17
19
"""Converters, etc for going between Bazaar and Git ids."""
19
from bzrlib import errors, foreign
20
from bzrlib.inventory import ROOT_ID
31
from bzrlib import bencode
33
from bzrlib.util import bencode
34
from bzrlib.inventory import (
21
37
from bzrlib.foreign import (
43
DEFAULT_FILE_MODE = stat.S_IFREG | 0644
27
46
def escape_file_id(file_id):
28
47
return file_id.replace('_', '__').replace(' ', '_s')
31
50
def unescape_file_id(file_id):
32
return file_id.replace("_s", " ").replace("__", "_")
53
while i < len(file_id):
55
ret.append(file_id[i])
57
if file_id[i+1] == '_':
59
elif file_id[i+1] == 's':
62
raise AssertionError("unknown escape character %s" % file_id[i+1])
68
def fix_person_identifier(text):
69
if "<" in text and ">" in text:
71
return "%s <%s>" % (text, text)
74
def warn_escaped(commit, num_escaped):
75
trace.warning("Escaped %d XML-invalid characters in %s. Will be unable "
76
"to regenerate the SHA map.", num_escaped, commit)
79
def warn_unusual_mode(commit, path, mode):
80
trace.mutter("Unusual file mode %o for %s in %s. Storing as revision property. ",
84
def squash_revision(target_repo, rev):
85
"""Remove characters that can't be stored from a revision, if necessary.
87
:param target_repo: Repository in which the revision will be stored
88
:param rev: Revision object, will be modified in-place
90
if not getattr(target_repo._serializer, "squashes_xml_invalid_characters", True):
92
from bzrlib.xml_serializer import escape_invalid_chars
93
rev.message, num_escaped = escape_invalid_chars(rev.message)
95
warn_escaped(rev.foreign_revid, num_escaped)
96
if 'author' in rev.properties:
97
rev.properties['author'], num_escaped = escape_invalid_chars(
98
rev.properties['author'])
100
warn_escaped(rev.foreign_revid, num_escaped)
101
rev.committer, num_escaped = escape_invalid_chars(rev.committer)
103
warn_escaped(rev.foreign_revid, num_escaped)
35
106
class BzrGitMapping(foreign.VcsMapping):
55
126
return bzr_rev_id[len(cls.revid_prefix)+1:], cls()
57
128
def generate_file_id(self, path):
129
# Git paths are just bytestrings
130
# We must just hope they are valid UTF-8..
60
return escape_file_id(path.encode('utf-8'))
133
return escape_file_id(path)
135
def parse_file_id(self, file_id):
136
if file_id == ROOT_ID:
138
return unescape_file_id(file_id)
140
def import_unusual_file_modes(self, rev, unusual_file_modes):
141
if unusual_file_modes:
142
ret = [(name, unusual_file_modes[name]) for name in sorted(unusual_file_modes.keys())]
143
rev.properties['file-modes'] = bencode.bencode(ret)
145
def export_unusual_file_modes(self, rev):
147
return dict([(self.generate_file_id(path), mode) for (path, mode) in bencode.bdecode(rev.properties['file-modes'])])
62
151
def import_commit(self, commit):
63
152
"""Convert a git commit to a bzr revision.
72
161
rev.committer = str(commit.committer).decode("utf-8", "replace")
73
162
if commit.committer != commit.author:
74
163
rev.properties['author'] = str(commit.author).decode("utf-8", "replace")
165
if commit.commit_time != commit.author_time:
166
rev.properties['author-timestamp'] = str(commit.author_time)
167
if commit.commit_timezone != commit.author_timezone:
168
rev.properties['author-timezone'] = "%d" % (commit.author_timezone, )
75
169
rev.timestamp = commit.commit_time
170
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
174
class BzrGitMappingv1(BzrGitMapping):
102
175
revid_prefix = 'git-v1'
103
176
experimental = False
179
return self.revid_prefix
106
182
class BzrGitMappingExperimental(BzrGitMappingv1):
107
183
revid_prefix = 'git-experimental'
141
218
foreign_git = ForeignGit()
142
219
default_mapping = BzrGitMappingv1()
222
def text_to_blob(texts, entry):
223
from dulwich.objects import Blob
224
text = texts.get_record_stream([(entry.file_id, entry.revision)], 'unordered', True).next().get_bytes_as('fulltext')
230
def symlink_to_blob(entry):
231
from dulwich.objects import Blob
233
blob._text = entry.symlink_target
237
def mode_is_executable(mode):
238
"""Check if mode should be considered executable."""
