oe/utils.py: Add vartrue()

It can be used to simplify code like:
"${@['iffalse', 'iftrue'][var]}"

(From OE-Core rev: fc5a5af7bc3619f575988a75efc0c4fe15478b2d)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/meta/lib/oe/utils.py b/meta/lib/oe/utils.py
index fbda7035f1..93b0763b0a 100644
--- a/meta/lib/oe/utils.py
+++ b/meta/lib/oe/utils.py
@@ -25,6 +25,13 @@ def conditional(variable, checkvalue, truevalue, falsevalue, d):
     else:
         return falsevalue
 
+def vartrue(var, iftrue, iffalse, d):
+    import oe.types
+    if oe.types.boolean(d.getVar(var)):
+        return iftrue
+    else:
+        return iffalse
+
 def less_or_equal(variable, checkvalue, truevalue, falsevalue, d):
     if float(d.getVar(variable)) <= float(checkvalue):
         return truevalue
@@ -467,3 +474,4 @@ class ImageQAFailed(bb.build.FuncFailed):
             msg = msg + ' (%s)' % self.description
 
         return msg
+