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-rw-r--r--ec2init/util.py29
1 files changed, 29 insertions, 0 deletions
diff --git a/ec2init/util.py b/ec2init/util.py
new file mode 100644
index 00000000..8b36274e
--- /dev/null
+++ b/ec2init/util.py
@@ -0,0 +1,29 @@
+import yaml
+
+def read_conf(fname):
+ stream = file(fname)
+ conf = yaml.load(stream)
+ stream.close()
+ return conf
+
+def get_cfg_option_bool(yobj, key, default=False):
+ if not yobj.has_key(key): return default
+ val = yobj[key]
+ if yobj[key] in [ True, '1', 'on', 'yes', 'true']:
+ return True
+ return False
+
+def get_cfg_option_str(yobj, key, default=None):
+ if not yobj.has_key(key): return default
+ return yobj[key]
+
+# merge values from src into cand.
+# if src has a key, cand will not override
+def mergedict(src,cand):
+ if isinstance(src,dict) and isinstance(cand,dict):
+ for k,v in cand.iteritems():
+ if k not in src:
+ src[k] = v
+ else:
+ src[k] = merge(src[k],v)
+ return src