Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 45 insertions, 0 deletions

diff --git a/spec/mspec/lib/mspec/helpers/tmp.rb b/spec/mspec/lib/mspec/helpers/tmp.rb
new file mode 100644
index 0000000000..742eb57fdc
--- /dev/null
+++ b/spec/mspec/lib/mspec/helpers/tmp.rb
@@ -0,0 +1,45 @@
+# Creates a temporary directory in the current working directory
+# for temporary files created while running the specs. All specs
+# should clean up any temporary files created so that the temp
+# directory is empty when the process exits.
+
+SPEC_TEMP_DIR = File.expand_path(ENV["SPEC_TEMP_DIR"] || "rubyspec_temp")
+
+SPEC_TEMP_UNIQUIFIER = "0"
+
+SPEC_TEMP_DIR_PID = Process.pid
+
+at_exit do
+  begin
+    if SPEC_TEMP_DIR_PID == Process.pid
+      Dir.delete SPEC_TEMP_DIR if File.directory? SPEC_TEMP_DIR
+    end
+  rescue SystemCallError
+    STDERR.puts <<-EOM
+
+-----------------------------------------------------
+The rubyspec temp directory is not empty. Ensure that
+all specs are cleaning up temporary files:
+  #{SPEC_TEMP_DIR}
+-----------------------------------------------------
+
+    EOM
+  rescue Object => e
+    STDERR.puts "failed to remove spec temp directory"
+    STDERR.puts e.message
+  end
+end
+
+class Object
+  def tmp(name, uniquify=true)
+    Dir.mkdir SPEC_TEMP_DIR unless Dir.exist? SPEC_TEMP_DIR
+
+    if uniquify and !name.empty?
+      slash = name.rindex "/"
+      index = slash ? slash + 1 : 0
+      name.insert index, "#{SPEC_TEMP_UNIQUIFIER.succ!}-"
+    end
+
+    File.join SPEC_TEMP_DIR, name
+  end
+end