From 9ef6b6f551a34922cfd831e2521495e89afe2f94 Mon Sep 17 00:00:00 2001
From: Eric Wong <normalperson@yhbt.net>
Date: Mon, 4 Oct 2010 23:55:31 +0000
Subject: split out isolate usage/logic

We'll be using more of Isolate in development.
---
 script/isolate_for_tests | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)
 create mode 100755 script/isolate_for_tests

(limited to 'script')

diff --git a/script/isolate_for_tests b/script/isolate_for_tests
new file mode 100755
index 0000000..1919289
--- /dev/null
+++ b/script/isolate_for_tests
@@ -0,0 +1,42 @@
+#!/usr/bin/env ruby
+# scripts/Makefiles can read and eval the output of this script and
+# use it as RUBYLIB
+require 'rubygems'
+require 'isolate'
+fp = File.open(__FILE__, "rb")
+fp.flock(File::LOCK_EX)
+
+ruby_engine = defined?(RUBY_ENGINE) ? RUBY_ENGINE : 'ruby'
+opts = {
+  :system => false,
+  # we want "ruby-1.8.7" and not "ruby-1.8", so disable :multiruby
+  :multiruby => false,
+  :path => "tmp/isolate/#{ruby_engine}-#{RUBY_VERSION}",
+}
+
+pid = fork do
+  Isolate.now!(opts) do
+    gem 'sqlite3-ruby', '1.2.5'
+    gem 'rack', '1.1.0'
+  end
+end
+_, status = Process.waitpid2(pid)
+status.success? or abort status.inspect
+lib_paths = Dir["#{opts[:path]}/gems/*-*/lib"].map { |x| File.expand_path(x) }
+libs = "tmp/isolate/.#{ruby_engine}-#{RUBY_VERSION}.libs"
+File.open("#{libs}.#$$", "w") { |fp| fp.puts lib_paths.join(':') }
+File.rename("#{libs}.#$$", libs)
+
+# pure Ruby gems can be shared across all Rubies
+%w(3.0.0).each do |rails_ver|
+  opts[:path] = "tmp/isolate/rails-#{rails_ver}"
+  pid = fork do
+    Isolate.now!(opts) do
+      gem 'rails', rails_ver
+    end
+  end
+  _, status = Process.waitpid2(pid)
+  status.success? or abort status.inspect
+  more = Dir["#{opts[:path]}/gems/*-*/lib"].map { |x| File.expand_path(x) }
+  lib_paths.concat(more)
+end
-- 
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