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annotate sat/tools/common/date_utils.py @ 3983:31c3d6652115

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component AP gateway: ignore actor delection notifications: When a `Delete` activity was received and the object was the emitting actor itself, the signature checking was failing if the actor was unknown (due to the impossibility to retrieve the actor public key, as it is no more accessible). To avoid that, those notifications are ignored for now. In the future they should clean the cache linked to this actor.
author Goffi <goffi@goffi.org>
date Tue, 15 Nov 2022 18:15:16 +0100
parents 92482cc80d0b
children 883db2790b11
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rev   line source
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1 #!/usr/bin/env python3
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2
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 """tools to help manipulating time and dates"""
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21
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22 from typing import Union
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23 import calendar
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24 import datetime
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25 import re
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26 import time
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27
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28 from babel import dates
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29 from dateutil import parser, tz
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30 from dateutil.parser import ParserError
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31 from dateutil.relativedelta import relativedelta
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32 from dateutil.utils import default_tzinfo
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33
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34 from sat.core import exceptions
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35 from sat.core.constants import Const as C
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36 from sat.core.i18n import _
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37
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38 RELATIVE_RE = re.compile(
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39 r"\s*(?P<in>\bin\b)?"
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40 r"(?P<date>[^+-].+[^\s+-])?\s*(?P<direction>[-+])?\s*"
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41 r"\s*(?P<quantity>\d+)\s*"
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42 r"(?P<unit>(second|sec|s|minute|min|month|mo|m|hour|hr|h|day|d|week|w|year|yr|y))s?"
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43 r"(?P<ago>\s+ago)?\s*",
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44 re.I
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45 )
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46 TIME_SYMBOL_MAP = {
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47 "s": "second",
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48 "sec": "second",
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49 "m": "minute",
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50 "min": "minute",
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51 "h": "hour",
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52 "hr": "hour",
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53 "d": "day",
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54 "w": "week",
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55 "mo": "month",
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56 "y": "year",
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57 "yr": "year",
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58 }
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59 YEAR_FIRST_RE = re.compile(r"\d{4}[^\d]+")
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60 TZ_UTC = tz.tzutc()
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61 TZ_LOCAL = tz.gettz()
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63
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64 def date_parse(value, default_tz=TZ_UTC):
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65 """Parse a date and return corresponding unix timestamp
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66
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67 @param value(unicode): date to parse, in any format supported by parser
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68 @param default_tz(datetime.tzinfo): default timezone
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69 @return (int): timestamp
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70 """
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71 value = str(value).strip()
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72 dayfirst = False if YEAR_FIRST_RE.match(value) else True
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73
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74 try:
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75 dt = default_tzinfo(
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76 parser.parse(value, dayfirst=dayfirst),
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77 default_tz)
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78 except ParserError as e:
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79 if value == "now":
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80 dt = datetime.datetime.now(tz.tzutc())
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81 else:
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82 try:
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83 # the date may already be a timestamp
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84 return int(value)
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85 except ValueError:
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86 raise e
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87 return calendar.timegm(dt.utctimetuple())
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88
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89 def date_parse_ext(value, default_tz=TZ_UTC):
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90 """Extended date parse which accept relative date
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91
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92 @param value(unicode): date to parse, in any format supported by parser
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93 and with the hability to specify X days/weeks/months/years in the past or future.
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94 Relative date are specified either with something like `[main_date] +1 week`
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95 or with something like `3 days ago`, and it is case insensitive. [main_date] is
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96 a date parsable by parser, or empty to specify current date/time.
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97 "now" can also be used to specify current date/time.
