13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from bzrlib.bundle.serializer import read_bundle
18
import bzrlib.errors as errors
19
import bzrlib.urlutils
20
import bzrlib.transport
23
def read_bundle_from_url(url):
24
"""Read a bundle from a given URL.
26
:return: A BundleReader, may raise NotABundle if the target
27
is not a proper bundle.
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
from __future__ import absolute_import
19
from cStringIO import StringIO
21
from bzrlib.lazy_import import lazy_import
22
lazy_import(globals(), """
25
transport as _mod_transport,
28
from bzrlib.bundle import serializer as _serializer
29
from bzrlib.merge_directive import MergeDirective
30
from bzrlib.i18n import gettext
32
from bzrlib.trace import note
35
def read_mergeable_from_url(url, _do_directive=True, possible_transports=None):
36
"""Read mergable object from a given URL.
38
:return: An object supporting get_target_revision. Raises NotABundle if
39
the target is not a mergeable type.
29
url, filename = bzrlib.urlutils.split(url, exclude_trailing_slash=False)
31
# A path to a directory was passed in
32
# definitely not a bundle
33
raise errors.NotABundle('A directory cannot be a bundle')
35
# All of this must be in the try/except
36
# Some transports cannot detect that we are trying to read a
37
# directory until we actually issue read() on the handle.
41
child_transport = _mod_transport.get_transport(url,
42
possible_transports=possible_transports)
43
transport = child_transport.clone('..')
44
filename = transport.relpath(child_transport.base)
45
mergeable, transport = read_mergeable_from_transport(transport, filename,
50
def read_mergeable_from_transport(transport, filename, _do_directive=True):
51
def get_bundle(transport):
52
return StringIO(transport.get_bytes(filename)), transport
54
def redirected_transport(transport, exception, redirection_notice):
55
note(redirection_notice)
56
url, filename = urlutils.split(exception.target,
57
exclude_trailing_slash=False)
59
raise errors.NotABundle(gettext('A directory cannot be a bundle'))
60
return _mod_transport.get_transport_from_url(url)
39
t = bzrlib.transport.get_transport(url)
63
bytef, transport = _mod_transport.do_catching_redirections(
64
get_bundle, transport, redirected_transport)
65
except errors.TooManyRedirections:
66
raise errors.NotABundle(transport.clone(filename).base)
67
except (errors.ConnectionReset, errors.ConnectionError), e:
42
69
except (errors.TransportError, errors.PathError), e:
43
70
raise errors.NotABundle(str(e))
44
71
except (IOError,), e:
47
74
# doesn't always fail at get() time. Sometimes it fails
48
75
# during read. And that raises a generic IOError with
49
76
# just the string 'Failure'
50
# StubSFTPServer does fail during get() (because of prefetch)
77
# StubSFTPServer does fail during get() (because of prefetch)
51
78
# so it has an opportunity to translate the error.
52
79
raise errors.NotABundle(str(e))
83
return MergeDirective.from_lines(bytef), transport
84
except errors.NotAMergeDirective:
87
return _serializer.read_bundle(bytef), transport