[bitbake-devel] [PATCH 1/2] lib/bb/utils: Add filter()
Peter Kjellerstedt
peter.kjellerstedt at axis.com
Tue Feb 21 15:18:59 UTC 2017
The bb.utils.filter() function can be used to filter a variable
containing whitespace separated words based on another set of words.
It has been modeled after the bb.utils.contains_any() function.
A typical example of how it can be used is to simplify constructs for
PACKAGECONFIG that depend on DISTRO_FEATURES:
-PACKAGECONFIG ?= "\
- ${@bb.utils.contains('DISTRO_FEATURES', 'acl', 'acl', '', d)} \
- ${@bb.utils.contains('DISTRO_FEATURES', 'selinux', 'selinux', '', d)} \
-"
+PACKAGECONFIG ?= "${@bb.utils.filter('DISTRO_FEATURES', 'acl selinux', d)}"
Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt at axis.com>
---
bitbake/lib/bb/utils.py | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py
index 2845126..d6bcfa3 100644
--- a/bitbake/lib/bb/utils.py
+++ b/bitbake/lib/bb/utils.py
@@ -979,6 +979,30 @@ def contains_any(variable, checkvalues, truevalue, falsevalue, d):
return truevalue
return falsevalue
+def filter(variable, checkvalues, d):
+ """Return all words in the variable that are present in the checkvalues.
+
+ Arguments:
+
+ variable -- the variable name. This will be fetched and expanded (using
+ d.getVar(variable)) 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().
+
+ d -- the data store.
+ """
+
+ val = d.getVar(variable)
+ if not val:
+ return ''
+ val = set(val.split())
+ if isinstance(checkvalues, str):
+ checkvalues = set(checkvalues.split())
+ else:
+ checkvalues = set(checkvalues)
+ return ' '.join(sorted(checkvalues & val))
+
def cpu_count():
return multiprocessing.cpu_count()
--
2.9.0
More information about the bitbake-devel
mailing list