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Viewing changes to olive/backend/init.py

  • Committer: Jelmer Vernooij
  • Date: 2008-06-28 20:24:16 UTC
  • mto: This revision was merged to the branch mainline in revision 517.
  • Revision ID: jelmer@samba.org-20080628202416-pvt4hkck3gqndine
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olive/backend/init.py
1
 
# Copyright (C) 2006 by Szilveszter Farkas (Phanatic) <szilveszter.farkas@gmail.com>
2
 
# Some parts of the code are:
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# 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
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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)
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44
 
    try:
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        existing_bzrdir = bzrdir.BzrDir.open(location)
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    except errors.NotBranchError:
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        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()
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58
 
def branch(from_location, to_location, revision=None):
59
 
    """ Create a branch from a local/remote location.
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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
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67
 
    :return: number of revisions branched
68
 
    """
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    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
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    except errors.NotBranchError:
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        raise NotBranchError(from_location)
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81
 
    br_from.lock_read()
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83
 
    try:
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        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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        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:
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            to_transport.delete_tree('.')
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            raise NonExistingRevision(from_location, revision[0])
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108
 
        if name:
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            branch.control_files.put_utf8('branch-name', name)
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    finally:
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        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
 
    source = Branch.open(branch_location)
127
 
    
128
 
    if revision is not None:
129
 
        revision_id = source.get_rev_id(revision)
130
 
    else:
131
 
        revision_id = None
132
 
 
133
 
    # if the source and to_location are the same, 
134
 
    # and there is no working tree,
135
 
    # then reconstitute a branch
136
 
    if (bzrlib.osutils.abspath(to_location) ==
137
 
        bzrlib.osutils.abspath(branch_location)):
138
 
        try:
139
 
            source.bzrdir.open_workingtree()
140
 
        except errors.NoWorkingTree:
141
 
            source.bzrdir.create_workingtree()
142
 
            return
143
 
 
144
 
    try:
145
 
        os.mkdir(to_location)
146
 
    except OSError, e:
147
 
        if e.errno == errno.EEXIST:
148
 
            raise TargetAlreadyExists(to_location)
149
 
        if e.errno == errno.ENOENT:
150
 
            raise NonExistingParent(to_location)
151
 
        else:
152
 
            raise
153
 
 
154
 
    old_format = bzrlib.bzrdir.BzrDirFormat.get_default_format()
155
 
    bzrlib.bzrdir.BzrDirFormat.set_default_format(bzrdir.BzrDirMetaFormat1())
156
 
 
157
 
    try:
158
 
        if lightweight:
159
 
            checkout = bzrdir.BzrDirMetaFormat1().initialize(to_location)
160
 
            bzrlib.branch.BranchReferenceFormat().initialize(checkout, source)
161
 
        else:
162
 
            checkout_branch = bzrlib.bzrdir.BzrDir.create_branch_convenience(
163
 
                to_location, force_new_tree=False)
164
 
            checkout = checkout_branch.bzrdir
165
 
            checkout_branch.bind(source)
166
 
            if revision_id is not None:
167
 
                rh = checkout_branch.revision_history()
168
 
                checkout_branch.set_revision_history(rh[:rh.index(revision_id) + 1])
169
 
 
170
 
        checkout.create_workingtree(revision_id)
171
 
    finally:
172
 
        bzrlib.bzrdir.BzrDirFormat.set_default_format(old_format)