arg_parser.rb in gistory-0.3.0

- old
+ new

@@ -29,10 +29,11 @@
       private
 
       def parse_gem_name
         gem_name = @args.shift
         raise(Gistory::ParserError, "No gem specified") unless gem_name
+
         @config.gem_name = gem_name
       end
 
       def create_parser(config)
         parser = OptionParser.new
@@ -47,27 +48,38 @@
         parser.separator ""
         parser.separator "Options:"
 
         add_max_fetched_commits(parser, config)
         add_use_commits_from_all_branches(parser, config)
+        add_output_commit_hashes_only(parser, config)
         add_help(parser)
         add_version(parser)
       end
 
       def add_max_fetched_commits(parser, config)
         default = config.max_fetched_commits
         description = "max number of commits to be fetched (default #{default})"
         parser.on("-m", "--max-fetched-commits [Integer]", Integer, description) do |m|
           raise(Gistory::ParserError, "argument --max-fetched-commits must be an integer") if m.nil?
+
           config.max_fetched_commits = m
         end
       end
 
       def add_use_commits_from_all_branches(parser, config)
         description = "use commits from all branches " \
                       "(by default it uses only commits made to the current branch)"
         parser.on("-a", "--all-branches", description) do |a|
           config.all_branches = a
+        end
+      end
+
+      def add_output_commit_hashes_only(parser, config)
+        option_switch = "--hashes-only"
+        parser.on(option_switch,
+                  "output commit hashes only so they can be piped",
+                  "for example: gistory #{option_switch} sidekiq | xargs git show") do |ho|
+          config.output_commit_hashes_only = ho
         end
       end
 
       def add_help(parser)
         parser.on_tail("-h", "--help", "Show this message") do