/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to breezy/fetch_ghosts.py

  • Committer: Jelmer Vernooij
  • Date: 2017-06-02 22:47:22 UTC
  • mto: This revision was merged to the branch mainline in revision 6654.
  • Revision ID: jelmer@jelmer.uk-20170602224722-bxi5cs29o0swu8v6
Bundle the fetch-ghosts command as hidden command.

Show diffs side-by-side

added added

removed removed

Lines of Context:
breezy/fetch_ghosts.py
 
1
# Copyright (C) 2005 by Aaron Bentley
 
2
 
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
 
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
 
 
13
# You should have received a copy of the GNU General Public License
 
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
 
16
 
 
17
from .branch import Branch
 
18
from .trace import note
 
19
from .errors import NoSuchRevision, BzrCommandError
 
20
 
 
21
 
 
22
class GhostFetcher(object):
 
23
 
 
24
    @classmethod
 
25
    def from_cmdline(klass, other):
 
26
        this_branch = Branch.open_containing('.')[0]
 
27
        if other is None:
 
28
            other = this_branch.get_parent()
 
29
            if other is None:
 
30
                raise BzrCommandError('No branch specified and no location'
 
31
                                      ' saved.')
 
32
            else:
 
33
                note("Using saved location %s.", other)
 
34
        other_branch = Branch.open_containing(other)[0]
 
35
        return klass(this_branch, other_branch)
 
36
 
 
37
    def __init__(self, this_branch, other_branch):
 
38
        self.this_branch = this_branch
 
39
        self.other_branch = other_branch
 
40
 
 
41
    def run(self):
 
42
        lock_other = self.this_branch.base != self.other_branch.base
 
43
        self.this_branch.lock_write()
 
44
        try:
 
45
            if lock_other:
 
46
                self.other_branch.lock_read()
 
47
            try:
 
48
                return self._run_locked()
 
49
            finally:
 
50
                if lock_other:
 
51
                    self.other_branch.unlock()
 
52
        finally:
 
53
            self.this_branch.unlock()
 
54
 
 
55
    def iter_ghosts(self):
 
56
        """Find all ancestors that aren't stored in this branch."""
 
57
        seen = set()
 
58
        lines = [self.this_branch.last_revision()]
 
59
        if lines[0] is None:
 
60
            return
 
61
        while len(lines) > 0:
 
62
            new_lines = []
 
63
            for line in lines:
 
64
                if line in seen:
 
65
                    continue
 
66
                seen.add(line)
 
67
                try:
 
68
                    revision = self.this_branch.repository.get_revision(line)
 
69
                    new_lines.extend(revision.parent_ids)
 
70
                except NoSuchRevision:
 
71
                    yield line
 
72
            lines = new_lines
 
73
 
 
74
    def _run_locked(self):
 
75
        installed = []
 
76
        failed = []
 
77
        if self.this_branch.last_revision() is None:
 
78
            print("No revisions in branch.")
 
79
            return
 
80
        # Because iter_ghosts tests for existence after our last fetch
 
81
        # is complete, it won't falsely report an ancestor as a ghost.
 
82
        # Yay iterators!
 
83
        ghosts = self.iter_ghosts()
 
84
        for revision in ghosts:
 
85
            try:
 
86
                self.this_branch.fetch(self.other_branch, revision)
 
87
                installed.append(revision)
 
88
            except NoSuchRevision:
 
89
                failed.append(revision)
 
90
        return installed, failed
 
91
 
 
92
 
 
93
def fetch_ghosts(branch, do_reconcile):
 
94
    """Install ghosts from copies in another branch."""
 
95
    installed, failed = GhostFetcher.from_cmdline(branch).run()
 
96
    if len(installed) > 0:
 
97
        print("Installed:")
 
98
        for rev in installed:
 
99
            print rev
 
100
    if len(failed) > 0:
 
101
        print("Still missing:")
 
102
        for rev in failed:
 
103
            print(rev)
 
104
    if do_reconcile and len(installed) > 0:
 
105
        from .builtins import cmd_reconcile
 
106
        cmd_reconcile().run(".")