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annotate bitsyblog/settings.py @ 0:e3823be6a423

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initial commit of bitsyblog, from https://svn.openplans.org/svn/standalone/bitsyblog/trunk/
author k0s <k0scist@gmail.com>
date Sat, 12 Sep 2009 16:06:57 -0400
parents
children e54a6405a496
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e3823be6a423 initial commit of bitsyblog, from https://svn.openplans.org/svn/standalone/bitsyblog/trunk/
k0s <k0scist@gmail.com>
parents:
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1 """user settings / preferences"""
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2
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3 import parser # dateutils.parser with mods to retain strftime format
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4 import urllib2
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5 import utils
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6
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7 class InvalidSettingError(Exception):
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8 """error when trying to validate a setting"""
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9
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10 class Setting(object):
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11 def __init__(self, name, value=None):
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12 self.name = name
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13 self.value = value
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14 self.error_message = 'Invalid value for %s' % name
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15
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16 def validator(self, value):
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17 return True
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18
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19 def set(self, value):
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20 if not self.validator(value):
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21 raise InvalidSettingError(self.error_message)
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22 self.value = value
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23
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24 class DateFormat(Setting):
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25 def __init__(self):
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26 Setting.__init__(self, 'Date format')
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27
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28 def set(self, format):
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29 value = parser.parser()._parse(format)
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30 if value:
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31 self.value = value.format
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32 else:
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33 raise InvalidSettingError('unrecognized date format: %s' % format)
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34
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35
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36 class CSSFile(Setting):
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37 def __init__(self):
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38 Setting.__init__(self, 'CSS file')
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39
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40 def set(self, value):
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41 if not hasattr(value, 'file'):
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42 return True # blank set: don't do anything
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43 css = value.file.read()
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44 try:
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45 validcss = utils.validate_css(css)
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46 except urllib2.URLError:
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47 raise InvalidSettingError('Could not validate CSS (sorry!)')
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48 if not validcss:
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49 raise InvalidSettingError('%s is not valid css' % filename)
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50 filename = value.filename
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51 if not filename.endswith('.css'):
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52 filename = '%s.css' % filename
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53 self.value = dict(filename=filename, css=css)
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54
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55 user = [ DateFormat(),
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56 Setting('Subject'),
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57 Setting('Friends'),
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58 Setting('Stylesheet'),
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59 ]
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60
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61 form = user[:]
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62 form += [ CSSFile() ]