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  • Committer: Robert Collins
  • Date: 2008-01-06 20:04:22 UTC
  • mto: (3221.11.1 StackableBranch)
  • mto: This revision was merged to the branch mainline in revision 3226.
  • Revision ID: robertc@robertcollins.net-20080106200422-x8yz6cxotlzltvwp
The bzrdir format registry now accepts an ``alias`` keyword to
register_metadir, used to indicate that a format name is an alias for
some other format and thus should not be reported when describing the
format. (Robert Collins)
-------------- This line and the fmllowing will be ignored --------------

modified:
  NEWS
  bzrlib/bzrdir.py
  bzrlib/info.py
  bzrlib/tests/test_bzrdir.py
  bzrlib/tests/test_info.py

=== modified file 'NEWS'
--- a/NEWS      2008-01-02 22:30:46 +0000
+++ b/NEWS      2008-01-06 20:04:15 +0000
@@ -135,6 +135,11 @@
     * Patience Diff now supports arbitrary python objects, as long as they
       support ``hash()``. (John Arbash Meinel)
 
+    * The bzrdir format registry now accepts an ``alias`` keyword to
+      register_metadir, used to indicate that a format name is an alias for
+      some other format and thus should not be reported when describing the
+      format. (Robert Collins)
+
   API BREAKS:
 
   TESTING:

=== modified file 'bzrlib/bzrdir.py'
--- a/bzrlib/bzrdir.py  2008-01-02 22:30:46 +0000
+++ b/bzrlib/bzrdir.py  2008-01-06 19:41:29 +0000
@@ -2447,12 +2447,22 @@
     e.g. BzrDirMeta1 with weave repository.  Also, it's more user-oriented.
     """
 
+    def __init__(self):
+        """Create a BzrDirFormatRegistry."""
+        self._aliases = set()
+        super(BzrDirFormatRegistry, self).__init__()
+
+    def aliases(self):
+        """Return a set of the format names which are aliases."""
+        return frozenset(self._aliases)
+
     def register_metadir(self, key,
              repository_format, help, native=True, deprecated=False,
              branch_format=None,
              tree_format=None,
              hidden=False,
-             experimental=False):
+             experimental=False,
+             alias=False):
         """Register a metadir subformat.
 
         These all use a BzrDirMetaFormat1 bzrdir, but can be parameterized
@@ -2491,10 +2501,10 @@
                 bd.repository_format = _load(repository_format)
             return bd
         self.register(key, helper, help, native, deprecated, hidden,
-            experimental)
+            experimental, alias)
 
     def register(self, key, factory, help, native=True, deprecated=False,
-                 hidden=False, experimental=False):
+                 hidden=False, experimental=False, alias=False):
         """Register a BzrDirFormat factory.
         
         The factory must be a callable that takes one parameter: the key.
@@ -2505,11 +2515,15 @@
         """
         registry.Registry.register(self, key, factory, help,
             BzrDirFormatInfo(native, deprecated, hidden, experimental))
+        if alias:
+            self._aliases.add(key)
 
     def register_lazy(self, key, module_name, member_name, help, native=True,
-                      deprecated=False, hidden=False, experimental=False):
+        deprecated=False, hidden=False, experimental=False, alias=False):
         registry.Registry.register_lazy(self, key, module_name, member_name,
             help, BzrDirFormatInfo(native, deprecated, hidden, experimental))
+        if alias:
+            self._aliases.add(key)
 
     def set_default(self, key):
         """Set the 'default' key to be a clone of the supplied key.
@@ -2518,6 +2532,7 @@
         """
         registry.Registry.register(self, 'default', self.get(key),
             self.get_help(key), info=self.get_info(key))
+        self._aliases.add('default')
 
     def set_default_repository(self, key):
         """Set the FormatRegistry default and Repository default.
@@ -2670,6 +2685,7 @@
     tree_format='bzrlib.workingtree.WorkingTreeFormat4',
     hidden=False,
     )
+# The following two formats should always just be aliases.
 format_registry.register_metadir('development',
     'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment0',
     help='Current development format. Can convert data to and from pack-0.92 '
@@ -2681,6 +2697,7 @@
     branch_format='bzrlib.branch.BzrBranchFormat6',
     tree_format='bzrlib.workingtree.WorkingTreeFormat4',
     experimental=True,
+    alias=True,
     )
 format_registry.register_metadir('development-subtree',
     'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment0Subtree',
@@ -2693,7 +2710,9 @@
     branch_format='bzrlib.branch.BzrBranchFormat6',
     tree_format='bzrlib.workingtree.WorkingTreeFormat4',
     experimental=True,
+    alias=True,
     )
+# And the development formats which the will have aliased one of follow:
 format_registry.register_metadir('development0',
     'bzrlib.repofmt.pack_repo.RepositoryFormatPackDevelopment0',
     help='Trivial rename of pack-0.92 to provide a development format. '

