52 lines
1.7 KiB
Python
52 lines
1.7 KiB
Python
# -*- coding: iso-8859-1 -*-
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# Copyright (C) 2004-2005 Tristan Seligmann and Jonathan Jacobs
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# Copyright (C) 2012-2013 Bastian Kleineidam
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from .util import fetchUrl, getQueryParams
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def queryNamer(paramName, usePageUrl=False):
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"""Get name from URL query part."""
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@classmethod
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def _namer(cls, imageUrl, pageUrl):
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"""Get URL query part."""
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url = (imageUrl, pageUrl)[usePageUrl]
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return getQueryParams(url)[paramName][0]
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return _namer
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def regexNamer(regex):
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"""Get name from regular expression."""
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@classmethod
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def _namer(cls, imageUrl, pageUrl):
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"""Get first regular expression group."""
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mo = regex.search(imageUrl)
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if mo:
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return mo.group(1)
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return _namer
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def bounceStarter(url, nextSearch):
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"""Get start URL by "bouncing" back and forth one time."""
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@classmethod
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def _starter(cls):
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"""Get bounced start URL."""
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url1 = fetchUrl(url, cls.prevSearch, session=cls.session)
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if not url1:
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raise ValueError("could not find prevSearch pattern %r in %s" % (cls.prevSearch.pattern, url))
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url2 = fetchUrl(url1, nextSearch, session=cls.session)
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if not url2:
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raise ValueError("could not find nextSearch pattern %r in %s" % (nextSearch.pattern, url1))
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return url2
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return _starter
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def indirectStarter(baseUrl, latestSearch):
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"""Get start URL by indirection."""
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@classmethod
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def _starter(cls):
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"""Get indirect start URL."""
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url = fetchUrl(baseUrl, latestSearch, session=cls.session)
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if not url:
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raise ValueError("could not find latestSearch pattern %r in %s" % (latestSearch.pattern, baseUrl))
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return url
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return _starter
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