root / snf-astakos-app / astakos / im / templatetags / filters.py @ 84d26d62
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1 | ebd369d0 | Sofia Papagiannaki | # Copyright 2011-2012 GRNET S.A. All rights reserved.
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2 | ebd369d0 | Sofia Papagiannaki | #
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3 | ebd369d0 | Sofia Papagiannaki | # Redistribution and use in source and binary forms, with or
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4 | ebd369d0 | Sofia Papagiannaki | # without modification, are permitted provided that the following
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5 | ebd369d0 | Sofia Papagiannaki | # conditions are met:
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6 | ebd369d0 | Sofia Papagiannaki | #
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7 | ebd369d0 | Sofia Papagiannaki | # 1. Redistributions of source code must retain the above
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8 | ebd369d0 | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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9 | ebd369d0 | Sofia Papagiannaki | # disclaimer.
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10 | ebd369d0 | Sofia Papagiannaki | #
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11 | ebd369d0 | Sofia Papagiannaki | # 2. Redistributions in binary form must reproduce the above
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12 | ebd369d0 | Sofia Papagiannaki | # copyright notice, this list of conditions and the following
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13 | ebd369d0 | Sofia Papagiannaki | # disclaimer in the documentation and/or other materials
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14 | ebd369d0 | Sofia Papagiannaki | # provided with the distribution.
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15 | ebd369d0 | Sofia Papagiannaki | #
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16 | ebd369d0 | Sofia Papagiannaki | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | ebd369d0 | Sofia Papagiannaki | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | ebd369d0 | Sofia Papagiannaki | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | ebd369d0 | Sofia Papagiannaki | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | ebd369d0 | Sofia Papagiannaki | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | ebd369d0 | Sofia Papagiannaki | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | ebd369d0 | Sofia Papagiannaki | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | ebd369d0 | Sofia Papagiannaki | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | ebd369d0 | Sofia Papagiannaki | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | ebd369d0 | Sofia Papagiannaki | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | ebd369d0 | Sofia Papagiannaki | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | ebd369d0 | Sofia Papagiannaki | # POSSIBILITY OF SUCH DAMAGE.
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28 | ebd369d0 | Sofia Papagiannaki | #
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29 | ebd369d0 | Sofia Papagiannaki | # The views and conclusions contained in the software and
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30 | ebd369d0 | Sofia Papagiannaki | # documentation are those of the authors and should not be
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31 | ebd369d0 | Sofia Papagiannaki | # interpreted as representing official policies, either expressed
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32 | ebd369d0 | Sofia Papagiannaki | # or implied, of GRNET S.A.
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33 | ebd369d0 | Sofia Papagiannaki | |
34 | 5056da3d | Olga Brani | import calendar |
35 | 5056da3d | Olga Brani | import datetime |
36 | 5841646f | Olga Brani | import math |
37 | ebd369d0 | Sofia Papagiannaki | |
38 | dfdc64d2 | Sofia Papagiannaki | from collections import defaultdict |
39 | dfdc64d2 | Sofia Papagiannaki | |
40 | d220292f | Sofia Papagiannaki | from django import template |
41 | 25b51727 | Sofia Papagiannaki | from django.core.paginator import Paginator, EmptyPage |
42 | 2c4b2a96 | Sofia Papagiannaki | from django.db.models.query import QuerySet |
43 | d220292f | Sofia Papagiannaki | |
44 | 5841646f | Olga Brani | |
45 | d220292f | Sofia Papagiannaki | from astakos.im.settings import PAGINATE_BY |
46 | d220292f | Sofia Papagiannaki | |
47 | 5841646f | Olga Brani | |
48 | ebd369d0 | Sofia Papagiannaki | register = template.Library() |
49 | ebd369d0 | Sofia Papagiannaki | |
50 | 661c4479 | Sofia Papagiannaki | DELIM = ','
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51 | 661c4479 | Sofia Papagiannaki | |
52 | 9a06d96f | Olga Brani | |
53 | 5056da3d | Olga Brani | @register.filter
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54 | 5056da3d | Olga Brani | def monthssince(joined_date): |
55 | 5056da3d | Olga Brani | now = datetime.datetime.now() |
56 | 9a06d96f | Olga Brani | date = datetime.datetime( |
57 | 9a06d96f | Olga Brani | year=joined_date.year, month=joined_date.month, day=1)
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58 | 5056da3d | Olga Brani | months = [] |