=== modified file 'bzrlib/info.py'
--- a/bzrlib/info.py    2007-11-06 09:00:25 +0000
+++ b/bzrlib/info.py    2008-01-06 20:01:30 +0000
@@ -440,7 +440,9 @@
         tree.bzrdir.root_transport.base):
         branch = None
         repository = None
-    for key in bzrdir.format_registry.keys():
+    non_aliases = set(bzrdir.format_registry.keys())
+    non_aliases.difference_update(bzrdir.format_registry.aliases())
+    for key in non_aliases:
         format = bzrdir.format_registry.make_bzrdir(key)
         if isinstance(format, bzrdir.BzrDirMetaFormat1):
             if (tree and format.workingtree_format !=
@@ -457,11 +459,12 @@
         candidates.append(key)
     if len(candidates) == 0:
         return 'unnamed'
-    new_candidates = [c for c in candidates if c != 'default']
-    if len(new_candidates) > 0:
-        candidates = new_candidates
+    candidates.sort()
     new_candidates = [c for c in candidates if not
         bzrdir.format_registry.get_info(c).hidden]
     if len(new_candidates) > 0:
+        # If there are any non-hidden formats that match, only return those to
+        # avoid listing hidden formats except when only a hidden format will
+        # do.
         candidates = new_candidates
     return ' or '.join(candidates)

=== modified file 'bzrlib/tests/test_bzrdir.py'
--- a/bzrlib/tests/test_bzrdir.py       2007-12-21 20:32:22 +0000
+++ b/bzrlib/tests/test_bzrdir.py       2008-01-06 19:45:00 +0000
@@ -170,6 +170,16 @@
         finally:
             bzrdir.format_registry.set_default_repository(old_default)
 
+    def test_aliases(self):
+        a_registry = bzrdir.BzrDirFormatRegistry()
+        a_registry.register('weave', bzrdir.BzrDirFormat6,
+            'Pre-0.8 format.  Slower and does not support checkouts or shared'
+            ' repositories', deprecated=True)
+        a_registry.register('weavealias', bzrdir.BzrDirFormat6,
+            'Pre-0.8 format.  Slower and does not support checkouts or shared'
+            ' repositories', deprecated=True, alias=True)
+        self.assertEqual(frozenset(['weavealias']), a_registry.aliases())
+    
 
 class SampleBranch(bzrlib.branch.Branch):
     """A dummy branch for guess what, dummy use."""

=== modified file 'bzrlib/tests/test_info.py'
--- a/bzrlib/tests/test_info.py 2007-11-26 13:55:51 +0000
+++ b/bzrlib/tests/test_info.py 2008-01-06 20:02:10 +0000
@@ -126,16 +126,22 @@
 
     def test_describe_tree_format(self):
         for key in bzrdir.format_registry.keys():
-            if key == 'default':
+            if key in bzrdir.format_registry.aliases():
                 continue
             self.assertTreeDescription(key)
 
     def test_describe_checkout_format(self):
         for key in bzrdir.format_registry.keys():
-            if key in ('default', 'weave', 'experimental'):
-                continue
-            if key.startswith('experimental-'):
-                # these are typically hidden or aliases for other formats
+            if key in bzrdir.format_registry.aliases():
+                # Aliases will not describe correctly in the UI because the
+                # real format is found.
+                continue
+            # legacy: weave does not support checkouts
+            if key == 'weave':
+                continue
+            if bzrdir.format_registry.get_info(key).experimental:
+                # We don't require that experimental formats support checkouts
+                # or describe correctly in the UI.
                 continue
             expected = None
             if key in ('dirstate', 'dirstate-tags', 'dirstate-with-subtree',
@@ -149,7 +155,7 @@
 
     def test_describe_branch_format(self):
         for key in bzrdir.format_registry.keys():
-            if key == 'default':
+            if key in bzrdir.format_registry.aliases():
                 continue
             expected = None
             if key in ('dirstate', 'knit'):
@@ -158,7 +164,7 @@
 
     def test_describe_repo_format(self):
         for key in bzrdir.format_registry.keys():
-            if key == 'default':
+            if key in bzrdir.format_registry.aliases():
                 continue
             expected = None
             if key in ('dirstate', 'knit', 'dirstate-tags'):

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Lines of Context:
 
1
# Copyright (C) 2005, 2006 Canonical Ltd
 
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
"""Display what revisions are missing in 'other' from 'this' and vice versa."""
 
