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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import functools
from pathlib import Path
from gecko_taskgraph import GECKO
@functools.cache
def _get_taskgraph_sparse_profile():
"""
Parse the taskgraph sparse profile and return the paths and globs it includes.
"""
# We need this nested function to handle %include directives recursively
def parse(profile_path):
paths = set()
globs = set()
full_path = Path(GECKO) / profile_path
if not full_path.exists():
raise FileNotFoundError(
f"Sparse profile '{full_path.stem}' not found at {full_path}"
)
for raw_line in full_path.read_text().splitlines():
line = raw_line.strip()
if not line or line.startswith("#") or line.startswith("["):
continue
if line.startswith("%include "):
included_profile = line[len("%include ") :].strip()
included_paths, included_globs = parse(included_profile)
paths.update(included_paths)
globs.update(included_globs)
elif line.startswith("path:"):
path = line[len("path:") :].strip()
paths.add(Path(path))
elif line.startswith("glob:"):
glob = line[len("glob:") :].strip()
globs.add(glob)
return paths, globs
return parse("build/sparse-profiles/taskgraph")
@functools.cache
def is_path_covered_by_taskgraph_sparse_profile(path):
"""
Check if a given path would be included in the taskgraph sparse checkout.
"""
profile_paths, profile_globs = _get_taskgraph_sparse_profile()
path = Path(path)
for profile_path in profile_paths:
if path == profile_path or profile_path in path.parents:
return True
# Path.match requires at least one directory for ** patterns to match
# root-level files, so we prepend a fake parent directory
path_with_parent = Path("_", path)
for pattern in profile_globs:
if path_with_parent.match(pattern):
return True
return False
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