59 | 9a06d96f | Olga Brani | |
60 | 5056da3d | Olga Brani | month = date.month |
61 | 5056da3d | Olga Brani | year = date.year |
62 | 9a06d96f | Olga Brani | timestamp = calendar.timegm(date.utctimetuple()) |
63 | 9a06d96f | Olga Brani | |
64 | 5056da3d | Olga Brani | while date < now:
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65 | 5056da3d | Olga Brani | months.append((year, month, timestamp)) |
66 | 9a06d96f | Olga Brani | |
67 | 5056da3d | Olga Brani | if date.month < 12: |
68 | 5056da3d | Olga Brani | month = date.month + 1
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69 | 5056da3d | Olga Brani | year = date.year |
70 | 5056da3d | Olga Brani | else:
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71 | 5056da3d | Olga Brani | month = 1
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72 | 5056da3d | Olga Brani | year = date.year + 1
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73 | 9a06d96f | Olga Brani | |
74 | 5056da3d | Olga Brani | date = datetime.datetime(year=year, month=month, day=1)
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75 | 9a06d96f | Olga Brani | timestamp = calendar.timegm(date.utctimetuple()) |
76 | 9a06d96f | Olga Brani | |
77 | 5056da3d | Olga Brani | return months
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78 | 9a06d96f | Olga Brani | |
79 | 9a06d96f | Olga Brani | |
80 | ebd369d0 | Sofia Papagiannaki | @register.filter
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81 | ebd369d0 | Sofia Papagiannaki | def lookup(d, key): |
82 | d68590fd | Sofia Papagiannaki | return d.get(key)
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83 | d68590fd | Sofia Papagiannaki | |
84 | bdc1c103 | Olga Brani | @register.filter
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85 | bdc1c103 | Olga Brani | def lookup_uni(d, key): |
86 | bdc1c103 | Olga Brani | return d.get(unicode(key)) |
87 | bdc1c103 | Olga Brani | |
88 | 5ce3ce4f | Sofia Papagiannaki | |
89 | d68590fd | Sofia Papagiannaki | @register.filter
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90 | d68590fd | Sofia Papagiannaki | def dkeys(d): |
91 | b27c104d | Olga Brani | return d.keys()
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92 | b27c104d | Olga Brani | |
93 | 5ce3ce4f | Sofia Papagiannaki | |
94 | b27c104d | Olga Brani | @register.filter
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95 | 5056da3d | Olga Brani | def month_name(month_number): |
96 | 5056da3d | Olga Brani | return calendar.month_name[month_number]
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97 | 9a06d96f | Olga Brani | |
98 | 5056da3d | Olga Brani | |
99 | 5056da3d | Olga Brani | @register.filter
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100 | 9a06d96f | Olga Brani | def todate(value, arg=''): |
101 | 5056da3d | Olga Brani | secs = int(value) / 1000 |
102 | 789bcaf9 | Sofia Papagiannaki | return datetime.datetime.fromtimestamp(secs)
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103 | 789bcaf9 | Sofia Papagiannaki | |
104 | 789bcaf9 | Sofia Papagiannaki | |
105 | caf70869 | Sofia Papagiannaki | # @register.filter
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106 | caf70869 | Sofia Papagiannaki | # def rcut(value, chars='/'):
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107 | caf70869 | Sofia Papagiannaki | # return value.rstrip(chars)
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108 | 661c4479 | Sofia Papagiannaki | |
109 | 9a06d96f | Olga Brani | |
110 | f2a4ce70 | Sofia Papagiannaki | @register.filter
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111 | f2a4ce70 | Sofia Papagiannaki | def paginate(l, args): |
112 | c0b26605 | Sofia Papagiannaki | l = l or []
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113 | c0b26605 | Sofia Papagiannaki | page, delim, sorting = args.partition(DELIM) |
114 | c0b26605 | Sofia Papagiannaki | if sorting:
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115 | c0b26605 | Sofia Papagiannaki | if isinstance(l, QuerySet): |
116 | c0b26605 | Sofia Papagiannaki | l = l.order_by(sorting) |
117 | c0b26605 | Sofia Papagiannaki | elif isinstance(l, list): |
118 | c0b26605 | Sofia Papagiannaki | default = ''
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119 | c0b26605 | Sofia Papagiannaki | if sorting.endswith('_date'): |
120 | c0b26605 | Sofia Papagiannaki | default = datetime.datetime.utcfromtimestamp(0)
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121 | c0b26605 | Sofia Papagiannaki | l.sort(key=lambda i: getattr(i, sorting) |
122 | c0b26605 | Sofia Papagiannaki | if getattr(i, sorting) else default) |
123 | c0b26605 | Sofia Papagiannaki | paginator = Paginator(l, PAGINATE_BY) |
124 | c0b26605 | Sofia Papagiannaki | try:
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125 | c0b26605 | Sofia Papagiannaki | paginator.len |
126 | c0b26605 | Sofia Papagiannaki | except AttributeError: |
127 | c0b26605 | Sofia Papagiannaki | paginator._count = len(list(l)) |
128 | c0b26605 | Sofia Papagiannaki | |
129 | c0b26605 | Sofia Papagiannaki | try:
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130 | c0b26605 | Sofia Papagiannaki | page_number = int(page)
