9c8e337e96
names without manual encoding * src/DateParser.py: use locale.nl_langinfo to get month names without manual encoding svn: r3550
242 lines
8.3 KiB
Python
242 lines
8.3 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2004 Donald N. Allingham
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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U.S. English date parsing class. Serves as the base class for any localized
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date parsing class.
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"""
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__author__ = "Donald N. Allingham"
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__version__ = "$Revision$"
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import string
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import re
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import time
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import locale
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import Date
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class DateParser:
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"""
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Converts a text string into a Date object. If the date cannot be
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converted, the text string is assigned.
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"""
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# determine the code set returned by nl_langinfo
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_codeset = locale.nl_langinfo(locale.CODESET)
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month_to_int = {
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unicode(locale.nl_langinfo(locale.MON_1),_codeset).lower() : 1,
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unicode(locale.nl_langinfo(locale.ABMON_1),_codeset).lower() : 1,
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unicode(locale.nl_langinfo(locale.MON_2),_codeset).lower() : 2,
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unicode(locale.nl_langinfo(locale.ABMON_2),_codeset).lower() : 2,
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unicode(locale.nl_langinfo(locale.MON_3),_codeset).lower() : 3,
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unicode(locale.nl_langinfo(locale.ABMON_3),_codeset).lower() : 3,
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unicode(locale.nl_langinfo(locale.MON_4),_codeset).lower() : 4,
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unicode(locale.nl_langinfo(locale.ABMON_4),_codeset).lower() : 4,
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unicode(locale.nl_langinfo(locale.MON_5),_codeset).lower() : 5,
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unicode(locale.nl_langinfo(locale.ABMON_5),_codeset).lower() : 5,
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unicode(locale.nl_langinfo(locale.MON_6),_codeset).lower() : 6,
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unicode(locale.nl_langinfo(locale.ABMON_6),_codeset).lower() : 6,
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unicode(locale.nl_langinfo(locale.MON_7),_codeset).lower() : 7,
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unicode(locale.nl_langinfo(locale.ABMON_7),_codeset).lower() : 7,
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unicode(locale.nl_langinfo(locale.MON_8),_codeset).lower() : 8,
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unicode(locale.nl_langinfo(locale.ABMON_8),_codeset).lower() : 8,
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unicode(locale.nl_langinfo(locale.MON_9),_codeset).lower() : 9,
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unicode(locale.nl_langinfo(locale.ABMON_9),_codeset).lower() : 9,
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unicode(locale.nl_langinfo(locale.MON_10),_codeset).lower() : 10,
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unicode(locale.nl_langinfo(locale.ABMON_10),_codeset).lower(): 10,
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unicode(locale.nl_langinfo(locale.MON_11),_codeset).lower() : 11,
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unicode(locale.nl_langinfo(locale.ABMON_11),_codeset).lower(): 11,
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unicode(locale.nl_langinfo(locale.MON_12),_codeset).lower() : 12,
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unicode(locale.nl_langinfo(locale.ABMON_12),_codeset).lower(): 12,
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}
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modifier_to_int = {
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'before' : Date.MOD_BEFORE,
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'bef' : Date.MOD_BEFORE,
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'bef.' : Date.MOD_BEFORE,
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'after' : Date.MOD_AFTER,
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'aft' : Date.MOD_AFTER,
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'aft.' : Date.MOD_AFTER,
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'about' : Date.MOD_ABOUT,
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'abt.' : Date.MOD_ABOUT,
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'abt' : Date.MOD_ABOUT,
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'circa' : Date.MOD_ABOUT,
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'c.' : Date.MOD_ABOUT,
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'around' : Date.MOD_ABOUT,
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}
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quality_to_int = {
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'estimated' : Date.QUAL_ESTIMATED,
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'est.' : Date.QUAL_ESTIMATED,
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'est' : Date.QUAL_ESTIMATED,
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'calc.' : Date.QUAL_CALCULATED,
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'calc' : Date.QUAL_CALCULATED,
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'calculated' : Date.QUAL_CALCULATED,
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}
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_qual_str = '(' + '|'.join(
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[ key.replace('.','\.') for key in quality_to_int.keys() ]
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) + ')'
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_mod_str = '(' + '|'.join(
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[ key.replace('.','\.') for key in modifier_to_int.keys() ]
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) + ')'
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_qual_str = '(' + string.join(quality_to_int.keys(),'|') + ')'
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_mod_str = '(' + string.join(modifier_to_int.keys(),'|') + ')'
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_mon_str = '(' + string.join(month_to_int.keys(),'|') + ')'
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_qual = re.compile("%s\s+(.*)" % _qual_str,re.IGNORECASE)
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_span = re.compile("from\s+(.*)\s+to\s+(.*)",re.IGNORECASE)
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_range = re.compile("(bet.|between)\s+(.*)\s+and\s+(.*)",re.IGNORECASE)
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_modifier = re.compile('%s\s+(.*)' % _mod_str,re.IGNORECASE)
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_text = re.compile('%s\s+(\d+)?\s*,?\s*((\d+)(/\d+)?)?' % _mon_str,re.IGNORECASE)
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_text2 = re.compile('(\d+)?\s+?%s\s*((\d+)(/\d+)?)?' % _mon_str,re.IGNORECASE)
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_numeric = re.compile("((\d+)[/\.])?((\d+)[/\.])?(\d+)")
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_iso = re.compile("(\d+)-(\d+)-(\d+)")
