metanorma/metanorma#202 respect HTTP[S]|SOCKS_PROXY env vars during c…

…lone

lib/metanorma/cli/git_template.rb

@@ -75,8 +75,17 @@ def remove_template
       end
 
       def clone_git_template(repo)
-        clone = Git.clone(repo, name, path: templates_path)
-        template_path unless clone.nil?
+        http_proxy = ENV["SOCKS_PROXY"] || ENV["HTTP_PROXY"]
+        https_proxy = ENV["SOCKS_PROXY"] || ENV["HTTPS_PROXY"]
+
+        if http_proxy || https_proxy
+          clone_with_proxy(http_proxy, https_proxy)
+        else
+          clone = Git.clone(repo, name, path: templates_path)
+          template_path unless clone.nil?
+        end
+
+        template_path
       end
 
       def git_repos
@@ -102,6 +111,16 @@ def build_templates_path
       def template_path
         @template_path ||= templates_path.join(name.to_s.downcase)
       end
+
+      def clone_with_proxy(http_proxy, https_proxy)
+        repo_path = templates_path / name
+        git = Git.init(repo_path.to_s)
+        git.config("http.proxy", http_proxy) if http_proxy
+        git.config("https.proxy", https_proxy) if https_proxy
+        git.add_remote("origin", repo)
+        git.fetch
+        git.checkout("master") # FIXME after https://github.com/ruby-git/ruby-git/pull/532
+      end
     end
   end
 end