# 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 hashlib
import mozpack.path
as mozpath
from mozbuild.util
import memoize
from mozversioncontrol
import get_repository_object
@memoize
def hash_path(path):
"""Hash a single file.
Returns the SHA-256 hash
in hex form.
"""
with open(path, mode=
"rb")
as fh:
return hashlib.sha256(fh.read()).hexdigest()
@memoize
def get_file_finder(base_path):
return get_repository_object(base_path).get_tracked_files_finder(base_path)
def hash_paths(base_path, patterns):
"""
Give a list of path patterns,
return a digest of the contents of all
the corresponding files, similarly to git tree objects
or mercurial
manifests.
Each file
is hashed. The list of all hashes
and file paths
is then
itself hashed to produce the result.
"""
finder = get_file_finder(base_path)
h = hashlib.sha256()
files = {}
if finder:
for pattern
in patterns:
found = list(finder.find(pattern))
if found:
files.update(found)
else:
raise Exception(
"%s did not match anything" % pattern)
for path
in sorted(files.keys()):
if path.endswith((
".pyc",
".pyd",
".pyo")):
continue
h.update(
"{} {}\n".format(
hash_path(mozpath.abspath(mozpath.join(base_path, path))),
mozpath.normsep(path),
).encode(
"utf-8")
)
return h.hexdigest()
