Adding a "withenv" execution util method, and using it in :exec for path handling. Next will be other env handling.

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@1567 980ebf18-57e1-0310-9a29-db15c13687c0

1 files changed, 21 insertions, 0 deletions

diff --git a/lib/puppet/util/execution.rb b/lib/puppet/util/execution.rb
new file mode 100644
index 000000000..67b5ed692
--- /dev/null
+++ b/lib/puppet/util/execution.rb
@@ -0,0 +1,21 @@
+module Puppet::Util::Execution
+    module_function 
+
+    # Run some code with a specific environment.  Resets the environment back to
+    # what it was at the end of the code.
+    def withenv(hash)
+        oldvals = {}
+        hash.each do |name, val|
+            name = name.to_s
+            oldvals[name] = ENV[name]
+        end
+
+        yield
+    ensure
+        oldvals.each do |name, val|
+            ENV[name] = val
+        end
+    end
+end
+
+# $Id$