instiki/vendor/rails/activesupport/lib/active_support/core_ext/file.rb
Jacques Distler 6873fc8026 Upgrade to Rails 2.0.2
Upgraded to Rails 2.0.2, except that we maintain

   vendor/rails/actionpack/lib/action_controller/routing.rb

from Rail 1.2.6 (at least for now), so that Routes don't change. We still
get to enjoy Rails's many new features.

Also fixed a bug in Chunk-handling: disable WikiWord processing in tags (for real this time).
2007-12-21 01:48:59 -06:00

21 lines
678 B
Ruby

require 'tempfile'
# Write to a file atomically. Useful for situations where you don't
# want other processes or threads to see half-written files.
#
# File.atomic_write("important.file") do |file|
# file.write("hello")
# end
#
# If your temp directory is not on the same filesystem as the file you're
# trying to write, you can provide a different temporary directory.
#
# File.atomic_write("/data/something.imporant", "/data/tmp") do |f|
# file.write("hello")
# end
def File.atomic_write(file_name, temp_dir = Dir.tmpdir)
temp_file = Tempfile.new(File.basename(file_name), temp_dir)
yield temp_file
temp_file.close
File.rename(temp_file.path, file_name)
end