1 files changed, 36 insertions, 0 deletions
diff --git a/lib/license/finder/ext/go_modules.rb b/lib/license/finder/ext/go_modules.rb
new file mode 100644
index 0000000..2ef3aa2
--- /dev/null
+++ b/lib/license/finder/ext/go_modules.rb
@@ -0,0 +1,36 @@
+module LicenseFinder
+  class GoModules
+    def prepare
+      shell.execute([:go, :mod, :tidy, '-v', '&&', :go, :mod, :vendor, '-v'])
+    end
+
+    def active?
+      Dir[project_path.join('go.sum')].any?
+    end
+
+    def current_packages
+      stdout, _stderr, status = shell.execute([
+        :go, :list, '-m', '-mod=vendor',
+        '-f', "'{{.Path}},{{.Version}},{{.Dir}}'", :all
+      ])
+      return [] unless status.success?
+
+      stdout.lines.map do |line|
+        name, version, dir = line.chomp.split(',')
+        next if Pathname(dir).cleanpath == absolute_project_path
+
+        Package.new(name, version, install_path: dir)
+      end.compact
+    end
+
+    private
+
+    def shell
+      @shell ||= ::License::Management::Shell.new
+    end
+
+    def absolute_project_path
+      @absolute_project_path ||= Pathname(project_path).cleanpath
+    end
+  end
+end