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annotate roundup/date.py @ 2052:78e6a1e4984e

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forward-port from maint branch
author Richard Jones <richard@users.sourceforge.net>
date Wed, 25 Feb 2004 23:27:54 +0000
parents fc52d57c6c3e
children 18addf2a8596
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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 1.60 2004-02-11 23:55:08 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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23
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24 import time, re, calendar, types
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25 from i18n import _
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26
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27 def _add_granularity(src, order, value = 1):
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28 '''Increment first non-None value in src dictionary ordered by 'order'
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29 parameter
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30 '''
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31 for gran in order:
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32 if src[gran]:
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33 src[gran] = int(src[gran]) + value
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34 break
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35
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36 class Date:
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37 '''
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38 As strings, date-and-time stamps are specified with the date in
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39 international standard format (yyyy-mm-dd) joined to the time
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40 (hh:mm:ss) by a period ("."). Dates in this form can be easily compared
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41 and are fairly readable when printed. An example of a valid stamp is
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42 "2000-06-24.13:03:59". We'll call this the "full date format". When
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43 Timestamp objects are printed as strings, they appear in the full date
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44 format with the time always given in GMT. The full date format is
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45 always exactly 19 characters long.
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46
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47 For user input, some partial forms are also permitted: the whole time
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48 or just the seconds may be omitted; and the whole date may be omitted
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49 or just the year may be omitted. If the time is given, the time is
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50 interpreted in the user's local time zone. The Date constructor takes
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51 care of these conversions. In the following examples, suppose that yyyy
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52 is the current year, mm is the current month, and dd is the current day
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53 of the month; and suppose that the user is on Eastern Standard Time.
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54 Examples::
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55
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56 "2000-04-17" means <Date 2000-04-17.00:00:00>
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57 "01-25" means <Date yyyy-01-25.00:00:00>
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58 "2000-04-17.03:45" means <Date 2000-04-17.08:45:00>
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59 "08-13.22:13" means <Date yyyy-08-14.03:13:00>
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60 "11-07.09:32:43" means <Date yyyy-11-07.14:32:43>
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61 "14:25" means <Date yyyy-mm-dd.19:25:00>
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62 "8:47:11" means <Date yyyy-mm-dd.13:47:11>
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63 "2003" means <Date 2003-01-01.00:00:00>
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64 "2003-06" means <Date 2003-06-01.00:00:00>
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65 "." means "right now"
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66
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67 The Date class should understand simple date expressions of the form
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68 stamp + interval and stamp - interval. When adding or subtracting
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69 intervals involving months or years, the components are handled
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70 separately. For example, when evaluating "2000-06-25 + 1m 10d", we
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71 first add one month to get 2000-07-25, then add 10 days to get
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72 2000-08-04 (rather than trying to decide whether 1m 10d means 38 or 40
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73 or 41 days). Example usage::
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74
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75 >>> Date(".")
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76 <Date 2000-06-26.00:34:02>
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77 >>> _.local(-5)
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78 "2000-06-25.19:34:02"
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79 >>> Date(". + 2d")
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80 <Date 2000-06-28.00:34:02>
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81 >>> Date("1997-04-17", -5)
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82 <Date 1997-04-17.00:00:00>
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83 >>> Date("01-25", -5)
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84 <Date 2000-01-25.00:00:00>
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85 >>> Date("08-13.22:13", -5)
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86 <Date 2000-08-14.03:13:00>
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87 >>> Date("14:25", -5)
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88 <Date 2000-06-25.19:25:00>
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89
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90 The date format 'yyyymmddHHMMSS' (year, month, day, hour,
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91 minute, second) is the serialisation format returned by the serialise()
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92 method, and is accepted as an argument on instatiation.
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93 '''
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94
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95 def __init__(self, spec='.', offset=0, add_granularity=0):
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96 """Construct a date given a specification and a time zone offset.
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97
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98 'spec'
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99 is a full date or a partial form, with an optional added or
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100 subtracted interval. Or a date 9-tuple.
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101 'offset'
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102 is the local time zone offset from GMT in hours.
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103 """
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104 if type(spec) == type(''):
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105 self.set(spec, offset=offset, add_granularity=add_granularity)
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106 else:
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107 y,m,d,H,M,S,x,x,x = spec
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108 ts = calendar.timegm((y,m,d,H+offset,M,S,0,0,0))
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109 self.year, self.month, self.day, self.hour, self.minute, \
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110 self.second, x, x, x = time.gmtime(ts)
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111
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112 usagespec='[yyyy]-[mm]-[dd].[H]H:MM[:SS][offset]'
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113 def set(self, spec, offset=0, date_re=re.compile(r'''
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114 ((?P<y>\d\d\d\d)([/-](?P<m>\d\d?)([/-](?P<d>\d\d?))?)? # yyyy[-mm[-dd]]
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115 |(?P<a>\d\d?)[/-](?P<b>\d\d?))? # or mm-dd
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116 (?P<n>\.)? # .
