17
19
"""Converters, etc for going between Bazaar and Git ids."""
19
from bzrlib import errors, foreign
20
from bzrlib.inventory import ROOT_ID
29
from bzrlib.inventory import (
21
32
from bzrlib.foreign import (
37
from bzrlib.xml_serializer import (
41
DEFAULT_FILE_MODE = stat.S_IFREG | 0644
27
44
def escape_file_id(file_id):
28
45
return file_id.replace('_', '__').replace(' ', '_s')
31
48
def unescape_file_id(file_id):
32
return file_id.replace("_s", " ").replace("__", "_")
51
while i < len(file_id):
53
ret.append(file_id[i])
55
if file_id[i+1] == '_':
57
elif file_id[i+1] == 's':
60
raise AssertionError("unknown escape character %s" % file_id[i+1])
66
def fix_person_identifier(text):
67
if "<" in text and ">" in text:
69
return "%s <%s>" % (text, text)
35
72
class BzrGitMapping(foreign.VcsMapping):
55
92
return bzr_rev_id[len(cls.revid_prefix)+1:], cls()
57
94
def generate_file_id(self, path):
95
# Git paths are just bytestrings
96
# We must just hope they are valid UTF-8..
60
return escape_file_id(path.encode('utf-8'))
99
return escape_file_id(path)
101
def parse_file_id(self, file_id):
102
if file_id == ROOT_ID:
104
return unescape_file_id(file_id)
62
106
def import_commit(self, commit):
63
107
"""Convert a git commit to a bzr revision.
68
112
raise AssertionError("Commit object can't be None")
69
113
rev = ForeignRevision(commit.id, self, self.revision_id_foreign_to_bzr(commit.id))
70
114
rev.parent_ids = tuple([self.revision_id_foreign_to_bzr(p) for p in commit.parents])
71
rev.message = commit.message.decode("utf-8", "replace")
72
rev.committer = str(commit.committer).decode("utf-8", "replace")
115
rev.message = escape_invalid_chars(commit.message.decode("utf-8", "replace"))[0]
116
rev.committer = escape_invalid_chars(str(commit.committer).decode("utf-8", "replace"))[0]
73
117
if commit.committer != commit.author:
74
rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
118
rev.properties['author'] = escape_invalid_chars(str(commit.author).decode("utf-8", "replace"))[0]
120
if commit.commit_time != commit.author_time:
121
rev.properties['author-timestamp'] = str(commit.author_time)
122
if commit.commit_timezone != commit.author_timezone:
123
rev.properties['author-timezone'] = "%d" % (commit.author_timezone, )
75
124
rev.timestamp = commit.commit_time
125
rev.timezone = commit.commit_timezone
79
def export_commit(self, rev, tree_sha):
80
"""Turn a Bazaar revision in to a Git commit
82
:param tree_sha: HACK parameter (until we can retrieve this from the mapping)
83
:return dulwich.objects.Commit represent the revision:
85
from dulwich.objects import Commit
87
commit._tree = tree_sha
88
for p in rev.parent_ids:
89
commit._parents.append(self.revision_id_bzr_to_foreign(p))
90
commit._message = rev.message
91
commit._committer = rev.committer
92
if 'author' in rev.properties:
93
commit._author = rev.properties['author']
95
commit._author = rev.committer
96
commit._commit_time = long(rev.timestamp)
101
129
class BzrGitMappingv1(BzrGitMapping):
102
130
revid_prefix = 'git-v1'
103
131
experimental = False
134
return self.revid_prefix
106
137
class BzrGitMappingExperimental(BzrGitMappingv1):
107
138
revid_prefix = 'git-experimental'
141
172
foreign_git = ForeignGit()
142
173
default_mapping = BzrGitMappingv1()
176
def text_to_blob(texts, entry):
177
from dulwich.objects import Blob
178
text = texts.get_record_stream([(entry.file_id, entry.revision)], 'unordered', True).next().get_bytes_as('fulltext')
184
def symlink_to_blob(entry):
185
from dulwich.objects import Blob
187
blob._text = entry.symlink_target
191
def entry_mode(entry):
192
if entry.kind == 'directory':
194
elif entry.kind == 'symlink':
196
elif entry.kind == 'file':
197
mode = stat.S_IFREG | 0644
205
def directory_to_tree(entry, lookup_ie_sha1):
206
from dulwich.objects import Tree
208
for name in sorted(entry.children.keys()):
209
ie = entry.children[name]
210
tree.add(entry_mode(ie), name.encode("utf-8"), lookup_ie_sha1(ie))
215
def inventory_to_tree_and_blobs(inventory, texts, mapping, cur=None):
216
"""Convert a Bazaar tree to a Git tree.
218
:return: Yields tuples with object sha1, object and path
220
from dulwich.objects import Tree
227
# stack contains the set of trees that we haven't
228
# finished constructing
229
for path, entry in inventory.iter_entries():
230
while stack and not path.startswith(osutils.pathjoin(cur, "")):
231
# We've hit a file that's not a child of the previous path
234
yield sha, tree, cur.encode("utf-8")
235
t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
236
cur, tree = stack.pop()
239
if entry.kind == "directory":
240
stack.append((cur, tree))
244
if entry.kind == "file":
245
blob = text_to_blob(texts, entry)
246
elif entry.kind == "symlink":
247
blob = symlink_to_blob(entry)
249
raise AssertionError("Unknown kind %s" % entry.kind)
251
yield sha, blob, path.encode("utf-8")
252
name = urlutils.basename(path).encode("utf-8")
253
tree.add(entry_mode(entry), name, sha)
255
while len(stack) > 1:
258
yield sha, tree, cur.encode("utf-8")
259
t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
260
cur, tree = stack.pop()
264
yield tree.id, tree, cur.encode("utf-8")
267
def revision_to_commit(rev, tree_sha, parent_lookup):
268
"""Turn a Bazaar revision in to a Git commit
270
:param tree_sha: Tree sha for the commit
271
:param parent_lookup: Function for looking up the GIT sha equiv of a bzr revision
272
:return dulwich.objects.Commit represent the revision:
274
from dulwich.objects import Commit
276
commit.tree = tree_sha
277
for p in rev.parent_ids:
278
git_p = parent_lookup(p)
279
if git_p is not None:
280
assert len(git_p) == 40, "unexpected length for %r" % git_p
281
commit.parents.append(git_p)
282
commit.message = rev.message.encode("utf-8")
283
commit.committer = fix_person_identifier(rev.committer.encode("utf-8"))
284
commit.author = fix_person_identifier(rev.get_apparent_authors()[0].encode("utf-8"))
285
commit.commit_time = long(rev.timestamp)
286
if 'author-timestamp' in rev.properties:
287
commit.author_time = long(rev.properties['author-timestamp'])
289
commit.author_time = commit.commit_time
290
commit.commit_timezone = rev.timezone
291
if 'author-timezone' in rev.properties:
292
commit.author_timezone = int(rev.properties['author-timezone'])
294
commit.author_timezone = commit.commit_timezone