Mercurial > hg > bitsyblog
annotate bitsyblog/blog.py @ 69:bcc3a59713c3
1st steps to have blog post entry handler plugins
author | Jeff Hammel <jhammel@mozilla.com> |
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date | Wed, 07 Jul 2010 13:58:21 -0700 |
parents | e3823be6a423 |
children | f6a6a4b072e7 |
rev | line source |
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0
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1 """blog interfaces to data for bitsy""" |
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2 |
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3 import os |
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4 import utils |
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5 |
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6 from cStringIO import StringIO |
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7 from glob import glob |
69
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8 from pkg_resources import iter_entry_points |
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9 |
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10 class BlogEntry(object): |
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11 """interface class for a blog entry""" |
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12 def __init__(self, date, body, privacy, user): |
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13 self.date = date |
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14 self.body = body |
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15 self.privacy = privacy |
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16 if user is not None: |
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17 self.user = user |
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18 |
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19 def title(self, characters=80): |
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20 if '\n' in self.body: |
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21 lines = [i.strip() for i in self.body[:characters].split('\n')] |
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22 if len(lines[0]) > characters: |
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23 return self.snippet(charachters) |
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24 if len(lines) > 1 and not lines[1]: |
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25 return lines[0] |
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26 return self.snippet(characters) |
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27 |
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28 def snippet(self, characters=80): |
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29 if characters: |
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30 if len(self.body) > characters: |
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31 |
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32 |
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33 text = ' '.join(self.body[:characters].split()[:-1]) |
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34 if '\n' in text: |
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35 lines = [ i.strip() for i in text.split('\n') ] |
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36 if '' in lines: |
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37 return '\n'.join(lines[:lines.index('')]) |
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38 |
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39 if text: |
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40 return '%s ...' % text |
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41 else: |
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42 return self.body |
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43 return '' |
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44 |
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45 def datestamp(self): |
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46 return utils.datestamp(self.date) |
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47 |
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48 class Blog(object): |
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49 """abstract class for a users' blog""" |
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50 def __init__(self): |
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51 self.handlers = [] # handlers for blog post event |
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52 for entry_point in iter_entry_points('bitsyblog.listeners'): |
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53 try: |
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54 handler = entry_point.load() |
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55 self.handlers.append(handler) |
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56 except: |
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57 continue |
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58 |
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59 def __call__(self, user, permissions=('public',), number=None): |
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60 return self.blog(user, permissions, number=number) |
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61 |
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62 def latest(self, users, number): |
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63 """return the lastest entries""" |
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64 blog = [] |
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65 for user in users: |
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66 blog.extend(self.blog(user, ('public',), number)) |
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67 blog.sort(key=lambda entry: entry.date, reverse=True) |
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68 return blog[:number] |
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69 |
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70 # interfaces for subclasses |
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71 |
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72 def blog(self, user, permissions, number=None): |
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73 """ |
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74 return the user's blog sorted in reverse date order |
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75 if number is None, the entire blog is returned |
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76 """ |
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77 |
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78 def entry(self, user, datestamp, permissions): |
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79 """ |
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80 return a single blog entry with the given datestamp: |
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81 'YYYYMMDDHHMMSS' |
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82 """ |
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83 |
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84 def entries(self, user, permissions, year=None, month=None, day=None): |
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85 """return entries by date""" |
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86 |
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87 |
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88 def post(self, user, date, text, privacy): |
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89 """post a new blog entry""" |
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90 entry = BlogEntry(date, body, privacy, user): |
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91 for handler in self.handlers: |
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92 handler(entry) |
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93 |
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94 def delete(self, user, datestamp): |
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95 """remove a blog entry""" |
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96 |
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97 class FileBlog(Blog): |
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98 """a blog that lives on the filesystem""" |
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99 |
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100 def __init__(self, directory): |
69
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1st steps to have blog post entry handler plugins
Jeff Hammel <jhammel@mozilla.com>
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101 Blog.__init__(self) |
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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 return BlogEntry(utils.date(datestamp), |
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113 self.body(user, datestamp, permission), |
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114 permission, user) |
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115 |
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116 ### interfaces from Blog |
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117 |
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118 def blog(self, user, permissions, number=None): |
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119 entries = [] |
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120 for permission in permissions: |
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121 entries.extend([ (entry, permission) |
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122 for entry in os.listdir(self.location(user, permission)) ]) |
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123 entries.sort(key=lambda x: x[0], reverse=True) |
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124 |
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125 if number is not None: |
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126 entries = entries[:number] |
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127 |
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128 return [ self.get_entry(user, x[0], x[1]) for x in entries ] |
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129 |
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130 def entry(self, user, datestamp, permissions): |
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131 for permission in permissions: |
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132 filename = self.location(user, permission, datestamp) |
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133 if os.path.exists(filename): |
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134 return self.get_entry(user, datestamp, permission) |
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135 |
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136 def entries(self, user, permissions, year=None, month=None, day=None): |
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137 |
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138 # build a file glob expression |
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139 dateargs = [ year, month, day, None ] |
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140 glob_expr = '' |
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141 for index in range(len(dateargs)): |
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142 value = dateargs[index] |
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143 if value is None: |
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144 break |
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145 length = len(utils.timeformat[index]) |
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146 glob_expr += '%0*d' % (length, int(value)) |
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147 while index < len(utils.timeformat): |
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148 glob_expr += '[0-9]' * len(utils.timeformat[index]) |
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149 index += 1 |
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150 |
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151 # get the blog entries |
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152 entries = [] |
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153 for permission in permissions: |
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154 entries.extend([ (os.path.split(entry)[-1], permission) |
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155 for entry in glob(os.path.join(self.location(user, permission), glob_expr)) ]) |
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156 entries.sort(key=lambda x: x[0], reverse=True) |
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157 return [ self.get_entry(user, x[0], x[1]) for x in entries ] |
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158 |
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159 def post(self, user, datestamp, body, privacy): |
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160 blog = file(self.location(user, privacy, datestamp), 'w') |
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161 print >> blog, body |
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162 |
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163 def delete(self, user, datestamp): |
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164 for permission in 'public', 'secret', 'private': |
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165 path = self.location(user, permission, datestamp) |
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166 if os.path.exists(path): |
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167 os.remove(path) |