Mercurial > libervia-web
annotate src/server/blog.py @ 702:d94feb0d849e
server_side: give a better look to the static blog
| author | souliane <souliane@mailoo.org> |
|---|---|
| date | Mon, 11 May 2015 14:54:41 +0200 |
| parents | 82123705474b |
| children | 5319110a862c |
| rev | line source |
|---|---|
| 10 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
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4 # Libervia: a Salut à Toi frontend |
| 685 | 5 # Copyright (C) 2011, 2012, 2013, 2014, 2015 Jérôme Poisson <goffi@goffi.org> |
| 10 | 6 |
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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. |
| 10 | 11 |
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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. |
| 10 | 16 |
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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/>. |
| 10 | 19 |
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20 from sat.core.i18n import _, D_ |
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21 from sat_frontends.tools.strings import addURLToText |
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22 from sat.core.log import getLogger |
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23 log = getLogger(__name__) |
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24 |
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25 from twisted.internet import defer |
| 10 | 26 from twisted.web import server |
| 27 from twisted.web.resource import Resource | |
| 28 from twisted.words.protocols.jabber.jid import JID | |
| 29 from datetime import datetime | |
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30 import uuid |
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31 import re |
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32 import os |
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33 |
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34 from libervia.server.html_tools import sanitizeHtml, convertNewLinesToXHTML |
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35 from libervia.server.constants import Const as C |
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36 |
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37 |
| 10 | 38 class MicroBlog(Resource): |
| 39 isLeaf = True | |
| 40 | |
| 41 ERROR_TEMPLATE = """ | |
| 42 <html> | |
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43 <head profile="http://www.w3.org/2005/10/profile"> |
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44 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png"> |
| 10 | 45 <title>MICROBLOG ERROR</title> |
| 46 </head> | |
| 47 <body> | |
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48 <h1 style='text-align: center; color: red;'>%(message)s</h1> |
| 10 | 49 </body> |
| 50 </html> | |
| 51 """ | |
| 52 | |
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53 def __init__(self, host): |
| 10 | 54 self.host = host |
| 55 Resource.__init__(self) | |
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56 self.host.bridge.register('entityDataUpdated', self.entityDataUpdatedCb) |
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57 self.host.bridge.register('actionResult', self.actionResultCb) # FIXME: actionResult is to be removed |
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58 self.avatars_cache = {} |
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59 self.waiting_deferreds = {} |
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60 |
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61 def entityDataUpdatedCb(self, entity_jid_s, key, value, dummy): |
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62 """Retrieve the avatar we've been waiting for and fires the callback |
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63 for self.getAvatar to return. |
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64 |
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65 @param entity_jid_s (str): JID of the contact |
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66 @param key (str): entity data key |
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67 @param value (str): entity data value |
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68 @param dummy (str): that would be C.SERVICE_PROFILE |
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69 """ |
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70 if key != 'avatar': |
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71 return |
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72 entity_jid_s = entity_jid_s.lower() |
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73 log.debug(_(u"Received a new avatar for entity %s") % entity_jid_s) |
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74 avatar = C.AVATARS_DIR + value |
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75 self.avatars_cache[entity_jid_s] = avatar |
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76 try: |
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77 self.waiting_deferreds[entity_jid_s][1].callback(avatar) |
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78 del self.waiting_deferreds[entity_jid_s] |
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79 except KeyError: |
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80 pass |
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81 |
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82 def actionResultCb(self, answer_type, action_id, data, dummy): |
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83 """Fires the callback for self.getAvatar to return |
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84 |
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85 @param answer_type (str): 'SUPPRESS' or another value that we would ignore |
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86 @param action_id (str): the request ID |
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87 @param data (dict): ignored |
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88 @param dummy (str): that would be C.SERVICE_PROFILE |
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89 """ |
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90 # FIXME: actionResult is to be removed. For now we use it to get notified |
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91 # when the requested vCard hasn't been found. Replace with the new system. |
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92 if answer_type != 'SUPPRESS': |
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93 return |
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94 try: |
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95 entity_jid_s = [key for (key, value) in self.waiting_deferreds.items() if value[0] == action_id][0] |
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96 except IndexError: # impossible to guess the entity |
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97 return |
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98 log.debug(_(u"Using default avatar for entity %s") % entity_jid_s) |
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99 self.avatars_cache[entity_jid_s] = C.DEFAULT_AVATAR_URL |
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100 self.waiting_deferreds[entity_jid_s][1].callback(C.DEFAULT_AVATAR_URL) |
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101 del self.waiting_deferreds[entity_jid_s] |
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102 |
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103 def getAvatar(self, profile): |
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104 """Get the avatar of the given profile |
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105 |
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106 @param profile(unicode): %(doc_profile)s |
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107 @return: deferred avatar path, relative to the server's root |
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108 """ |
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109 jid_s = (profile + '@' + self.host.bridge.getNewAccountDomain()).lower() |
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110 if jid_s in self.avatars_cache: |
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111 return defer.succeed(self.avatars_cache[jid_s]) |
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112 # FIXME: request_id is no more need when actionResult is removed |
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113 request_id = self.host.bridge.getCard(jid_s, C.SERVICE_PROFILE) |
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114 self.waiting_deferreds[jid_s] = (request_id, defer.Deferred()) |
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115 return self.waiting_deferreds[jid_s][1] |
| 10 | 116 |
| 117 def render_GET(self, request): | |
| 118 if not request.postpath: | |
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119 return MicroBlog.ERROR_TEMPLATE % {'root': '', |
