/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 refs.py

Move refs code to separate module.

Show diffs side-by-side

added added

removed removed

Lines of Context:
refs.py
16
16
 
17
17
"""Conversion between refs and Bazaar revision pointers."""
18
18
 
19
 
from dulwich.repo import (
20
 
    RefsContainer,
21
 
    )
22
 
 
23
 
from bzrlib import (
24
 
    errors,
25
 
    )
26
 
 
27
 
 
28
19
def extract_tags(refs):
29
20
    """Extract the tags from a refs dictionary.
30
21
 
35
26
    for k,v in refs.iteritems():
36
27
        if k.startswith("refs/tags/") and not k.endswith("^{}"):
37
28
            v = refs.get(k+"^{}", v)
38
 
            try:
39
 
                tagname = ref_to_tag_name(k)
40
 
            except UnicodeDecodeError:
41
 
                pass
42
 
            else:
43
 
                ret[tagname] = v
 
29
            ret[k[len("refs/tags/"):]] = v
44
30
    return ret
45
31
 
46
32
 
53
39
    if name is None:
54
40
        return default
55
41
    if name == "HEAD":
56
 
        return name
 
42
        return "HEAD"
57
43
    if not name.startswith("refs/"):
58
44
        return "refs/heads/%s" % name
59
45
    else:
60
46
        return name
61
47
 
62
48
 
63
 
def tag_name_to_ref(name):
64
 
    """Map a tag name to a ref.
65
 
 
66
 
    :param name: Tag name
67
 
    :return: ref string
68
 
    """
69
 
    return "refs/tags/%s" % name
70
 
 
71
 
 
72
49
def ref_to_branch_name(ref):
73
50
    """Map a ref to a branch name
74
51
 
75
52
    :param ref: Ref
76
53
    :return: A branch name
77
54
    """
78
 
    if ref in (None, "HEAD"):
79
 
        return ref
 
55
    if ref == "HEAD":
 
56
        return "HEAD"
80
57
    if ref.startswith("refs/heads/"):
81
58
        return ref[len("refs/heads/"):]
82
 
    raise ValueError("unable to map ref %s back to branch name" % ref)
83
 
 
84
 
 
85
 
def ref_to_tag_name(ref):
86
 
    if ref.startswith("refs/tags/"):
87
 
        return ref[len('refs/tags/'):].decode("utf-8")
88
 
    raise ValueError("unable to map ref %s back to branch name" % ref)
89
 
 
90
 
 
91
 
class BazaarRefsContainer(RefsContainer):
92
 
 
93
 
    def __init__(self, dir, object_store):
94
 
        self.dir = dir
95
 
        self.object_store = object_store
96
 
 
97
 
    def set_symbolic_ref(self, name, other):
98
 
        if name == "HEAD":
99
 
            pass # FIXME: Switch default branch
100
 
        else:
101
 
            raise NotImplementedError(
102
 
                "Symbolic references not supported for anything other than "
103
 
                "HEAD")
104
 
 
105
 
    def _get_revid_by_tag_name(self, tag_name):
106
 
        for branch in self.dir.list_branches():
107
 
            try:
108
 
                # FIXME: This is ambiguous!
109
 
                return branch.tags.lookup_tag(tag_name)
110
 
            except errors.NoSuchTag:
111
 
                pass
112
 
        return None
113
 
 
114
 
    def _get_revid_by_branch_name(self, branch_name):
115
 
        try:
116
 
            branch = self.dir.open_branch(branch_name)
117
 
        except errors.NoColocatedBranchSupport:
118
 
            if branch_name in ("HEAD", "master"):
119
 
                branch = self.dir.open_branch()
120
 
            else:
121
 
                raise
122
 
        return branch.last_revision()
123
 
 
124
 
    def read_loose_ref(self, ref):
125
 
        try:
126
 
            branch_name = ref_to_branch_name(ref)
127
 
        except ValueError:
128
 
            tag_name = ref_to_tag_name(ref)
129
 
            revid = self._get_revid_by_tag_name(tag_name)
130
 
        else:
131
 
            revid = self._get_revid_by_branch_name(branch_name)
132
 
        return self.object_store._lookup_revision_sha1(revid)
133
 
 
134
 
    def allkeys(self):
135
 
        keys = set()
136
 
        for branch in self.dir.list_branches():
137
 
            repo = branch.repository
138
 
            if repo.has_revision(branch.last_revision()):
139
 
                ref = branch_name_to_ref(branch.name, "refs/heads/master")
140
 
                keys.add(ref)
141
 
                if branch.name is None:
142
 
                    keys.add("HEAD")
143
 
            for tag_name, revid in branch.tags.get_tag_dict().iteritems():
144
 
                if repo.has_revision(revid):
145
 
                    keys.add(tag_name_to_ref(tag_name))
146
 
        return keys
147
 
 
148
 
    def __delitem__(self, ref):
149
 
        try:
150
 
            branch_name = ref_to_branch_name(ref)
151
 
        except ValueError:
152
 
            return # FIXME: Cope with tags!
153
 
        self.dir.destroy_branch(branch_name)
154
 
 
155
 
    def __setitem__(self, ref, sha):
156
 
        try:
157
 
            branch_name = ref_to_branch_name(ref)
158
 
        except ValueError:
159
 
            # FIXME: Cope with tags!
160
 
            return
161
 
        try:
162
 
            target_branch = self.repo_dir.open_branch(branch_name)
163
 
        except errors.NotBranchError:
164
 
            target_branch = self.repo.create_branch(branch_name)
165
 
 
166
 
        rev_id = self.mapping.revision_id_foreign_to_bzr(sha)
167
 
        target_branch.lock_write()
168
 
        try:
169
 
            target_branch.generate_revision_history(rev_id)
170
 
        finally:
171
 
            target_branch.unlock()
 
59
    raise ValueError("unable to map ref %s back to branch name")
 
60
 
 
61