Add MCCP2 compressed stream support

test/text_pipeline_test.rb

@@ -1,5 +1,7 @@
 # encoding: UTF-8
 
+require "zlib"
+
 require_relative "test_helper"
 require_relative "../lib/meow/telnet"
 require_relative "../lib/meow/text_pipeline"
@@ -74,4 +76,18 @@ module MeowTextPipelineTest
     MeowTest.assert_equal([[:remote_echo, true]], result.events)
     MeowTest.assert(pipeline.remote_echo?)
   end
+
+  MeowTest.test("Text pipeline processes MCCP2 output normally") do
+    pipeline = MeowClient::TextPipeline.new("UTF-8")
+    negotiation = bytes(Telnet::IAC, Telnet::WILL, Telnet::COMPRESS2)
+    marker = bytes(Telnet::IAC, Telnet::SB, Telnet::COMPRESS2, Telnet::IAC, Telnet::SE)
+    payload = "red\e[31m text\e[0m\r\n".b
+    result = pipeline.feed(negotiation + marker + Zlib::Deflate.deflate(payload))
+
+    MeowTest.assert_equal(["red text"], result.records)
+    MeowTest.assert_equal([bytes(Telnet::IAC, Telnet::DO, Telnet::COMPRESS2)], result.replies)
+    MeowTest.assert_equal([[:compression, true]], result.events)
+  ensure
+    pipeline.close if pipeline != nil
+  end
 end