← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/bundle/__init__.py

  • Committer: Ian Clatworthy
  • Date: 2007-08-13 14:33:10 UTC
  • mto: (2733.1.1 ianc-integration)
  • mto: This revision was merged to the branch mainline in revision 2734.
  • Revision ID: ian.clatworthy@internode.on.net-20070813143310-twhj4la0qnupvze8
Added Quick Start Summary

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/bundle/__init__.py
1
 
# Copyright (C) 2005-2010 Canonical Ltd
 
1
# Copyright (C) 2005, 2006 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
17
 
from cStringIO import StringIO
 
17
from StringIO import StringIO
18
18
 
19
19
from bzrlib.lazy_import import lazy_import
20
20
lazy_import(globals(), """
23
23
    urlutils,
24
24
    )
25
25
from bzrlib.bundle import serializer as _serializer
26
 
from bzrlib.merge_directive import MergeDirective
27
26
from bzrlib.transport import (
28
27
    do_catching_redirections,
29
28
    get_transport,
32
31
from bzrlib.trace import note
33
32
 
34
33
 
35
 
def read_mergeable_from_url(url, _do_directive=True, possible_transports=None):
 
34
def read_bundle_from_url(url):
 
35
    return read_mergeable_from_url(url, _do_directive=False)
 
36
 
 
37
 
 
38
def read_mergeable_from_url(url, _do_directive=True):
36
39
    """Read mergable object from a given URL.
37
40
 
38
41
    :return: An object supporting get_target_revision.  Raises NotABundle if
39
42
        the target is not a mergeable type.
40
43
    """
41
 
    child_transport = get_transport(url,
42
 
        possible_transports=possible_transports)
43
 
    transport = child_transport.clone('..')
44
 
    filename = transport.relpath(child_transport.base)
 
44
    url = urlutils.normalize_url(url)
 
45
    url, filename = urlutils.split(url, exclude_trailing_slash=False)
 
46
    if not filename:
 
47
        # A path to a directory was passed in
 
48
        # definitely not a bundle
 
49
        raise errors.NotABundle('A directory cannot be a bundle')
 
50
 
 
51
    transport = get_transport(url)
45
52
    mergeable, transport = read_mergeable_from_transport(transport, filename,
46
53
                                                         _do_directive)
47
54
    return mergeable
48
55
 
49
56
 
50
57
def read_mergeable_from_transport(transport, filename, _do_directive=True):
51
 
    def get_bundle(transport):
52
 
        return StringIO(transport.get_bytes(filename)), transport
53
 
 
54
 
    def redirected_transport(transport, exception, redirection_notice):
55
 
        note(redirection_notice)
56
 
        url, filename = urlutils.split(exception.target,
57
 
                                       exclude_trailing_slash=False)
58
 
        if not filename:
59
 
            raise errors.NotABundle('A directory cannot be a bundle')
60
 
        return get_transport(url)
61
 
 
 
58
    # All of this must be in the try/except
 
59
    # Some transports cannot detect that we are trying to read a
 
60
    # directory until we actually issue read() on the handle.
62
61
    try:
63
 
        bytef, transport = do_catching_redirections(get_bundle, transport,
 
62
        def get_bundle(transport):
 
63
            return transport.get(filename), transport
 
64
 
 
65
        def redirected_transport(transport, exception, redirection_notice):
 
66
            note(redirection_notice)
 
67
            url, filename = urlutils.split(exception.target,
 
68
                                           exclude_trailing_slash=False)
 
69
            if not filename:
 
70
                raise errors.NotABundle('A directory cannot be a bundle')
 
71
            return get_transport(url)
 
72
 
 
73
        try:
 
74
            f, transport = do_catching_redirections(get_bundle, transport,
64
75
                                                    redirected_transport)
65
 
    except errors.TooManyRedirections:
66
 
        raise errors.NotABundle(transport.clone(filename).base)
67
 
    except (errors.ConnectionReset, errors.ConnectionError), e:
68
 
        raise
 
76
        except errors.TooManyRedirections:
 
77
            raise errors.NotABundle(str(url))
 
78
 
 
79
        if _do_directive:
 
80
            from bzrlib.merge_directive import MergeDirective
 
81
            directive = MergeDirective.from_lines(f.readlines())
 
82
            return directive, transport
 
83
        else:
 
84
            return _serializer.read_bundle(f), transport
69
85
    except (errors.TransportError, errors.PathError), e:
70
86
        raise errors.NotABundle(str(e))
71
87
    except (IOError,), e:
74
90
        # doesn't always fail at get() time. Sometimes it fails
75
91
        # during read. And that raises a generic IOError with
76
92
        # just the string 'Failure'
77
 
        # StubSFTPServer does fail during get() (because of prefetch)
 
93
        # StubSFTPServer does fail during get() (because of prefetch) 
78
94
        # so it has an opportunity to translate the error.
79
95
        raise errors.NotABundle(str(e))
80
 
 
81
 
    if _do_directive:
82
 
        try:
83
 
            return MergeDirective.from_lines(bytef), transport
84
 
        except errors.NotAMergeDirective:
85
 
            bytef.seek(0)
86
 
 
87
 
    return _serializer.read_bundle(bytef), transport
 
96
    except errors.NotAMergeDirective:
 
97
        f.seek(0)
 
98
        return _serializer.read_bundle(f), transport