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annotate piecrust/uriutil.py @ 3:f485ba500df3

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Gigantic change to basically make PieCrust 2 vaguely functional. - Serving works, with debug window. - Baking works, multi-threading, with dependency handling. - Various things not implemented yet.
author Ludovic Chabant <ludovic@chabant.com>
date Sun, 10 Aug 2014 23:43:16 -0700
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children 474c9882decf
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f485ba500df3 Gigantic change to basically make PieCrust 2 vaguely functional.
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1 import re
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2 import string
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3 import logging
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4 import functools
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7 logger = logging.getLogger(__name__)
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10 class UriError(Exception):
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11 def __init__(self, uri):
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12 super(UriError, self).__init__("Invalid URI: %s" % uri)
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15 @functools.total_ordering
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16 class UriInfo(object):
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17 def __init__(self, uri, source, args, taxonomy=None, page_num=1):
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18 self.uri = uri
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19 self.source = source
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20 self.args = args
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21 self.taxonomy = taxonomy
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22 self.page_num = page_num
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24 def __eq__(self, other):
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25 return ((self.uri, self.source, self.args, self.taxonomy,
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26 self.page_num) ==
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27 (other.uri, other.source, other.args, other.taxonomy,
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28 other.page_num))
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30 def __lt__(self, other):
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31 return ((self.uri, self.source, self.args, self.taxonomy,
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32 self.page_num) <
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33 (other.uri, other.source, other.args, other.taxonomy,
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34 other.page_num))
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37 pagenum_pattern = re.compile(r'/(\d+)/?$')
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40 def parse_uri(routes, uri):
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41 if string.find(uri, '..') >= 0:
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42 raise UriError(uri)
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43
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44 page_num = 1
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45 match = pagenum_pattern.search(uri)
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46 if match is not None:
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47 uri = uri[:match.start()]
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48 page_num = int(match.group(1))
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49
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50 uri = '/' + uri.strip('/')
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51
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52 for rn, rc in routes.iteritems():
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53 pattern = route_to_pattern(rn)
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54 m = re.match(pattern, uri)
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55 if m is not None:
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56 args = m.groupdict()
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57 return UriInfo(uri, rc['source'], args, rc.get('taxonomy'),
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58 page_num)
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59
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60 return None
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63 r2p_pattern = re.compile(r'%(\w+)%')
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66 def route_to_pattern(route):
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67 return r2p_pattern.sub(r'(?P<\1>[\w\-]+)', route)
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70 def multi_replace(text, replacements):
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71 reps = dict((re.escape(k), v) for k, v in replacements.iteritems())
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72 pattern = re.compile("|".join(reps.keys()))
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73 return pattern.sub(lambda m: reps[re.escape(m.group(0))], text)
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