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annotate roundup/cgi/accept_language.py @ 6774:e7b4ad2c57ac

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landmarks, skiplink, remove bad attrs, autocomplete search layout.html: Add main and nav landmarks to layout templte. Add skiplink to get to main. Remove Description meta tag from layout template in favor of description metadata in individual files. Remove obsolete border attribute from sourceforge logo. Add autocomplete="on" attribute for search input box. doc/*.txt Remove language attribute from description meta tags. These changes also occur for other files not in this commit. Thse other files have changes to files for the 2.2.0 release not yet tobe committed.
author John Rouillard <rouilj@ieee.org>
date Tue, 12 Jul 2022 15:00:30 -0400
parents 3b945aee0919
children 63c9680eed20
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
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47 def parse(language_header):
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48 """parse(string_with_accept_header_content) -> languages list"""
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49
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50 if language_header is None: return []
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51
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52 # strip whitespaces.
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53 lh = language_header.translate(*remove_ws)
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54
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55 # if nothing, return
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56 if lh == "": return []
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57
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58 # split by commas and parse the quality values.
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59 pls = [lre.findall(x) for x in lh.split(',')]
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60
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61 # drop uncomformant
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62 qls = [x[0] for x in pls if len(x) > 0]
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63
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64 # use a heap queue to sort by quality values.
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65 # the value of each item is 1.0 complement.
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66 pq = []
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67 order=0
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68 for l in qls:
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69 order +=1
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70 if l[0] != '':
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71 heapq.heappush(pq, (0.0, order, l[0]))
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72 else:
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73 heapq.heappush(pq, (1.0-float(l[2]), order, l[1]))
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74
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75 # get the languages ordered by quality
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76 # and replace - by _
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77 return [ heapq.heappop(pq)[2].replace('-','_')
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78 for x in range(len(pq)) ]
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79
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80 if __name__ == "__main__":
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81 import doctest
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82 doctest.testmod()
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83
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84 # vim: set et sts=4 sw=4 :
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