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Viewing changes to utilities/link-external-sourcecode

  • Committer: Launchpad Patch Queue Manager
  • Date: 2009-06-01 00:05:40 UTC
  • mfrom: (8357.5.17 buildout2)
  • Revision ID: launchpad@pqm.canonical.com-20090601000540-ffe3v50mzjzoa05h
[r=flacoste,jml][ui=none] Begin to use buildout for developing and
        deploying launchpad. Explanatory email to follow;
        see also doc/buildout.txt.

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utilities/link-external-sourcecode
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def gen_missing_files(source, destination):
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    """Generate info on every file in source not in destination.
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    Yields `(source, destination, broken)` tuples, where `broken`
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    means that the destination is a broken symbolic link.
 
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    Yields `(source, destination)` tuples.
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    """
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    for name in listdir(source):
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        destination_file = join(destination, name)
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        if not exists(destination_file):
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            source_file = join(source, name)
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            yield source_file, destination_file, islink(destination_file)
 
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            yield source_file, destination_file,
 
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def link(source, destination):
 
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    """Symlink source to destination.
 
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    Assumes destination is missing or broken.
 
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    """
 
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    try:
 
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        if islink(destination):
 
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            unlink(destination)
 
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        symlink(source, destination)
 
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    except OSError, error:
 
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        stderr.write(
 
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            '  Error linking %s: %s\n' % (basename(destination), error))
 
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    else:
 
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        if options.verbose:
 
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            stdout.write('%s -> %s\n' % (
 
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                    sep.join(destination.rsplit(sep, 3)[-3:]), source))
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if __name__ == '__main__':
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        realpath(join(options.parent, 'sourcecode')),
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        abspath(join(options.target, 'sourcecode')))
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    for target, link, broken in missing_files:
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        try:
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            if broken:
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                unlink(link)
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            symlink(target, link)
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        except OSError, error:
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            stderr.write(
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                '  Error linking %s: %s\n' % (basename(link), error))
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        else:
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            if options.verbose:
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                stdout.write('%s -> %s\n' % (
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                        sep.join(link.rsplit(sep, 3)[-3:]), target))
 
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    for source, destination in missing_files:
 
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        link(source, destination)
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    for folder_name in ('eggs', 'download-cache'):
 
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        source = join(options.parent, folder_name)
 
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        destination = join(options.target, folder_name)
 
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        if not exists(destination):
 
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            link(source, destination)
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# End