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annotate roundup/cgi/accept_language.py @ 8528:fed0f839c260

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fix: replace except: with except Exception: (by haosenwang1018@github) Remove bare 'except:' statements replace with 'except Exception'. In roundup_xmlrpc_server.py I changed Exception to BaseException so the database gets closed on signals as well. The rest of the changes do not look like they affect data integrity and are commited as supplied.
author John Rouillard <rouilj@ieee.org>
date Thu, 26 Feb 2026 09:46:02 -0500
parents 63c9680eed20
children
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 [] # noqa: E701
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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 [] # noqa: E701
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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 lang in qls:
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69 order += 1
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70 if lang[0] != '':
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71 heapq.heappush(pq, (0.0, order, lang[0]))
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72 else:
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73 heapq.heappush(pq, (1.0-float(lang[2]), order, lang[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('-', '_') for x in range(len(pq))]
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78
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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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