Better submodule links.

Detect if submodule is hosted on this GitLab server, gitlab.com or github.com.
Hash links directly to commit in repo.

app/helpers/submodule_helper.rb

+module SubmoduleHelper
+  include Gitlab::ShellAdapter
+
+  # links to files listing for submodule if submodule is a project on this server
+  def submodule_links(submodule_item)
+    url = submodule_item.submodule_url
+    return url, nil unless url =~ /([^\/:]+\/[^\/]+\.git)\Z/
+
+    project = $1
+    project.chomp!('.git')
+
+    if self_url?(url, project)
+      return project_path(project), project_tree_path(project, submodule_item.id)
+    elsif github_dot_com_url?(url)
+      standard_links('github.com', project, submodule_item.id)
+    elsif gitlab_dot_com_url?(url)
+      standard_links('gitlab.com', project, submodule_item.id)
+    else
+      return url, nil
+    end
+  end
+  
+  protected
+
+  def github_dot_com_url?(url)
+    url =~ /github\.com[\/:][^\/]+\/[^\/]+\Z/
+  end
+
+  def gitlab_dot_com_url?(url)
+    url =~ /gitlab\.com[\/:][^\/]+\/[^\/]+\Z/
+  end
+  
+  def self_url?(url, project)
+    return true if url == [ Gitlab.config.gitlab.url, '/', project, '.git' ].join('')
+    url == gitlab_shell.url_to_repo(project)
+  end
+  
+  def standard_links(host, project, commit)
+    base = [ 'https://', host, '/', project ].join('')
+    return base, [ base, '/tree/', commit ].join('')
+  end
+end
\ No newline at end of file

app/models/gollum_wiki.rb

 class GollumWiki
+  include Gitlab::ShellAdapter
   MARKUPS = {
     "Markdown" => :markdown,
@@ -113,10 +114,6 @@ class GollumWiki
     "#{@user.username} #{action} page: #{title}"
   end
-  def gitlab_shell
-    @gitlab_shell ||= Gitlab::Shell.new
-  end
-
   def path_to_repo
     @path_to_repo ||= File.join(Gitlab.config.gitlab_shell.repos_path, "#{path_with_namespace}.git")
   end

app/views/projects/tree/_submodule_item.html.haml

+- tree, commit = submodule_links(submodule_item)
 %tr{ class: "tree-item" }
   %td.tree-item-file-name
     = image_tag "submodule.png"
     %span
-      = link_to truncate(submodule_item.name, length: 40), submodule_item.submodule_url
+      = link_to truncate(submodule_item.name, length: 40), tree
     @
-    %span.monospace #{submodule_item.id[0..10]}
+    %span.monospace
+      - if commit.nil?
+        #{submodule_item.id[0..10]}
+      - else
+        = link_to "#{submodule_item.id[0..10]}", commit
   %td
   %td
   %td

