Adding an option to display tweets on CLI in reverse order (oldest fi…

…rst). Added specs as well, including a spec helper to capture STDOUT for testing it a bit more thoroughly

Signed-off-by: John Nunemaker <nunemaker@gmail.com>

lib/twitter/cli.rb

@@ -277,15 +277,19 @@ def run
     option('force', 'f') {
       description "Ignore since_id and show first page of results even if there aren't new ones"
     }
+    option('reverse', 'r') {
+      description 'Reverse the output so the oldest tweets are at the top'
+    }
 
     def run
       do_work do
         timeline = params['timeline'].value == 'me' ? 'user' : params['timeline'].value
         options, since_id = {}, Configuration["#{timeline}_since_id"]
         options[:since_id] = since_id if !since_id.nil? && !params['force'].given?
+        reverse = params['reverse'].given? ? true : false
         cache = [:friends, :user].include?(timeline)
         collection = base.timeline(timeline.to_sym, options)
-        output_tweets(collection, {:cache => cache, :since_prefix => timeline})
+        output_tweets(collection, {:cache => cache, :since_prefix => timeline, :reverse => reverse})
       end
     end
   end

lib/twitter/cli/helpers.rb

@@ -8,13 +8,15 @@ def output_tweets(collection, options={})
         options = {
           :cache        => false,
           :since_prefix => '',
-          :empty_msg    => 'Nothing new since your last check.'
+          :empty_msg    => 'Nothing new since your last check.',
+          :reverse      => false
         }.merge(options)
 
         if collection.size > 0
           justify   = collection.collect { |s| s.user.screen_name }.max { |a,b| a.length <=> b.length }.length rescue 0
           indention = ' ' * (justify + 3)
           say("\n#{indention}#{collection.size} new tweet(s) found.\n\n")
+          collection.reverse! if options[:reverse]
           collection.each do |s|
             Tweet.create_from_tweet(current_account, s) if options[:cache]
 
@@ -33,7 +35,7 @@ def output_tweets(collection, options={})
             say "#{CGI::unescapeHTML(formatted_name)}: #{CGI::unescapeHTML(formatted_msg)}\n#{indention}#{formatted_time}\n\n"
           end
 
-          Configuration["#{options[:since_prefix]}_since_id"] = collection.first.id
+          Configuration["#{options[:since_prefix]}_since_id"] = options[:reverse] ? collection.last.id : collection.first.id
         else
           say(options[:empty_msg])
         end

spec/cli/helper_spec.rb

@@ -35,7 +35,15 @@ class Tweet < OpenStruct
     end
 
     specify "should properly format" do
-      output_tweets(@collection)
+      stdout_for {
+        output_tweets(@collection)
+      }.should match /with a few words[\w\W]*with a\./
+    end
+
+    specify 'should format in reverse' do
+      stdout_for {
+        output_tweets(@collection, :reverse => true)
+      }.should match /with a\.[\w\W]*with a few words/
     end
   end
 end

spec/spec_helper.rb

@@ -9,4 +9,15 @@
 dir = File.dirname(__FILE__)
 
 $:.unshift(File.join(dir, '/../lib/'))
-require dir + '/../lib/twitter'
+require dir + '/../lib/twitter'
+
+
+def stdout_for(&block)
+  # Inspired by http://www.ruby-forum.com/topic/58647
+  old_stdout = $stdout
+  $stdout = StringIO.new
+  yield
+  output = $stdout.string
+  $stdout = old_stdout
+  output
+end