17
19
"""Converters, etc for going between Bazaar and Git ids."""
19
from bzrlib import errors, foreign, urlutils
20
from bzrlib.inventory import ROOT_ID
31
from bzrlib.inventory import (
21
34
from bzrlib.foreign import (
40
DEFAULT_FILE_MODE = stat.S_IFREG | 0644
27
43
def escape_file_id(file_id):
28
44
return file_id.replace('_', '__').replace(' ', '_s')
31
47
def unescape_file_id(file_id):
32
return file_id.replace("_s", " ").replace("__", "_")
50
while i < len(file_id):
52
ret.append(file_id[i])
54
if file_id[i+1] == '_':
56
elif file_id[i+1] == 's':
59
raise AssertionError("unknown escape character %s" % file_id[i+1])
65
def fix_person_identifier(text):
66
if "<" in text and ">" in text:
68
return "%s <%s>" % (text, text)
71
def warn_escaped(commit, num_escaped):
72
trace.warning("Escaped %d XML-invalid characters in %s. Will be unable "
73
"to regenerate the SHA map.", num_escaped, commit)
76
def warn_unusual_mode(commit, path, mode):
77
trace.warning("Unusual file mode %o for %s in %s. Will be unable to "
78
"regenerate the SHA map.", mode, path, commit)
81
def squash_revision(target_repo, rev):
82
"""Remove characters that can't be stored from a revision, if necessary.
84
:param target_repo: Repository in which the revision will be stored
85
:param rev: Revision object, will be modified in-place
87
if not getattr(target_repo._serializer, "squashes_xml_invalid_characters", True):
89
from bzrlib.xml_serializer import escape_invalid_chars
90
rev.message, num_escaped = escape_invalid_chars(rev.message)
92
warn_escaped(rev.foreign_revid, num_escaped)
93
if 'author' in rev.properties:
94
rev.properties['author'], num_escaped = escape_invalid_chars(
95
rev.properties['author'])
97
warn_escaped(rev.foreign_revid, num_escaped)
98
rev.committer, num_escaped = escape_invalid_chars(rev.committer)
100
warn_escaped(rev.foreign_revid, num_escaped)
35
103
class BzrGitMapping(foreign.VcsMapping):
55
123
return bzr_rev_id[len(cls.revid_prefix)+1:], cls()
57
125
def generate_file_id(self, path):
126
# Git paths are just bytestrings
127
# We must just hope they are valid UTF-8..
60
return escape_file_id(path.encode('utf-8'))
130
return escape_file_id(path)
132
def parse_file_id(self, file_id):
133
if file_id == ROOT_ID:
135
return unescape_file_id(file_id)
137
def import_unusual_file_modes(self, rev, unusual_file_modes):
138
if unusual_file_modes:
139
rev.properties['file-modes'] = bencode.bencode(unusual_file_modes)
62
141
def import_commit(self, commit):
63
142
"""Convert a git commit to a bzr revision.
121
209
default_mapping = BzrGitMappingv1()
124
def inventory_to_tree_and_blobs(repo, mapping, revision_id):
125
from dulwich.objects import Tree, Blob
126
from bzrlib.inventory import InventoryDirectory, InventoryFile
212
def text_to_blob(texts, entry):
213
from dulwich.objects import Blob
214
text = texts.get_record_stream([(entry.file_id, entry.revision)], 'unordered', True).next().get_bytes_as('fulltext')
220
def symlink_to_blob(entry):
221
from dulwich.objects import Blob
223
blob._text = entry.symlink_target
227
def mode_is_executable(mode):
228
"""Check if mode should be considered executable."""
229
return bool(mode & 0111)
233
"""Determine the Bazaar inventory kind based on Unix file mode."""
234
entry_kind = (mode & 0700000) / 0100000
237
elif entry_kind == 1:
238
file_kind = (mode & 070000) / 010000
244
return 'tree-reference'
246
raise AssertionError(
247
"Unknown file kind %d, perms=%o." % (file_kind, mode,))
249
raise AssertionError(
250
"Unknown kind, perms=%r." % (mode,))
253
def entry_mode(entry):
254
"""Determine the git file mode for an inventory entry."""
