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annotate roundup/date.py @ 4546:d39c37fd2940 git

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author Eric S. Raymond <esr@thyrsus.com>
date Tue, 18 Oct 2011 10:20:29 -0400
parents 34dce76bb202
children 6e3e4f24c753
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1 #
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2 # Copyright (c) 2001 Bizar Software Pty Ltd (http://www.bizarsoftware.com.au/)
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3 # This module is free software, and you may redistribute it and/or modify
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4 # under the same terms as Python, so long as this copyright message and
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5 # disclaimer are retained in their original form.
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6 #
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7 # IN NO EVENT SHALL BIZAR SOFTWARE PTY LTD BE LIABLE TO ANY PARTY FOR
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8 # DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING
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9 # OUT OF THE USE OF THIS CODE, EVEN IF THE AUTHOR HAS BEEN ADVISED OF THE
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10 # POSSIBILITY OF SUCH DAMAGE.
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11 #
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12 # BIZAR SOFTWARE PTY LTD SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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13 # BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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14 # FOR A PARTICULAR PURPOSE. THE CODE PROVIDED HEREUNDER IS ON AN "AS IS"
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15 # BASIS, AND THERE IS NO OBLIGATION WHATSOEVER TO PROVIDE MAINTENANCE,
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16 # SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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17 #
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18 # $Id: date.py,v 1.94 2007-12-23 00:23:23 richard Exp $
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19
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20 """Date, time and time interval handling.
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21 """
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22 __docformat__ = 'restructuredtext'
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24 import calendar
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25 import datetime
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26 import time
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27 import re
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29 try:
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30 import pytz
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31 except ImportError:
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32 pytz = None
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33
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34 from roundup import i18n
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35
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36 # no, I don't know why we must anchor the date RE when we only ever use it
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37 # in a match()
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38 date_re = re.compile(r'''^
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39 ((?P<y>\d\d\d\d)([/-](?P<m>\d\d?)([/-](?P<d>\d\d?))?)? # yyyy[-mm[-dd]]
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40 |(?P<a>\d\d?)[/-](?P<b>\d\d?))? # or mm-dd
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41 (?P<n>\.)? # .
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42 (((?P<H>\d?\d):(?P<M>\d\d))?(:(?P<S>\d\d?(\.\d+)?))?)? # hh:mm:ss
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43 (?P<o>[\d\smywd\-+]+)? # offset
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44 $''', re.VERBOSE)
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45 serialised_date_re = re.compile(r'''
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46 (\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d?(\.\d+)?)
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47 ''', re.VERBOSE)
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48
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49 _timedelta0 = datetime.timedelta(0)
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50
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51 # load UTC tzinfo
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52 if pytz:
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53 UTC = pytz.utc
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54 else:
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55 # fallback implementation from Python Library Reference
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56
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57 class _UTC(datetime.tzinfo):
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58
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59 """Universal Coordinated Time zoneinfo"""
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60
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61 def utcoffset(self, dt):
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62 return _timedelta0
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63
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64 def tzname(self, dt):
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65 return "UTC"
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66
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67 def dst(self, dt):
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68 return _timedelta0
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69
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70 def __repr__(self):
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71 return "<UTC>"
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72
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73 # pytz adjustments interface
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74 # Note: pytz verifies that dt is naive datetime for localize()
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75 # and not naive datetime for normalize().
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76 # In this implementation, we don't care.
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77
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78 def normalize(self, dt, is_dst=False):
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79 return dt.replace(tzinfo=self)
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80
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81 def localize(self, dt, is_dst=False):
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82 return dt.replace(tzinfo=self)
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83
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84 UTC = _UTC()
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85
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86 # integral hours offsets were available in Roundup versions prior to 1.1.3
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87 # and still are supported as a fallback if pytz module is not installed
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88 class SimpleTimezone(datetime.tzinfo):
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89
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90 """Simple zoneinfo with fixed numeric offset and no daylight savings"""
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91
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92 def __init__(self, offset=0, name=None):
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93 super(SimpleTimezone, self).__init__()
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94 self.offset = offset
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95 if name:
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96 self.name = name
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97 else:
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98 self.name = "Etc/GMT%+d" % self.offset
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99
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100 def utcoffset(self, dt):
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101 return datetime.timedelta(hours=self.offset)
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102
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103 def tzname(self, dt):
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104 return self.name
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105
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106 def dst(self, dt):
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107 return _timedelta0
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108
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109 def __repr__(self):
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110 return "<%s: %s>" % (self.__class__.__name__, self.name)
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111
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112 # pytz adjustments interface
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113
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114 def normalize(self, dt):
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115 return dt.replace(tzinfo=self)
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116
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117 def localize(self, dt, is_dst=False):
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118 return dt.replace(tzinfo=self)
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119
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120 # simple timezones with fixed offset
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121 _tzoffsets = dict(GMT=0, UCT=0, EST=5, MST=7, HST=10)
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122
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123 def get_timezone(tz):
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124 # if tz is None, return None (will result in naive datetimes)
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125 # XXX should we return UTC for None?
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126 if tz is None:
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127 return None
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128 # try integer offset first for backward compatibility
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129 try:
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130 utcoffset = int(tz)
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131 except (TypeError, ValueError):
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132 pass
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133 else:
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134 if utcoffset == 0:
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135 return UTC
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136 else:
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137 return SimpleTimezone(utcoffset)
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138 # tz is a timezone name
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139 if pytz:
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140 return pytz.timezone(tz)
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141 elif tz == "UTC":
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142 return UTC
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143 elif tz in _tzoffsets:
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144 return SimpleTimezone(_tzoffsets[tz], tz)
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145 else:
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146 raise KeyError, tz
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147
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148 def _utc_to_local(y,m,d,H,M,S,tz):
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149 TZ = get_timezone(tz)
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150 frac = S - int(S)
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151 dt = datetime.datetime(y, m, d, H, M, int(S), tzinfo=UTC)
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152 y,m,d,H,M,S = dt.astimezone(TZ).timetuple()[:6]
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153 S = S + frac
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154 return (y,m,d,H,M,S)
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155
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156 def _local_to_utc(y,m,d,H,M,S,tz):
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157 TZ = get_timezone(tz)
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158 dt = datetime.datetime(y,m,d,H,M,int(S))
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159 y,m,d,H,M,S = TZ.localize(dt).utctimetuple()[:6]
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160 return (y,m,d,H,M,S)
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161
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162 class Date:
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163 '''
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164 As strings, date-and-time stamps are specified with the date in
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165 international standard format (yyyy-mm-dd) joined to the time
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166 (hh:mm:ss) by a period ("."). Dates in this form can be easily compared
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167 and are fairly readable when printed. An example of a valid stamp is
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168 "2000-06-24.13:03:59". We'll call this the "full date format". When
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169 Timestamp objects are printed as strings, they appear in the full date
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170 format with the time always given in GMT. The full date format is
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171 always exactly 19 characters long.
