From d3402eac1ca362e1db0b40eb677e7cfc74a3d2c9 Mon Sep 17 00:00:00 2001
From: Joshua Harlow <harlowja@yahoo-inc.com>
Date: Tue, 26 Jun 2012 12:16:39 -0700
Subject: 1. Add a chdir context manager 2. Add a abs path joining function
 that will return the absolute path of    a combined path (where applicable)

---
 cloudinit/util.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/cloudinit/util.py b/cloudinit/util.py
index 2f5ed275..f95a5d07 100644
--- a/cloudinit/util.py
+++ b/cloudinit/util.py
@@ -486,6 +486,16 @@ def mergedict(src, cand):
     return src
 
 
+@contextlib.contextmanager
+def chdir(ndir):
+    curr = os.getcwd()
+    try:
+        os.chdir(ndir)
+        yield ndir
+    finally:
+        os.chdir(curr)
+
+
 @contextlib.contextmanager
 def umask(n_msk):
     old = os.umask(n_msk)
@@ -1285,6 +1295,10 @@ def subp(args, data=None, rcs=None, env=None, capture=True, shell=False):
     return (out, err)
 
 
+def abs_join(*paths):
+    return os.path.abspath(os.path.join(*paths))
+
+
 # shellify, takes a list of commands
 #  for each entry in the list
 #    if it is an array, shell protect it (with single ticks)
-- 
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