author | Sverre Rabbelier <srabbelier@gmail.com> |
Sun, 02 Nov 2008 17:26:06 +0000 | |
changeset 429 | e50e18936f06 |
parent 323 | ff1a9aa48cfd |
permissions | -rw-r--r-- |
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import urllib |
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from email.Utils import formatdate |
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|
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from django.utils.encoding import smart_str, force_unicode |
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from django.utils.functional import allow_lazy |
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|
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def urlquote(url, safe='/'): |
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""" |
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A version of Python's urllib.quote() function that can operate on unicode |
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strings. The url is first UTF-8 encoded before quoting. The returned string |
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can safely be used as part of an argument to a subsequent iri_to_uri() call |
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without double-quoting occurring. |
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""" |
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return force_unicode(urllib.quote(smart_str(url), safe)) |
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|
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urlquote = allow_lazy(urlquote, unicode) |
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|
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def urlquote_plus(url, safe=''): |
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""" |
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A version of Python's urllib.quote_plus() function that can operate on |
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unicode strings. The url is first UTF-8 encoded before quoting. The |
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returned string can safely be used as part of an argument to a subsequent |
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iri_to_uri() call without double-quoting occurring. |
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""" |
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return force_unicode(urllib.quote_plus(smart_str(url), safe)) |
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urlquote_plus = allow_lazy(urlquote_plus, unicode) |
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|
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def urlencode(query, doseq=0): |
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""" |
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A version of Python's urllib.urlencode() function that can operate on |
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unicode strings. The parameters are first case to UTF-8 encoded strings and |
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then encoded as per normal. |
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""" |
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if hasattr(query, 'items'): |
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query = query.items() |
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return urllib.urlencode( |
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[(smart_str(k), |
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isinstance(v, (list,tuple)) and [smart_str(i) for i in v] or smart_str(v)) |
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for k, v in query], |
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doseq) |
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|
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def cookie_date(epoch_seconds=None): |
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""" |
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Formats the time to ensure compatibility with Netscape's cookie standard. |
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|
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Accepts a floating point number expressed in seconds since the epoch, in |
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UTC - such as that outputted by time.time(). If set to None, defaults to |
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the current time. |
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|
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Outputs a string in the format 'Wdy, DD-Mon-YYYY HH:MM:SS GMT'. |
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""" |
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rfcdate = formatdate(epoch_seconds) |
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return '%s-%s-%s GMT' % (rfcdate[:7], rfcdate[8:11], rfcdate[12:25]) |
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def http_date(epoch_seconds=None): |
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""" |
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Formats the time to match the RFC1123 date format as specified by HTTP |
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RFC2616 section 3.3.1. |
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|
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Accepts a floating point number expressed in seconds since the epoch, in |
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UTC - such as that outputted by time.time(). If set to None, defaults to |
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the current time. |
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|
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Outputs a string in the format 'Wdy, DD Mon YYYY HH:MM:SS GMT'. |
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""" |
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rfcdate = formatdate(epoch_seconds) |
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return '%s GMT' % rfcdate[:25] |
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# Base 36 functions: useful for generating compact URLs |
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def base36_to_int(s): |
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""" |
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Convertd a base 36 string to an integer |
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""" |
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return int(s, 36) |
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def int_to_base36(i): |
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""" |
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Converts an integer to a base36 string |
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""" |
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digits = "0123456789abcdefghijklmnopqrstuvwxyz" |
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factor = 0 |
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# Find starting factor |
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while True: |
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factor += 1 |
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if i < 36 ** factor: |
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factor -= 1 |
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break |
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base36 = [] |
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# Construct base36 representation |
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while factor >= 0: |
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j = 36 ** factor |
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base36.append(digits[i / j]) |
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i = i % j |
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factor -= 1 |
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return ''.join(base36) |