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#!/usr/bin/env python3
import sys
import xml.etree.ElementTree as ET
FDO_XMLNS = "{http://www.freedesktop.org/standards/shared-mime-info}"
def test_sub_class_ofs(fdo_xml: str) -> int:
with open(fdo_xml, "rb") as f:
tree = ET.parse(f)
errors = 0
mime_types = set()
sub_class_ofs = set()
for elem in tree.findall(f"{FDO_XMLNS}mime-type"):
mime_type = elem.attrib["type"]
mime_types.add(mime_type)
for elem in elem.findall(f"{FDO_XMLNS}sub-class-of"):
sub_class_of = elem.attrib["type"]
if mime_type == sub_class_of:
print(f"{fdo_xml}: type {mime_type} is sub-class-of itself",
file=sys.stderr)
errors += 1
sub_class_ofs.add(sub_class_of)
assert mime_types and sub_class_ofs
for not_found in sub_class_ofs - mime_types:
print(f"{fdo_xml}: parent sub-class-of type {not_found} not found",
file=sys.stderr)
errors += 1
return errors
if __name__ == "__main__":
if len(sys.argv) != 2:
print(f"Usage: {__file__} FREEDESKTOP_ORG_XML", file=sys.stderr)
sys.exit(2)
sys.exit(test_sub_class_ofs(sys.argv[1]) and 1 or 0)
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