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  • Committer: Ian Clatworthy
  • Date: 2009-02-25 07:01:31 UTC
  • mto: (4171.1.1 ianc-integration)
  • mto: This revision was merged to the branch mainline in revision 4173.
  • Revision ID: ian.clatworthy@canonical.com-20090225070131-wjq5cy6ueuf2wqdi
added osutils.size_sha_file() with tests

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bzrlib/osutils.py
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    return s.hexdigest()
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def size_sha_file(f):
 
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    """Calculate the size and hexdigest of an open file.
 
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    The file cursor should be already at the start and
 
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    the caller is responsible for closing the file afterwards.
 
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    """
 
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    size = 0
 
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    s = sha()
 
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    BUFSIZE = 128<<10
 
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    while True:
 
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        b = f.read(BUFSIZE)
 
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        if not b:
 
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            break
 
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        size += len(b)
 
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        s.update(b)
 
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    return size, s.hexdigest()
 
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def sha_file_by_name(fname):
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    """Calculate the SHA1 of a file by reading the full text"""
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    s = sha()