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bzrlib/trace.py
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        return
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def open_tracefile(tracefilename='~/.bzr.log'):
 
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def open_tracefile(tracefilename=None):
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    # Messages are always written to here, so that we have some
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    # information if something goes wrong.  In a future version this
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    # file will be removed on successful completion.
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    global _file_handler, _bzr_log_file
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    import codecs
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    trace_fname = os.path.join(os.path.expanduser(tracefilename))
 
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    if tracefilename is None:
 
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        if sys.platform == 'win32':
 
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            from bzrlib import win32utils
 
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            home = win32utils.get_home_location()
 
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        else:
 
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            home = os.path.expanduser('~')
 
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        tracefilename = os.path.join(home, '.bzr.log')
 
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    trace_fname = os.path.expanduser(tracefilename)
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    _rollover_trace_maybe(trace_fname)
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    try:
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        LINE_BUFFERED = 1
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        #tf = codecs.open(trace_fname, 'at', 'utf8', buffering=LINE_BUFFERED)
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        tf = open(trace_fname, 'at', LINE_BUFFERED)
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        _bzr_log_file = tf
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        if tf.tell() == 0:
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            tf.write("\nthis is a debug log for diagnosing/reporting problems in bzr\n")
 
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        # tf.tell() on windows always return 0 until some writing done
 
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        tf.write('\n')
 
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        if tf.tell() <= 2:
 
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            tf.write("this is a debug log for diagnosing/reporting problems in bzr\n")
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            tf.write("you can delete or truncate this file, or include sections in\n")
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            tf.write("bug reports to bazaar@lists.canonical.com\n\n")
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        _file_handler = logging.StreamHandler(tf)