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120 'message': "You must indicate a nickname"} |
| 10 | 121 else: |
| 122 prof_requested = request.postpath[0] | |
| 123 #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here | |
| 124 prof_found = self.host.bridge.getProfileName(prof_requested) | |
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125 if not prof_found or prof_found == C.SERVICE_PROFILE: |
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126 return MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath), |
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127 'message': "Invalid nickname"} |
| 10 | 128 else: |
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129 def got_jid(pub_jid_s): |
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130 pub_jid = JID(pub_jid_s) |
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131 d2 = defer.Deferred() |
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132 item_id = None |
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133 atom = None |
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134 rsm_ = {} |
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135 |
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136 if len(request.postpath) > 1: |
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137 if request.postpath[1] == 'atom.xml': # return the atom feed |
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138 atom = True |
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139 else: |
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140 try: # check if the given path is a valid UUID |
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141 uuid.UUID(request.postpath[1]) |
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142 item_id = request.postpath[1] |
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143 except ValueError: |
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144 pass |
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145 |
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146 # retrieve RSM request data from URL parameters |
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147 try: |
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148 max_items = int(request.args['max'][0]) |
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149 except (ValueError, KeyError): |
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150 max_items = C.RSM_MAX_ITEMS if item_id else C.RSM_MAX_COMMENTS |
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151 rsm_['max'] = unicode(max_items) |
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152 try: |
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153 rsm_['index'] = request.args['index'][0] |
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154 except (ValueError, KeyError): |
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155 try: |
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156 rsm_['before'] = request.args['before'][0] |
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157 except KeyError: |
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158 try: |
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159 rsm_['after'] = request.args['after'][0] |
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160 except KeyError: |
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161 pass |
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162 |
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163 if atom is not None: |
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164 d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None) |
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165 self.host.bridge.getGroupBlogsAtom(pub_jid.userhost(), rsm_, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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166 return |
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167 |
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168 d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None) |
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169 if item_id: |
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170 if max_items > 0: # display one message and its comments |
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171 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], {}, max_items, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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172 else: # display one message, count its comments |
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173 self.host.bridge.getGroupBlogs(pub_jid.userhost(), [item_id], {}, True, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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174 else: |
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175 if max_items == 1: # display one message and its comments |
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176 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [], rsm_, C.RSM_MAX_COMMENTS, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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177 else: # display the last messages, count their comments |
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178 self.host.bridge.getGroupBlogs(pub_jid.userhost(), [], rsm_, True, C.SERVICE_PROFILE, d2.callback, d2.errback) |
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179 |
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180 d1 = defer.Deferred() |
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181 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback)) |
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182 d1.addCallbacks(got_jid) |
| 10 | 183 |
| 184 return server.NOT_DONE_YET | |
| 185 | |
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186 def render_html_blog(self, mblog_data, request, profile): |
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187 """Retrieve the user parameters before actually rendering the static blog |
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188 |
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189 @param mblog_data (list): couple (list, dict) with: |
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190 - a list of microblog data, or a list of couple containing: |
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191 - microblog data (main item) |
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192 - couple (comments data, RSM response data for the comments) |
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193 - RSM response data for the main items |
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194 @param request: HTTP request |
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195 @param profile |
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196 """ |
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197 d_list = [] |
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198 options = {} |
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199 |
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200 def getCallback(param_name): |
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201 d = defer.Deferred() |
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202 d.addCallback(lambda value: options.update({param_name: value})) |
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203 d_list.append(d) |
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204 return d.callback |
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205 |
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206 eb = lambda failure: self.render_error_blog(failure, request, profile) |
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207 |
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208 self.getAvatar(profile).addCallbacks(getCallback('avatar'), eb) |
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209 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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210 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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211 |
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212 cb = lambda dummy: self.__render_html_blog(mblog_data, options, request, profile) |
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213 defer.DeferredList(d_list).addCallback(cb) |
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214 |
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215 def __render_html_blog(self, mblog_data, options, request, profile): |
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216 """Actually render the static blog. If mblog_data is a list of dict, we are missing |
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217 the comments items so we just display the main items. If mblog_data is a list of couple, |
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218 each couple is associating a main item data with the list of its comments, so we render all. |
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219 |
