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import os
import subprocess
import tarfile
import logging
from .file_finder import scm_find_files
from .utils import trace
log = logging.getLogger(__name__)
def _git_toplevel(path):
try:
with open(os.devnull, "wb") as devnull:
out = subprocess.check_output(
["git", "rev-parse", "--show-toplevel"],
cwd=(path or "."),
universal_newlines=True,
stderr=devnull,
)
trace("find files toplevel", out)
return os.path.normcase(os.path.realpath(out.strip()))
except subprocess.CalledProcessError:
# git returned error, we are not in a git repo
return None
except OSError:
# git command not found, probably
return None
def _git_interpret_archive(fd, toplevel):
with tarfile.open(fileobj=fd, mode="r|*") as tf:
git_files = set()
git_dirs = {toplevel}
for member in tf.getmembers():
name = os.path.normcase(member.name).replace("/", os.path.sep)
if member.type == tarfile.DIRTYPE:
git_dirs.add(name)
else:
git_files.add(name)
return git_files, git_dirs
def _git_ls_files_and_dirs(toplevel):
# use git archive instead of git ls-file to honor
# export-ignore git attribute
cmd = ["git", "archive", "--prefix", toplevel + os.path.sep, "HEAD"]
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, cwd=toplevel)
try:
try:
return _git_interpret_archive(proc.stdout, toplevel)
finally:
# ensure we avoid resource warnings by cleaning up the process
proc.terminate()
except Exception:
if proc.wait() != 0:
log.exception("listing git files failed - pretending there aren't any")
return (), ()
def git_find_files(path=""):
toplevel = _git_toplevel(path)
if not toplevel:
return []
git_files, git_dirs = _git_ls_files_and_dirs(toplevel)
return scm_find_files(path, git_files, git_dirs)
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