18
 
 
19
from bzrlib import ui
 
20
from bzrlib.log import (
 
21
    LogRevision,
 
22
    )
 
23
from bzrlib.symbol_versioning import (
 
24
    deprecated_function,
 
25
    zero_seventeen,
 
26
    )
 
27
 
 
28
 
 
29
@deprecated_function(zero_seventeen)
 
30
def iter_log_data(revisions, revision_source, verbose):
 
31
    for revision in iter_log_revisions(revisions, revision_source, verbose):
 
32
        yield revision.revno, revision.rev, revision.delta
 
33
 
 
34
 
 
35
def iter_log_revisions(revisions, revision_source, verbose):
 
36
    last_tree = revision_source.revision_tree(None)
 
37
    last_rev_id = None
 
38
    for revno, rev_id in revisions:
 
39
        rev = revision_source.get_revision(rev_id)
 
40
        if verbose:
 
41
            remote_tree = revision_source.revision_tree(rev_id)
 
42
            parent_rev_id = rev.parent_ids[0]
 
43
            if last_rev_id == parent_rev_id:
 
44
                parent_tree = last_tree
 
45
            else:
 
46
                parent_tree = revision_source.revision_tree(parent_rev_id)
 
47
            revision_tree = revision_source.revision_tree(rev_id)
 
48
            last_rev_id = rev_id
 
49
            last_tree = revision_tree
 
50
            delta = revision_tree.changes_from(parent_tree)
 
51
        else:
 
52
            delta = None
 
53
        yield LogRevision(rev, revno, delta=delta)
 
54
 
 
55
 
 
56
def find_unmerged(local_branch, remote_branch):
 
57
    progress = ui.ui_factory.nested_progress_bar()
 
58
    local_branch.lock_read()
 
59
    try:
 
60
        remote_branch.lock_read()
 
61
        try:
 
62
            local_rev_history, local_rev_history_map = \
 
63
                _get_history(local_branch, progress, "local", 0)
 
64
            remote_rev_history, remote_rev_history_map = \
 
65
                _get_history(remote_branch, progress, "remote", 1)
 
66
            result = _shortcut(local_rev_history, remote_rev_history)
 
67
            if result is not None:
 
68
                local_extra, remote_extra = result
 
69
                local_extra = sorted_revisions(local_extra, 
 
70
                                               local_rev_history_map)
 
71
                remote_extra = sorted_revisions(remote_extra, 
 
72
                                                remote_rev_history_map)
 
73
                return local_extra, remote_extra
 
74
 
 
75
            local_ancestry = _get_ancestry(local_branch.repository, progress, 
 
76
                                           "local", 2, local_rev_history)
 
77
            remote_ancestry = _get_ancestry(remote_branch.repository, progress,
 
78
                                            "remote", 3, remote_rev_history)
 
79
            progress.update('pondering', 4, 5)
 
80
            extras = local_ancestry.symmetric_difference(remote_ancestry) 
 
81
            local_extra = extras.intersection(set(local_rev_history))
 
82
            remote_extra = extras.intersection(set(remote_rev_history))
 
83
            local_extra = sorted_revisions(local_extra, local_rev_history_map)
 
84
            remote_extra = sorted_revisions(remote_extra, 
 
85
                                            remote_rev_history_map)
 
86
                    
 
87
        finally:
 
88
            remote_branch.unlock()
 
89
    finally:
 
90
        local_branch.unlock()
 
91
        progress.finished()
 
92
    return (local_extra, remote_extra)
 
93
 
 
94
def _shortcut(local_rev_history, remote_rev_history):
 
95
    local_history = set(local_rev_history)
 
96
    remote_history = set(remote_rev_history)
 
97
    if len(local_rev_history) == 0:
 
98
        return set(), remote_history
 
99
    elif len(remote_rev_history) == 0:
 
100
        return local_history, set()
 
101
    elif local_rev_history[-1] in remote_history:
 
102
        return set(), _after(remote_rev_history, local_rev_history)
 
103
    elif remote_rev_history[-1] in local_history:
 
104
        return _after(local_rev_history, remote_rev_history), set()
 
105
    else:
 
106
        return None
 
107
 
 
108
def _after(larger_history, smaller_history):
 
109
    return set(larger_history[larger_history.index(smaller_history[-1])+1:])
 
110
 
 
111
def _get_history(branch, progress, label, step):
 
112
    progress.update('%s history' % label, step, 5)
 
113
    rev_history = branch.revision_history()
 
114
    rev_history_map = dict(
 
115
        [(rev, rev_history.index(rev) + 1)
 
116
         for rev in rev_history])
 
117
    return rev_history, rev_history_map
 
118
 
 
119
def _get_ancestry(repository, progress, label, step, rev_history):
 
120
    progress.update('%s ancestry' % label, step, 5)
 
121
    if len(rev_history) > 0:
 
122
        ancestry = set(repository.get_ancestry(rev_history[-1],
 
123
                       topo_sorted=False))
 
124
    else:
 
125
        ancestry = set()
 
126
    return ancestry
 
127
    
 
128
 
 
129
def sorted_revisions(revisions, history_map):
 
130
    revisions = [(history_map[r],r) for r in revisions]
 
131
    revisions.sort()
 
132
    return revisions