Update OS detection for 0.9.9 client's User-Agent format

app/decorators/asciicast_decorator.rb

@@ -74,12 +74,12 @@ class AsciicastDecorator < ApplicationDecorator
   end
 
   def guess_os(text)
-    if text =~ /Linux/
+    if text =~ /Linux/i
       'Linux'
-    elsif text =~ /Darwin/
+    elsif text =~ /Darwin/i
       'OS X'
     else
-      text.split(' ', 2)[0]
+      text.split(/[\s-]/, 2)[0].to_s.titleize
     end
   end
 

spec/decorators/asciicast_decorator_spec.rb

@@ -12,7 +12,7 @@ describe AsciicastDecorator do
     let(:method) { :os }
 
     context 'when user_agent is present' do
-      context 'and the OS is Linux' do
+      context 'and the OS is Linux (pre-0.9.9 client)' do
         before do
           asciicast.user_agent =
             "asciinema/0.9.7 CPython/3.3.1 " \
@@ -22,7 +22,17 @@ describe AsciicastDecorator do
         it { should == 'Linux' }
       end
 
-      context 'and the OS is OS X' do
+      context 'and the OS is Linux (0.9.9+ client)' do
+        before do
+          asciicast.user_agent =
+            "asciinema/0.9.9 gc/go1.3 " \
+            "linux-amd64"
+        end
+
+        it { should == 'Linux' }
+      end
+
+      context 'and the OS is OS X (pre-0.9.9 client)' do
         before do
           asciicast.user_agent =
             "asciinema/0.9.7 CPython/2.7.4 " \
@@ -32,7 +42,17 @@ describe AsciicastDecorator do
         it { should == 'OS X' }
       end
 
-      context 'and the OS is other' do
+      context 'and the OS is OS X (0.9.9+ client)' do
+        before do
+          asciicast.user_agent =
+            "asciinema/0.9.9 gc/go1.3 " \
+            "darwin-amd64"
+        end
+
+        it { should == 'OS X' }
+      end
+
+      context 'and the OS is other (pre-0.9.9 client)' do
         before do
           asciicast.user_agent = "asciinema/0.9.7 CPython/2.7.4 Jola/Misio-Foo"
         end
@@ -41,6 +61,16 @@ describe AsciicastDecorator do
           should == 'Jola'
         end
       end
+
+      context 'and the OS is other (0.9.9+ client)' do
+        before do
+          asciicast.user_agent = "asciinema/0.9.9 gc/go1.3 jola-amd64"
+        end
+
+        it 'should return first token titleized' do
+          should == 'Jola'
+        end
+      end
     end
 
     context 'when uname is present' do