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annotate roundup/cgi/accept_language.py @ 6628:2bb6d7baa47d

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"Comment" out the meta data - will not process under 1.7.5 sphinx Apparently field names with : fail on 1.7.5 sphinx which is the virtual env version on sourceforge. It works on my 1.6.7 python2 install. Looks like I need to add sphinxext-opengraph to get this to work. However that is python3 only so need to spin up new virtualenv etc. Looks like no python3 on sourceforge which may be an issue. On sourceforge in /home/project-web/roundup/src/docbuilder these packages are used and must be scp'ed as pip has no network access outside of sourceforge: Babel-2.6.0-py2.py3-none-any.whl Jinja2-2.10-py2.py3-none-any.whl MarkupSafe-1.0.tar.gz Pygments-2.2.0-py2.py3-none-any.whl Sphinx-1.7.5 Sphinx-1.7.5-py2.py3-none-any.whl Sphinx-1.7.5.tar.gz alabaster-0.7.11-py2.py3-none-any.whl certifi-2018.4.16-py2.py3-none-any.whl chardet-3.0.4-py2.py3-none-any.whl docutils-0.14-py2-none-any.whl idna-2.7-py2.py3-none-any.whl imagesize-1.0.0-py2.py3-none-any.whl packaging-17.1-py2.py3-none-any.whl pip-10.0.1 pip-10.0.1.tar.gz pyparsing-2.2.0-py2.py3-none-any.whl pytz-2018.5-py2.py3-none-any.whl requests-2.19.1-py2.py3-none-any.whl setuptools-39.2.0-py2.py3-none-any.whl six-1.11.0-py2.py3-none-any.whl snowballstemmer-1.2.1-py2.py3-none-any.whl sphinxcontrib_websupport-1.1.0-py2.py3-none-any.whl typing-3.6.4-py2-none-any.whl urllib3-1.23-py2.py3-none-any.whl
author John Rouillard <rouilj@ieee.org>
date Sun, 27 Mar 2022 13:57:04 -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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