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Viewing changes to olive/backend/init.py

  • Committer: Jelmer Vernooij
  • Date: 2008-06-29 16:24:24 UTC
  • mto: This revision was merged to the branch mainline in revision 519.
  • Revision ID: jelmer@samba.org-20080629162424-48a6rrjmmpejfcyr
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# Copyright (C) 2006 by Szilveszter Farkas (Phanatic) <szilveszter.farkas@gmail.com>
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# Some parts of the code are:
3
 
# Copyright (C) 2005, 2006 by Canonical Ltd
4
 
 
5
 
# This program is free software; you can redistribute it and/or modify
6
 
# it under the terms of the GNU General Public License as published by
7
 
# the Free Software Foundation; either version 2 of the License, or
8
 
# (at your option) any later version.
9
 
 
10
 
# This program is distributed in the hope that it will be useful,
11
 
# but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13
 
# GNU General Public License for more details.
14
 
 
15
 
# You should have received a copy of the GNU General Public License
16
 
# along with this program; if not, write to the Free Software
17
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 
 
19
 
import errno
20
 
import os
21
 
 
22
 
import bzrlib
23
 
import bzrlib.bzrdir as bzrdir
24
 
import bzrlib.errors as errors
25
 
 
26
 
from bzrlib.branch import Branch
27
 
 
28
 
from errors import (AlreadyBranchError, BranchExistsWithoutWorkingTree,
29
 
                    NonExistingParent, NonExistingRevision,
30
 
                    NonExistingSource, NotBranchError, TargetAlreadyExists)
31
 
 
32
 
def init(location):
33
 
    """ Initialize a directory.
34
 
    
35
 
    :param location: full path to the directory you want to be versioned
36
 
    """
37
 
    from bzrlib.builtins import get_format_type
38
 
 
39
 
    format = get_format_type('default')
40
 
 
41
 
    if not os.path.exists(location):
42
 
        os.mkdir(location)
43
 
 
44
 
    try:
45
 
        existing_bzrdir = bzrdir.BzrDir.open(location)
46
 
    except errors.NotBranchError:
47
 
        bzrdir.BzrDir.create_branch_convenience(location, format=format)
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    else:
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        if existing_bzrdir.has_branch():
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            if existing_bzrdir.has_workingtree():
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                raise AlreadyBranchError(location)
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            else:
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                raise BranchExistsWithoutWorkingTree(location)
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        else:
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            existing_bzrdir.create_branch()
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            existing_bzrdir.create_workingtree()
57
 
 
58
 
def branch(from_location, to_location, revision=None):
59
 
    """ Create a branch from a local/remote location.
60
 
    
61
 
    :param from_location: the original location of the branch
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63
 
    :param to_location: the directory where the branch should be created
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65
 
    :param revision: if specified, the given revision will be branched
66
 
    
67
 
    :return: number of revisions branched
68
 
    """
69
 
    from bzrlib.transport import get_transport
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    try:
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        br_from = Branch.open(from_location)
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    except OSError, e:
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        if e.errno == errno.ENOENT:
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            raise NonExistingSource(from_location)
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        else:
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            raise
78
 
    except errors.NotBranchError:
79
 
        raise NotBranchError(from_location)
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81
 
    br_from.lock_read()
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83
 
    try:
84
 
        basis_dir = None
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        if revision is not None:
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            revision_id = br_from.get_rev_id(revision)
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        else:
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            revision_id = None
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90
 
        to_location = to_location + '/' + os.path.basename(from_location.rstrip("/\\"))
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        name = None
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        to_transport = get_transport(to_location)
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94
 
        try:
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            to_transport.mkdir('.')
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        except errors.FileExists:
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            raise TargetAlreadyExists(to_location)
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        except errors.NoSuchFile:
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            raise NonExistingParent(to_location)
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        try:
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            dir = br_from.bzrdir.sprout(to_transport.base, revision_id, basis_dir)
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            branch = dir.open_branch()
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        except errors.NoSuchRevision:
105
 
            to_transport.delete_tree('.')
106
 
            raise NonExistingRevision(from_location, revision[0])
107
 
 
108
 
        if name:
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            branch.control_files.put_utf8('branch-name', name)
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    finally:
111
 
        br_from.unlock()
112
 
        
113
 
    return branch.revno()
114
 
 
115
 
def checkout(branch_location, to_location, revision=None, lightweight=False):
116
 
    """ Create a new checkout of an existing branch.
117
 
    
118
 
    :param branch_location: the location of the branch you'd like to checkout
119
 
    
120
 
    :param to_location: the directory where the checkout should be created
121
 
    
122
 
    :param revision: the given revision will be checkout'ed (be aware!)
123
 
    
124
 
    :param lightweight: perform a lightweight checkout (be aware!)
125
 
    """
126
 
    try:
127
 
        source = Branch.open(branch_location)
128
 
    except errors.NotBranchError:
129
 
        raise NotBranchError(branch_location)
130
 
    
131
 
    if revision is not None:
132
 
        revision_id = source.get_rev_id(revision)
133
 
    else:
134
 
        revision_id = None
135
 
 
136
 
    # if the source and to_location are the same, 
137
 
    # and there is no working tree,
138
 
    # then reconstitute a branch
139
 
    if (bzrlib.osutils.abspath(to_location) ==
140
 
        bzrlib.osutils.abspath(branch_location)):
141
 
        try:
142
 
            source.bzrdir.open_workingtree()
143
 
        except errors.NoWorkingTree:
144
 
            source.bzrdir.create_workingtree()
145
 
            return
146
 
 
147
 
    to_location = to_location + '/' + os.path.basename(branch_location.rstrip("/\\"))
148
 
    
149
 
    try:
150
 
        os.mkdir(to_location)
151
 
    except OSError, e:
152
 
        if e.errno == errno.EEXIST:
153
 
            raise TargetAlreadyExists(to_location)
154
 
        if e.errno == errno.ENOENT:
155
 
            raise NonExistingParent(to_location)
156
 
        else:
157
 
            raise
158
 
 
159
 
    old_format = bzrlib.bzrdir.BzrDirFormat.get_default_format()
160
 
    bzrlib.bzrdir.BzrDirFormat.set_default_format(bzrdir.BzrDirMetaFormat1())
161
 
 
162
 
    try:
163
 
        if lightweight:
164
 
            checkout = bzrdir.BzrDirMetaFormat1().initialize(to_location)
165
 
            bzrlib.branch.BranchReferenceFormat().initialize(checkout, source)
166
 
        else:
167
 
            checkout_branch = bzrlib.bzrdir.BzrDir.create_branch_convenience(
168
 
                to_location, force_new_tree=False)
169
 
            checkout = checkout_branch.bzrdir
170
 
            checkout_branch.bind(source)
171
 
            if revision_id is not None:
172
 
                rh = checkout_branch.revision_history()
173
 
                checkout_branch.set_revision_history(rh[:rh.index(revision_id) + 1])
174
 
 
175
 
        checkout.create_workingtree(revision_id)
176
 
    finally:
177
 
        bzrlib.bzrdir.BzrDirFormat.set_default_format(old_format)