treewide: future-proof frozen_string_literal changes

Once again Ruby seems ready to introduce more incompatibilities
and force busywork upon maintainers[1].  In order to avoid
incompatibilities in the future, I used a Perl script[2] to
prepend `frozen_string_literal: false' to every Ruby file.

Somebody interested will have to go through every Ruby source
file and enable frozen_string_literal once they've thoroughly
verified it's safe to do so.

[1] https://bugs.ruby-lang.org/issues/20205
[2] https://yhbt.net/add-fsl.git/74d7689/s/?b=add-fsl.perl

18 files changed, 18 insertions, 0 deletions

diff --git a/lib/unicorn/app/old_rails.rb b/lib/unicorn/app/old_rails.rb
index 1e8c41a..54b3e69 100644
--- a/lib/unicorn/app/old_rails.rb
+++ b/lib/unicorn/app/old_rails.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 # This code is based on the original Rails handler in Mongrel
diff --git a/lib/unicorn/app/old_rails/static.rb b/lib/unicorn/app/old_rails/static.rb
index 2257270..cf34e02 100644
--- a/lib/unicorn/app/old_rails/static.rb
+++ b/lib/unicorn/app/old_rails/static.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # This code is based on the original Rails handler in Mongrel
 # Copyright (c) 2005 Zed A. Shaw
diff --git a/lib/unicorn/cgi_wrapper.rb b/lib/unicorn/cgi_wrapper.rb
index d9b7fe5..fb43605 100644
--- a/lib/unicorn/cgi_wrapper.rb
+++ b/lib/unicorn/cgi_wrapper.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 # This code is based on the original CGIWrapper from Mongrel
diff --git a/lib/unicorn/configurator.rb b/lib/unicorn/configurator.rb
index b21a01d..3c81596 100644
--- a/lib/unicorn/configurator.rb
+++ b/lib/unicorn/configurator.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 require 'logger'
 
 # Implements a simple DSL for configuring a unicorn server.
diff --git a/lib/unicorn/const.rb b/lib/unicorn/const.rb
index 33ab4ac..8032863 100644
--- a/lib/unicorn/const.rb
+++ b/lib/unicorn/const.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 module Unicorn::Const # :nodoc:
   # default TCP listen host address (0.0.0.0, all interfaces)
diff --git a/lib/unicorn/http_request.rb b/lib/unicorn/http_request.rb
index ab3bd6e..a48dab7 100644
--- a/lib/unicorn/http_request.rb
+++ b/lib/unicorn/http_request.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # no stable API here
 require 'unicorn_http'
diff --git a/lib/unicorn/http_response.rb b/lib/unicorn/http_response.rb
index 0ed0ae3..3634165 100644
--- a/lib/unicorn/http_response.rb
+++ b/lib/unicorn/http_response.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 # Writes a Rack response to your client using the HTTP/1.1 specification.
 # You use it by simply doing:
diff --git a/lib/unicorn/http_server.rb b/lib/unicorn/http_server.rb
index ed5bbf1..08fbe40 100644
--- a/lib/unicorn/http_server.rb
+++ b/lib/unicorn/http_server.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # This is the process manager of Unicorn. This manages worker
 # processes which in turn handle the I/O and application process.
diff --git a/lib/unicorn/launcher.rb b/lib/unicorn/launcher.rb
index 78e8f39..bd3324e 100644
--- a/lib/unicorn/launcher.rb
+++ b/lib/unicorn/launcher.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # :enddoc:
 $stdout.sync = $stderr.sync = true
diff --git a/lib/unicorn/oob_gc.rb b/lib/unicorn/oob_gc.rb
index db9f2cb..efd9177 100644
--- a/lib/unicorn/oob_gc.rb
+++ b/lib/unicorn/oob_gc.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # Strongly consider https://github.com/tmm1/gctools if using Ruby 2.1+
 # It is built on new APIs in Ruby 2.1, so it is more intelligent than
diff --git a/lib/unicorn/preread_input.rb b/lib/unicorn/preread_input.rb
index 12eb3e8..c62cc09 100644
--- a/lib/unicorn/preread_input.rb
+++ b/lib/unicorn/preread_input.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 module Unicorn
 # This middleware is used to ensure input is buffered to memory
diff --git a/lib/unicorn/select_waiter.rb b/lib/unicorn/select_waiter.rb
index cb84aab..d11ea57 100644
--- a/lib/unicorn/select_waiter.rb
+++ b/lib/unicorn/select_waiter.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # fallback for non-Linux and Linux <4.5 systems w/o EPOLLEXCLUSIVE
 class Unicorn::SelectWaiter # :nodoc:
   def get_readers(ready, readers, timeout) # :nodoc:
diff --git a/lib/unicorn/socket_helper.rb b/lib/unicorn/socket_helper.rb
index 06ec2b2..986932f 100644
--- a/lib/unicorn/socket_helper.rb
+++ b/lib/unicorn/socket_helper.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :enddoc:
 require 'socket'
 
diff --git a/lib/unicorn/stream_input.rb b/lib/unicorn/stream_input.rb
index 9246f73..23a9976 100644
--- a/lib/unicorn/stream_input.rb
+++ b/lib/unicorn/stream_input.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # When processing uploads, unicorn may expose a StreamInput object under
 # "rack.input" of the Rack environment when
diff --git a/lib/unicorn/tee_input.rb b/lib/unicorn/tee_input.rb
index 2ccc2d9..b3c6535 100644
--- a/lib/unicorn/tee_input.rb
+++ b/lib/unicorn/tee_input.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # Acts like tee(1) on an input input to provide a input-like stream
 # while providing rewindable semantics through a File/StringIO backing
diff --git a/lib/unicorn/tmpio.rb b/lib/unicorn/tmpio.rb
index 0bbf6ec..deecd80 100644
--- a/lib/unicorn/tmpio.rb
+++ b/lib/unicorn/tmpio.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 # :stopdoc:
 require 'tmpdir'
 
diff --git a/lib/unicorn/util.rb b/lib/unicorn/util.rb
index b826de4..f28d929 100644
--- a/lib/unicorn/util.rb
+++ b/lib/unicorn/util.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 require 'fcntl'
 module Unicorn::Util # :nodoc:
diff --git a/lib/unicorn/worker.rb b/lib/unicorn/worker.rb
index 4af31be..d2445d5 100644
--- a/lib/unicorn/worker.rb
+++ b/lib/unicorn/worker.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 require "raindrops"
 
 # This class and its members can be considered a stable interface