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  • Committer: Richard Wilbur
  • Date: 2016-02-04 19:07:28 UTC
  • mto: This revision was merged to the branch mainline in revision 6618.
  • Revision ID: richard.wilbur@gmail.com-20160204190728-p0zvfii6zase0fw7
Update COPYING.txt from the original http://www.gnu.org/licenses/gpl-2.0.txt  (Only differences were in whitespace.)  Thanks to Petr Stodulka for pointing out the discrepancy.

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bzrlib/uncommit.py
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"""Remove the last revision from the history of the current branch."""
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from __future__ import absolute_import
 
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# TODO: make the guts of this methods on tree, branch.
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from bzrlib import (
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from bzrlib.errors import BoundBranchOutOfDate
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def remove_tags(branch, graph, old_tip, parents):
 
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    """Remove tags on revisions between old_tip and new_tip.
 
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    :param branch: Branch to remove tags from
 
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    :param graph: Graph object for branch repository
 
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    :param old_tip: Old branch tip
 
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    :param parents: New parents
 
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    :return: Names of the removed tags
 
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    """
 
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    reverse_tags = branch.tags.get_reverse_tag_dict()
 
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    ancestors = graph.find_unique_ancestors(old_tip, parents)
 
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    removed_tags = []
 
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    for revid, tags in reverse_tags.iteritems():
 
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        if not revid in ancestors:
 
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            continue
 
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        for tag in tags:
 
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            branch.tags.delete_tag(tag)
 
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            removed_tags.append(tag)
 
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    return removed_tags
 
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def uncommit(branch, dry_run=False, verbose=False, revno=None, tree=None,
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             local=False):
 
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             local=False, keep_tags=False):
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    """Remove the last revision from the supplied branch.
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    :param dry_run: Don't actually change anything
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    :param local: If this branch is bound, only remove the revisions from the
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        local branch. If this branch is not bound, it is an error to pass
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        local=True.
 
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    :param keep_tags: Whether to keep tags pointing at the removed revisions
 
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        around.
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    """
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    unlockable = []
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    try:
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            revno = old_revno
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        new_revno = revno - 1
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        revid_iterator = branch.repository.iter_reverse_revision_history(
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                            old_tip)
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        cur_revno = old_revno
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        new_revision_id = old_tip
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        graph = branch.repository.get_graph()
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        for rev_id in revid_iterator:
 
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        for rev_id in graph.iter_lefthand_ancestry(old_tip):
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            if cur_revno == new_revno:
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                new_revision_id = rev_id
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                break
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                    hook_new_tip = None
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                hook(hook_local, hook_master, old_revno, old_tip, new_revno,
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                     hook_new_tip)
 
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            if not _mod_revision.is_null(new_revision_id):
 
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                parents = [new_revision_id]
 
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            else:
 
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                parents = []
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            if tree is not None:
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                if not _mod_revision.is_null(new_revision_id):
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                    parents = [new_revision_id]
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                else:
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                    parents = []
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                parents.extend(reversed(pending_merges))
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                tree.set_parent_ids(parents)
 
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            if branch.supports_tags() and not keep_tags:
 
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                remove_tags(branch, graph, old_tip, parents)
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    finally:
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        for item in reversed(unlockable):
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            item.unlock()