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117 (((?P<H>\d?\d):(?P<M>\d\d))?(:(?P<S>\d\d))?)? # hh:mm:ss
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118 (?P<o>.+)? # offset
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119 ''', re.VERBOSE), serialised_re=re.compile(r'''
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120 (\d{4})(\d\d)(\d\d)(\d\d)(\d\d)(\d\d)
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121 ''', re.VERBOSE), add_granularity=0):
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122 ''' set the date to the value in spec
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123 '''
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124
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125 m = serialised_re.match(spec)
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126 if m is not None:
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127 # we're serialised - easy!
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128 self.year, self.month, self.day, self.hour, self.minute, \
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129 self.second = map(int, m.groups()[:6])
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130 return
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131
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132 # not serialised data, try usual format
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133 m = date_re.match(spec)
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134 if m is None:
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135 raise ValueError, _('Not a date spec: %s' % self.usagespec)
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136
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diff changeset
137 info = m.groupdict()
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138
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139 if add_granularity:
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140 _add_granularity(info, 'SMHdmyab')
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141
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142 # get the current date as our default
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143 y,m,d,H,M,S,x,x,x = time.gmtime(time.time())
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144
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145 if info['y'] is not None or info['a'] is not None:
1535
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diff changeset
146 if info['y'] is not None:
26f29449c494 fixed detection of bad date specs [SF#691439]
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147 y = int(info['y'])
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148 m,d = (1,1)
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149 if info['m'] is not None:
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150 m = int(info['m'])
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151 if info['d'] is not None:
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152 d = int(info['d'])
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153 if info['a'] is not None:
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154 m = int(info['a'])
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155 d = int(info['b'])
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diff changeset
156 H = -offset
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157 M = S = 0
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158
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159 # override hour, minute, second parts
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160 if info['H'] is not None and info['M'] is not None:
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161 H = int(info['H']) - offset
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diff changeset
162 M = int(info['M'])
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diff changeset
163 S = 0
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
164 if info['S'] is not None: S = int(info['S'])
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
165
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diff changeset
166 if add_granularity:
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Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
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167 S = S - 1
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parents: 1542
diff changeset
168
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169 # now handle the adjustment of hour
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parents: 1509
diff changeset
170 ts = calendar.timegm((y,m,d,H,M,S,0,0,0))
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
171 self.year, self.month, self.day, self.hour, self.minute, \
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
172 self.second, x, x, x = time.gmtime(ts)
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diff changeset
173
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
174 if info.get('o', None):
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
175 try:
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
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parents: 1535
diff changeset
176 self.applyInterval(Interval(info['o'], allowdate=0))
1535
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diff changeset
177 except ValueError:
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diff changeset
178 raise ValueError, _('Not a date spec: %s' % self.usagespec)
1535
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179
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diff changeset
180 def addInterval(self, interval):
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181 ''' Add the interval to this date, returning the date tuple
25
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182 '''
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diff changeset
183 # do the basic calc
861
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diff changeset
184 sign = interval.sign
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diff changeset
185 year = self.year + sign * interval.year
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diff changeset
186 month = self.month + sign * interval.month
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diff changeset
187 day = self.day + sign * interval.day
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diff changeset
188 hour = self.hour + sign * interval.hour
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parents: 720
diff changeset
189 minute = self.minute + sign * interval.minute
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diff changeset
190 second = self.second + sign * interval.second
640
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diff changeset
191
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diff changeset
192 # now cope with under- and over-flow
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193 # first do the time
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parents: 585
diff changeset
194 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]
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parents: 1930
diff changeset
195 hour < 0 or hour > 23):
640
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196 if second < 0: minute -= 1; second += 60
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197 elif second > 59: minute += 1; second -= 60
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diff changeset
198 if minute < 0: hour -= 1; minute += 60
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diff changeset
199 elif minute > 59: hour += 1; minute -= 60
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
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diff changeset
200 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
201 elif hour > 23: day += 1; hour -= 24
640
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parents: 585
diff changeset
202
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diff changeset
203 # fix up the month so we're within range
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Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
204 while month < 1 or month > 12:
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Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
205 if month < 1: year -= 1; month += 12
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parents: 585
diff changeset
206 if month > 12: year += 1; month -= 12
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diff changeset
207
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
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diff changeset
208 # 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]
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parents: 1930
diff changeset
209 def get_mdays(year, month):
1885
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diff changeset
210 if month == 2 and calendar.isleap(year): return 29
deba54ed724f Date arithmetic fixes.
