1 files changed, 81 insertions, 0 deletions
diff --git a/lib/gitlab/manifest_import/manifest.rb b/lib/gitlab/manifest_import/manifest.rb
new file mode 100644
index 00000000000..4d6034fb956
--- /dev/null
+++ b/lib/gitlab/manifest_import/manifest.rb
@@ -0,0 +1,81 @@
+# Class to parse manifest file and build a list of repositories for import
+#
+# <manifest>
+#   <remote review="https://android-review.googlesource.com/" />
+#   <project path="platform-common" name="platform" />
+#   <project path="platform/art" name="platform/art" />
+#   <project path="platform/device" name="platform/device" />
+# </manifest>
+#
+# 1. Project path must be uniq and can't be part of other project path.
+#    For example, you can't have projects with 'foo' and 'foo/bar' paths.
+# 2. Remote must be present with review attribute so GitLab knows
+#    where to fetch source code
+module Gitlab
+  module ManifestImport
+    class Manifest
+      attr_reader :parsed_xml, :errors
+
+      def initialize(file)
+        @parsed_xml = Nokogiri::XML(file) { |config| config.strict }
+        @errors = []
+      rescue Nokogiri::XML::SyntaxError
+        @errors = ['The uploaded file is not a valid XML file.']
+      end
+
+      def projects
+        raw_projects.each_with_index.map do |project, i|
+          {
+            id: i,
+            name: project['name'],
+            path: project['path'],
+            url: repository_url(project['name'])
+          }
+        end
+      end
+
+      def valid?
+        return false if @errors.any?
+
+        unless validate_remote
+          @errors << 'Make sure a <remote> tag is present and is valid.'
+        end
+
+        unless validate_projects
+          @errors << 'Make sure every <project> tag has name and path attributes.'
+        end
+
+        @errors.empty?
+      end
+
+      private
+
+      def validate_remote
+        remote.present? && URI.parse(remote).host
+      rescue URI::Error
+        false
+      end
+
+      def validate_projects
+        raw_projects.all? do |project|
+          project['name'] && project['path']
+        end
+      end
+
+      def repository_url(name)
+        URI.join(remote, name).to_s
+      end
+
+      def remote
+        return @remote if defined?(@remote)
+
+        remote_tag = parsed_xml.css('manifest > remote').first
+        @remote = remote_tag['review'] if remote_tag
+      end
+
+      def raw_projects
+        @raw_projects ||= parsed_xml.css('manifest > project')
+      end
+    end
+  end
+end