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annotate roundup/cgi/accept_language.py @ 5253:2d61e39b89c8

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Issue2550716 Email address displayed after password reset request (fix) Change the message displayed upon password reset using an account name to no longer expose the email address. Password reset triggered using an email address will still display the user supplied email address.
author John Rouillard <rouilj@ieee.org>
date Sat, 26 Aug 2017 20:27:08 -0400
parents 74476eaac38a
children b00cd44fea16
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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52f89836d05b Parse the Accept-Language header as defined in RFC2616.
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1 """Parse the Accept-Language header as defined in RFC2616.
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2
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3 See http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
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4 for details. This module should follow the spec.
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5 Author: Hernan M. Foffani (hfoffani@gmail.com)
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6 Some use samples:
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7
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8 >>> parse("da, en-gb;q=0.8, en;q=0.7")
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9 ['da', 'en_gb', 'en']
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10 >>> parse("en;q=0.2, fr;q=1")
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11 ['fr', 'en']
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12 >>> parse("zn; q = 0.2 ,pt-br;q =1")
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13 ['pt_br', 'zn']
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14 >>> parse("es-AR")
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15 ['es_AR']
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16 >>> parse("es-es-cat")
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17 ['es_es_cat']
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18 >>> parse("")
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19 []
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20 >>> parse(None)
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21 []
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22 >>> parse(" ")
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23 []
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24 >>> parse("en,")
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25 ['en']
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26 """
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27
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28 import re
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29 import heapq
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30
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31 # regexp for languange-range search
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32 nqlre = "([A-Za-z]+[-[A-Za-z]+]*)$"
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33 # regexp for languange-range search with quality value
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34 qlre = "([A-Za-z]+[-[A-Za-z]+]*);q=([\d\.]+)"
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35 # both
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36 lre = re.compile(nqlre + "|" + qlre)
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37
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74476eaac38a more modernisation
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38 ascii = ''.join([chr(x) for x in range(256)])
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39 whitespace = ' \t\n\r\v\f'
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40
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41 def parse(language_header):
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42 """parse(string_with_accept_header_content) -> languages list"""
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43
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44 if language_header is None: return []
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45
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46 # strip whitespaces.
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47 lh = language_header.translate(ascii, whitespace)
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48
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49 # if nothing, return
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50 if lh == "": return []
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51
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52 # split by commas and parse the quality values.
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53 pls = [lre.findall(x) for x in lh.split(',')]
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54
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55 # drop uncomformant
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56 qls = [x[0] for x in pls if len(x) > 0]
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57
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58 # use a heap queue to sort by quality values.
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59 # the value of each item is 1.0 complement.
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60 pq = []
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61 for l in qls:
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62 if l[0] != '':
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63 heapq.heappush(pq, (0.0, l[0]))
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64 else:
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65 heapq.heappush(pq, (1.0-float(l[2]), l[1]))
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66
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67 # get the languages ordered by quality
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68 # and replace - by _
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69 return [x[1].replace('-','_') for x in pq]
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70
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71 if __name__ == "__main__":
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72 import doctest
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73 doctest.testmod()
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74
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75 # vim: set et sts=4 sw=4 :
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