diff options
Diffstat (limited to 'meta/lib/oe/license.py')
-rw-r--r-- | meta/lib/oe/license.py | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/meta/lib/oe/license.py b/meta/lib/oe/license.py index b230d3ef45..7ab66e762f 100644 --- a/meta/lib/oe/license.py +++ b/meta/lib/oe/license.py | |||
@@ -30,3 +30,33 @@ class LicenseVisitor(ast.NodeVisitor): | |||
30 | new_elements.append(element) | 30 | new_elements.append(element) |
31 | 31 | ||
32 | self.visit(ast.parse(' '.join(new_elements))) | 32 | self.visit(ast.parse(' '.join(new_elements))) |
33 | |||
34 | class FlattenVisitor(LicenseVisitor): | ||
35 | """Flatten a license tree (parsed from a string) by selecting one of each | ||
36 | set of OR options, in the way the user specifies""" | ||
37 | def __init__(self, choose_licenses): | ||
38 | self.choose_licenses = choose_licenses | ||
39 | self.licenses = [] | ||
40 | LicenseVisitor.__init__(self) | ||
41 | |||
42 | def visit_Str(self, node): | ||
43 | self.licenses.append(node.s) | ||
44 | |||
45 | def visit_BinOp(self, node): | ||
46 | if isinstance(node.op, ast.BitOr): | ||
47 | left = FlattenVisitor(self.choose_licenses) | ||
48 | left.visit(node.left) | ||
49 | |||
50 | right = FlattenVisitor(self.choose_licenses) | ||
51 | right.visit(node.right) | ||
52 | |||
53 | selected = self.choose_licenses(left.licenses, right.licenses) | ||
54 | self.licenses.extend(selected) | ||
55 | else: | ||
56 | self.generic_visit(node) | ||
57 | |||
58 | def flattened_licenses(licensestr, choose_licenses): | ||
59 | """Given a license string and choose_licenses function, return a flat list of licenses""" | ||
60 | flatten = FlattenVisitor(choose_licenses) | ||
61 | flatten.visit_string(licensestr) | ||
62 | return flatten.licenses | ||