1 files changed, 65 insertions, 0 deletions
diff --git a/lib/gitlab/push_options.rb b/lib/gitlab/push_options.rb
new file mode 100644
index 00000000000..923aa09527d
--- /dev/null
+++ b/lib/gitlab/push_options.rb
@@ -0,0 +1,65 @@
+# frozen_string_literal: true
+
+module Gitlab
+  class PushOptions
+    VALID_OPTIONS = HashWithIndifferentAccess.new({
+      merge_request: {
+        keys: [:create, :target]
+      },
+      ci: {
+        keys: [:skip]
+      }
+    }).freeze
+
+    NAMESPACE_ALIASES = HashWithIndifferentAccess.new({
+      mr: :merge_request
+    }).freeze
+
+    OPTION_MATCHER = /(?<namespace>[^\.]+)\.(?<key>[^=]+)=?(?<value>.*)/
+
+    attr_reader :options
+
+    def initialize(options = [])
+      @options = parse_options(options)
+    end
+
+    def get(*args)
+      options.dig(*args)
+    end
+
+    private
+
+    def parse_options(raw_options)
+      options = HashWithIndifferentAccess.new
+
+      Array.wrap(raw_options).each do |option|
+        namespace, key, value = parse_option(option)
+
+        next if [namespace, key].any?(&:nil?)
+
+        options[namespace] ||= HashWithIndifferentAccess.new
+        options[namespace][key] = value
+      end
+
+      options
+    end
+
+    def parse_option(option)
+      parts = OPTION_MATCHER.match(option)
+      return unless parts
+
+      namespace, key, value = parts.values_at(:namespace, :key, :value).map(&:strip)
+      namespace = NAMESPACE_ALIASES[namespace] if NAMESPACE_ALIASES[namespace]
+      value = value.presence || true
+
+      return unless valid_option?(namespace, key)
+
+      [namespace, key, value]
+    end
+
+    def valid_option?(namespace, key)
+      keys = VALID_OPTIONS.dig(namespace, :keys)
+      keys && keys.include?(key.to_sym)
+    end
+  end
+end