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parents: 1600
diff changeset
211 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
212
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
Richard Jones <richard@users.sourceforge.net>
parents: 1930
diff changeset
213 while month < 1 or month > 12 or day < 1 or day > get_mdays(year,month):
640
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parents: 585
diff changeset
214 # now to day under/over
1941
bcc65c5b86e6 fixed date arithmetic to not allow day-of-month == 0 [SF#853306]
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parents: 1930
diff changeset
215 if day < 1:
1885
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parents: 1600
diff changeset
216 # When going backwards, decrement month, then increment days
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parents: 1600
diff changeset
217 month -= 1
deba54ed724f Date arithmetic fixes.
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diff changeset
218 day += get_mdays(year,month)
deba54ed724f Date arithmetic fixes.
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parents: 1600
diff changeset
219 elif day > get_mdays(year,month):
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parents: 1600
diff changeset
220 # When going forwards, decrement days, then increment month
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
221 day -= get_mdays(year,month)
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
222 month += 1
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
223
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
224 # 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
225 while month < 1 or month > 12:
1885
deba54ed724f Date arithmetic fixes.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1600
diff changeset
226 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
227 if month > 12: year += 1; month -= 12
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
228
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
229 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
230
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
231 def differenceDate(self, other):
41ad8b781232 Date - Date works again.
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parents: 1885
diff changeset
232 "Return the difference between this date and another date"
41ad8b781232 Date - Date works again.
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parents: 1885
diff changeset
233
861
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
234 def applyInterval(self, interval):
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
235 ''' 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
236 '''
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
237 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
238 self.second, x, x, x = self.addInterval(interval)
68cef2bb929d fixed the date module so that Date(". - 2d") works
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parents: 720
diff changeset
239
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
240 def __add__(self, interval):
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
241 """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
242 """
68cef2bb929d fixed the date module so that Date(". - 2d") works
Richard Jones <richard@users.sourceforge.net>
parents: 720
diff changeset
243 return Date(self.addInterval(interval))
25
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parents:
diff changeset
244
1103
db787cef1385 handled some XXXs
Richard Jones <richard@users.sourceforge.net>
parents: 1094
diff changeset
245 # deviates from spec to allow subtraction of dates as well
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
246 def __sub__(self, other):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
247 """ Subtract:
4cf1daf2f2eb More Grande Splite
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parents:
diff changeset
248 1. an interval from this date to produce another date.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
249 2. a date from this date to produce an interval.
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
250 """
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
251 if isinstance(other, Interval):
1094
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
252 other = Interval(other.get_tuple())
854d45f8b745 fixes to tests and Interval unmarshalling
Richard Jones <richard@users.sourceforge.net>
parents: 1090
diff changeset
253 other.sign *= -1
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
254 return self.__add__(other)
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
255
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
256 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
257
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
258 return self.dateDelta(other)
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
259
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
260 def dateDelta(self, other):
41ad8b781232 Date - Date works again.
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parents: 1885
diff changeset
261 """ Produce an Interval of the difference between this date
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
262 and another date. Only returns days:hours:minutes:seconds.
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
263 """
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
264 # Returning intervals larger than a day is almost
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
265 # 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
266 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
267 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
268 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
269 other.hour, other.minute, other.second, 0, 0, 0))
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
270 diff = a - b
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
271 if diff > 0:
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
272 sign = 1
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
273 else:
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
274 sign = -1
1894
41ad8b781232 Date - Date works again.
Anthony Baxter <anthonybaxter@users.sourceforge.net>
parents: 1885
diff changeset
275 diff = -diff
641
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
276 S = diff%60
cfa460943d4d Oops, there's 24 hours in a day...
Richard Jones <richard@users.sourceforge.net>
parents: 640
diff changeset
277 M = (diff/60)%60
1894
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278 H = (diff/(60*60))%24
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279 d = diff/(24*60*60)
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280 return Interval((0, 0, d, H, M, S), sign=sign)
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281
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282 def __cmp__(self, other):
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283 """Compare this date to another date."""
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284 if other is None:
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285 return 1
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286 for attr in ('year', 'month', 'day', 'hour', 'minute', 'second'):
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287 if not hasattr(other, attr):
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288 return 1
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289 r = cmp(getattr(self, attr), getattr(other, attr))
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290 if r: return r
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291 return 0
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292
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293 def __str__(self):
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294 """Return this date as a string in the yyyy-mm-dd.hh:mm:ss format."""
