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copy_files_to_temp_directory.py
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copy_files_to_temp_directory.py
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# create a temporary directory and copy the files needed for testing to it
import atexit, glob, io, os, pkgutil, re, shutil, subprocess, sys, tarfile, tempfile
from shutil import copy2, copystat
from util import die
INITIAL_DIR_NAME = "autotest"
def copy_files_to_temp_directory(args, parameters):
temp_dir = tempfile.mkdtemp()
atexit.register(cleanup, temp_dir=temp_dir, args=args)
initial_dir = os.path.join(temp_dir, INITIAL_DIR_NAME)
os.mkdir(initial_dir, 0o700)
if parameters["supplied_files_directory"]:
copy_directory(parameters["supplied_files_directory"], initial_dir)
fetch_submission(initial_dir, args)
os.chdir(initial_dir)
for expected_file in glob.glob("*.expected_*"):
os.chmod(expected_file, 0o400)
def fetch_submission(temp_dir, args):
if args.debug:
print(f"fetch_submission({temp_dir})", file=sys.stderr)
if args.tarfile:
# FIXME handle xz compression
if re.search(r"^https?://.*\.tar(.[a-z]+)?", args.tarfile):
os.chdir(temp_dir)
execute(["wget", "-O", "submission.tar", args.tarfile])
execute(["tar", "-x", "-f", "submission.tar"])
else:
execute(
["tar", "-x", "-C", temp_dir, "-f", args.tarfile],
print_command=args.debug,
)
elif args.directory:
copy_directory(args.directory, temp_dir)
elif args.git:
os.chdir(temp_dir)
if args.commit:
execute(["git", "clone", "--quiet", args.git, "."])
execute(["git", "checkout", "--quiet", args.commit])
else:
execute(["git", "clone", "--quiet", "--depth", "1", args.git, "."])
if os.path.isdir(args.exercise) and os.listdir(args.exercise):
print("cd", args.exercise)
os.chdir(args.exercise)
else:
# FIXME - can we remove this code
if (
os.path.isdir(".git")
and os.path.isdir(args.exercise)
and os.listdir(args.exercise)
and os.path.realpath(args.autotest_directory)
!= os.path.realpath(args.exercise)
):
print("cd", args.exercise)
os.chdir(args.exercise)
files_to_copy = set(args.file | args.optional_files)
if args.stdin:
if len(files_to_copy) != 1:
print(
"--stdin specified but tests requires multiple files",
file=sys.stderr,
)
sys.exit(1)
os.chdir(temp_dir)
file = files_to_copy.pop()
try:
with open(file, "w", encoding="utf-8") as f:
f.write(sys.stdin.read())
except IOError:
die(f"can not create {file}")
return
if args.debug:
print("files_to_copy:", files_to_copy, file=sys.stderr)
copied = set()
while files_to_copy:
file_pattern = files_to_copy.pop()
if file_pattern in copied:
continue
copied.add(file_pattern)
for file in glob.glob(file_pattern):
try:
# don't overwrite files which are supplied by the autotest
# can break old autotests
if os.path.exists(os.path.join(temp_dir, file)):
continue
shutil.copy(file, temp_dir)
if re.search(r"\.[pc].?$", file):
try:
# Kludge to pick up include files
with open(file, encoding="utf-8") as f:
for line in f:
m = re.search(
r'\b(require|include)\s*[\'"](.*?)[\'"]',
line,
flags=re.I,
)
if m:
files_to_copy.add(m.group(2))
m = re.search(
r"^\s*\b(use|require)\s*(\S+)", line, flags=re.I
)
if m:
files_to_copy.add(m.group(2) + ".pm")
except UnicodeDecodeError:
die(f"{file} is not a text file")
except IOError:
continue
# exit_status == 0 -> all tests worked
# exit_status == 1 -> 1 or more tests failed
# exit_status >- 2, internal error - testing not completed
def copy_directory(src, dst, symlinks=False, ignore=None):
names = os.listdir(src)
if ignore is not None:
ignored_names = ignore(src, names)
else:
ignored_names = set()
if not (os.path.exists(dst) and os.path.isdir(dst)):
os.makedirs(dst)
# we don't want to copy directory permission if the directory exists already
try:
copystat(src, dst)
except OSError:
pass
for name in names:
if name in ignored_names:
continue
srcname = os.path.join(src, name)
dstname = os.path.join(dst, name)
try:
if symlinks and os.path.islink(srcname):
linkto = os.readlink(srcname)
os.symlink(linkto, dstname)
elif os.path.isdir(srcname):
copy_directory(srcname, dstname, symlinks, ignore)
else:
copy2(srcname, dstname)
except OSError as why:
# we don't want to stop if there is an unreadable file - just produce an error
print("Warning:", why, file=sys.stderr)
def cleanup(temp_dir=None, args=None):
if args and args.debug >= 10:
return
if temp_dir and temp_dir.startswith("/tmp/"):
shutil.rmtree(temp_dir)
def execute(command, print_command=True):
if print_command:
print(" ".join(command))
if subprocess.call(command) != 0:
die(f"{command[0]} failed")
def load_embedded_autotest(exercise):
"""
if exercise is found as an embedded tar file
explode the tarfile to a temporary directory
and return the pathname for tests.txt
The script bundle_autotests.sh creates executablkes with embedded autotests.
"""
tar_data = pkgutil.get_data("embedded_autotests", exercise + ".tar")
if not tar_data:
return None
temp_dir = tempfile.mkdtemp()
atexit.register(cleanup, temp_dir=temp_dir)
buffer = io.BytesIO(tar_data)
with tarfile.open(fileobj=buffer, mode="r|xz") as t:
t.extractall(temp_dir)
return os.path.join(temp_dir, "tests.txt")