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220 @param mblog_data (list): couple (list, dict) with: |
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221 - a list of microblog data, or a list of couple containing: |
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222 - microblog data (main item) |
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223 - couple (comments data, RSM response data for the comments) |
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224 - RSM response data for the main items |
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225 @param options: dict defining the blog's parameters |
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226 @param request: the HTTP request |
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227 @profile |
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228 """ |
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229 if not isinstance(options, dict): |
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230 options = {} |
| 10 | 231 user = sanitizeHtml(profile).encode('utf-8') |
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232 root_url = '../' * len(request.postpath) |
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233 base_url = root_url + 'blog/' + user |
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234 |
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235 def getOption(key): |
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236 return sanitizeHtml(options[key]).encode('utf-8') if key in options else '' |
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237 |
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238 def getImageOption(key, default, alt): |
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239 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/""" |
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240 url = options[key].encode('utf-8') if key in options else '' |
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241 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$" |
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242 if re.match(regexp, url): |
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243 url = url |
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244 suffix = "<br/>" |
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245 else: |
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246 url = default |
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247 suffix = "" |
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248 return "<img src='%(url)s' alt='%(alt)s'/>%(suffix)s" % {'alt': alt, 'url': url, 'suffix': suffix} |
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249 |
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250 avatar = os.path.normpath(root_url + getOption('avatar')) |
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251 title = getOption(C.STATIC_BLOG_PARAM_TITLE) or user |
| 10 | 252 request.write(""" |
| 253 <html> | |
| 254 <head> | |
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255 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
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256 <meta name="keywords" content="%(keywords)s"> |
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257 <meta name="description" content="%(description)s"> |
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258 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/> |
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259 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" /> |
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260 <link rel="icon" type="image/png" href="%(favicon)s"> |
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261 <title>%(title)s</title> |
| 10 | 262 </head> |
| 263 <body> | |
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264 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s%(title_elt)s</a></div> |
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265 """ % {'base': base_url, |
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266 'root': root_url, |
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267 'user': user, |
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268 'keywords': getOption(C.STATIC_BLOG_PARAM_KEYWORDS), |
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269 'description': getOption(C.STATIC_BLOG_PARAM_DESCRIPTION), |
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270 'title': getOption(C.STATIC_BLOG_PARAM_TITLE) or "%s's microblog" % user, |
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271 'favicon': avatar, |
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272 'banner_elt': getImageOption(C.STATIC_BLOG_PARAM_BANNER, avatar, title), |
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273 'title_elt': title, |
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274 }) |
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275 mblog_data, main_rsm = mblog_data |
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276 display_single = len(mblog_data) == 1 |
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277 |
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278 # build the navigation links |
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279 count = int(main_rsm['count']) if 'count' in main_rsm else 0 |
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280 if count > 0: |
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281 index = int(main_rsm['index']) |
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282 if index > 0: |
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283 before_link = ("%(base)s?before=%(item_id)s" % {'base': base_url, 'item_id': main_rsm['first']}).encode('utf-8') |
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284 if display_single: |
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285 before_link += '&max=1' |
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286 tmp_text = D_("later message") |
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287 class_ = 'later_message' |
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288 else: |
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289 tmp_text = D_("later messages") |
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290 class_ = 'later_messages' |
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291 before_tag = """<a href="%(link)s" class="%(class)s">%(text)s</a>""" % {'link': before_link, 'class': class_, 'text': tmp_text} |
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292 else: |
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293 before_tag = None |
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294 if index + len(mblog_data) < count: |
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295 after_link = ("%(base)s?after=%(item_id)s" % {'base': base_url, 'item_id': main_rsm['last']}).encode('utf-8') |
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296 if display_single: |
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297 after_link += '&max=1' |
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298 text = D_("older message") |
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299 class_ = 'older_message' |
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300 else: |
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301 text = D_("older messages") |
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302 class_ = 'older_messages' |
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303 after_tag = """<a href="%(link)s" class="%(class)s">%(text)s</a>""" % {'link': after_link, 'class': class_, 'text': text} |
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304 else: |
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305 after_tag = None |
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306 |
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307 # display navigation header |
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308 request.write("""<div class="header">""") |
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309 request.write("""<div class="header_content">""") |
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310 if before_tag: |
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311 request.write(before_tag) |
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312 if display_single and after_tag: |
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313 request.write(after_tag) |
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314 request.write("""</div></div>""") |
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315 |
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316 mblog_data = [(entry if isinstance(entry, tuple) else (entry, ([], {}))) for entry in mblog_data] |
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317 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('updated', 0)))) |
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318 for main_data, comments_data in mblog_data: |
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319 self.__render_html_entry(main_data, base_url, request) |