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295 return '%4d-%02d-%02d.%02d:%02d:%02d'%(self.year, self.month, self.day,
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296 self.hour, self.minute, self.second)
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297
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298 def pretty(self, format='%d %B %Y'):
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299 ''' print up the date date using a pretty format...
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300
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301 Note that if the day is zero, and the day appears first in the
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302 format, then the day number will be removed from output.
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303 '''
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304 str = time.strftime(format, (self.year, self.month, self.day,
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305 self.hour, self.minute, self.second, 0, 0, 0))
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306 # handle zero day by removing it
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307 if format.startswith('%d') and str[0] == '0':
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308 return ' ' + str[1:]
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309 return str
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310
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311 def __repr__(self):
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312 return '<Date %s>'%self.__str__()
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313
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314 def local(self, offset):
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315 """ Return this date as yyyy-mm-dd.hh:mm:ss in a local time zone.
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316 """
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317 return Date((self.year, self.month, self.day, self.hour + offset,
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318 self.minute, self.second, 0, 0, 0))
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319
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320 def get_tuple(self):
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321 return (self.year, self.month, self.day, self.hour, self.minute,
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322 self.second, 0, 0, 0)
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323
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324 def serialise(self):
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325 return '%4d%02d%02d%02d%02d%02d'%(self.year, self.month,
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326 self.day, self.hour, self.minute, self.second)
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327
1946
c538a64b94a7 Refactored CGI file serving so that FileClass contents are...
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328 def timestamp(self):
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329 ''' return a UNIX timestamp for this date '''
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330 return calendar.timegm((self.year, self.month, self.day, self.hour,
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331 self.minute, self.second, 0, 0, 0))
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332
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333 class Interval:
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334 '''
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335 Date intervals are specified using the suffixes "y", "m", and "d". The
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336 suffix "w" (for "week") means 7 days. Time intervals are specified in
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337 hh:mm:ss format (the seconds may be omitted, but the hours and minutes
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338 may not).
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339
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340 "3y" means three years
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341 "2y 1m" means two years and one month
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342 "1m 25d" means one month and 25 days
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343 "2w 3d" means two weeks and three days
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344 "1d 2:50" means one day, two hours, and 50 minutes
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345 "14:00" means 14 hours
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346 "0:04:33" means four minutes and 33 seconds
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347
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348 Example usage:
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349 >>> Interval(" 3w 1 d 2:00")
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350 <Interval + 22d 2:00>
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351 >>> Date(". + 2d") + Interval("- 3w")
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352 <Date 2000-06-07.00:34:02>
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353 >>> Interval('1:59:59') + Interval('00:00:01')
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354 <Interval + 2:00>
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355 >>> Interval('2:00') + Interval('- 00:00:01')
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356 <Interval + 1:59:59>
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357 >>> Interval('1y')/2
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358 <Interval + 6m>
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359 >>> Interval('1:00')/2
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360 <Interval + 0:30>
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361 >>> Interval('2003-03-18')
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362 <Interval + [number of days between now and 2003-03-18]>
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363 >>> Interval('-4d 2003-03-18')
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364 <Interval + [number of days between now and 2003-03-14]>
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diff changeset
365
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366 Interval arithmetic is handled in a couple of special ways, trying
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367 to cater for the most common cases. Fundamentally, Intervals which
37a1906f4454 fixed Interval maths [SF#665357]
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diff changeset
368 have both date and time parts will result in strange results in
37a1906f4454 fixed Interval maths [SF#665357]
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diff changeset
369 arithmetic - because of the impossibility of handling day->month->year
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diff changeset
370 over- and under-flows. Intervals may also be divided by some number.
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diff changeset
371
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diff changeset
372 Intervals are added to Dates in order of:
640
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parents: 585
diff changeset
373 seconds, minutes, hours, years, months, days
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parents: 585
diff changeset
374
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diff changeset
375 Calculations involving months (eg '+2m') have no effect on days - only
640
7dd13fd5d8ea fixed some problems in date calculations
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parents: 585
diff changeset
376 days (or over/underflow from hours/mins/secs) will do that, and
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parents: 585
diff changeset
377 days-per-month and leap years are accounted for. Leap seconds are not.
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parents: 585
diff changeset
378
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diff changeset
379 The interval format 'syyyymmddHHMMSS' (sign, year, month, day, hour,
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380 minute, second) is the serialisation format returned by the serialise()
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diff changeset
381 method, and is accepted as an argument on instatiation.
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diff changeset
382
640
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diff changeset
383 TODO: more examples, showing the order of addition operation
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384 '''
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385 def __init__(self, spec, sign=1, allowdate=1, add_granularity=0):
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386 """Construct an interval given a specification."""
