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annotate libervia_server/blog.py @ 433:bbdbee25123a

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import constants.Const as C (according to the coding rules)
author souliane <souliane@mailoo.org>
date Thu, 01 May 2014 11:29:09 +0200
parents 35a43d0dc032
children 73f767a9ac2f
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 # Libervia: a Salut à Toi frontend
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5 # Copyright (C) 2011, 2012, 2013, 2014 Jérôme Poisson <goffi@goffi.org>
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 from sat.core.i18n import _
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21 from sat_frontends.tools.strings import addURLToText
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22 from libervia_server.html_tools import sanitizeHtml
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23 from twisted.internet import defer
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24 from twisted.web import server
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25 from twisted.web.resource import Resource
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26 from twisted.words.protocols.jabber.jid import JID
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27 from datetime import datetime
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28 from constants import Const as C
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29 import uuid
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30 import re
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32
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33 class MicroBlog(Resource):
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34 isLeaf = True
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35
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36 ERROR_TEMPLATE = """
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37 <html>
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38 <head profile="http://www.w3.org/2005/10/profile">
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39 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png">
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40 <title>MICROBLOG ERROR</title>
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41 </head>
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42 <body>
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43 <h1 style='text-align: center; color: red;'>%(message)s</h1>
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44 </body>
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45 </html>
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46 """
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47
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48 def __init__(self, host):
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49 self.host = host
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50 Resource.__init__(self)
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51 if not host.bridge.isConnected("libervia"): # FIXME: hard coded value for test
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52 host.bridge.connect("libervia")
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54 def render_GET(self, request):
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55 if not request.postpath:
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56 return MicroBlog.ERROR_TEMPLATE % {'root': '',
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57 'message': "You must indicate a nickname"}
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58 else:
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59 prof_requested = request.postpath[0]
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60 #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here
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61 prof_found = self.host.bridge.getProfileName(prof_requested)
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62 if not prof_found or prof_found == 'libervia':
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63 return MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath),
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64 'message': "Invalid nickname"}
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65 else:
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66 def got_jid(pub_jid_s):
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67 pub_jid = JID(pub_jid_s)
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68 d2 = defer.Deferred()
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69 item_id = None
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70 if len(request.postpath) > 1:
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71 if request.postpath[1] == 'atom.xml': # return the atom feed
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72 d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None)
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73 self.host.bridge.getLastGroupBlogsAtom(pub_jid.userhost(), 10, 'libervia', d2.callback, d2.errback)
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74 return
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75 try: # check if the given path is a valid UUID
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76 uuid.UUID(request.postpath[1])
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77 item_id = request.postpath[1]
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78 except ValueError:
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79 pass
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80 d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None)
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81 if item_id: # display one message and its comments
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82 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], 'libervia', d2.callback, d2.errback)
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83 else: # display the last messages without comment
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84 self.host.bridge.getLastGroupBlogs(pub_jid.userhost(), 10, 'libervia', d2.callback, d2.errback)
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85
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86 d1 = defer.Deferred()
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87 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback))
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88 d1.addCallbacks(got_jid)
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90 return server.NOT_DONE_YET
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91
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92 def render_html_blog(self, mblog_data, request, profile):
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93 """Retrieve the blog banner or other user's specific stuff before actually rendering the static blog
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94 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data)
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95 @param request: HTTP request
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96 @param profile
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97 """
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98 def check_banner(banner):
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99 """Regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/"""
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100 if re.match(r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$", banner):
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101 style = {'banner': banner}
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102 else:
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103 style = {}
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104 self.__render_html_blog(mblog_data, style, request, profile)
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105 eb = lambda failure: self.render_error_blog(failure, request, profile)
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106 self.host.bridge.asyncGetParamA('Blog banner', 'Misc', 'value', C.SERVER_SECURITY_LIMIT, profile, callback=check_banner, errback=eb)
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107
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108 def __render_html_blog(self, mblog_data, style, request, profile):
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109 """Actually render the static blog. If mblog_data is a list of dict, we are missing
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110 the comments items so we just display the main items. If mblog_data is a list of couple,
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111 each couple is associating a main item data with the list of its comments, so we render all.
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112 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data)
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113 @param style: dict defining the blog's rendering parameters
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114 @param request: the HTTP request
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115 @profile
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116 """
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117 if not isinstance(style, dict):
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118 style = {}
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119 user = sanitizeHtml(profile).encode('utf-8')
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120 root_url = '../' * len(request.postpath)
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121 base_url = root_url + 'blog/' + user
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122 banner = style['banner'].encode('utf-8') if 'banner' in style else ''
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123 banner_elt = "<img src='%(banner)s' alt='%(user)s'/>" % {'user': user, 'banner': banner} if banner else user
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124 request.write("""
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125 <html>
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126 <head>
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127 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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128 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/>
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129 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" />
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130 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png">
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131 <title>%(user)s's microblog</title>
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132 </head>
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133 <body>
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134 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div>
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135 """ % {'base': base_url,
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136 'root': root_url,
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137 'user': user,
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138 'banner_elt': banner_elt})
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139 mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data]
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140 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0))))
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141 for entry in mblog_data:
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142 self.__render_html_entry(entry[0], base_url, request)
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143 comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0))))
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144 for comment in comments:
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145 self.__render_html_entry(comment, base_url, request)
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146 request.write('</body></html>')
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147 request.finish()
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148
389
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149 def __render_html_entry(self, entry, base_url, request):
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150 """Render one microblog entry.
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151 @param entry: the microblog entry
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152 @param base_url: the base url of the blog
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153 @param request: the HTTP request
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154 """
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155 timestamp = float(entry.get('published', 0))
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156 datetime_ = datetime.fromtimestamp(timestamp)
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157 is_comment = entry['type'] == 'comment'
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158 if is_comment:
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159 author = (_("comment from %s") % entry['author']).encode('utf-8')
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160 item_link = ''
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161 else:
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162 author = '&nbsp;'
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163 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8')
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164
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165 def getText(key):
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166 if ('%s_xhtml' % key) in entry:
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167 return entry['%s_xhtml' % key].encode('utf-8')
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168 elif key in entry:
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169 processor = addURLToText if key.startswith('content') else sanitizeHtml
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170 return processor(entry[key]).encode('utf-8')
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171 return ''
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172
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173 def addMainItemLink(elem):
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174 if not item_link or not elem:
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175 return elem
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176 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem}
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177
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178 header = addMainItemLink("""<div class="mblog_header">
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179 <div class="mblog_metadata">
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180 <div class="mblog_author">%(author)s</div>
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181 <div class="mblog_timestamp">%(date)s</div>
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182 </div>
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183 </div>""" % {'author': author, 'date': datetime_})
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184
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185 title = addMainItemLink(getText('title'))
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186 body = getText('content')
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187 if title: # insert the title within the body
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188 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body}
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189
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190 request.write("""<div class="mblog_entry %(extra_style)s">
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191 %(header)s
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192 <span class="mblog_content">%(content)s</span>
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193 </div>""" %
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194 {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '',
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195 'item_link': item_link,
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196 'header': header,
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197 'content': body})
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198
344
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199 def render_atom_feed(self, feed, request):
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200 request.write(feed.encode('utf-8'))
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201 request.finish()
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202
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203 def render_error_blog(self, error, request, profile):
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204 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath),
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205 'message': "Can't access requested data"})
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206 request.finish()