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172
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173 For user input, some partial forms are also permitted: the whole time
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174 or just the seconds may be omitted; and the whole date may be omitted
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175 or just the year may be omitted. If the time is given, the time is
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176 interpreted in the user's local time zone. The Date constructor takes
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177 care of these conversions. In the following examples, suppose that yyyy
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178 is the current year, mm is the current month, and dd is the current day
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179 of the month; and suppose that the user is on Eastern Standard Time.
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180 Examples::
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181
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182 "2000-04-17" means <Date 2000-04-17.00:00:00>
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183 "01-25" means <Date yyyy-01-25.00:00:00>
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184 "2000-04-17.03:45" means <Date 2000-04-17.08:45:00>
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185 "08-13.22:13" means <Date yyyy-08-14.03:13:00>
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186 "11-07.09:32:43" means <Date yyyy-11-07.14:32:43>
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187 "14:25" means <Date yyyy-mm-dd.19:25:00>
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188 "8:47:11" means <Date yyyy-mm-dd.13:47:11>
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189 "2003" means <Date 2003-01-01.00:00:00>
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190 "2003-06" means <Date 2003-06-01.00:00:00>
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191 "." means "right now"
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192
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193 The Date class should understand simple date expressions of the form
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194 stamp + interval and stamp - interval. When adding or subtracting
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195 intervals involving months or years, the components are handled
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196 separately. For example, when evaluating "2000-06-25 + 1m 10d", we
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197 first add one month to get 2000-07-25, then add 10 days to get
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198 2000-08-04 (rather than trying to decide whether 1m 10d means 38 or 40
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199 or 41 days). Example usage::
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200
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201 >>> Date(".")
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202 <Date 2000-06-26.00:34:02>
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203 >>> _.local(-5)
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204 "2000-06-25.19:34:02"
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205 >>> Date(". + 2d")
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206 <Date 2000-06-28.00:34:02>
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207 >>> Date("1997-04-17", -5)
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208 <Date 1997-04-17.00:00:00>
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209 >>> Date("01-25", -5)
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210 <Date 2000-01-25.00:00:00>
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211 >>> Date("08-13.22:13", -5)
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212 <Date 2000-08-14.03:13:00>
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213 >>> Date("14:25", -5)
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214 <Date 2000-06-25.19:25:00>
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215
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216 The date format 'yyyymmddHHMMSS' (year, month, day, hour,
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217 minute, second) is the serialisation format returned by the serialise()
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218 method, and is accepted as an argument on instatiation.
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219
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220 The date class handles basic arithmetic::
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221
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222 >>> d1=Date('.')
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223 >>> d1
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224 <Date 2004-04-06.22:04:20.766830>
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225 >>> d2=Date('2003-07-01')
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226 >>> d2
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227 <Date 2003-07-01.00:00:0.000000>
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228 >>> d1-d2
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229 <Interval + 280d 22:04:20>
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230 >>> i1=_
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231 >>> d2+i1
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232 <Date 2004-04-06.22:04:20.000000>
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233 >>> d1-i1
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234 <Date 2003-07-01.00:00:0.000000>
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235 '''
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236
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237 def __init__(self, spec='.', offset=0, add_granularity=False,
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238 translator=i18n):
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239 """Construct a date given a specification and a time zone offset.
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240
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241 'spec'
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242 is a full date or a partial form, with an optional added or
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243 subtracted interval. Or a date 9-tuple.
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244 'offset'
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245 is the local time zone offset from GMT in hours.
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246 'translator'
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247 is i18n module or one of gettext translation classes.
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248 It must have attributes 'gettext' and 'ngettext',
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249 serving as translation functions.
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250 """
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251 self.setTranslator(translator)
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252 # Python 2.3+ datetime object
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253 # common case when reading from database: avoid double-conversion
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254 if isinstance(spec, datetime.datetime):
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255 if offset == 0:
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256 self.year, self.month, self.day, self.hour, self.minute, \
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257 self.second = spec.timetuple()[:6]
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258 else:
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259 TZ = get_timezone(tz)
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diff changeset
260 self.year, self.month, self.day, self.hour, self.minute, \
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diff changeset
261 self.second = TZ.localize(spec).utctimetuple()[:6]
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262 self.second += spec.microsecond/1000000.
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263 return
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diff changeset
264
47
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
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diff changeset
265 if type(spec) == type(''):
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266 self.set(spec, offset=offset, add_granularity=add_granularity)
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267 return
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268 elif hasattr(spec, 'tuple'):
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269 spec = spec.tuple()
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270 elif isinstance(spec, Date):
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271 spec = spec.get_tuple()
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272 try:
75
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diff changeset
273 y,m,d,H,M,S,x,x,x = spec
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diff changeset
274 frac = S - int(S)
25
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275 self.year, self.month, self.day, self.hour, self.minute, \
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276 self.second = _local_to_utc(y, m, d, H, M, S, offset)
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277 # we lost the fractional part
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278 self.second = self.second + frac
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279 if str(self.second) == '60.0': self.second = 59.9
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diff changeset
280 except:
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281 raise ValueError, 'Unknown spec %r' % (spec,)
25
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282
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283 def set(self, spec, offset=0, date_re=date_re,
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284 serialised_re=serialised_date_re, add_granularity=False):
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285 ''' set the date to the value in spec
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286 '''
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287
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288 m = serialised_re.match(spec)
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289 if m is not None:
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290 # we're serialised - easy!
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291 g = m.groups()
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292 (self.year, self.month, self.day, self.hour, self.minute) = \
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diff changeset
293 map(int, g[:5])
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294 self.second = float(g[5])
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295 return
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296
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297 # not serialised data, try usual format
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diff changeset
298 m = date_re.match(spec)
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diff changeset
299 if m is None:
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300 raise ValueError, self._('Not a date spec: '
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diff changeset
301 '"yyyy-mm-dd", "mm-dd", "HH:MM", "HH:MM:SS" or '
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diff changeset
302 '"yyyy-mm-dd.HH:MM:SS.SSS"')
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diff changeset
303
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diff changeset
304 info = m.groupdict()
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diff changeset
305
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306 # If add_granularity is true, construct the maximum time given
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diff changeset
307 # the precision of the input. For example, given the input
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diff changeset
308 # "12:15", construct "12:15:59". Or, for "2008", construct
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diff changeset
309 # "2008-12-31.23:59:59".
