Mercurial > hg > bitsyblog

annotate bitsyblog/blog.py @ 84:e5a23f5ea14e

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make cooked bodies depend on file mtime
author Jeff Hammel <jhammel@mozilla.com>
date Thu, 17 Nov 2011 13:18:51 -0800
parents 666f3051ce31
children c7495fb71045
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 """blog interfaces to data for bitsy"""
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2
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3 import datetime
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4 import os
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5 import utils
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6
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7 from cStringIO import StringIO
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8 from glob import glob
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9 from pkg_resources import iter_entry_points
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11 class BlogEntry(object):
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12 """interface class for a blog entry"""
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13 def __init__(self, date, body, privacy, user, modified=None):
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14 self.date = date
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15 self.body = body
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16 self.privacy = privacy
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17 self._modified = modified
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18 if user is not None:
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19 self.user = user
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21 def title(self, characters=80):
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22
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23 if '\n' in self.body:
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24 lines = [i.strip() for i in self.body[:characters].split('\n')]
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25 if len(lines[0]) > characters:
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26 retval = self.snippet(charachters)
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27 elif len(lines) > 1 and not lines[1]:
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28 retval = lines[0]
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29 else:
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30 retval = self.snippet(characters)
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31 else:
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32 retval = self.snippet(characters)
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33 return retval.decode('utf-8')
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35 def snippet(self, characters=80):
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36 if characters:
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37 if len(self.body) > characters:
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39 text = ' '.join(self.body[:characters].split()[:-1])
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40 if '\n' in text:
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41 lines = [ i.strip() for i in text.split('\n') ]
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42 if '' in lines:
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43 return '\n'.join(lines[:lines.index('')])
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45 if text:
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46 return '%s ...' % text
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47 else:
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48 return self.body
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49 return ''
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51 def datestamp(self):
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52 return utils.datestamp(self.date)
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53
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54 def modified(self):
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55 """returns the last modification date"""
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56 return self._modified or self.datestamp()
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58
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59 class Blog(object):
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60 """abstract class for a users' blog"""
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61
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62 def __call__(self, user, permissions=('public',), number=None):
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63 return self.blog(user, permissions, number=number)
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64
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65 def latest(self, users, number):
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66 """return the lastest entries"""
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67 blog = []
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68 for user in users:
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69 blog.extend(self.blog(user, ('public',), number))
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70 blog.sort(key=lambda entry: entry.date, reverse=True)
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71 return blog[:number]
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72
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73 # interfaces for subclasses
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75 def blog(self, user, permissions, number=None):
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76 """
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77 return the user's blog sorted in reverse date order
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78 if number is None, the entire blog is returned
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79 """
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81 def entry(self, user, datestamp, permissions):
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82 """
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83 return a single blog entry with the given datestamp:
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84 'YYYYMMDDHHMMSS'
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85 """
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86
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87 def entries(self, user, permissions, year=None, month=None, day=None):
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88 """return entries by date"""
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89
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90
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91 def post(self, user, date, text, privacy):
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92 """post a new blog entry"""
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93 return BlogEntry(date, text, privacy, user)
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94
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95 def delete(self, user, datestamp):
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96 """remove a blog entry"""
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97
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98 class FileBlog(Blog):
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99 """a blog that lives on the filesystem"""
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100
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101 def __init__(self, directory):
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102 self.directory = directory
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103
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104 def location(self, user, permission, *path):
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105 """returns which directory files are in based on permission"""
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106 return os.path.join(self.directory, user, 'entries', permission, *path)
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107
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108 def body(self, user, datestamp, permission):
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109 return file(self.location(user, permission, datestamp)).read()
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110
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111 def get_entry(self, user, datestamp, permission):
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112 modified = datetime.datetime.fromtimestamp(os.path.getmtime(self.location(user, permission, datestamp)))
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113 return BlogEntry(utils.date(datestamp),
0
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114 self.body(user, datestamp, permission),
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115 permission, user, modified=modified)
0
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116
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117 ### interfaces from Blog
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118
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119 def blog(self, user, permissions, number=None):
0
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120 entries = []
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121 for permission in permissions:
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122 entries.extend([(entry, permission)
0
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123 for entry in os.listdir(self.location(user, permission)) ])
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124 entries.sort(key=lambda x: x[0], reverse=True)
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125
0
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126 if number is not None:
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127 entries = entries[:number]
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128
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129 return [ self.get_entry(user, x[0], x[1]) for x in entries ]
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130
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131 def entry(self, user, datestamp, permissions):
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132 for permission in permissions:
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133 filename = self.location(user, permission, datestamp)
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134 if os.path.exists(filename):
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135 return self.get_entry(user, datestamp, permission)
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136
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137 def entries(self, user, permissions, year=None, month=None, day=None):
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138
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139 # build a file glob expression
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140 dateargs = [ year, month, day, None ]
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141 glob_expr = ''
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142 for index in range(len(dateargs)):
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143 value = dateargs[index]
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144 if value is None:
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145 break
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146 length = len(utils.timeformat[index])
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147 glob_expr += '%0*d' % (length, int(value))
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148 while index < len(utils.timeformat):
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149 glob_expr += '[0-9]' * len(utils.timeformat[index])
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150 index += 1
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151
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152 # get the blog entries
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153 entries = []
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154 for permission in permissions:
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155 entries.extend([(os.path.split(entry)[-1], permission)
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156 for entry in glob(os.path.join(self.location(user, permission), glob_expr))])
0
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157 entries.sort(key=lambda x: x[0], reverse=True)
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158 return [ self.get_entry(user, x[0], x[1]) for x in entries ]
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159
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160 def post(self, user, datestamp, body, privacy):
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161 blog = file(self.location(user, privacy, datestamp), 'w')
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162 print >> blog, body
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163 return Blog.post(self, user, datestamp, body, privacy)
0
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164
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165 def delete(self, user, datestamp):
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166 for permission in 'public', 'secret', 'private':
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167 path = self.location(user, permission, datestamp)
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168 if os.path.exists(path):
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169 os.remove(path)