From a36cf00dee5d7657bf95b66bd4559feaab010989 Mon Sep 17 00:00:00 2001
From: Eric Wong <bofh@yhbt.net>
Date: Thu, 8 Feb 2024 11:58:58 +0000
Subject: 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 the following Perl
script to prepend `frozen_string_literal: false' to every
Ruby file:

use v5.12;
use autodie;
my $usage = 'perl /path/to/script <LIST_OF_RB_FILES>';
my $fsl = "# frozen_string_literal: false\n";
for my $f (@ARGV) {
	open my $fh, '<', $f;
	my $s = do { local $/; <$fh> } // die "read($f): $!";
	next if $s =~ /^#\s*frozen_string_literal:/sm;

	# fsl must be after encoding: line if it exists:
	if ($s =~ s/^([ \t]*\#[ \t\-\*\#]+encoding:[^\n]+\n)/$1$fsl/sm
			# or after the shebang
			|| $s =~ s/^(#![^\n]+\n)/$1$fsl/
			# or after embedded switches in rackup files:
			|| ($f =~ /\.ru$/ &&
				$s =~ s/^(#\\[^\n]+\n)/$1$fsl/)
			# or prepend as a last resort:
			|| (substr($s, 0, 0) = $fsl)) {
		open $fh, '>', $f;
		print $fh $s;
		close $fh;
	}
}

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
---
 examples/linux-listener-stats.rb | 1 +
 examples/middleware.ru           | 1 +
 examples/watcher.ru              | 1 +
 examples/watcher_demo.ru         | 1 +
 examples/yahns.conf.rb           | 1 +
 examples/zbatery.conf.rb         | 1 +
 6 files changed, 6 insertions(+)

(limited to 'examples')

diff --git a/examples/linux-listener-stats.rb b/examples/linux-listener-stats.rb
index 7e767da..5f67633 100755
--- a/examples/linux-listener-stats.rb
+++ b/examples/linux-listener-stats.rb
@@ -1,5 +1,6 @@
 #!/usr/bin/ruby
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 $stdout.sync = $stderr.sync = true
 # this is used to show or watch the number of active and queued
 # connections on any listener socket from the command line
diff --git a/examples/middleware.ru b/examples/middleware.ru
index 642016b..a485592 100644
--- a/examples/middleware.ru
+++ b/examples/middleware.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # sample stand-alone rackup application for Raindrops::Middleware
 require 'rack/lobster'
 require 'raindrops'
diff --git a/examples/watcher.ru b/examples/watcher.ru
index a3e7fdb..e2aa97c 100644
--- a/examples/watcher.ru
+++ b/examples/watcher.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Sample standalone Rack application, recommended use is with Zbatery
 # See zbatery.conf.rb
 require "raindrops"
diff --git a/examples/watcher_demo.ru b/examples/watcher_demo.ru
index 91f4cca..7a6e675 100644
--- a/examples/watcher_demo.ru
+++ b/examples/watcher_demo.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # This is a snippet of the config that powers
 # https://yhbt.net/raindrops-demo/
 # This may be used with the packaged zbatery.conf.rb
diff --git a/examples/yahns.conf.rb b/examples/yahns.conf.rb
index f5b4f10..75f0bd1 100644
--- a/examples/yahns.conf.rb
+++ b/examples/yahns.conf.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Inlined rack app using yahns server (git clone git://yhbt.net/yahns.git)
 # Usage: yahns -c /path/to/this/file.conf.rb
 # There is no separate config.ru file for this example,
diff --git a/examples/zbatery.conf.rb b/examples/zbatery.conf.rb
index 5f94c0e..0537466 100644
--- a/examples/zbatery.conf.rb
+++ b/examples/zbatery.conf.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # Used for running Raindrops::Watcher, which requires a multi-threaded
 # Rack server capable of streaming a response.  Threads must be used,
 # so any multi-threaded Rack server may be used.
-- 
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