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320 comments, comments_rsm = comments_data |
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321 |
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322 # eventually display the link to show all comments |
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323 comments_count = int(main_data['comments_count']) |
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324 delta = comments_count - len(comments) |
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325 if display_single and delta > 0: |
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326 link = ("%(base)s/%(item_id)s?max=%(max)s" % {'base': base_url, |
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327 'item_id': main_data['id'], |
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328 'max': main_data['comments_count']}).encode('utf-8') |
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329 text = D_("Show %(count)d previous %(comments)s") % {'count': delta, |
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330 'comments': D_('comments') if delta > 1 else D_('comment')} |
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331 request.write("""<a href="%(link)s" class="comments_link">%(text)s</a>""" % {'link': link, 'text': text}) |
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332 |
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333 comments = sorted(comments, key=lambda entry: (float(entry.get('published', 0)))) |
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334 for comment in comments: |
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335 self.__render_html_entry(comment, base_url, request) |
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336 |
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337 # display navigation footer |
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338 request.write("""<div class="footer">""") |
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339 request.write("""<div class="footer_content">""") |
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340 if not display_single and after_tag: |
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341 request.write(after_tag) |
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342 request.write("""</div></div>""") |
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343 |
| 10 | 344 request.write('</body></html>') |
| 345 request.finish() | |
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346 |
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347 def __render_html_entry(self, entry, base_url, request): |
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348 """Render one microblog entry. |
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349 @param entry: the microblog entry |
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350 @param base_url: the base url of the blog |
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351 @param request: the HTTP request |
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352 """ |
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353 timestamp = float(entry.get('published', 0)) |
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354 datetime_ = datetime.fromtimestamp(timestamp) |
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355 is_comment = entry['type'] == 'comment' |
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356 |
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357 def getText(key): |
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358 if ('%s_xhtml' % key) in entry: |
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359 return entry['%s_xhtml' % key].encode('utf-8') |
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360 elif key in entry: |
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361 processor = addURLToText if key.startswith('content') else sanitizeHtml |
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362 return convertNewLinesToXHTML(processor(entry[key])).encode('utf-8') |
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363 return '' |
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364 |
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365 def addMainItemLink(elem): |
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366 if not item_link or not elem: |
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367 return elem |
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368 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem} |
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369 |
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370 if is_comment: |
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371 author = (_("from %s") % entry['author']).encode('utf-8') |
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372 item_link = '' |
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373 footer = '' |
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374 else: |
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375 author = ' ' |
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376 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8') |
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377 comments_count = int(entry['comments_count']) |
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378 comments_text = (D_('comments') if comments_count > 1 else D_('comment')).encode('utf-8') |
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379 footer = addMainItemLink("""<div class="mblog_footer mblog_footer_main"> |
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380 <div class="mblog_metadata"> |
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381 <div class="mblog_comments">%(count)s %(comments)s</div> |
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382 </div> |
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383 </div>""" % {'count': comments_count, |
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384 'comments': comments_text}) |
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385 |
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386 header = """<div class="mblog_header %(class)s"> |
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387 <div class="mblog_metadata"> |
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388 <div class="mblog_author">%(author)s</div> |
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389 <div class="mblog_timestamp">%(date)s</div> |
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390 </div> |
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391 </div>""" % {'author': author, 'date': datetime_, |
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392 'class': '' if is_comment else 'mblog_header_main'} |
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393 if not is_comment: |
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394 header = addMainItemLink(header) |
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395 |
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396 title = addMainItemLink(getText('title')) |
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397 body = getText('content') |
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398 if title: # insert the title within the body |
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399 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body} |
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400 |
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401 request.write("""<div class="mblog_entry %(extra_style)s"> |
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402 %(header)s |
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403 <span class="mblog_content">%(content)s</span> |
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404 %(footer)s |
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405 </div>""" % {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '', |
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406 'item_link': item_link, |
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407 'header': header, |
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408 'content': body, |
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409 'footer': footer}) |
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410 |
|
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411 def render_atom_feed(self, feed, request): |
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412 request.write(feed.encode('utf-8')) |
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413 request.finish() |
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414 |
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415 def render_error_blog(self, error, request, profile): |
|
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416 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath), |
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417 'message': "Can't access requested data"}) |
| 10 | 418 request.finish() |