1  # Copyright 2010-2023 Kurt McKee <contactme@kurtmckee.org>
   2  # Copyright 2002-2008 Mark Pilgrim
   3  # All rights reserved.
   4  #
   5  # This file is a part of feedparser.
   6  #
   7  # Redistribution and use in source and binary forms, with or without
   8  # modification, are permitted provided that the following conditions are met:
   9  #
  10  # * Redistributions of source code must retain the above copyright notice,
  11  #   this list of conditions and the following disclaimer.
  12  # * Redistributions in binary form must reproduce the above copyright notice,
  13  #   this list of conditions and the following disclaimer in the documentation
  14  #   and/or other materials provided with the distribution.
  15  #
  16  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 'AS IS'
  17  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  20  # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  # POSSIBILITY OF SUCH DAMAGE.
  27  
  28  import re
  29  
  30  from .rfc822 import _parse_date_rfc822
  31  
  32  # Unicode strings for Greek date strings
  33  _greek_months = {
  34     '\u0399\u03b1\u03bd': 'Jan',        # c9e1ed in iso-8859-7
  35     '\u03a6\u03b5\u03b2': 'Feb',        # d6e5e2 in iso-8859-7
  36     '\u039c\u03ac\u03ce': 'Mar',        # ccdcfe in iso-8859-7
  37     '\u039c\u03b1\u03ce': 'Mar',        # cce1fe in iso-8859-7
  38     '\u0391\u03c0\u03c1': 'Apr',        # c1f0f1 in iso-8859-7
  39     '\u039c\u03ac\u03b9': 'May',        # ccdce9 in iso-8859-7
  40     '\u039c\u03b1\u03ca': 'May',        # cce1fa in iso-8859-7
  41     '\u039c\u03b1\u03b9': 'May',        # cce1e9 in iso-8859-7
  42     '\u0399\u03bf\u03cd\u03bd': 'Jun',  # c9effded in iso-8859-7
  43     '\u0399\u03bf\u03bd': 'Jun',        # c9efed in iso-8859-7
  44     '\u0399\u03bf\u03cd\u03bb': 'Jul',  # c9effdeb in iso-8859-7
  45     '\u0399\u03bf\u03bb': 'Jul',        # c9f9eb in iso-8859-7
  46     '\u0391\u03cd\u03b3': 'Aug',        # c1fde3 in iso-8859-7
  47     '\u0391\u03c5\u03b3': 'Aug',        # c1f5e3 in iso-8859-7
  48     '\u03a3\u03b5\u03c0': 'Sep',        # d3e5f0 in iso-8859-7
  49     '\u039f\u03ba\u03c4': 'Oct',        # cfeaf4 in iso-8859-7
  50     '\u039d\u03bf\u03ad': 'Nov',        # cdefdd in iso-8859-7
  51     '\u039d\u03bf\u03b5': 'Nov',        # cdefe5 in iso-8859-7
  52     '\u0394\u03b5\u03ba': 'Dec',        # c4e5ea in iso-8859-7
  53  }
  54  
  55  _greek_wdays = {
  56     '\u039a\u03c5\u03c1': 'Sun',  # caf5f1 in iso-8859-7
  57     '\u0394\u03b5\u03c5': 'Mon',  # c4e5f5 in iso-8859-7
  58     '\u03a4\u03c1\u03b9': 'Tue',  # d4f1e9 in iso-8859-7
  59     '\u03a4\u03b5\u03c4': 'Wed',  # d4e5f4 in iso-8859-7
  60     '\u03a0\u03b5\u03bc': 'Thu',  # d0e5ec in iso-8859-7
  61     '\u03a0\u03b1\u03c1': 'Fri',  # d0e1f1 in iso-8859-7
  62     '\u03a3\u03b1\u03b2': 'Sat',  # d3e1e2 in iso-8859-7
  63  }
  64  
  65  _greek_date_format_re = re.compile(r'([^,]+),\s+(\d{2})\s+([^\s]+)\s+(\d{4})\s+(\d{2}):(\d{2}):(\d{2})\s+([^\s]+)')
  66  
  67  
  68  def _parse_date_greek(date_string):
  69      """Parse a string according to a Greek 8-bit date format."""
  70      m = _greek_date_format_re.match(date_string)
  71      if not m:
  72          return
  73      wday = _greek_wdays[m.group(1)]
  74      month = _greek_months[m.group(3)]
  75      rfc822date = '%(wday)s, %(day)s %(month)s %(year)s %(hour)s:%(minute)s:%(second)s %(zonediff)s' % \
  76                   {
  77                       'wday': wday,
  78                       'day': m.group(2),
  79                       'month': month,
  80                       'year': m.group(4),
  81                       'hour': m.group(5),
  82                       'minute': m.group(6),
  83                       'second': m.group(7),
  84                       'zonediff': m.group(8),
  85                   }
  86      return _parse_date_rfc822(rfc822date)
  87