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def _get_int(self,val):
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"""
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Converts the string to an integer if the value is not None. If the
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value is None, a zero is returned
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"""
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if val == None:
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return 0
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else:
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return int(val)
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def _parse_subdate(self,text):
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"""
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Converts only the date portion of a date.
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"""
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try:
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value = time.strptime(text)
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return (value[2],value[1],value[0],False)
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except ValueError:
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pass
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match = self._text.match(text)
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if match:
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groups = match.groups()
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if groups[0] == None:
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m = 0
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else:
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m = self.month_to_int[groups[0].lower()]
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d = self._get_int(groups[1])
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if groups[2] == None:
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y = 0
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s = None
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else:
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y = int(groups[3])
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s = groups[4] != None
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return (d,m,y,s)
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match = self._text2.match(text)
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if match:
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groups = match.groups()
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if groups[1] == None:
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m = 0
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else:
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m = self.month_to_int[groups[1].lower()]
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d = self._get_int(groups[0])
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if groups[2] == None:
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y = 0
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s = None
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else:
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y = int(groups[3])
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s = groups[4] != None
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return (d,m,y,s)
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match = self._iso.match(text)
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if match:
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groups = match.groups()
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y = self._get_int(groups[0])
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m = self._get_int(groups[1])
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d = self._get_int(groups[2])
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return (d,m,y,False)
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match = self._numeric.match(text)
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if match:
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groups = match.groups()
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m = self._get_int(groups[1])
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d = self._get_int(groups[3])
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y = self._get_int(groups[4])
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return (d,m,y,False)
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return Date.EMPTY
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def set_date(self,date,text):
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"""
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Parses the text, returning a Date object.
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"""
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date.set_text_value(text)
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qual = Date.QUAL_NONE
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match = self._qual.match(text)
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if match:
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grps = match.groups()
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qual = self.quality_to_int[grps[0].lower()]
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text = grps[1]
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match = self._span.match(text)
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if match:
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grps = match.groups()
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start = self._parse_subdate(grps[0])
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stop = self._parse_subdate(grps[1])
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date.set(qual,Date.MOD_SPAN,Date.CAL_GREGORIAN,start + stop)
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return
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match = self._range.match(text)
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if match:
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grps = match.groups()
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start = self._parse_subdate(grps[1])
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stop = self._parse_subdate(grps[2])
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date.set(qual,Date.MOD_RANGE,Date.CAL_GREGORIAN,start + stop)
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return
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match = self._modifier.match(text)
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if match:
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grps = match.groups()
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start = self._parse_subdate(grps[1])
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mod = self.modifier_to_int.get(grps[0].lower(),Date.MOD_NONE)
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date.set(qual,mod,Date.CAL_GREGORIAN,start)
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return date
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subdate = self._parse_subdate(text)
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if subdate == Date.EMPTY:
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date.set_as_text(text)
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else:
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date.set(qual,Date.MOD_NONE,Date.CAL_GREGORIAN,subdate)
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def parse(self,text):
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"""
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Parses the text, returning a Date object.
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"""
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new_date = Date.Date()
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self.set_date(new_date,text)
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return new_date
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