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bitbake: lib/bb/utils: add docstring for contains() 

(Bitbake rev: e9174723ea6d0dff5f7f3042009761cf42284947)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ross Burton 2016-04-05 15:46:41 +01:00 committed by Richard Purdie
parent 524d04cb05
commit 004b939d1b
1 changed files with 19 additions and 1 deletions
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20
bitbake/lib/bb/utils.py
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@ -924,6 +924,24 @@ def to_boolean(string, default=None):
raise ValueError("Invalid value for to_boolean: %s" % string)
def contains(variable, checkvalues, truevalue, falsevalue, d):
"""Check if a variable contains all the values specified.
Arguments:
variable -- the variable name. This will be fetched and expanded (using
d.getVar(variable, True)) and then split into a set().
checkvalues -- if this is a string it is split on whitespace into a set(),
otherwise coerced directly into a set().
truevalue -- the value to return if checkvalues is a subset of variable.
falsevalue -- the value to return if variable is empty or if checkvalues is
not a subset of variable.
d -- the data store.
"""
val = d.getVar(variable, True)
if not val:
return falsevalue
@ -932,7 +950,7 @@ def contains(variable, checkvalues, truevalue, falsevalue, d):
checkvalues = set(checkvalues.split())
else:
checkvalues = set(checkvalues)
if checkvalues.issubset(val):
if checkvalues.issubset(val):
return truevalue
return falsevalue