Mercurial > hg > TagInTheMiddle

annotate taginthemiddle/model.py @ 1:837cfc05d4d9

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add times to tags; cant things ever be easy?
author Jeff Hammel <jhammel@mozilla.com>
date Tue, 04 May 2010 18:46:05 -0700
parents 1c5cbbde4299
children 1182315b18ac
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1 """
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2 tags have:
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3 - a list of resources they're applied to
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4 - a time they're applied
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5 for now just assume auth is on and that anyone authenticated may tag
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6 e.g. a tags file
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7
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8 foo = /bar:1273023556 /fleem/baz:1273023556 etc
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9 cats = /cats:1273023556 /blog/mycat:1273023556
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10 """
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11
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12 import os
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13 import time
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14
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15 class Tags(object):
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16 """file (e.g. .ini) based tagging scheme"""
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17
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18 def __init__(self, path):
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19 """
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20 - path: path to file
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21 """
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22 self.path = path
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23 if not os.path.exists(path):
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24 f = file(path, 'w')
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25 f.close()
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26 self.tags = {}
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27 self.urls = {}
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28 self.times = {}
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29 self.read(path)
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32 def read(self):
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33 for line in file(path).readlines():
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34 line = line.strip()
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35 if not line:
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36 continue
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37 tag, urls = line.split('=', 1) # asserts '=' in line
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38 tag = tag.strip()
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39 urls = urls.strip()
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40 self.tags[tag] = set([urls])
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41 for url in urls:
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42 url, time = url.rsplit(':', 1)
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43 self.urls.setdefault(url, set()).add(tag)
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44 self.times[(tag, url)] = int(time)
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46 def write(self):
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47 f = file(self.path, 'w')
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48 for tag in sorted(self.tags.keys()):
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49 print >> f, '%s = %s' % (tag, ' '.join(['%s:%s' % (url, self.times(tag, url))
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50 for url in self.tags[tag]]))
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51 f.close()
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52
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53 def add(self, tag, url):
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54 if url in self.tags[tag]:
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55 return
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56 self.tags[tag].add(url)
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57 self.urls[url].add(tag)
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58 self.times[(tag, url)] = int(time.time())
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59 self.write()
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61 def remove(self, tag, url):
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62 if url not in self.tags[tag]:
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63 return
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64 self.tags[tag].remove(url)
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65 self.urls[url].remove(tag)
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66 self.write()