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387 if type(spec) == type(''):
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388 self.set(spec, allowdate=allowdate, add_granularity=add_granularity)
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389 else:
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diff changeset
390 if len(spec) == 7:
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diff changeset
391 self.sign, self.year, self.month, self.day, self.hour, \
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diff changeset
392 self.minute, self.second = spec
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diff changeset
393 else:
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diff changeset
394 # old, buggy spec form
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395 self.sign = sign
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396 self.year, self.month, self.day, self.hour, self.minute, \
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397 self.second = spec
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398
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diff changeset
399 def set(self, spec, allowdate=1, interval_re=re.compile('''
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diff changeset
400 \s*(?P<s>[-+])? # + or -
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diff changeset
401 \s*((?P<y>\d+\s*)y)? # year
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diff changeset
402 \s*((?P<m>\d+\s*)m)? # month
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parents: 1509
diff changeset
403 \s*((?P<w>\d+\s*)w)? # week
26f29449c494 fixed detection of bad date specs [SF#691439]
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parents: 1509
diff changeset
404 \s*((?P<d>\d+\s*)d)? # day
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parents: 1509
diff changeset
405 \s*(((?P<H>\d+):(?P<M>\d+))?(:(?P<S>\d+))?)? # time
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
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diff changeset
406 \s*(?P<D>
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diff changeset
407 (\d\d\d\d[/-])?(\d\d?)?[/-](\d\d?)? # [yyyy-]mm-dd
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parents: 1535
diff changeset
408 \.? # .
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parents: 1535
diff changeset
409 (\d?\d:\d\d)?(:\d\d)? # hh:mm:ss
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parents: 1535
diff changeset
410 )?''', re.VERBOSE), serialised_re=re.compile('''
1535
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parents: 1509
diff changeset
411 (?P<s>[+-])?1?(?P<y>([ ]{3}\d|\d{4}))(?P<m>\d{2})(?P<d>\d{2})
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Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
412 (?P<H>\d{2})(?P<M>\d{2})(?P<S>\d{2})''', re.VERBOSE),
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Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
413 add_granularity=0):
1535
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parents: 1509
diff changeset
414 ''' 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
415 '''
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
416 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
417 self.minute = self.second = 0
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
418 self.sign = 1
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
419 m = serialised_re.match(spec)
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
420 if not m:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
421 m = interval_re.match(spec)
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
422 if not m:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
423 raise ValueError, _('Not an interval spec: [+-] [#y] [#m] [#w] '
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
424 '[#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
425 else:
3faabaeab6aa fixed date unserialisation for *dbm backends
Richard Jones <richard@users.sourceforge.net>
parents: 1537
diff changeset
426 allowdate = 0
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
427
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
428 # 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
429 info = m.groupdict()
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
430 if add_granularity:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
431 _add_granularity(info, 'SMHdwmy', (info['s']=='-' and -1 or 1))
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
432
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
433 valid = 0
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
434 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
435 '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
436 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
437 valid = 1
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
438 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
439
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
440 # 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
441 if not valid and not info['D']:
1535
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
442 raise ValueError, _('Not an interval spec: [+-] [#y] [#m] [#w] '
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
443 '[#d] [[[H]H:MM]:SS]')
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
444
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
445 if self.week:
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
446 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
447
26f29449c494 fixed detection of bad date specs [SF#691439]
Richard Jones <richard@users.sourceforge.net>
parents: 1509
diff changeset
448 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
449 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
450
1537
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
451 # 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
452 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
453 now = Date('.')
0e36c9b23aa6 more lenient date input and addition Interval input support [SF#677764]
Richard Jones <richard@users.sourceforge.net>
parents: 1535
diff changeset
454 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
455 # 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
456 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
457 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
458 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
459 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
460 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
461
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
462 def __cmp__(self, other):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
463 """Compare this interval to another interval."""
543
22e0edf7da6e lots of date/interval related changes: more relaxed date format for input
Richard Jones <richard@users.sourceforge.net>
parents: 501
diff changeset
464 if other is None:
1505
c101d2ff5a20 fix to [SF#691071], really this time
Richard Jones <richard@users.sourceforge.net>
parents: 1499
diff changeset
465 # we are always larger than None
543
22e0edf7da6e lots of date/interval related changes: more relaxed date format for input
Richard Jones <richard@users.sourceforge.net>
parents: 501
diff changeset
466 return 1
1494
66cc5c2819dd oops, Interval sorting ignored sign
Richard Jones <richard@users.sourceforge.net>
parents: 1487
diff changeset
467 for attr in 'sign year month day hour minute second'.split():
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
468 r = cmp(getattr(self, attr), getattr(other, attr))
1494
66cc5c2819dd oops, Interval sorting ignored sign
Richard Jones <richard@users.sourceforge.net>
parents: 1487
diff changeset
469 if r:
66cc5c2819dd oops, Interval sorting ignored sign
Richard Jones <richard@users.sourceforge.net>
parents: 1487
diff changeset
470 return r
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
471 return 0
964
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
472
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
473 def __str__(self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
474 """Return this interval as a string."""
