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  • Committer: Robert Collins
  • Date: 2005-10-18 13:11:57 UTC
  • mfrom: (1185.16.72) (0.2.1)
  • Revision ID: robertc@robertcollins.net-20051018131157-76a9970aa78e927e
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bzrlib/missing.py
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# Copyright (C) 2005, 2006 Canonical Ltd
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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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"""Display what revisions are missing in 'other' from 'this' and vice versa."""
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import bzrlib.ui as ui
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def iter_log_data(revisions, revision_source, verbose):
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    last_tree = revision_source.revision_tree(None)
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    last_rev_id = None
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    for revno, rev_id in revisions:
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        rev = revision_source.get_revision(rev_id)
 
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"""\
 
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A plugin for displaying what revisions are in 'other' but not in local.
 
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"""
 
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def show_missing(br_local, br_remote, verbose=False, quiet=False):
 
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    """Show the revisions which exist in br_remote, that 
 
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    do not exist in br_local.
 
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    """
 
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    from bzrlib.log import show_one_log
 
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    import sys
 
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    local_history = br_local.revision_history()
 
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    remote_history = br_remote.revision_history()
 
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    if local_history == remote_history:
 
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        if not quiet:
 
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            print 'Trees are identical.'
 
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        return 0
 
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    if local_history[:len(remote_history)] == remote_history:
 
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        # Local is not missing anything from remote, so consider it
 
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        # up-to-date
 
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        if not quiet:
 
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            print 'Local tree has all of remote revisions (remote is missing local)'
 
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        return 0
 
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    if quiet:
 
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        return 1
 
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    # Check for divergence
 
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    common_idx = min(len(local_history), len(remote_history)) - 1
 
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    if common_idx >= 0 and local_history[common_idx] != remote_history[common_idx]:
 
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        print 'Trees have diverged'
 
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    local_rev_set = set(local_history)
 
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    # Find the last common revision between the two trees
 
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    revno = 0
 
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    for revno, (local_rev, remote_rev) in enumerate(zip(local_history, remote_history)):
 
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        if local_rev != remote_rev:
 
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            break
 
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    missing_remote = []
 
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    for rno, rev_id in enumerate(remote_history[revno:]):
 
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        # This assumes that you can have a revision in the
 
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        # local history, which does not have the same ancestry
 
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        # as the remote ancestry.
 
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        # This may or may not be possible.
 
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        # In the future this should also checked for merged revisions.
 
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        if rev_id not in local_rev_set:
 
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            missing_remote.append((rno+revno+1, rev_id))
 
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    print 'Missing %d revisions' %  len(missing_remote)
 
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    print
 
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    if verbose:
 
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        from bzrlib.diff import compare_trees
 
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        from bzrlib.tree import EmptyTree
 
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        show_ids = True
 
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        last_tree = EmptyTree
 
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        last_rev_id = None
 
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    else:
 
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        show_ids = False
 
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    for revno, rev_id in missing_remote:
 
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        rev = br_remote.get_revision(rev_id)
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        if verbose:
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            remote_tree = revision_source.revision_tree(rev_id)
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            parent_rev_id = rev.parent_ids[0]
 
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            parent_rev_id = rev.parents[0].revision_id
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            if last_rev_id == parent_rev_id:
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                parent_tree = last_tree
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            else:
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                parent_tree = revision_source.revision_tree(parent_rev_id)
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            revision_tree = revision_source.revision_tree(rev_id)
 
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                parent_tree = br_remote.revision_tree(parent_rev_id)
 
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            revision_tree = br_remote.revision_tree(rev_id)
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            last_rev_id = rev_id
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            last_tree = revision_tree
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            delta = revision_tree.changes_from(parent_tree)
 
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            delta = compare_trees(revision_tree, parent_tree)
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        else:
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            delta = None
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        yield revno, rev, delta
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def find_unmerged(local_branch, remote_branch):
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    progress = ui.ui_factory.nested_progress_bar()
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    local_branch.lock_read()
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    try:
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        remote_branch.lock_read()
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        try:
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            local_rev_history, local_rev_history_map = \
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                _get_history(local_branch, progress, "local", 0)
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            remote_rev_history, remote_rev_history_map = \
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                _get_history(remote_branch, progress, "remote", 1)
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            result = _shortcut(local_rev_history, remote_rev_history)
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            if result is not None:
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                local_extra, remote_extra = result
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                local_extra = sorted_revisions(local_extra, 
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                                               local_rev_history_map)
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                remote_extra = sorted_revisions(remote_extra, 
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                                                remote_rev_history_map)
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                return local_extra, remote_extra
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            local_ancestry = _get_ancestry(local_branch.repository, progress, 
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                                           "local", 2, local_rev_history)
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            remote_ancestry = _get_ancestry(remote_branch.repository, progress,
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                                            "remote", 3, remote_rev_history)
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            progress.update('pondering', 4, 5)
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            extras = local_ancestry.symmetric_difference(remote_ancestry) 
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            local_extra = extras.intersection(set(local_rev_history))
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            remote_extra = extras.intersection(set(remote_rev_history))
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            local_extra = sorted_revisions(local_extra, local_rev_history_map)
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            remote_extra = sorted_revisions(remote_extra, 
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                                            remote_rev_history_map)
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        finally:
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            remote_branch.unlock()
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    finally:
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        local_branch.unlock()
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        progress.finished()
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    return (local_extra, remote_extra)
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def _shortcut(local_rev_history, remote_rev_history):
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    local_history = set(local_rev_history)
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    remote_history = set(remote_rev_history)
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    if len(local_rev_history) == 0:
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        return set(), remote_history
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    elif len(remote_rev_history) == 0:
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        return local_history, set()
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    elif local_rev_history[-1] in remote_history:
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        return set(), _after(remote_rev_history, local_rev_history)
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    elif remote_rev_history[-1] in local_history:
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        return _after(local_rev_history, remote_rev_history), set()
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    else:
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        return None
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def _after(larger_history, smaller_history):
96
 
    return set(larger_history[larger_history.index(smaller_history[-1])+1:])
97
 
 
98
 
def _get_history(branch, progress, label, step):
99
 
    progress.update('%s history' % label, step, 5)
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    rev_history = branch.revision_history()
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    rev_history_map = dict(
102
 
        [(rev, rev_history.index(rev) + 1)
103
 
         for rev in rev_history])
104
 
    return rev_history, rev_history_map
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106
 
def _get_ancestry(repository, progress, label, step, rev_history):
107
 
    progress.update('%s ancestry' % label, step, 5)
108
 
    if len(rev_history) > 0:
109
 
        ancestry = set(repository.get_ancestry(rev_history[-1]))
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    else:
111
 
        ancestry = set()
112
 
    return ancestry
113
 
    
114
 
 
115
 
def sorted_revisions(revisions, history_map):
116
 
    revisions = [(history_map[r],r) for r in revisions]
117
 
    revisions.sort()
118
 
    return revisions
 
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        show_one_log(revno, rev, delta, verbose, sys.stdout, 'original')
 
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    return 1
 
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