Mercurial > libervia-web
annotate src/server/blog.py @ 473:d1565906f228
server_side: fixed some forgotten print statement
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Tue, 10 Jun 2014 16:02:45 +0200 |
| parents | 3ef6ce200c27 |
| children | bbdc5357dc00 |
| rev | line source |
|---|---|
| 10 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
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4 # Libervia: a Salut à Toi frontend |
| 340 | 5 # Copyright (C) 2011, 2012, 2013, 2014 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 _ |
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21 from sat_frontends.tools.strings import addURLToText |
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22 |
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23 from twisted.internet import defer |
| 10 | 24 from twisted.web import server |
| 25 from twisted.web.resource import Resource | |
| 26 from twisted.words.protocols.jabber.jid import JID | |
| 27 from datetime import datetime | |
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28 import uuid |
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29 import re |
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30 |
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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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33 |
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34 |
| 10 | 35 class MicroBlog(Resource): |
| 36 isLeaf = True | |
| 37 | |
| 38 ERROR_TEMPLATE = """ | |
| 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"> |
| 10 | 42 <title>MICROBLOG ERROR</title> |
| 43 </head> | |
| 44 <body> | |
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45 <h1 style='text-align: center; color: red;'>%(message)s</h1> |
| 10 | 46 </body> |
| 47 </html> | |
| 48 """ | |
| 49 | |
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50 def __init__(self, host): |
| 10 | 51 self.host = host |
| 52 Resource.__init__(self) | |
| 53 | |
| 54 def render_GET(self, request): | |
| 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"} |
| 10 | 58 else: |
| 59 prof_requested = request.postpath[0] | |
| 60 #TODO: char check: only use alphanumerical chars + some extra(_,-,...) here | |
| 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"} |
| 10 | 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 try: |
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71 max_items = int(request.args['max_items'][0]) |
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72 except (ValueError, KeyError): |
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73 max_items = 10 |
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74 if len(request.postpath) > 1: |
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75 if request.postpath[1] == 'atom.xml': # return the atom feed |
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76 d2.addCallbacks(self.render_atom_feed, self.render_error_blog, [request], None, [request, prof_found], None) |
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77 self.host.bridge.getLastGroupBlogsAtom(pub_jid.userhost(), max_items, 'libervia', d2.callback, d2.errback) |
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78 return |
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79 try: # check if the given path is a valid UUID |
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80 uuid.UUID(request.postpath[1]) |
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81 item_id = request.postpath[1] |
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82 except ValueError: |
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83 pass |
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84 d2.addCallbacks(self.render_html_blog, self.render_error_blog, [request, prof_found], None, [request, prof_found], None) |
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85 if item_id: # display one message and its comments |
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86 self.host.bridge.getGroupBlogsWithComments(pub_jid.userhost(), [item_id], 'libervia', d2.callback, d2.errback) |
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87 else: # display the last messages without comment |
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88 self.host.bridge.getLastGroupBlogs(pub_jid.userhost(), max_items, 'libervia', d2.callback, d2.errback) |
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89 |
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90 d1 = defer.Deferred() |
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91 JID(self.host.bridge.asyncGetParamA('JabberID', 'Connection', 'value', C.SERVER_SECURITY_LIMIT, prof_found, callback=d1.callback, errback=d1.errback)) |
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92 d1.addCallbacks(got_jid) |
| 10 | 93 |
| 94 return server.NOT_DONE_YET | |
| 95 | |
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96 def render_html_blog(self, mblog_data, request, profile): |
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97 """Retrieve the user parameters before actually rendering the static blog |
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98 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) |
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99 @param request: HTTP request |
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100 @param profile |
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101 """ |
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102 d_list = [] |
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103 style = {} |
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104 |
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105 def getCallback(param_name): |
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106 d = defer.Deferred() |
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107 d.addCallback(lambda value: style.update({param_name: value})) |
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108 d_list.append(d) |
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109 return d.callback |
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110 |
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111 eb = lambda failure: self.render_error_blog(failure, request, profile) |
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112 |
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113 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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114 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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115 |