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diff changeset
310 if add_granularity:
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diff changeset
311 for gran in 'SMHdmy':
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diff changeset
312 if info[gran] is not None:
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diff changeset
313 if gran == 'S':
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diff changeset
314 raise ValueError
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diff changeset
315 elif gran == 'M':
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diff changeset
316 add_granularity = Interval('00:01')
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diff changeset
317 elif gran == 'H':
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diff changeset
318 add_granularity = Interval('01:00')
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diff changeset
319 else:
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diff changeset
320 add_granularity = Interval('+1%s'%gran)
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diff changeset
321 break
4072
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diff changeset
322 else:
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diff changeset
323 raise ValueError(self._('Could not determine granularity'))
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diff changeset
324
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325 # get the current date as our default
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diff changeset
326 dt = datetime.datetime.utcnow()
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diff changeset
327 y,m,d,H,M,S,x,x,x = dt.timetuple()
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diff changeset
328 S += dt.microsecond/1000000.
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diff changeset
329
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diff changeset
330 # whether we need to convert to UTC
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diff changeset
331 adjust = False
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diff changeset
332
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diff changeset
333 if info['y'] is not None or info['a'] is not None:
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diff changeset
334 if info['y'] is not None:
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diff changeset
335 y = int(info['y'])
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diff changeset
336 m,d = (1,1)
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diff changeset
337 if info['m'] is not None:
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diff changeset
338 m = int(info['m'])
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diff changeset
339 if info['d'] is not None:
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diff changeset
340 d = int(info['d'])
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parents: 1597
diff changeset
341 if info['a'] is not None:
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parents: 1597
diff changeset
342 m = int(info['a'])
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Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1597
diff changeset
343 d = int(info['b'])
3619
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diff changeset
344 H = 0
1535
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diff changeset
345 M = S = 0
3619
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diff changeset
346 adjust = True
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diff changeset
347
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diff changeset
348 # override hour, minute, second parts
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diff changeset
349 if info['H'] is not None and info['M'] is not None:
3619
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diff changeset
350 H = int(info['H'])
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diff changeset
351 M = int(info['M'])
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diff changeset
352 S = 0
2100
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diff changeset
353 if info['S'] is not None:
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diff changeset
354 S = float(info['S'])
3619
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diff changeset
355 adjust = True
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diff changeset
356
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
357
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diff changeset
358 # now handle the adjustment of hour
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diff changeset
359 frac = S - int(S)
3822
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Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
360 dt = datetime.datetime(y,m,d,H,M,int(S), int(frac * 1000000.))
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
361 y, m, d, H, M, S, x, x, x = dt.timetuple()
3619
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Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3612
diff changeset
362 if adjust:
df7bff6f8a2f full timezone support (based on patch [SF#1465296])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3612
diff changeset
363 y, m, d, H, M, S = _local_to_utc(y, m, d, H, M, S, offset)
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diff changeset
364 self.year, self.month, self.day, self.hour, self.minute, \
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diff changeset
365 self.second = y, m, d, H, M, S
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diff changeset
366 # we lost the fractional part along the way
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diff changeset
367 self.second += dt.microsecond/1000000.
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diff changeset
368
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Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
369 if info.get('o', None):
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
370 try:
1537
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Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
371 self.applyInterval(Interval(info['o'], allowdate=0))
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diff changeset
372 except ValueError:
3151
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diff changeset
373 raise ValueError, self._('%r not a date / time spec '
6feac4fcf883 Various bug fixes.
Richard Jones <richard@users.sourceforge.net>
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diff changeset
374 '"yyyy-mm-dd", "mm-dd", "HH:MM", "HH:MM:SS" or '
6feac4fcf883 Various bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 3028
diff changeset
375 '"yyyy-mm-dd.HH:MM:SS.SSS"')%(spec,)
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diff changeset
376
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diff changeset
377 # adjust by added granularity
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Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
378 if add_granularity:
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Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
379 self.applyInterval(add_granularity)
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Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
380 self.applyInterval(Interval('- 00:00:01'))
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parents: 3953
diff changeset
381
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
382 def addInterval(self, interval):
68cef2bb929d fixed the date module so that Date(". - 2d") works
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parents: 720
diff changeset
383 ''' Add the interval to this date, returning the date tuple
25
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parents:
diff changeset
384 '''
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
385 # do the basic calc
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
386 sign = interval.sign
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
387 year = self.year + sign * interval.year
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
388 month = self.month + sign * interval.month
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
389 day = self.day + sign * interval.day
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
390 hour = self.hour + sign * interval.hour
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
391 minute = self.minute + sign * interval.minute
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
392 # Intervals work on whole seconds
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
393 second = int(self.second) + sign * interval.second
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
394
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
395 # now cope with under- and over-flow
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
396 # first do the time
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
397 while (second < 0 or second > 59 or minute < 0 or minute > 59 or
1941
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
398 hour < 0 or hour > 23):
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
399 if second < 0: minute -= 1; second += 60
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
400 elif second > 59: minute += 1; second -= 60
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
401 if minute < 0: hour -= 1; minute += 60
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
402 elif minute > 59: hour += 1; minute -= 60
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
403 if hour < 0: day -= 1; hour += 24
1941
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
404 elif hour > 23: day += 1; hour -= 24
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
405
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
406 # fix up the month so we're within range
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
407 while month < 1 or month > 12:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
408 if month < 1: year -= 1; month += 12
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
409 if month > 12: year += 1; month -= 12
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
410
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
411 # now do the days, now that we know what month we're in
1941
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
412 def get_mdays(year, month):
1885
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
413 if month == 2 and calendar.isleap(year): return 29
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
414 else: return calendar.mdays[month]
1941
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
415
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
416 while month < 1 or month > 12 or day < 1 or day > get_mdays(year,month):
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
417 # now to day under/over
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
418 if day < 1:
1885
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
419 # When going backwards, decrement month, then increment days
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
420 month -= 1
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
421 day += get_mdays(year,month)
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
422 elif day > get_mdays(year,month):
1885
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
423 # When going forwards, decrement days, then increment month
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
424 day -= get_mdays(year,month)
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
425 month += 1
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
426
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
427 # possibly fix up the month so we're within range
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
428 while month < 1 or month > 12:
1885
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
429 if month < 1: year -= 1; month += 12 ; day += 31
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
430 if month > 12: year += 1; month -= 12
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
431
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
432 return (year, month, day, hour, minute, second, 0, 0, 0)
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
433
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
434 def differenceDate(self, other):
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
435 "Return the difference between this date and another date"
2189
d39068bc6ef9 implement differenceDate ;)
Richard Jones <richard@users.sourceforge.net>
parents: 2188
diff changeset
436 return self - other
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
437
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
438 def applyInterval(self, interval):
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
439 ''' Apply the interval to this date
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
440 '''
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
441 self.year, self.month, self.day, self.hour, self.minute, \
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
442 self.second, x, x, x = self.addInterval(interval)
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
443
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
444 def __add__(self, interval):
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
445 """Add an interval to this date to produce another date.
