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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 logging
import shlex
from taskgraph.transforms.base import TransformSequence
from taskgraph.util.path import join as join_path
from taskgraph.util.path import match as match_path
from gecko_taskgraph.files_changed import get_changed_files
logger = logging.getLogger(__name__)
transforms = TransformSequence()
def get_patterns(job):
"""Get the "run on-changed" file patterns."""
optimization = job.get("optimization", {})
if optimization:
return optimization.copy().popitem()[1]
return []
def shlex_join(split_command):
"""shlex.join from Python 3.8+"""
return " ".join(shlex.quote(arg) for arg in split_command)
@transforms.add
def changed_clang_format(config, jobs):
"""
Transform for clang-format job to set the commandline to only check
C++ files that were changed in the current push rather than running on
the entire repository.
"""
for job in jobs:
if job.get("name", "") == "clang-format":
repository = config.params.get("comm_head_repository")
revision = config.params.get("comm_head_rev")
match_patterns = get_patterns(job)
changed_files = {
join_path("comm", file) for file in get_changed_files(repository, revision)
}
cpp_files = []
for pattern in match_patterns:
for path in changed_files:
if match_path(path, pattern):
cpp_files.append(path)
# In the event that no C/C++ files were changed in the current push,
# the commandline will end up being invalid. But, the clang-format
# job will get dropped by optimization, so it doesn't really matter.
if cpp_files:
job["run"]["command"] = job["run"]["command"].format(
changed_files=shlex_join(cpp_files)
)
yield job
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