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  • Committer: The Breezy Bot
  • Author(s): Jelmer Vernooij
  • Date: 2017-08-27 13:48:59 UTC
  • mfrom: (6652.1.4 link-tree)
  • Revision ID: the_breezy_bot-20170827134859-sevcsvdkjvtdts1q
Import the 'link-tree' command from bzrtools. by jelmer review by gz

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Lines of Context:
breezy/transform.py
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        # after apply_deletions, don't reuse _FileMover
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        past_renames = None
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        pending_deletions = None
 
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def link_tree(target_tree, source_tree):
 
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    """Where possible, hard-link files in a tree to those in another tree.
 
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    :param target_tree: Tree to change
 
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    :param source_tree: Tree to hard-link from
 
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    """
 
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    tt = TreeTransform(target_tree)
 
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    try:
 
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        for (file_id, paths, changed_content, versioned, parent, name, kind,
 
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             executable) in target_tree.iter_changes(source_tree,
 
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             include_unchanged=True):
 
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            if changed_content:
 
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                continue
 
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            if kind != ('file', 'file'):
 
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                continue
 
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            if executable[0] != executable[1]:
 
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                continue
 
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            trans_id = tt.trans_id_tree_file_id(file_id)
 
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            tt.delete_contents(trans_id)
 
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            tt.create_hardlink(source_tree.id2abspath(file_id), trans_id)
 
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        tt.apply()
 
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    finally:
 
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        tt.finalize()