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
446 """
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
447 return Date(self.addInterval(interval), translator=self.translator)
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
448
1103
db787cef1385 handled some XXXs
Richard Jones <richard@users.sourceforge.net>
parents: 1094
diff changeset
449 # deviates from spec to allow subtraction of dates as well
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
450 def __sub__(self, other):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
451 """ Subtract:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
452 1. an interval from this date to produce another date.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
453 2. a date from this date to produce an interval.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
454 """
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
455 if isinstance(other, Interval):
1094
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
456 other = Interval(other.get_tuple())
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
457 other.sign *= -1
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
458 return self.__add__(other)
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
459
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
460 assert isinstance(other, Date), 'May only subtract Dates or Intervals'
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
461
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
462 return self.dateDelta(other)
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
463
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
464 def dateDelta(self, other):
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
465 """ Produce an Interval of the difference between this date
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
466 and another date. Only returns days:hours:minutes:seconds.
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
467 """
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
468 # Returning intervals larger than a day is almost
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
469 # impossible - months, years, weeks, are all so imprecise.
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
470 a = calendar.timegm((self.year, self.month, self.day, self.hour,
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
471 self.minute, self.second, 0, 0, 0))
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
472 b = calendar.timegm((other.year, other.month, other.day,
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
473 other.hour, other.minute, other.second, 0, 0, 0))
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
474 # intervals work in whole seconds
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
475 diff = int(a - b)
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
476 if diff > 0:
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
477 sign = 1
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
478 else:
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
479 sign = -1
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
480 diff = -diff
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
481 S = diff%60
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
482 M = (diff/60)%60
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
483 H = (diff/(60*60))%24
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
484 d = diff/(24*60*60)
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
485 return Interval((0, 0, d, H, M, S), sign=sign,
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
486 translator=self.translator)
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
487
2102
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
488 def __cmp__(self, other, int_seconds=0):
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
489 """Compare this date to another date."""
543
22e0edf7da6e lots of date/interval related changes: more relaxed date format for input
Richard Jones <richard@users.sourceforge.net>
parents: 501
diff changeset
490 if other is None:
22e0edf7da6e lots of date/interval related changes: more relaxed date format for input
Richard Jones <richard@users.sourceforge.net>
parents: 501
diff changeset
491 return 1
2102
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
492 for attr in ('year', 'month', 'day', 'hour', 'minute'):
890
a568596dbea7 Unit tests and a few fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 861
diff changeset
493 if not hasattr(other, attr):
a568596dbea7 Unit tests and a few fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 861
diff changeset
494 return 1
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
495 r = cmp(getattr(self, attr), getattr(other, attr))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
496 if r: return r
2102
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
497 if not hasattr(other, 'second'):
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
498 return 1
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
499 if int_seconds:
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
500 return cmp(int(self.second), int(other.second))
666402433998 Fix some tests.
Richard Jones <richard@users.sourceforge.net>
parents: 2100
diff changeset
501 return cmp(self.second, other.second)
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
502
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
503 def __str__(self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
504 """Return this date as a string in the yyyy-mm-dd.hh:mm:ss format."""
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
505 return self.formal()
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
506
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
507 def formal(self, sep='.', sec='%02d'):
3822
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
508 f = '%%04d-%%02d-%%02d%s%%02d:%%02d:%s'%(sep, sec)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
509 return f%(self.year, self.month, self.day, self.hour, self.minute,
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
510 self.second)
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
511
1272
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
512 def pretty(self, format='%d %B %Y'):
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
513 ''' print up the date date using a pretty format...
1272
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
514
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
515 Note that if the day is zero, and the day appears first in the
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
516 format, then the day number will be removed from output.
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
517 '''
3822
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
518 dt = datetime.datetime(self.year, self.month, self.day, self.hour,
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
519 self.minute, int(self.second),
3823
7cda5b4daa91 fix a deprecation warning if usecs passed to datetime constructor is a float.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3822
diff changeset
520 int ((self.second - int (self.second)) * 1000000.))
3822
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
521 str = dt.strftime(format)
3028
de242e68c69b fix py2.4 strftime() API change bug [SF#1087746]
Richard Jones <richard@users.sourceforge.net>
parents: 2981
diff changeset
522
1272
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
523 # handle zero day by removing it
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
524 if format.startswith('%d') and str[0] == '0':
cae50587fb96 expose the Date.pretty method to templating
Richard Jones <richard@users.sourceforge.net>
parents: 1268
diff changeset
525 return ' ' + str[1:]
585
c08fb4921eda %e is a UNIXism and not documented for Python
Jürgen Hermann <jhermann@users.sourceforge.net>
parents: 543
diff changeset
526 return str
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
527
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
528 def __repr__(self):
3612
afda59d5d546 prevent generation of new single-digit seconds dates [SF#1429390]
Richard Jones <richard@users.sourceforge.net>
parents: 3611
diff changeset
529 return '<Date %s>'%self.formal(sec='%06.3f')
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
530
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
531 def local(self, offset):
1318
46a1951fdb14 fix Date.local()
Richard Jones <richard@users.sourceforge.net>
parents: 1272
diff changeset
532 """ Return this date as yyyy-mm-dd.hh:mm:ss in a local time zone.
4422
ad7176d22f43 - add comment to clarify semantics if pytz is installed
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 4072
diff changeset
533 The offset is a pytz tz offset if pytz is installed.
1318
46a1951fdb14 fix Date.local()
Richard Jones <richard@users.sourceforge.net>
parents: 1272
diff changeset
534 """
3619
df7bff6f8a2f full timezone support (based on patch [SF#1465296])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3612
diff changeset
535 y, m, d, H, M, S = _utc_to_local(self.year, self.month, self.day,
df7bff6f8a2f full timezone support (based on patch [SF#1465296])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3612
diff changeset
536 self.hour, self.minute, self.second, offset)
df7bff6f8a2f full timezone support (based on patch [SF#1465296])
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3612
diff changeset
537 return Date((y, m, d, H, M, S, 0, 0, 0), translator=self.translator)
25
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parents:
diff changeset
538
2359
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
539 def __deepcopy__(self, memo):
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
540 return Date((self.year, self.month, self.day, self.hour,
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
541 self.minute, self.second, 0, 0, 0), translator=self.translator)
2359
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
542
47
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
543 def get_tuple(self):
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
544 return (self.year, self.month, self.day, self.hour, self.minute,
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
545 self.second, 0, 0, 0)
25
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parents:
diff changeset
546
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
547 def serialise(self):
3822
2a60b68985db Fix arbitrary limit on dates.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3798
diff changeset
548 return '%04d%02d%02d%02d%02d%06.3f'%(self.year, self.month,
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
549 self.day, self.hour, self.minute, self.second)
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
550
1946
c538a64b94a7 Refactored CGI file serving so that FileClass contents are...