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
475 l = []
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
476 if self.year: l.append('%sy'%self.year)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
477 if self.month: l.append('%sm'%self.month)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
478 if self.day: l.append('%sd'%self.day)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
479 if self.second:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
480 l.append('%d:%02d:%02d'%(self.hour, self.minute, self.second))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
481 elif self.hour or self.minute:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
482 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
483 if l:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
484 l.insert(0, {1:'+', -1:'-'}[self.sign])
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
485 return ' '.join(l)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
486
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
487 def __add__(self, other):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
488 if isinstance(other, Date):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
489 # the other is a Date - produce a Date
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
490 return Date(other.addInterval(self))
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
491 elif isinstance(other, Interval):
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
492 # add the other Interval to this one
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
493 a = self.get_tuple()
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
494 as = a[0]
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
495 b = other.get_tuple()
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
496 bs = b[0]
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
497 i = [as*x + bs*y for x,y in zip(a[1:],b[1:])]
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
498 i.insert(0, 1)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
499 i = fixTimeOverflow(i)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
500 return Interval(i)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
501 # 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
502 raise TypeError, "Can't add %r"%other
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
503
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
504 def __sub__(self, other):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
505 if isinstance(other, Date):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
506 # the other is a Date - produce a Date
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
507 interval = Interval(self.get_tuple())
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
508 interval.sign *= -1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
509 return Date(other.addInterval(interval))
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
510 elif isinstance(other, Interval):
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
511 # add the other Interval to this one
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
512 a = self.get_tuple()
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
513 as = a[0]
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
514 b = other.get_tuple()
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
515 bs = b[0]
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
516 i = [as*x - bs*y for x,y in zip(a[1:],b[1:])]
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
517 i.insert(0, 1)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
518 i = fixTimeOverflow(i)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
519 return Interval(i)
1268
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
520 # 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
521 raise TypeError, "Can't add %r"%other
b34adc9bcaf2 implemented the missing Interval.__add__
Richard Jones <richard@users.sourceforge.net>
parents: 1266
diff changeset
522
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
523 def __div__(self, other):
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
524 """ Divide this interval by an int value.
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
525
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
526 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
527 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
528 """
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
529 try:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
530 other = float(other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
531 except TypeError:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
532 raise ValueError, "Can only divide Intervals by numbers"
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
533
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
534 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
535 self.hour, self.minute, self.second)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
536 if y or m:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
537 if d or H or M or S:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
538 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
539 months = self.year*12 + self.month
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
540 months *= self.sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
541
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
542 months = int(months/other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
543
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
544 sign = months<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
545 m = months%12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
546 y = months / 12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
547 return Interval((sign, y, m, 0, 0, 0, 0))
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
548
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
549 else:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
550 # handle a day/time division
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
551 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
552 seconds *= self.sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
553
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
554 seconds = int(seconds/other)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
555
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
556 sign = seconds<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
557 seconds *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
558 S = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
559 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
560 M = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
561 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
562 H = seconds%24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
563 d = seconds / 24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
564 return Interval((sign, 0, 0, d, H, M, S))
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
565
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
566 def __repr__(self):
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
567 return '<Interval %s>'%self.__str__()
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
568
487
2f4c37d28108 I18N'ification
Richard Jones <richard@users.sourceforge.net>
parents: 406
diff changeset
569 def pretty(self):
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
570 ''' print up the date date using one of these nice formats..
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
571 '''
720
5e0a75bfdd90 reverting to dates for intervals > 2 months sucks
Richard Jones <richard@users.sourceforge.net>
parents: 641
diff changeset
572 if self.year:
5e0a75bfdd90 reverting to dates for intervals > 2 months sucks
Richard Jones <richard@users.sourceforge.net>
parents: 641
diff changeset
573 if self.year == 1:
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
574 s = _('1 year')
720
5e0a75bfdd90 reverting to dates for intervals > 2 months sucks
Richard Jones <richard@users.sourceforge.net>
parents: 641
diff changeset
575 else:
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
576 s = _('%(number)s years')%{'number': self.year}
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
577 elif self.month or self.day > 13:
179
a44c70b25369 Extended the range of intervals that are pretty-printed...
