bitbake: cooker: add state.get_name method

Added method to convert state code into the human readable name.
It will be used in logging and error reporting.

(Bitbake rev: 9ec6379b27d210214d0b3f2e55962f721b7f5f51)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/cooker.py

@@ -67,6 +67,14 @@ class CollectionError(bb.BBHandledException):
 class state:
     initial, parsing, running, shutdown, forceshutdown, stopped, error = range(7)
 
+    @classmethod
+    def get_name(cls, code):
+        for name in dir(cls):
+            value = getattr(cls, name)
+            if type(value) == type(cls.initial) and value == code:
+                return name
+        raise ValueError("Invalid status code: %s" % code)
+
 
 class SkippedPackage:
     def __init__(self, info = None, reason = None):