/brz/remove-bazaar

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  • Committer: Robert Collins
  • Date: 2010-05-06 07:48:22 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506074822-0bsgf2j4h8jx0xkk
Added ``bzrlib.tests.matchers`` as a place to put matchers, along with
our first in-tree matcher. See the module docstring for details.
(Robert Collins)

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refs.py
1
 
# Copyright (C) 2010 Jelmer Vernooij <jelmer@samba.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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"""Conversion between refs and Bazaar revision pointers."""
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from dulwich.repo import (
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    RefsContainer,
21
 
    )
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from bzrlib import (
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    errors,
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    )
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27
 
 
28
 
def extract_tags(refs):
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    """Extract the tags from a refs dictionary.
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31
 
    :param refs: Refs to extract the tags from.
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    :return: Dictionary mapping tag names to SHA1s.
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    """
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    ret = {}
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    for k,v in refs.iteritems():
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        if k.startswith("refs/tags/") and not k.endswith("^{}"):
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            v = refs.get(k+"^{}", v)
38
 
            ret[k[len("refs/tags/"):]] = v
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    return ret
40
 
 
41
 
 
42
 
def branch_name_to_ref(name, default=None):
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    """Map a branch name to a ref.
44
 
 
45
 
    :param name: Branch name
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    :return: ref string
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    """
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    if name is None:
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        return default
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    if name == "HEAD":
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        return "HEAD"
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    if not name.startswith("refs/"):
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        return "refs/heads/%s" % name
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    else:
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        return name
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57
 
 
58
 
def ref_to_branch_name(ref):
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    """Map a ref to a branch name
60
 
 
61
 
    :param ref: Ref
62
 
    :return: A branch name
63
 
    """
64
 
    if ref == "HEAD":
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        return "HEAD"
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    if ref.startswith("refs/heads/"):
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        return ref[len("refs/heads/"):]
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    raise ValueError("unable to map ref %s back to branch name")
69
 
 
70
 
 
71
 
 
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class BazaarRefsContainer(RefsContainer):
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74
 
    def __init__(self, dir, object_store):
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        self.dir = dir
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        self.object_store = object_store
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78
 
    def set_symbolic_ref(self, name, other):
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        if name == "HEAD":
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            pass # FIXME: Switch default branch
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        else:
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            raise NotImplementedError(
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                "Symbolic references not supported for anything other than "
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                "HEAD")
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    def read_loose_ref(self, ref):
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        branch_name = ref_to_branch_name(ref)
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        try:
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            branch = self.dir.open_branch(branch_name)
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        except errors.NoColocatedBranchSupport:
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            if ref != "refs/heads/master":
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                raise
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            branch = self.dir.open_branch()
94
 
        return self.object_store._lookup_revision_sha1(
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            branch.last_revision())
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97
 
    def allkeys(self):
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        keys = set()
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        for branch in self.dir.list_branches():
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            ref = branch_name_to_ref(branch.name, "refs/heads/master")
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            keys.add(ref)
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        return keys
103
 
 
104
 
    def __delitem__(self, ref):
105
 
        try:
106
 
            branch_name = ref_to_branch_name(ref)
107
 
        except ValueError:
108
 
            return # FIXME: Cope with tags!
109
 
        self.dir.destroy_branch(branch_name)
110
 
 
111
 
    def __setitem__(self, ref, sha):
112
 
        try:
113
 
            branch_name = ref_to_branch_name(ref)
114
 
        except ValueError:
115
 
            # FIXME: Cope with tags!
116
 
            return
117
 
        try:
118
 
            target_branch = self.repo_dir.open_branch(branch_name)
119
 
        except errors.NotBranchError:
120
 
            target_branch = self.repo.create_branch(branch_name)
121
 
 
122
 
        rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
123
 
        target_branch.lock_write()
124
 
        try:
125
 
            target_branch.generate_revision_history(rev_id)
126
 
        finally:
127
 
            target_branch.unlock()