/gitlabhq/repository')).to route_to('projects/repositories#show', namespace_id: 'gitlab', project_id: 'gitlabhq')
   end