Richard Jones <richard@users.sourceforge.net>
parents: 1941
diff changeset
551 def timestamp(self):
c538a64b94a7 Refactored CGI file serving so that FileClass contents are...
Richard Jones <richard@users.sourceforge.net>
parents: 1941
diff changeset
552 ''' return a UNIX timestamp for this date '''
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
553 frac = self.second - int(self.second)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
554 ts = calendar.timegm((self.year, self.month, self.day, self.hour,
1946
c538a64b94a7 Refactored CGI file serving so that FileClass contents are...
Richard Jones <richard@users.sourceforge.net>
parents: 1941
diff changeset
555 self.minute, self.second, 0, 0, 0))
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
556 # we lose the fractional part
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2005
diff changeset
557 return ts + frac
1946
c538a64b94a7 Refactored CGI file serving so that FileClass contents are...
Richard Jones <richard@users.sourceforge.net>
parents: 1941
diff changeset
558
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
559 def setTranslator(self, translator):
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
560 """Replace the translation engine
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
561
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
562 'translator'
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
563 is i18n module or one of gettext translation classes.
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
564 It must have attributes 'gettext' and 'ngettext',
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
565 serving as translation functions.
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
566 """
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
567 self.translator = translator
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
568 self._ = translator.gettext
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
569 self.ngettext = translator.ngettext
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
570
3825
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
571 def fromtimestamp(cls, ts):
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
572 """Create a date object from a timestamp.
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
573
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
574 The timestamp may be outside the gmtime year-range of
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
575 1902-2038.
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
576 """
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
577 usec = int((ts - int(ts)) * 1000000.)
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
578 delta = datetime.timedelta(seconds = int(ts), microseconds = usec)
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
579 return cls(datetime.datetime(1970, 1, 1) + delta)
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
580 fromtimestamp = classmethod(fromtimestamp)
f5bb1ad47268 Add a class-method as a constructor of a Date object from a timestamp.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3823
diff changeset
581
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
582 class Interval:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
583 '''
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
584 Date intervals are specified using the suffixes "y", "m", and "d". The
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
585 suffix "w" (for "week") means 7 days. Time intervals are specified in
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
586 hh:mm:ss format (the seconds may be omitted, but the hours and minutes
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
587 may not).
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
588
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
589 "3y" means three years
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
590 "2y 1m" means two years and one month
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
591 "1m 25d" means one month and 25 days
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
592 "2w 3d" means two weeks and three days
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
593 "1d 2:50" means one day, two hours, and 50 minutes
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
594 "14:00" means 14 hours
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
595 "0:04:33" means four minutes and 33 seconds
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
596
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parents:
diff changeset
597 Example usage:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
598 >>> Interval(" 3w 1 d 2:00")
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
599 <Interval + 22d 2:00>
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
600 >>> Date(". + 2d") + Interval("- 3w")
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
601 <Date 2000-06-07.00:34:02>
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
602 >>> Interval('1:59:59') + Interval('00:00:01')
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
603 <Interval + 2:00>
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
604 >>> Interval('2:00') + Interval('- 00:00:01')
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
605 <Interval + 1:59:59>
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
606 >>> Interval('1y')/2
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
607 <Interval + 6m>
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
608 >>> Interval('1:00')/2
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
609 <Interval + 0:30>
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
610 >>> Interval('2003-03-18')
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
611 <Interval + [number of days between now and 2003-03-18]>
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
612 >>> Interval('-4d 2003-03-18')
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
613 <Interval + [number of days between now and 2003-03-14]>
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
614
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
615 Interval arithmetic is handled in a couple of special ways, trying
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
616 to cater for the most common cases. Fundamentally, Intervals which
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
617 have both date and time parts will result in strange results in
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
618 arithmetic - because of the impossibility of handling day->month->year
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
619 over- and under-flows. Intervals may also be divided by some number.
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
620
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
621 Intervals are added to Dates in order of:
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
622 seconds, minutes, hours, years, months, days
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
623
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
624 Calculations involving months (eg '+2m') have no effect on days - only
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
625 days (or over/underflow from hours/mins/secs) will do that, and
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
626 days-per-month and leap years are accounted for. Leap seconds are not.
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
627
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
628 The interval format 'syyyymmddHHMMSS' (sign, year, month, day, hour,
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
629 minute, second) is the serialisation format returned by the serialise()
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
630 method, and is accepted as an argument on instatiation.
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
631
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
632 TODO: more examples, showing the order of addition operation
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
633 '''
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
634 def __init__(self, spec, sign=1, allowdate=1, add_granularity=False,
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
635 translator=i18n
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
636 ):
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
637 """Construct an interval given a specification."""
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
638 self.setTranslator(translator)
3349
9c65e32514aa types module delenda est
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 3231
diff changeset
639 if isinstance(spec, (int, float, long)):
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
640 self.from_seconds(spec)
3349
9c65e32514aa types module delenda est
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 3231
diff changeset
641 elif isinstance(spec, basestring):
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
642 self.set(spec, allowdate=allowdate, add_granularity=add_granularity)
2729
797725ec50c5 date.Interval() now accepts an Interval as a spec [SF#1041266]
Richard Jones <richard@users.sourceforge.net>
parents: 2702
diff changeset
643 elif isinstance(spec, Interval):
797725ec50c5 date.Interval() now accepts an Interval as a spec [SF#1041266]
Richard Jones <richard@users.sourceforge.net>
parents: 2702
diff changeset
644 (self.sign, self.year, self.month, self.day, self.hour,
797725ec50c5 date.Interval() now accepts an Interval as a spec [SF#1041266]
Richard Jones <richard@users.sourceforge.net>
parents: 2702
diff changeset
645 self.minute, self.second) = spec.get_tuple()
25
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Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
646 else:
1094
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
647 if len(spec) == 7:
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
648 self.sign, self.year, self.month, self.day, self.hour, \
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
649 self.minute, self.second = spec
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
650 self.second = int(self.second)
1094
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
651 else:
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
652 # old, buggy spec form
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
653 self.sign = sign
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
654 self.year, self.month, self.day, self.hour, self.minute, \
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
655 self.second = spec
2100
62ed6505cbec MySQL migration of old backend database to new, typed database complete.