255
if entry.kind == 'directory':
257
elif entry.kind == 'symlink':
259
elif entry.kind == 'file':
260
mode = stat.S_IFREG | 0644
268
def directory_to_tree(entry, lookup_ie_sha1):
269
from dulwich.objects import Tree
271
for name in sorted(entry.children.keys()):
272
ie = entry.children[name]
273
tree.add(entry_mode(ie), name.encode("utf-8"), lookup_ie_sha1(ie))
278
def inventory_to_tree_and_blobs(inventory, texts, mapping, cur=None):
279
"""Convert a Bazaar tree to a Git tree.
281
:return: Yields tuples with object sha1, object and path
283
from dulwich.objects import Tree
132
inv = repo.get_inventory(revision_id)
134
290
# stack contains the set of trees that we haven't
135
291
# finished constructing
137
for path, entry in inv.iter_entries():
138
while stack and not path.startswith(cur):
292
for path, entry in inventory.iter_entries():
293
while stack and not path.startswith(osutils.pathjoin(cur, "")):
294
# We've hit a file that's not a child of the previous path
140
sha = tree.sha().hexdigest()
297
yield sha, tree, cur.encode("utf-8")
142
298
t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
143
299
cur, tree = stack.pop()
146
if type(entry) == InventoryDirectory:
302
if entry.kind == "directory":
147
303
stack.append((cur, tree))
151
if type(entry) == InventoryFile:
152
#FIXME: We can make potentially make this Lazy to avoid shaing lots of stuff
153
# and having all these objects in memory at once
155
_, blob._text = repo.iter_files_bytes([(entry.file_id, entry.revision, path)]).next()
156
sha = blob.sha().hexdigest()
157
yield sha, blob, path
307
if entry.kind == "file":
308
blob = text_to_blob(texts, entry)
309
elif entry.kind == "symlink":
310
blob = symlink_to_blob(entry)
312
raise AssertionError("Unknown kind %s" % entry.kind)
314
yield sha, blob, path.encode("utf-8")
159
315
name = urlutils.basename(path).encode("utf-8")
160
mode = stat.S_IFREG | 0644
163
tree.add(mode, name, sha)
316
tree.add(entry_mode(entry), name, sha)
165
318
while len(stack) > 1:
167
sha = tree.sha().hexdigest()
321
yield sha, tree, cur.encode("utf-8")
169
322
t = (stat.S_IFDIR, urlutils.basename(cur).encode('UTF-8'), sha)
170
323
cur, tree = stack.pop()
174
yield tree.sha().hexdigest(), tree, cur
327
yield tree.id, tree, cur.encode("utf-8")
177
330
def revision_to_commit(rev, tree_sha, parent_lookup):
184
337
from dulwich.objects import Commit
185
338
commit = Commit()
186
commit._tree = tree_sha
339
commit.tree = tree_sha
187
340
for p in rev.parent_ids:
188
341
git_p = parent_lookup(p)
189
342
if git_p is not None:
190
commit._parents.append(git_p)
191
commit._message = rev.message.encode("utf-8")
192
commit._committer = rev.committer.encode("utf-8")
193
commit._author = rev.get_apparent_author().encode("utf-8")
194
commit._commit_time = long(rev.timestamp)
343
assert len(git_p) == 40, "unexpected length for %r" % git_p
344
commit.parents.append(git_p)
345
commit.message = rev.message.encode("utf-8")
346
commit.committer = fix_person_identifier(rev.committer.encode("utf-8"))
347
commit.author = fix_person_identifier(rev.get_apparent_authors()[0].encode("utf-8"))
348
commit.commit_time = long(rev.timestamp)
349
if 'author-timestamp' in rev.properties:
350
commit.author_time = long(rev.properties['author-timestamp'])
352
commit.author_time = commit.commit_time
353
commit.commit_timezone = rev.timezone
354
if 'author-timezone' in rev.properties:
355
commit.author_timezone = int(rev.properties['author-timezone'])
357
commit.author_timezone = commit.commit_timezone