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131 | c0b26605 | Sofia Papagiannaki | except ValueError: |
132 | c0b26605 | Sofia Papagiannaki | if page == 'last': |
133 | c0b26605 | Sofia Papagiannaki | page_number = paginator.num_pages |
134 | c0b26605 | Sofia Papagiannaki | else:
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135 | c0b26605 | Sofia Papagiannaki | page_number = 1
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136 | c0b26605 | Sofia Papagiannaki | try:
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137 | c0b26605 | Sofia Papagiannaki | page = paginator.page(page_number) |
138 | c0b26605 | Sofia Papagiannaki | except EmptyPage:
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139 | c0b26605 | Sofia Papagiannaki | page = paginator.page(1)
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140 | c0b26605 | Sofia Papagiannaki | return page
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141 | 661c4479 | Sofia Papagiannaki | |
142 | 9a06d96f | Olga Brani | |
143 | 661c4479 | Sofia Papagiannaki | @register.filter
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144 | 661c4479 | Sofia Papagiannaki | def concat(str1, str2): |
145 | 661c4479 | Sofia Papagiannaki | if not str2: |
146 | 661c4479 | Sofia Papagiannaki | return str(str1) |
147 | dfdc64d2 | Sofia Papagiannaki | return '%s%s%s' % (str1, DELIM, str2) |
148 | dfdc64d2 | Sofia Papagiannaki | |
149 | 9a06d96f | Olga Brani | |
150 | dfdc64d2 | Sofia Papagiannaki | @register.filter
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151 | dfdc64d2 | Sofia Papagiannaki | def items(d): |
152 | dfdc64d2 | Sofia Papagiannaki | if isinstance(d, defaultdict): |
153 | dfdc64d2 | Sofia Papagiannaki | return d.iteritems()
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154 | 9a06d96f | Olga Brani | return d
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155 | ed2f0452 | Olga Brani | |
156 | ed2f0452 | Olga Brani | |
157 | ed2f0452 | Olga Brani | @register.filter
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158 | ed2f0452 | Olga Brani | def get_value_after_dot(value): |
159 | 7c76af95 | Olga Brani | return value.split(".")[1] |
160 | 7c76af95 | Olga Brani | |
161 | 84d26d62 | Sofia Papagiannaki | # @register.filter
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162 | 84d26d62 | Sofia Papagiannaki | # def strip_http(value):
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163 | 84d26d62 | Sofia Papagiannaki | # return value.replace('http://','')[:-1]
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164 | dcd1c383 | Olga Brani | |
165 | dcd1c383 | Olga Brani | |
166 | dcd1c383 | Olga Brani | from math import log |
167 | bdc1c103 | Olga Brani | unit_list = zip(['bytes', 'kB', 'MB', 'GB', 'TB', 'PB'], [0, 0, 0, 0, 0, 0]) |
168 | dcd1c383 | Olga Brani | |
169 | dcd1c383 | Olga Brani | @register.filter
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170 | dcd1c383 | Olga Brani | def sizeof_fmt(num): |
171 | 5841646f | Olga Brani | |
172 | dcd1c383 | Olga Brani | """Human friendly file size"""
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173 | 5841646f | Olga Brani | if math.isinf(num):
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174 | 5841646f | Olga Brani | return 'Unlimited' |
175 | dcd1c383 | Olga Brani | if num > 1: |
176 | dcd1c383 | Olga Brani | exponent = min(int(log(num, 1024)), len(unit_list) - 1) |
177 | dcd1c383 | Olga Brani | quotient = float(num) / 1024**exponent |
178 | dcd1c383 | Olga Brani | unit, num_decimals = unit_list[exponent] |
179 | 5841646f | Olga Brani | format_string = '{0:.%sf} {1}' % (num_decimals)
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180 | dcd1c383 | Olga Brani | return format_string.format(quotient, unit)
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181 | dcd1c383 | Olga Brani | if num == 0: |
182 | dcd1c383 | Olga Brani | return '0 bytes' |
183 | dcd1c383 | Olga Brani | if num == 1: |
184 | dcd1c383 | Olga Brani | return '1 byte' |
185 | dcd1c383 | Olga Brani | else:
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186 | b6852727 | Olga Brani | return ''; |
187 | 5841646f | Olga Brani | |
188 | 5841646f | Olga Brani | @register.filter
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189 | 5841646f | Olga Brani | def isinf(v): |
190 | 5841646f | Olga Brani | if math.isinf(v):
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191 | 5841646f | Olga Brani | return 'Unlimited' |
192 | 5841646f | Olga Brani | else:
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193 | 59728d4e | Olga Brani | return v
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194 | 59728d4e | Olga Brani | |
195 | 59728d4e | Olga Brani | @register.filter
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196 | 59728d4e | Olga Brani | def truncatename(v): |
197 | 59728d4e | Olga Brani | max = 18
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198 | 59728d4e | Olga Brani | length = len(v)
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199 | 59728d4e | Olga Brani | if length>max: |
200 | 59728d4e | Olga Brani | return v[:max]+'...' |
201 | 59728d4e | Olga Brani | else:
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202 | f366e3ed | Olga Brani | return v[:20] |