Richard Jones <richard@users.sourceforge.net>
parents: 2098
diff changeset
656 self.second = int(self.second)
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
657
2359
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
658 def __deepcopy__(self, memo):
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
659 return Interval((self.sign, self.year, self.month, self.day,
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
660 self.hour, self.minute, self.second), translator=self.translator)
2359
8611bf29baec deepcopy was broken for date stuff
Richard Jones <richard@users.sourceforge.net>
parents: 2339
diff changeset
661
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
662 def set(self, spec, allowdate=1, interval_re=re.compile('''
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
663 \s*(?P<s>[-+])? # + or -
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
664 \s*((?P<y>\d+\s*)y)? # year
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
665 \s*((?P<m>\d+\s*)m)? # month
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
666 \s*((?P<w>\d+\s*)w)? # week
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
667 \s*((?P<d>\d+\s*)d)? # day
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
668 \s*(((?P<H>\d+):(?P<M>\d+))?(:(?P<S>\d+))?)? # time
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
669 \s*(?P<D>
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
670 (\d\d\d\d[/-])?(\d\d?)?[/-](\d\d?)? # [yyyy-]mm-dd
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
671 \.? # .
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
672 (\d?\d:\d\d)?(:\d\d)? # hh:mm:ss
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
673 )?''', re.VERBOSE), serialised_re=re.compile('''
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
674 (?P<s>[+-])?1?(?P<y>([ ]{3}\d|\d{4}))(?P<m>\d{2})(?P<d>\d{2})
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
675 (?P<H>\d{2})(?P<M>\d{2})(?P<S>\d{2})''', re.VERBOSE),
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
676 add_granularity=False):
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
677 ''' set the date to the value in spec
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
678 '''
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
679 self.year = self.month = self.week = self.day = self.hour = \
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
680 self.minute = self.second = 0
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
681 self.sign = 1
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
682 m = serialised_re.match(spec)
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
683 if not m:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
684 m = interval_re.match(spec)
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
685 if not m:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
686 raise ValueError, self._('Not an interval spec:'
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
687 ' [+-] [#y] [#m] [#w] [#d] [[[H]H:MM]:SS] [date spec]')
1542
3faabaeab6aa fixed date unserialisation for *dbm backends
Richard Jones <richard@users.sourceforge.net>
parents: 1537
diff changeset
688 else:
3faabaeab6aa fixed date unserialisation for *dbm backends
Richard Jones <richard@users.sourceforge.net>
parents: 1537
diff changeset
689 allowdate = 0
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
690
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
691 # pull out all the info specified
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
692 info = m.groupdict()
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
693 if add_granularity:
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
694 for gran in 'SMHdwmy':
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
695 if info[gran] is not None:
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
696 info[gran] = int(info[gran]) + (info['s']=='-' and -1 or 1)
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
697 break
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
698
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
699 valid = 0
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
700 for group, attr in {'y':'year', 'm':'month', 'w':'week', 'd':'day',
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
701 'H':'hour', 'M':'minute', 'S':'second'}.items():
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
702 if info.get(group, None) is not None:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
703 valid = 1
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
704 setattr(self, attr, int(info[group]))
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
705
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
706 # make sure it's valid
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
707 if not valid and not info['D']:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
708 raise ValueError, self._('Not an interval spec:'
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
709 ' [+-] [#y] [#m] [#w] [#d] [[[H]H:MM]:SS]')
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
710
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
711 if self.week:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
712 self.day = self.day + self.week*7
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
713
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
714 if info['s'] is not None:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
715 self.sign = {'+':1, '-':-1}[info['s']]
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
716
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
717 # use a date spec if one is given
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
718 if allowdate and info['D'] is not None:
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
719 now = Date('.')
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
720 date = Date(info['D'])
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
721 # if no time part was specified, nuke it in the "now" date
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
722 if not date.hour or date.minute or date.second:
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
723 now.hour = now.minute = now.second = 0
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
724 if date != now:
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
725 y = now - (date + self)
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
726 self.__init__(y.get_tuple())
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
727
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
728 def __cmp__(self, other):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
729 """Compare this interval to another interval."""
4461
5f82173d1684 Simplify and fix interval comparison.
Stefan Seefeld <stefan@seefeld.name>
parents: 4422
diff changeset
730
4465
605f31a596b8 Simplify and fix interval comparison.
Stefan Seefeld <stefan@seefeld.name>
parents: 4461
diff changeset
731 if other is None:
605f31a596b8 Simplify and fix interval comparison.
Stefan Seefeld <stefan@seefeld.name>
parents: 4461
diff changeset
732 # we are always larger than None
605f31a596b8 Simplify and fix interval comparison.
Stefan Seefeld <stefan@seefeld.name>
parents: 4461
diff changeset
733 return 1
4461
5f82173d1684 Simplify and fix interval comparison.
Stefan Seefeld <stefan@seefeld.name>
parents: 4422
diff changeset
734 return cmp(self.as_seconds(), other.as_seconds())
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
735
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
736 def __str__(self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
737 """Return this interval as a string."""
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
738 l = []
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
739 if self.year: l.append('%sy'%self.year)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
740 if self.month: l.append('%sm'%self.month)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
741 if self.day: l.append('%sd'%self.day)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
742 if self.second:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
743 l.append('%d:%02d:%02d'%(self.hour, self.minute, self.second))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
744 elif self.hour or self.minute:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
745 l.append('%d:%02d'%(self.hour, self.minute))
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
746 if l:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
747 l.insert(0, {1:'+', -1:'-'}[self.sign])
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
748 else:
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
749 l.append('00:00')
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
750 return ' '.join(l)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
751
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
752 def __add__(self, other):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
753 if isinstance(other, Date):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
754 # the other is a Date - produce a Date
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
755 return Date(other.addInterval(self), translator=self.translator)
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
756 elif isinstance(other, Interval):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
757 # add the other Interval to this one
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
758 a = self.get_tuple()
3702
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
759 asgn = a[0]
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
760 b = other.get_tuple()
3702
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
761 bsgn = b[0]
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
762 i = [asgn*x + bsgn*y for x,y in zip(a[1:],b[1:])]
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
763 i.insert(0, 1)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
764 i = fixTimeOverflow(i)
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
765 return Interval(i, translator=self.translator)
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
766 # nope, no idea what to do with this other...
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
767 raise TypeError, "Can't add %r"%other
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
768
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
769 def __sub__(self, other):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
770 if isinstance(other, Date):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
771 # the other is a Date - produce a Date
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
772 interval = Interval(self.get_tuple())
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
773 interval.sign *= -1
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
774 return Date(other.addInterval(interval),
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
775 translator=self.translator)
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
776 elif isinstance(other, Interval):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
777 # add the other Interval to this one
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
778 a = self.get_tuple()
3702
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
779 asgn = a[0]
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
780 b = other.get_tuple()
3702
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
781 bsgn = b[0]
06d7816976bc python 2.6 compatibility
Richard Jones <richard@users.sourceforge.net>
parents: 3619
diff changeset
782 i = [asgn*x - bsgn*y for x,y in zip(a[1:],b[1:])]
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
783 i.insert(0, 1)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
784 i = fixTimeOverflow(i)
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
785 return Interval(i, translator=self.translator)
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
786 # nope, no idea what to do with this other...
