1 # Copyright (c) 2009 Google Inc. All rights reserved.

     2 # Copyright (c) 2009 Apple Inc. All rights reserved.

     3 #

     4 # Redistribution and use in source and binary forms, with or without

     5 # modification, are permitted provided that the following conditions are

     6 # met:

     7 #

     8 #     * Redistributions of source code must retain the above copyright

     9 # notice, this list of conditions and the following disclaimer.

    10 #     * Redistributions in binary form must reproduce the above

    11 # copyright notice, this list of conditions and the following disclaimer

    12 # in the documentation and/or other materials provided with the

    13 # distribution.

    14 #     * Neither the name of Google Inc. nor the names of its

    15 # contributors may be used to endorse or promote products derived from

    16 # this software without specific prior written permission.

    17 #

    18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29 

    30 import re

    31 

    32 

    33 def plural(noun):

    34     # This is a dumb plural() implementation that is just enough for our uses.

    35     if re.search("h$", noun):

    36         return noun + "es"

    37     else:

    38         return noun + "s"

    39 

    40 

    41 def pluralize(noun, count):

    42     if count != 1:

    43         noun = plural(noun)

    44     return "%d %s" % (count, noun)

    45 

    46 

    47 def join_with_separators(list_of_strings, separator=', ', only_two_separator=" and ", last_separator=', and '):

    48     if not list_of_strings:

    49         return ""

    50     if len(list_of_strings) == 1:

    51         return list_of_strings[0]

    52     if len(list_of_strings) == 2:

    53         return only_two_separator.join(list_of_strings)

    54     return "%s%s%s" % (separator.join(list_of_strings[:-1]), last_separator, list_of_strings[-1])