fdeab7bee0
added GithubAPIMiddleware added ghapi.api.GitHub API calls can be done via request.github.get/get_iter or GitHub().get/get_iter.
54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
# -*- coding: utf-8 -*-
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import re
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TOKEN = r'(?:[^\(\)<>@,;:\\"/\[\]\?={} \t]+?)'
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QUOTED_STRING = r'(?:"(?:\\"|[^"])*")'
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PARAMETER = r'(?:%(TOKEN)s(?:=(?:%(TOKEN)s|%(QUOTED_STRING)s))?)' % locals()
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LINK = r'<[^>]*>\s*(?:;\s*%(PARAMETER)s?\s*)*' % locals()
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COMMA = r'(?:\s*(?:,\s*)+)'
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LINK_SPLIT = r'%s(?=%s|\s*$)' % (LINK, COMMA)
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def _unquotestring(instr):
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if instr[0] == instr[-1] == '"':
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instr = instr[1:-1]
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instr = re.sub(r'\\(.)', r'\1', instr)
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return instr
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def _splitstring(instr, item, split):
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if not instr:
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return []
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return [ h.strip() for h in re.findall(r'%s(?=%s|\s*$)' % (item, split), instr)]
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link_splitter = re.compile(LINK_SPLIT)
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def parse_link_value(instr):
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"""
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Given a link-value (i.e., after separating the header-value on commas),
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return a dictionary whose keys are link URLs and values are dictionaries
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of the parameters for their associated links.
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Note that internationalised parameters (e.g., title*) are
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NOT percent-decoded.
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Also, only the last instance of a given parameter will be included.
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For example,
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>>> parse_link_value('</foo>; rel="self"; title*=utf-8\'de\'letztes%20Kapitel')
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{'/foo': {'title*': "utf-8'de'letztes%20Kapitel", 'rel': 'self'}}
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"""
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out = {}
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if not instr:
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return out
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for link in [h.strip() for h in link_splitter.findall(instr)]:
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url, params = link.split(">", 1)
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url = url[1:]
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param_dict = {}
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for param in _splitstring(params, PARAMETER, "\s*;\s*"):
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try:
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a, v = param.split("=", 1)
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param_dict[a.lower()] = _unquotestring(v)
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except ValueError:
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param_dict[param.lower()] = None
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out[url] = param_dict
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return out
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