1 # Copyright 2010 Google Inc.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
20 if RUBY_PLATFORM =~ /mswin|win32|mingw|bccwin|cygwin/
22 # Confirm that all of these Windows environments actually have access
23 # to the `ver` command.
24 `ver`.sub(/\s*\[Version\s*/, '/').sub(']', '').strip
25 elsif RUBY_PLATFORM =~ /darwin/i
26 "Mac OS X/#{`sw_vers -productVersion`}"
27 elsif RUBY_PLATFORM == 'java'
28 # Get the information from java system properties to avoid spawning a
29 # sub-process, which is not friendly in some contexts (web servers).
31 name = java.lang.System.getProperty('os.name')
32 version = java.lang.System.getProperty('os.version')
35 `uname -sr`.sub(' ', '/')