spec/helpers/submodule_helper_spec.rb

+require 'spec_helper'
+
+describe SubmoduleHelper do
+  describe 'submodule links' do
+    let(:submodule_item) { double(submodule_url: '', id: 'hash') }
+    let(:config) { Gitlab.config.gitlab }
+
+    context 'submodule on self' do
+      before do
+        Gitlab.config.gitlab.stub(protocol: 'http') # set this just to be sure
+      end
+
+      it 'should detect ssh on standard port' do
+        Gitlab.config.gitlab.stub(ssh_port: 22) # set this just to be sure
+        submodule_item.stub(submodule_url: [ config.user, '@', config.host, ':gitlab-org/gitlab-ce.git' ].join(''))
+        submodule_links(submodule_item).should == [ project_path('gitlab-org/gitlab-ce'), project_tree_path('gitlab-org/gitlab-ce', 'hash') ]
+      end
+    
+      it 'should detect ssh on non-standard port' do
+        Gitlab.config.gitlab_shell.stub(ssh_port: 2222)
+        Gitlab.config.gitlab_shell.stub(ssh_path_prefix: Settings.send(:build_gitlab_shell_ssh_path_prefix))
+        submodule_item.stub(submodule_url: [ 'ssh://', config.user, '@', config.host, ':2222/gitlab-org/gitlab-ce.git' ].join(''))
+        submodule_links(submodule_item).should == [ project_path('gitlab-org/gitlab-ce'), project_tree_path('gitlab-org/gitlab-ce', 'hash') ]
+      end
+
+      it 'should detect http on standard port' do
+        Gitlab.config.gitlab.stub(port: 80)
+        Gitlab.config.gitlab.stub(url: Settings.send(:build_gitlab_url))
+        submodule_item.stub(submodule_url: [ 'http://', config.host, '/gitlab-org/gitlab-ce.git' ].join(''))
+        submodule_links(submodule_item).should == [ project_path('gitlab-org/gitlab-ce'), project_tree_path('gitlab-org/gitlab-ce', 'hash') ]
+      end
+
+      it 'should detect http on non-standard port' do
+        Gitlab.config.gitlab.stub(port: 3000)
+        Gitlab.config.gitlab.stub(url: Settings.send(:build_gitlab_url))
+        submodule_item.stub(submodule_url: [ 'http://', config.host, ':3000/gitlab-org/gitlab-ce.git' ].join(''))
+        submodule_links(submodule_item).should == [ project_path('gitlab-org/gitlab-ce'), project_tree_path('gitlab-org/gitlab-ce', 'hash') ]
+      end
+
+      it 'should work with relative_url_root' do
+        Gitlab.config.gitlab.stub(port: 80) # set this just to be sure
+        Gitlab.config.gitlab.stub(relative_url_root: '/gitlab/root')
+        Gitlab.config.gitlab.stub(url: Settings.send(:build_gitlab_url))
+        submodule_item.stub(submodule_url: [ 'http://', config.host, '/gitlab/root/gitlab-org/gitlab-ce.git' ].join(''))
+        submodule_links(submodule_item).should == [ project_path('gitlab-org/gitlab-ce'), project_tree_path('gitlab-org/gitlab-ce', 'hash') ]
+      end
+    end
+  
+    context 'submodule on github.com' do
+      it 'should detect ssh' do
+        submodule_item.stub(submodule_url: 'git@github.com:gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://github.com/gitlab-org/gitlab-ce', 'https://github.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should detect http' do
+        submodule_item.stub(submodule_url: 'http://github.com/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://github.com/gitlab-org/gitlab-ce', 'https://github.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should detect https' do
+        submodule_item.stub(submodule_url: 'https://github.com/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://github.com/gitlab-org/gitlab-ce', 'https://github.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should return original with non-standard url' do
+        submodule_item.stub(submodule_url: 'http://github.com/gitlab-org/gitlab-ce')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+
+        submodule_item.stub(submodule_url: 'http://github.com/another/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+      end
+    end
+  
+    context 'submodule on gitlab.com' do
+      it 'should detect ssh' do
+        submodule_item.stub(submodule_url: 'git@gitlab.com:gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://gitlab.com/gitlab-org/gitlab-ce', 'https://gitlab.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should detect http' do
+        submodule_item.stub(submodule_url: 'http://gitlab.com/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://gitlab.com/gitlab-org/gitlab-ce', 'https://gitlab.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should detect https' do
+        submodule_item.stub(submodule_url: 'https://gitlab.com/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ 'https://gitlab.com/gitlab-org/gitlab-ce', 'https://gitlab.com/gitlab-org/gitlab-ce/tree/hash' ]
+      end
+    
+      it 'should return original with non-standard url' do
+        submodule_item.stub(submodule_url: 'http://gitlab.com/gitlab-org/gitlab-ce')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+
+        submodule_item.stub(submodule_url: 'http://gitlab.com/another/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+      end
+    end
+  
+    context 'submodule on unsupported' do
+      it 'should return original' do
+        submodule_item.stub(submodule_url: 'http://mygitserver.com/gitlab-org/gitlab-ce')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+
+        submodule_item.stub(submodule_url: 'http://mygitserver.com/gitlab-org/gitlab-ce.git')
+        submodule_links(submodule_item).should == [ submodule_item.submodule_url, nil ]
+      end
+    end
+  end
+end