annotate src/server/blog.py @ 450:41aae13cab2b

browser_side: increase message box height for all characters to fit
author souliane <souliane@mailoo.org>
date Tue, 20 May 2014 07:22:10 +0200
parents 981ed669d3b3
children 3ef6ce200c27
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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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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 import uuid
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29 import re
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31 from libervia.server.html_tools import sanitizeHtml
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32 from libervia.server.constants import Const as C
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34
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35 class MicroBlog(Resource):
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36 isLeaf = True
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37
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38 ERROR_TEMPLATE = """
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39 <html>
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40 <head profile="http://www.w3.org/2005/10/profile">
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41 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png">
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42 <title>MICROBLOG ERROR</title>
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43 </head>
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44 <body>
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45 <h1 style='text-align: center; color: red;'>%(message)s</h1>
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46 </body>
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47 </html>
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48 """
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49
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50 def __init__(self, host):
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51 self.host = host
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52 Resource.__init__(self)
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53
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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 user parameters 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 d_list = []
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99 style = {}
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100
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101 def getCallback(param_name):
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102 d = defer.Deferred()
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103 d.addCallback(lambda value: style.update({param_name: value}))
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104 d_list.append(d)
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105 return d.callback
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106
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107 eb = lambda failure: self.render_error_blog(failure, request, profile)
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108
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109 for param_name in (C.STATIC_BLOG_PARAM_TITLE, C.STATIC_BLOG_PARAM_BANNER, C.STATIC_BLOG_PARAM_KEYWORDS, C.STATIC_BLOG_PARAM_DESCRIPTION):
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110 self.host.bridge.asyncGetParamA(param_name, C.STATIC_BLOG_KEY, 'value', C.SERVER_SECURITY_LIMIT, profile, callback=getCallback(param_name), errback=eb)
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111
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112 cb = lambda dummy: self.__render_html_blog(mblog_data, style, request, profile)
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113 defer.DeferredList(d_list).addCallback(cb)
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114
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115 def __render_html_blog(self, mblog_data, style, request, profile):
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116 """Actually render the static blog. If mblog_data is a list of dict, we are missing
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117 the comments items so we just display the main items. If mblog_data is a list of couple,
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118 each couple is associating a main item data with the list of its comments, so we render all.
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119 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data)
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120 @param style: dict defining the blog's rendering parameters
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121 @param request: the HTTP request
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122 @profile
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123 """
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124 if not isinstance(style, dict):
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125 style = {}
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126 user = sanitizeHtml(profile).encode('utf-8')
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127 root_url = '../' * len(request.postpath)
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128 base_url = root_url + 'blog/' + user
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129
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130 def getFromData(key):
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131 return sanitizeHtml(style[key]).encode('utf-8') if key in style else ''
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132
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133 def getImageFromData(key, alt):
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134 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/"""
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135 url = style[key].encode('utf-8') if key in style else ''
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136 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$"
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137 return "<img src='%(url)s' alt='%(alt)s'/>" % {'alt': alt, 'url': url} if re.match(regexp, url) else alt
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138
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139 request.write("""
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140 <html>
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141 <head>
175
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142 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
441
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143 <meta name="keywords" content="%(keywords)s">
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144 <meta name="description" content="%(description)s">
389
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145 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/>
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146 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" />
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147 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png">
441
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148 <title>%(title)s</title>
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149 </head>
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150 <body>
389
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151 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div>
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152 """ % {'base': base_url,
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153 'root': root_url,
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154 'user': user,
441
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155 'keywords': getFromData(C.STATIC_BLOG_PARAM_KEYWORDS),
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156 'description': getFromData(C.STATIC_BLOG_PARAM_DESCRIPTION),
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157 'title': getFromData(C.STATIC_BLOG_PARAM_TITLE) or "%s's microblog" % user,
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158 'banner_elt': getImageFromData(C.STATIC_BLOG_PARAM_BANNER, user)})
389
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159 mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data]
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160 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0))))
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161 for entry in mblog_data:
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162 self.__render_html_entry(entry[0], base_url, request)
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163 comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0))))
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164 for comment in comments:
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165 self.__render_html_entry(comment, base_url, request)
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166 request.write('</body></html>')
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167 request.finish()
243
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168
389
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169 def __render_html_entry(self, entry, base_url, request):
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170 """Render one microblog entry.
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171 @param entry: the microblog entry
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172 @param base_url: the base url of the blog
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173 @param request: the HTTP request
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174 """
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175 timestamp = float(entry.get('published', 0))
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176 datetime_ = datetime.fromtimestamp(timestamp)
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177 is_comment = entry['type'] == 'comment'
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178 if is_comment:
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179 author = (_("comment from %s") % entry['author']).encode('utf-8')
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180 item_link = ''
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181 else:
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182 author = '&nbsp;'
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183 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8')
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184
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185 def getText(key):
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186 if ('%s_xhtml' % key) in entry:
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187 return entry['%s_xhtml' % key].encode('utf-8')
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188 elif key in entry:
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189 processor = addURLToText if key.startswith('content') else sanitizeHtml
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190 return processor(entry[key]).encode('utf-8')
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191 return ''
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192
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193 def addMainItemLink(elem):
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194 if not item_link or not elem:
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195 return elem
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196 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem}
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197
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198 header = addMainItemLink("""<div class="mblog_header">
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199 <div class="mblog_metadata">
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200 <div class="mblog_author">%(author)s</div>
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201 <div class="mblog_timestamp">%(date)s</div>
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202 </div>
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203 </div>""" % {'author': author, 'date': datetime_})
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204
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205 title = addMainItemLink(getText('title'))
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206 body = getText('content')
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207 if title: # insert the title within the body
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208 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body}
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209
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210 request.write("""<div class="mblog_entry %(extra_style)s">
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211 %(header)s
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212 <span class="mblog_content">%(content)s</span>
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213 </div>""" %
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214 {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '',
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215 'item_link': item_link,
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216 'header': header,
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217 'content': body})
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218
344
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219 def render_atom_feed(self, feed, request):
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220 request.write(feed.encode('utf-8'))
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221 request.finish()
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222
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223 def render_error_blog(self, error, request, profile):
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224 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath),
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225 'message': "Can't access requested data"})
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226 request.finish()