[OE-core] [PATCH 06/17] wic: add default_image attribute to BitbakeVars

[Ed Bartosh]

New attribute is used when bitbake variable is requested without
specifying image name. The attribute should be set from outside,
for example when wic is called with '-e <image>' option.

Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
---
 scripts/lib/wic/utils/oe/misc.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/lib/wic/utils/oe/misc.py b/scripts/lib/wic/utils/oe/misc.py
index 41e435f..040176d 100644
--- a/scripts/lib/wic/utils/oe/misc.py
+++ b/scripts/lib/wic/utils/oe/misc.py
@@ -131,6 +131,9 @@ class BitbakeVars(defaultdict):
     def __init__(self):
         defaultdict.__init__(self, dict)
 
+        # default_image attribute should be set from outside
+        self.default_image = None
+
     def _parse_line(self, line, image):
         """
         Parse one line from bitbake -e output.
@@ -152,6 +155,9 @@ class BitbakeVars(defaultdict):
         Get bitbake variable value lazy way, i.e. run
         'bitbake -e' only when variable is requested.
         """
+        if not image:
+            image = self.default_image
+
         if image not in self:
             # Get bitbake -e output
             cmd = "bitbake -e"
-- 
2.1.4