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
787 raise TypeError, "Can't add %r"%other
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
788
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
789 def __div__(self, other):
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
790 """ Divide this interval by an int value.
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
791
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
792 Can't divide years and months sensibly in the _same_
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
793 calculation as days/time, so raise an error in that situation.
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
794 """
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
795 try:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
796 other = float(other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
797 except TypeError:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
798 raise ValueError, "Can only divide Intervals by numbers"
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
799
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
800 y, m, d, H, M, S = (self.year, self.month, self.day,
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
801 self.hour, self.minute, self.second)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
802 if y or m:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
803 if d or H or M or S:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
804 raise ValueError, "Can't divide Interval with date and time"
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
805 months = self.year*12 + self.month
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
806 months *= self.sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
807
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
808 months = int(months/other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
809
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
810 sign = months<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
811 m = months%12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
812 y = months / 12
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
813 return Interval((sign, y, m, 0, 0, 0, 0),
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
814 translator=self.translator)
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
815
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
816 else:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
817 # handle a day/time division
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
818 seconds = S + M*60 + H*60*60 + d*60*60*24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
819 seconds *= self.sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
820
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
821 seconds = int(seconds/other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
822
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
823 sign = seconds<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
824 seconds *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
825 S = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
826 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
827 M = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
828 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
829 H = seconds%24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
830 d = seconds / 24
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
831 return Interval((sign, 0, 0, d, H, M, S),
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
832 translator=self.translator)
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
833
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
834 def __repr__(self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
835 return '<Interval %s>'%self.__str__()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
836
487
2f4c37d28108 I18N'ification
Richard Jones <richard@users.sourceforge.net>
parents: 406
diff changeset
837 def pretty(self):
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
838 ''' print up the date date using one of these nice formats..
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
839 '''
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
840 _quarters = self.minute / 15
720
5e0a75bfdd90 reverting to dates for intervals > 2 months sucks
Richard Jones <richard@users.sourceforge.net>
parents: 641
diff changeset
841 if self.year:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
842 s = self.ngettext("%(number)s year", "%(number)s years",
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
843 self.year) % {'number': self.year}
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
844 elif self.month or self.day > 28:
2416
Richard Jones <richard@users.sourceforge.net>
parents: 2402
diff changeset
845 _months = max(1, int(((self.month * 30) + self.day) / 30))
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
846 s = self.ngettext("%(number)s month", "%(number)s months",
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
847 _months) % {'number': _months}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
848 elif self.day > 7:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
849 _weeks = int(self.day / 7)
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
850 s = self.ngettext("%(number)s week", "%(number)s weeks",
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
851 _weeks) % {'number': _weeks}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
852 elif self.day > 1:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
853 # Note: singular form is not used
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
854 s = self.ngettext('%(number)s day', '%(number)s days',
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
855 self.day) % {'number': self.day}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
856 elif self.day == 1 or self.hour > 12:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
857 if self.sign > 0:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
858 return self._('tomorrow')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
859 else:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
860 return self._('yesterday')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
861 elif self.hour > 1:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
862 # Note: singular form is not used
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
863 s = self.ngettext('%(number)s hour', '%(number)s hours',
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
864 self.hour) % {'number': self.hour}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
865 elif self.hour == 1:
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
866 if self.minute < 15:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
867 s = self._('an hour')
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
868 elif _quarters == 2:
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
869 s = self._('1 1/2 hours')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
870 else:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
871 s = self.ngettext('1 %(number)s/4 hours',
2416
Richard Jones <richard@users.sourceforge.net>
parents: 2402
diff changeset
872 '1 %(number)s/4 hours', _quarters)%{'number': _quarters}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
873 elif self.minute < 1:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
874 if self.sign > 0:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
875 return self._('in a moment')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
876 else:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
877 return self._('just now')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
878 elif self.minute == 1:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
879 # Note: used in expressions "in 1 minute" or "1 minute ago"
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
880 s = self._('1 minute')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
881 elif self.minute < 15:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
882 # Note: used in expressions "in 2 minutes" or "2 minutes ago"
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
883 s = self.ngettext('%(number)s minute', '%(number)s minutes',
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
884 self.minute) % {'number': self.minute}
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
885 elif _quarters == 2:
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
886 s = self._('1/2 an hour')
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
887 else:
2416
Richard Jones <richard@users.sourceforge.net>
parents: 2402
diff changeset
888 s = self.ngettext('%(number)s/4 hour', '%(number)s/4 hours',
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
889 _quarters) % {'number': _quarters}
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
890 # XXX this is internationally broken
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
891 if self.sign < 0:
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
892 s = self._('%s ago') % s
1413
4ae9d725bec4 make future intervals obvious too
Richard Jones <richard@users.sourceforge.net>
parents: 1412
diff changeset
893 else:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
894 s = self._('in %s') % s
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
895 return s
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
896
47
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
897 def get_tuple(self):
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
898 return (self.sign, self.year, self.month, self.day, self.hour,
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
899 self.minute, self.second)
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
900
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
901 def serialise(self):
1261
85d71588a1cf fixed bug in Interval serialisation
Richard Jones <richard@users.sourceforge.net>
parents: 1192
diff changeset
902 sign = self.sign > 0 and '+' or '-'
85d71588a1cf fixed bug in Interval serialisation
Richard Jones <richard@users.sourceforge.net>
parents: 1192
diff changeset
903 return '%s%04d%02d%02d%02d%02d%02d'%(sign, self.year, self.month,
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
904 self.day, self.hour, self.minute, self.second)
47
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
905
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
906 def as_seconds(self):
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
907 '''Calculate the Interval as a number of seconds.
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
908
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
909 Months are counted as 30 days, years as 365 days. Returns a Long
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
910 int.
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
911 '''
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
912 n = self.year * 365L
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
913 n = n + self.month * 30
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
914 n = n + self.day
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
915 n = n * 24
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
916 n = n + self.hour
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
917 n = n * 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
918 n = n + self.minute
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
919 n = n * 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
920 n = n + self.second
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
921 return n * self.sign
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
922
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
923 def from_seconds(self, val):
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
924 '''Figure my second, minute, hour and day values using a seconds
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
925 value.
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
926 '''
2981
ad04cb95e2b0 fix Interval.from_seconds() with float argument
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2729
diff changeset
927 val = int(val)
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
928 if val < 0:
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
929 self.sign = -1
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
930 val = -val
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
931 else:
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
932 self.sign = 1
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
933 self.second = val % 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
934 val = val / 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
935 self.minute = val % 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
936 val = val / 60
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
937 self.hour = val % 24
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
938 val = val / 24
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
939 self.day = val
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
940 self.month = self.year = 0
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
941
2388
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
942 def setTranslator(self, translator):
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
943 """Replace the translation engine
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
944
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
945 'translator'
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
946 is i18n module or one of gettext translation classes.
