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Viewing changes to bzrlib/export/dir_exporter.py

  • Committer: Robert Collins
  • Date: 2010-02-01 22:22:28 UTC
  • mto: This revision was merged to the branch mainline in revision 4997.
  • Revision ID: robertc@robertcollins.net-20100201222228-qr97l7uuwn84zisn
https://launchpad.net/bugs/515631
Set the file mtime when exporting to a directory to prevent triggering make rebuilds unnecessarily.

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bzrlib/export/dir_exporter.py
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# Copyright (C) 2005, 2009 Canonical Ltd
 
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# Copyright (C) 2005, 2009-2010 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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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""Export a Tree to a non-versioned directory.
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"""
 
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"""Export a bzrlib.tree.Tree to a new or empty directory."""
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import errno
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import os
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import StringIO
 
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import time
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from bzrlib import errors, osutils
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from bzrlib.export import _export_iter_entries
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def dir_exporter(tree, dest, root, subdir, filtered=False):
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    """Export this tree to a new directory.
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    `dest` should not exist, and will be created holding the
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    contents of this tree.
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    TODO: To handle subdirectories we need to create the
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           directories first.
 
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    `dest` should either not exist or should be empty. If it does not exist it
 
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    will be created holding the contents of this tree.
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    :note: If the export fails, the destination directory will be
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           left in a half-assed state.
 
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           left in an incompletely exported state: export is not transactional.
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    """
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    mutter('export version %r', tree)
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    try:
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    # The data returned here can be in any order, but we've already created all
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    # the directories
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    flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | getattr(os, 'O_BINARY', 0)
 
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    now = time.time()
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    for (relpath, executable), chunks in tree.iter_files_bytes(to_fetch):
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        if filtered:
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            filters = tree._content_filter_stack(relpath)
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            out.writelines(chunks)
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        finally:
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            out.close()
 
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        os.utime(fullpath, (now, now))