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98 @param default_tz(datetime.tzinfo): same as for date_parse
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99 @return (int): timestamp
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100 """
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101 m = RELATIVE_RE.match(value)
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102 if m is None:
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103 return date_parse(value, default_tz=default_tz)
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104
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105 if sum(1 for g in ("direction", "in", "ago") if m.group(g)) > 1:
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106 raise ValueError(
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107 _('You can use only one of direction (+ or -), "in" and "ago"'))
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108
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109 if m.group("direction") == '-' or m.group("ago"):
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110 direction = -1
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111 else:
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112 direction = 1
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113
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114 date = m.group("date")
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115 if date is not None:
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116 date = date.strip()
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117 if not date or date == "now":
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118 dt = datetime.datetime.now(tz.tzutc())
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119 else:
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120 try:
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121 dt = default_tzinfo(parser.parse(date, dayfirst=True), default_tz)
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122 except ParserError as e:
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123 try:
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124 timestamp = int(date)
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125 except ValueError:
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126 raise e
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127 else:
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128 dt = datetime.datetime.fromtimestamp(timestamp, tz.tzutc())
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129
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130 quantity = int(m.group("quantity"))
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131 unit = m.group("unit").lower()
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132 try:
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133 unit = TIME_SYMBOL_MAP[unit]
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134 except KeyError:
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135 pass
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136 delta_kw = {f"{unit}s": direction * quantity}
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137 dt = dt + relativedelta(**delta_kw)
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138 return calendar.timegm(dt.utctimetuple())
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139
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140
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141 def date_fmt(timestamp, fmt="short", date_only=False, auto_limit=7, auto_old_fmt="short",
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142 auto_new_fmt="relative", locale_str=C.DEFAULT_LOCALE, tz_info=TZ_UTC):
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143 """format date according to locale
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144
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145 @param timestamp(basestring, float): unix time
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146 @param fmt(str): one of:
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147 - short: e.g. u'31/12/17'
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148 - medium: e.g. u'Apr 1, 2007'
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149 - long: e.g. u'April 1, 2007'
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150 - full: e.g. u'Sunday, April 1, 2007'
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151 - relative: format in relative time
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152 e.g.: 3 hours
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153 note that this format is not precise
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154 - iso: ISO 8601 format
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155 e.g.: u'2007-04-01T19:53:23Z'
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156 - auto: use auto_old_fmt if date is older than auto_limit
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157 else use auto_new_fmt
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158 - auto_day: shorcut to set auto format with change on day
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159 old format will be short, and new format will be time only
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160 or a free value which is passed to babel.dates.format_datetime
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161 (see http://babel.pocoo.org/en/latest/dates.html?highlight=pattern#pattern-syntax)
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162 @param date_only(bool): if True, only display date (not datetime)
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163 @param auto_limit (int): limit in days before using auto_old_fmt
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164 use 0 to have a limit at last midnight (day change)
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165 @param auto_old_fmt(unicode): format to use when date is older than limit
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166 @param auto_new_fmt(unicode): format to use when date is equal to or more recent
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167 than limit
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168 @param locale_str(unicode): locale to use (as understood by babel)
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169 @param tz_info(datetime.tzinfo): time zone to use
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170
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171 """
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172 timestamp = float(timestamp)
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173 if fmt == "auto_day":
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174 fmt, auto_limit, auto_old_fmt, auto_new_fmt = "auto", 0, "short", "HH:mm"
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175 if fmt == "auto":
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176 if auto_limit == 0:
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177 now = datetime.datetime.now(tz_info)
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178 # we want to use given tz_info, so we don't use date() or today()
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179 today = datetime.datetime(year=now.year, month=now.month, day=now.day,
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180 tzinfo=now.tzinfo)
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181 today = calendar.timegm(today.utctimetuple())
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182 if timestamp < today:
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183 fmt = auto_old_fmt
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184 else:
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185 fmt = auto_new_fmt
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186 else:
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187 days_delta = (time.time() - timestamp) / 3600
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188 if days_delta > (auto_limit or 7):
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189 fmt = auto_old_fmt
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190 else:
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191 fmt = auto_new_fmt
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192
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193 if fmt == "relative":
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194 delta = timestamp - time.time()
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195 return dates.format_timedelta(
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196 delta, granularity="minute", add_direction=True, locale=locale_str
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197 )
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198 elif fmt in ("short", "long", "full"):
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199 if date_only:
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200 dt = datetime.datetime.fromtimestamp(timestamp, tz_info)
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201 return dates.format_date(dt, format=fmt, locale=locale_str)
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202 else:
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203 return dates.format_datetime(timestamp, format=fmt, locale=locale_str,
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204 tzinfo=tz_info)
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205 elif fmt == "iso":
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206 if date_only:
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207 fmt = "yyyy-MM-dd"
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208 else:
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209 fmt = "yyyy-MM-ddTHH:mm:ss'Z'"
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210 return dates.format_datetime(timestamp, format=fmt)
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211 else:
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212 return dates.format_datetime(timestamp, format=fmt, locale=locale_str,
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213 tzinfo=tz_info)
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214
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215
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216 def delta2human(start_ts: Union[float, int], end_ts: Union[float, int]) -> str:
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217 """Convert delta of 2 unix times to human readable text
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218
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219 @param start_ts: timestamp of starting time
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220 @param end_ts: timestamp of ending time
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221 """
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222 if end_ts < start_ts:
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223 raise exceptions.InternalError(
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224 "end timestamp must be bigger or equal to start timestamp !"
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225 )
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226 rd = relativedelta(
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227 datetime.datetime.fromtimestamp(end_ts),
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228 datetime.datetime.fromtimestamp(start_ts)
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229 )
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
230 text_elems = []
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
231 for unit in ("years", "months", "days", "hours", "minutes"):
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
232 value = getattr(rd, unit)
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
233 if value == 1:
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
234 # we remove final "s" when there is only 1
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
235 text_elems.append(f"1 {unit[:-1]}")
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
236 elif value > 1:
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
237 text_elems.append(f"{value} {unit}")
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
238
92482cc80d0b tools (common/date_utils) handle timestamp and `in` + `delta2human`:
Goffi <goffi@goffi.org>
parents: 3631
diff changeset
239 return ", ".join(text_elems)