1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
# Copyright (C) 2012 Jelmer Vernooij <jelmer@samba.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Support for pristine tar deltas."""
from base64 import (
standard_b64decode,
)
from dulwich.objects import (
Blob,
Tree,
)
import stat
README_CONTENTS = """\
This branch contains delta files that pristine-tar can use to
regenerate tarballs for its own releases.
"""
def revision_pristine_tar_data(rev):
"""Export the pristine tar data from a revision."""
if 'deb-pristine-delta' in rev.properties:
uuencoded = rev.properties['deb-pristine-delta']
kind = 'gz'
elif 'deb-pristine-delta-bz2' in rev.properties:
uuencoded = rev.properties['deb-pristine-delta-bz2']
kind = 'bz2'
elif 'deb-pristine-delta-xz' in rev.properties:
uuencoded = rev.properties['deb-pristine-delta-xz']
kind = 'xz'
else:
raise KeyError(rev.revision_id)
return (standard_b64decode(uuencoded), kind)
def get_pristine_tar_tree(repo):
"""Retrieve the pristine tar tree for a repository.
"""
try:
cid = repo.refs["refs/heads/pristine-tar"]
except KeyError:
return Tree()
tid = repo.object_store[cid].tree
return repo.object_store[tid]
def read_git_pristine_tar_data(repo, filename):
"""Read pristine data from a Git repository.
:param repo: Git repository to read from
:param filename: Name of file to read
:return: Tuple with delta and id
"""
tree = get_pristine_tar_tree(repo)
delta = tree[filename + ".delta"][1]
gitid = tree[filename + ".id"][1]
return (repo.object_store[delta].data,
repo.object_store[gitid].data)
def store_git_pristine_tar_data(repo, filename, delta, gitid,
message=None, **kwargs):
"""Add pristine tar data to a Git repository.
:param repo: Git repository to add data to
:param filename: Name of file to store for
:param delta: pristine-tar delta
:param gitid: Git id the pristine tar delta is generated against
"""
delta_ob = Blob.from_string(delta)
delta_name = filename + ".delta"
id_ob = Blob.from_string(gitid)
id_name = filename + ".id"
objects = [
(delta_ob, delta_name),
(id_ob, id_name)]
tree = get_pristine_tar_tree(repo)
tree.add(delta_name, stat.S_IFREG | 0644, delta_ob.id)
tree.add(id_name, stat.S_IFREG | 0644, id_ob.id)
if not "README" in tree:
readme_ob = Blob.from_string(README_CONTENTS)
objects.append((readme_ob, "README"))
tree.add("README", stat.S_IFREG | 0644, readme_ob.id)
objects.append((tree, ""))
repo.object_store.add_objects(objects)
if message is None:
message = 'pristine-tar data for %s' % filename
return repo.do_commit(ref='refs/heads/pristine-tar', tree=tree.id,
message=message, **kwargs)
|