239
return bool(mode & 0111)
243
"""Determine the Bazaar inventory kind based on Unix file mode."""
244
entry_kind = (mode & 0700000) / 0100000
247
elif entry_kind == 1:
248
file_kind = (mode & 070000) / 010000
254
return 'tree-reference'
256
raise AssertionError(
257
"Unknown file kind %d, perms=%o." % (file_kind, mode,))
259
raise AssertionError(
260
"Unknown kind, perms=%r." % (mode,))
263
def entry_mode(entry):
264
"""Determine the git file mode for an inventory entry."""
265
if entry.kind == 'directory':
267
elif entry.kind == 'symlink':
269
elif entry.kind == 'file':
270
mode = stat.S_IFREG | 0644
278
def directory_to_tree(entry, lookup_ie_sha1, unusual_modes):
279
from dulwich.objects import Tree
281
for name in sorted(entry.children.keys()):
282
ie = entry.children[name]
284
mode = unusual_modes[ie.file_id]
286
mode = entry_mode(ie)
287
tree.add(mode, name.encode("utf-8"), lookup_ie_sha1(ie))
292
def extract_unusual_modes(rev):
294
foreign_revid, mapping = mapping_registry.parse_revision_id(rev.revision_id)
295
except errors.InvalidRevisionId:
298
return mapping.export_unusual_file_modes(rev)
301
def inventory_to_tree_and_blobs(inventory, texts, mapping, unusual_modes, cur=None):
302
"""Convert a Bazaar tree to a Git tree.
304
:return: Yields tuples with object sha1, object and path
306
from dulwich.objects import Tree
313
# stack contains the set of trees that we haven't
314
# finished constructing
315
for path, entry in inventory.iter_entries():
316
while stack and not path.startswith(osutils.pathjoin(cur, "")):
317
# We've hit a file that's not a child of the previous path
320
yield sha, tree, cur.encode("utf-8")
321
mode = unusual_modes.get(cur.encode("utf-8"), stat.S_IFDIR)
322
t = (mode, urlutils.basename(cur).encode('UTF-8'), sha)
323
cur, tree = stack.pop()
326
if entry.kind == "directory":
327
stack.append((cur, tree))
331
if entry.kind == "file":
332
blob = text_to_blob(texts, entry)
333
elif entry.kind == "symlink":
334
blob = symlink_to_blob(entry)
336
raise AssertionError("Unknown kind %s" % entry.kind)
338
yield sha, blob, path.encode("utf-8")
339
name = urlutils.basename(path).encode("utf-8")
340
mode = unusual_modes.get(path.encode("utf-8"), entry_mode(entry))
341
tree.add(mode, name, sha)
343
while len(stack) > 1:
346
yield sha, tree, cur.encode("utf-8")
347
mode = unusual_modes.get(cur.encode('utf-8'), stat.S_IFDIR)
348
t = (mode, urlutils.basename(cur).encode('UTF-8'), sha)
349
cur, tree = stack.pop()
353
yield tree.id, tree, cur.encode("utf-8")
356
def revision_to_commit(rev, tree_sha, parent_lookup):
357
"""Turn a Bazaar revision in to a Git commit
359
:param tree_sha: Tree sha for the commit
360
:param parent_lookup: Function for looking up the GIT sha equiv of a bzr revision
361
:return dulwich.objects.Commit represent the revision:
363
from dulwich.objects import Commit
365
commit.tree = tree_sha
366
for p in rev.parent_ids:
367
git_p = parent_lookup(p)
368
if git_p is not None:
369
assert len(git_p) == 40, "unexpected length for %r" % git_p
370
commit.parents.append(git_p)
371
commit.message = rev.message.encode("utf-8")
372
commit.committer = fix_person_identifier(rev.committer.encode("utf-8"))
373
commit.author = fix_person_identifier(rev.get_apparent_authors()[0].encode("utf-8"))
374
commit.commit_time = long(rev.timestamp)
375
if 'author-timestamp' in rev.properties:
376
commit.author_time = long(rev.properties['author-timestamp'])
378
commit.author_time = commit.commit_time
379
commit.commit_timezone = rev.timezone
380
if 'author-timezone' in rev.properties:
381
commit.author_timezone = int(rev.properties['author-timezone'])
383
commit.author_timezone = commit.commit_timezone