Richard Jones <richard@users.sourceforge.net>
parents: 168
diff changeset
578 days = (self.month * 30) + self.day
a44c70b25369 Extended the range of intervals that are pretty-printed...
Richard Jones <richard@users.sourceforge.net>
parents: 168
diff changeset
579 if days > 28:
248
96cdd8ef0581 Added some more help to roundup-admin
Richard Jones <richard@users.sourceforge.net>
parents: 234
diff changeset
580 if int(days/30) > 1:
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
581 s = _('%(number)s months')%{'number': int(days/30)}
248
96cdd8ef0581 Added some more help to roundup-admin
Richard Jones <richard@users.sourceforge.net>
parents: 234
diff changeset
582 else:
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
583 s = _('1 month')
179
a44c70b25369 Extended the range of intervals that are pretty-printed...
Richard Jones <richard@users.sourceforge.net>
parents: 168
diff changeset
584 else:
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
585 s = _('%(number)s weeks')%{'number': int(days/7)}
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
586 elif self.day > 7:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
587 s = _('1 week')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
588 elif self.day > 1:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
589 s = _('%(number)s days')%{'number': self.day}
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
590 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
591 if self.sign > 0:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
592 return _('tomorrow')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
593 else:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
594 return _('yesterday')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
595 elif self.hour > 1:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
596 s = _('%(number)s hours')%{'number': self.hour}
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
597 elif self.hour == 1:
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
598 if self.minute < 15:
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
599 s = _('an hour')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
600 elif self.minute/15 == 2:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
601 s = _('1 1/2 hours')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
602 else:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
603 s = _('1 %(number)s/4 hours')%{'number': self.minute/15}
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
604 elif self.minute < 1:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
605 if self.sign > 0:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
606 return _('in a moment')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
607 else:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
608 return _('just now')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
609 elif self.minute == 1:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
610 s = _('1 minute')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
611 elif self.minute < 15:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
612 s = _('%(number)s minutes')%{'number': self.minute}
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
613 elif int(self.minute/15) == 2:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
614 s = _('1/2 an hour')
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
615 else:
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
616 s = _('%(number)s/4 hour')%{'number': int(self.minute/15)}
1412
e5fb7d4bf251 add "ago" to intervals in the past [SF#679232]
Richard Jones <richard@users.sourceforge.net>
parents: 1339
diff changeset
617 if self.sign < 0:
e5fb7d4bf251 add "ago" to intervals in the past [SF#679232]
Richard Jones <richard@users.sourceforge.net>
parents: 1339
diff changeset
618 s = s + _(' ago')
1413
4ae9d725bec4 make future intervals obvious too
Richard Jones <richard@users.sourceforge.net>
parents: 1412
diff changeset
619 else:
1600
2047425bf7e7 [SF#724626]
Richard Jones <richard@users.sourceforge.net>
parents: 1599
diff changeset
620 s = _('in ') + s
640
7dd13fd5d8ea fixed some problems in date calculations
Richard Jones <richard@users.sourceforge.net>
parents: 585
diff changeset
621 return s
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
622
47
34491d9b91a0 Storing only marshallable data in the db - no nasty pickled class references.
Richard Jones <richard@users.sourceforge.net>
parents: 26
diff changeset
623 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
624 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
625 self.minute, self.second)
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
626
832d1209aaa2 Preparing to turn back on link/unlink journal events.
Richard Jones <richard@users.sourceforge.net>
parents: 890
diff changeset
627 def serialise(self):
1261
85d71588a1cf fixed bug in Interval serialisation
Richard Jones <richard@users.sourceforge.net>
parents: 1192
diff changeset
628 sign = self.sign > 0 and '+' or '-'
85d71588a1cf fixed bug in Interval serialisation
Richard Jones <richard@users.sourceforge.net>
parents: 1192
diff changeset
629 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
630 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
631
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
632 def fixTimeOverflow(time):
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
633 """ 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
634 (sign, y,m,d,H,M,S)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
635
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
636 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
637 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
638 to, generally.
1930
71056b09f2bf Add tests for Interval.pretty().
Johannes Gijsbers <jlgijsbers@users.sourceforge.net>
parents: 1894
diff changeset
639 """
1487
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
640 # 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
641 # 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
642 # XXX overflow...
