20
20
# files whose id differs only in case. That should probably be forbidden.
23
25
from cStringIO import StringIO
27
28
from bzrlib.weavefile import read_weave, write_weave_v5
28
29
from bzrlib.weave import Weave
40
41
FILE_SUFFIX = '.weave'
42
def __init__(self, transport, prefixed=False, precious=False):
43
self._transport = transport
44
self._prefixed = prefixed
43
def __init__(self, transport, prefixed=False, precious=False,
44
dir_mode=None, file_mode=None):
45
super(WeaveStore, self).__init__(transport,
46
dir_mode=dir_mode, file_mode=file_mode,
47
prefixed=prefixed, compressed=False)
45
48
self._precious = precious
47
50
def filename(self, file_id):
48
51
"""Return the path relative to the transport root."""
50
return hash_prefix(file_id) + file_id + WeaveStore.FILE_SUFFIX
53
return hash_prefix(file_id) + urllib.quote(file_id) + WeaveStore.FILE_SUFFIX
52
return file_id + WeaveStore.FILE_SUFFIX
55
return urllib.quote(file_id) + WeaveStore.FILE_SUFFIX
54
57
def __iter__(self):
55
58
l = len(WeaveStore.FILE_SUFFIX)
56
for relpath, st in self._iter_relpaths():
59
for relpath in self._iter_files_recursive():
57
60
if relpath.endswith(WeaveStore.FILE_SUFFIX):
58
61
yield os.path.basename(relpath[:-l])
60
def __contains__(self, fileid):
63
def has_id(self, fileid):
62
64
return self._transport.has(self.filename(fileid))
64
66
def _get(self, file_id):
67
69
def _put(self, file_id, f):
70
self._transport.mkdir(hash_prefix(file_id))
72
self._transport.mkdir(hash_prefix(file_id), mode=self._dir_mode)
73
return self._transport.put(self.filename(file_id), f)
75
return self._transport.put(self.filename(file_id), f, mode=self._file_mode)
75
77
def get_weave(self, file_id, transaction):
76
78
weave = transaction.map.find_weave(file_id)
80
82
w = read_weave(self._get(file_id))
81
83
transaction.map.add_weave(file_id, w)
82
84
transaction.register_clean(w, precious=self._precious)
85
# TODO: jam 20051219 This should check if there is a prelude
86
# which is already cached, and if so, should remove it
87
# But transaction doesn't seem to have a 'remove'
88
# One workaround would be to re-add the object with
92
def get_weave_prelude(self, file_id, transaction):
94
weave = transaction.map.find_weave(weave_id)
96
mutter("cache hit in %s for %s", self, weave_id)
98
# We want transactions to also cache preludes if that
99
# is all that we are loading. So we need a unique
100
# identifier, so that someone who wants the whole text
101
# won't get just the prelude
102
weave_id = 'PRELUDE-' + file_id
103
weave = transaction.map.find_weave(weave_id)
105
mutter("cache hit in %s for %s", self, weave_id)
107
w = read_weave(self._get(file_id), prelude=True)
108
transaction.map.add_weave(weave_id, w)
109
transaction.register_clean(w, precious=self._precious)
85
112
def get_lines(self, file_id, rev_id, transaction):
89
116
w = self.get_weave(file_id, transaction)
90
117
return w.get(w.lookup(rev_id))
119
def get_weave_prelude_or_empty(self, file_id, transaction):
120
"""cheap version that reads the prelude but not the lines
123
return self.get_weave_prelude(file_id, transaction)
125
# We can cache here, because we know that there
126
# is no complete object, since we got NoSuchFile
127
weave = Weave(weave_name=file_id)
128
transaction.map.add_weave(file_id, weave)
129
transaction.register_clean(weave, precious=self._precious)
92
132
def get_weave_or_empty(self, file_id, transaction):
93
133
"""Return a weave, or an empty one if it doesn't exist."""