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
947 It must have attributes 'gettext' and 'ngettext',
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
948 serving as translation functions.
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
949 """
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
950 self.translator = translator
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
951 self._ = translator.gettext
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
952 self.ngettext = translator.ngettext
8a9af227a557 Date and Interval objects allow to change translator after instance creation...
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2359
diff changeset
953
2212
75e46660345c stop Interval from displaying an empty string [SF#934022]
Richard Jones <richard@users.sourceforge.net>
parents: 2189
diff changeset
954
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
955 def fixTimeOverflow(time):
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
956 """ Handle the overflow in the time portion (H, M, S) of "time":
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
957 (sign, y,m,d,H,M,S)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
958
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
959 Overflow and underflow will at most affect the _days_ portion of
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
960 the date. We do not overflow days to months as we don't know _how_
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
961 to, generally.
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
962 """
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
963 # XXX we could conceivably use this function for handling regular dates
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
964 # XXX too - we just need to interrogate the month/year for the day
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
965 # XXX overflow...
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
966
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
967 sign, y, m, d, H, M, S = time
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
968 seconds = sign * (S + M*60 + H*60*60 + d*60*60*24)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
969 if seconds:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
970 sign = seconds<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
971 seconds *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
972 S = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
973 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
974 M = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
975 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
976 H = seconds%24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
977 d = seconds / 24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
978 else:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
979 months = y*12 + m
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
980 sign = months<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
981 months *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
982 m = months%12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
983 y = months/12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
984
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
985 return (sign, y, m, d, H, M, S)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
986
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
987 class Range:
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
988 """Represents range between two values
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
989 Ranges can be created using one of theese two alternative syntaxes:
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
990
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
991 1. Native english syntax::
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
992
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
993 [[From] <value>][ To <value>]
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
994
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
995 Keywords "From" and "To" are case insensitive. Keyword "From" is
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
996 optional.
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
997
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
998 2. "Geek" syntax::
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
999
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
1000 [<value>][; <value>]
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1001
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1002 Either first or second <value> can be omitted in both syntaxes.
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1003
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
1004 Examples (consider local time is Sat Mar 8 22:07:48 EET 2003)::
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
1005
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1006 >>> Range("from 2-12 to 4-2")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1007 <Range from 2003-02-12.00:00:00 to 2003-04-02.00:00:00>
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1008
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1009 >>> Range("18:00 TO +2m")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1010 <Range from 2003-03-08.18:00:00 to 2003-05-08.20:07:48>
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1011
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1012 >>> Range("12:00")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1013 <Range from 2003-03-08.12:00:00 to None>
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1014
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1015 >>> Range("tO +3d")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1016 <Range from None to 2003-03-11.20:07:48>
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1017
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1018 >>> Range("2002-11-10; 2002-12-12")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1019 <Range from 2002-11-10.00:00:00 to 2002-12-12.00:00:00>
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1020
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1021 >>> Range("; 20:00 +1d")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1022 <Range from None to 2003-03-09.20:00:00>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1023
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1024 """
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1025 def __init__(self, spec, Type, allow_granularity=True, **params):
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1026 """Initializes Range of type <Type> from given <spec> string.
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1027
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1028 Sets two properties - from_value and to_value. None assigned to any of
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1029 this properties means "infinitum" (-infinitum to from_value and
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1030 +infinitum to to_value)
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1031
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1032 The Type parameter here should be class itself (e.g. Date), not a
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1033 class instance.
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1034 """
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1035 self.range_type = Type
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1036 re_range = r'(?:^|from(.+?))(?:to(.+?)$|$)'
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1037 re_geek_range = r'(?:^|(.+?));(?:(.+?)$|$)'
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1038 # Check which syntax to use
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1039 if ';' in spec:
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1040 # Geek
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1041 m = re.search(re_geek_range, spec.strip())
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1042 else:
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1043 # Native english
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1044 m = re.search(re_range, spec.strip(), re.IGNORECASE)
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1045 if m:
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1046 self.from_value, self.to_value = m.groups()
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1047 if self.from_value:
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1048 self.from_value = Type(self.from_value.strip(), **params)
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1049 if self.to_value:
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
1050 self.to_value = Type(self.to_value.strip(), **params)
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1051 else:
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1052 if allow_granularity:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1053 self.from_value = Type(spec, **params)
3954
3d5a0a949107 Fix granularity stuff so it handles wrapping a lot better.
Richard Jones <richard@users.sourceforge.net>
parents: 3953
diff changeset
1054 self.to_value = Type(spec, add_granularity=True, **params)
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1055 else:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1056 raise ValueError, "Invalid range"
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1057
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1058 def __str__(self):
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1059 return "from %s to %s" % (self.from_value, self.to_value)
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1060
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1061 def __repr__(self):
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1062 return "<Range %s>" % self.__str__()
2339
6ba57546d212 fix i18n - mainly plural forms in Interval.pretty()
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2262
diff changeset
1063
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1064 def test_range():
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1065 rspecs = ("from 2-12 to 4-2", "from 18:00 TO +2m", "12:00;", "tO +3d",
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1066 "2002-11-10; 2002-12-12", "; 20:00 +1d", '2002-10-12')
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1067 rispecs = ('from -1w 2d 4:32 to 4d', '-2w 1d')
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1068 for rspec in rspecs:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1069 print '>>> Range("%s")' % rspec
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1070 print `Range(rspec, Date)`
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
1071 print
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1072 for rspec in rispecs:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1073 print '>>> Range("%s")' % rspec
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1074 print `Range(rspec, Interval)`
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1075 print
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1076
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1077 def test():
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1078 intervals = (" 3w 1 d 2:00", " + 2d", "3w")
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1079 for interval in intervals:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1080 print '>>> Interval("%s")'%interval
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1081 print `Interval(interval)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1082
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1083 dates = (".", "2000-06-25.19:34:02", ". + 2d", "1997-04-17", "01-25",
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1084 "08-13.22:13", "14:25", '2002-12')
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1085 for date in dates:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1086 print '>>> Date("%s")'%date
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1087 print `Date(date)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1088
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1089 sums = ((". + 2d", "3w"), (".", " 3w 1 d 2:00"))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1090 for date, interval in sums:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1091 print '>>> Date("%s") + Interval("%s")'%(date, interval)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1092 print `Date(date) + Interval(interval)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1093
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1094 if __name__ == '__main__':
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
1095 test()
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
1096
3210
ea29d69f7415 fix error message formatting in Date.__init__;
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 3151
diff changeset
1097 # vim: set filetype=python sts=4 sw=4 et si :
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