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annotate roundup/cgi/accept_language.py @ 5814:bd6d41f21a5a

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More extensive EditCSV testing. Uses test object to cover all types defined by database. Also check for an error with a row that's too short. CSV starts with blank line to verify that it recognises header line. Changes password, date, int, link and other fields. Deletes row and verified that it is retired. Make actions.py properly handle emptying of password field.
author John Rouillard <rouilj@ieee.org>
date Fri, 14 Jun 2019 21:26:19 -0400
parents 936275dfe1fa
children ed8a9974c1bd
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 = r"([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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38 whitespace = ' \t\n\r\v\f'
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39 try:
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40 # Python 3.
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41 remove_ws = (str.maketrans('', '', whitespace),)
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42 except AttributeError:
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43 # Python 2.
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44 remove_ws = (None, whitespace)
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45
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46 def parse(language_header):
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47 """parse(string_with_accept_header_content) -> languages list"""
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48
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49 if language_header is None: return []
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50
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51 # strip whitespaces.
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52 lh = language_header.translate(*remove_ws)
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53
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54 # if nothing, return
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55 if lh == "": return []
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56
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57 # split by commas and parse the quality values.
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58 pls = [lre.findall(x) for x in lh.split(',')]
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59
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60 # drop uncomformant
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61 qls = [x[0] for x in pls if len(x) > 0]
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62
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63 # use a heap queue to sort by quality values.
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64 # the value of each item is 1.0 complement.
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65 pq = []
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66 for l in qls:
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67 if l[0] != '':
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68 heapq.heappush(pq, (0.0, l[0]))
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69 else:
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70 heapq.heappush(pq, (1.0-float(l[2]), l[1]))
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71
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72 # get the languages ordered by quality
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73 # and replace - by _
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74 return [x[1].replace('-','_') for x in pq]
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75
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76 if __name__ == "__main__":
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77 import doctest
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78 doctest.testmod()
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79
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80 # vim: set et sts=4 sw=4 :
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