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
643
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
644 sign, y, m, d, H, M, S = time
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
645 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
646 if seconds:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
647 sign = seconds<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
648 seconds *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
649 S = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
650 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
651 M = seconds%60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
652 seconds /= 60
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
653 H = seconds%24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
654 d = seconds / 24
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
655 else:
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
656 months = y*12 + m
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
657 sign = months<0 and -1 or 1
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
658 months *= sign
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
659 m = months%12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
660 y = months/12
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
661
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
662 return (sign, y, m, d, H, M, S)
37a1906f4454 fixed Interval maths [SF#665357]
Richard Jones <richard@users.sourceforge.net>
parents: 1463
diff changeset
663
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
664 class Range:
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
665 """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
666 Ranges can be created using one of theese two alternative syntaxes:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
667
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
668 1. Native english syntax::
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
669
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
670 [[From] <value>][ To <value>]
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
671
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
672 Keywords "From" and "To" are case insensitive. Keyword "From" is
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
673 optional.
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
674
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
675 2. "Geek" syntax::
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
676
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
677 [<value>][; <value>]
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
678
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
679 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
680
2005
fc52d57c6c3e documentation cleanup
Richard Jones <richard@users.sourceforge.net>
parents: 1946
diff changeset
681 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
682
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
683 >>> 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
684 <Range from 2003-02-12.00:00:00 to 2003-04-02.00:00:00>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
685
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
686 >>> Range("18:00 TO +2m")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
687 <Range from 2003-03-08.18:00:00 to 2003-05-08.20:07:48>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
688
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
689 >>> Range("12:00")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
690 <Range from 2003-03-08.12:00:00 to None>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
691
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
692 >>> Range("tO +3d")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
693 <Range from None to 2003-03-11.20:07:48>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
694
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
695 >>> 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
696 <Range from 2002-11-10.00:00:00 to 2002-12-12.00:00:00>
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
697
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
698 >>> Range("; 20:00 +1d")
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
699 <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
700
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
701 """
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
702 def __init__(self, spec, Type, allow_granularity=1, **params):
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
703 """Initializes Range of type <Type> from given <spec> string.
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
704
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
705 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
706 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
707 +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
708
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
709 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
710 class instance.
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
711
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
712 """
1509
1d4ebe2a88fc hope this will make Range class a little bit clearer
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1505
diff changeset
713 self.range_type = Type
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
714 re_range = r'(?:^|from(.+?))(?:to(.+?)$|$)'
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
715 re_geek_range = r'(?:^|(.+?));(?:(.+?)$|$)'
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
716 # Check which syntax to use
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
717 if spec.find(';') == -1:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
718 # Native english
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
719 mch_range = re.search(re_range, spec.strip(), re.IGNORECASE)
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
720 else:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
721 # Geek
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
722 mch_range = re.search(re_geek_range, spec.strip())
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
723 if mch_range:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
724 self.from_value, self.to_value = mch_range.groups()
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
725 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
726 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
727 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
728 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
729 else:
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
730 if allow_granularity:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
731 self.from_value = Type(spec, **params)
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
732 self.to_value = Type(spec, add_granularity=1, **params)
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
733 else:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
734 raise ValueError, "Invalid range"
1499
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
735
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
736 def __str__(self):
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
737 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
738
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
739 def __repr__(self):
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
740 return "<Range %s>" % self.__str__()
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
741
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
742 def test_range():
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
743 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
744 "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
745 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
746 for rspec in rspecs:
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
747 print '>>> Range("%s")' % rspec
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
748 print `Range(rspec, Date)`
8ee69708da0c added support for searching on ranges of dates
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1494
diff changeset
749 print
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
750 for rspec in rispecs:
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
751 print '>>> Range("%s")' % rspec
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
752 print `Range(rspec, Interval)`
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
753 print
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
754
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
755 def test():
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
756 intervals = (" 3w 1 d 2:00", " + 2d", "3w")
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
757 for interval in intervals:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
758 print '>>> Interval("%s")'%interval
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
759 print `Interval(interval)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
760
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
761 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
762 "08-13.22:13", "14:25", '2002-12')
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
763 for date in dates:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
764 print '>>> Date("%s")'%date
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
765 print `Date(date)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
766
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
767 sums = ((". + 2d", "3w"), (".", " 3w 1 d 2:00"))
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
768 for date, interval in sums:
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
769 print '>>> Date("%s") + Interval("%s")'%(date, interval)
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
770 print `Date(date) + Interval(interval)`
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
771
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
772 if __name__ == '__main__':
1597
4d55f90d4af1 granularity based ranges
Andrey Lebedev <kedder@users.sourceforge.net>
parents: 1542
diff changeset
773 test()
25
4cf1daf2f2eb More Grande Splite
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
774
127
0791d13baea7 Added vim command to all source so that we don't get no steenkin' tabs :)
Richard Jones <richard@users.sourceforge.net>
parents: 75
diff changeset
775 # vim: set filetype=python ts=4 sw=4 et si
Roundup Issue Tracker: http://roundup-tracker.org/