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116 cb = lambda dummy: self.__render_html_blog(mblog_data, style, request, profile) |
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117 defer.DeferredList(d_list).addCallback(cb) |
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118 |
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119 def __render_html_blog(self, mblog_data, style, request, profile): |
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120 """Actually render the static blog. If mblog_data is a list of dict, we are missing |
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121 the comments items so we just display the main items. If mblog_data is a list of couple, |
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122 each couple is associating a main item data with the list of its comments, so we render all. |
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123 @param mblog_data: list of microblog data or list of couple (microblog data, list of microblog data) |
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124 @param style: dict defining the blog's rendering parameters |
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125 @param request: the HTTP request |
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126 @profile |
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127 """ |
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128 if not isinstance(style, dict): |
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129 style = {} |
| 10 | 130 user = sanitizeHtml(profile).encode('utf-8') |
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131 root_url = '../' * len(request.postpath) |
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132 base_url = root_url + 'blog/' + user |
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133 |
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134 def getFromData(key): |
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135 return sanitizeHtml(style[key]).encode('utf-8') if key in style else '' |
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136 |
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137 def getImageFromData(key, alt): |
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138 """regexp from http://answers.oreilly.com/topic/280-how-to-validate-urls-with-regular-expressions/""" |
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139 url = style[key].encode('utf-8') if key in style else '' |
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140 regexp = r"^(https?|ftp)://[a-z0-9-]+(\.[a-z0-9-]+)+(/[\w-]+)*/[\w-]+\.(gif|png|jpg)$" |
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141 return "<img src='%(url)s' alt='%(alt)s'/>" % {'alt': alt, 'url': url} if re.match(regexp, url) else alt |
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142 |
| 10 | 143 request.write(""" |
| 144 <html> | |
| 145 <head> | |
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146 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
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147 <meta name="keywords" content="%(keywords)s"> |
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148 <meta name="description" content="%(description)s"> |
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149 <link rel="alternate" type="application/atom+xml" href="%(base)s/atom.xml"/> |
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150 <link rel="stylesheet" type="text/css" href="%(root)scss/blog.css" /> |
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151 <link rel="icon" type="image/png" href="%(root)ssat_logo_16.png"> |
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152 <title>%(title)s</title> |
| 10 | 153 </head> |
| 154 <body> | |
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155 <div class="mblog_title"><a href="%(base)s">%(banner_elt)s</a></div> |
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156 """ % {'base': base_url, |
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157 'root': root_url, |
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158 'user': user, |
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159 'keywords': getFromData(C.STATIC_BLOG_PARAM_KEYWORDS), |
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160 'description': getFromData(C.STATIC_BLOG_PARAM_DESCRIPTION), |
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161 'title': getFromData(C.STATIC_BLOG_PARAM_TITLE) or "%s's microblog" % user, |
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162 'banner_elt': getImageFromData(C.STATIC_BLOG_PARAM_BANNER, user)}) |
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163 mblog_data = [(entry if isinstance(entry, tuple) else (entry, [])) for entry in mblog_data] |
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164 mblog_data = sorted(mblog_data, key=lambda entry: (-float(entry[0].get('published', 0)))) |
| 10 | 165 for entry in mblog_data: |
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166 self.__render_html_entry(entry[0], base_url, request) |
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167 comments = sorted(entry[1], key=lambda entry: (float(entry.get('published', 0)))) |
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168 for comment in comments: |
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169 self.__render_html_entry(comment, base_url, request) |
| 10 | 170 request.write('</body></html>') |
| 171 request.finish() | |
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172 |
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173 def __render_html_entry(self, entry, base_url, request): |
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174 """Render one microblog entry. |
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175 @param entry: the microblog entry |
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176 @param base_url: the base url of the blog |
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177 @param request: the HTTP request |
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178 """ |
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179 timestamp = float(entry.get('published', 0)) |
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180 datetime_ = datetime.fromtimestamp(timestamp) |
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181 is_comment = entry['type'] == 'comment' |
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182 if is_comment: |
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183 author = (_("comment from %s") % entry['author']).encode('utf-8') |
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184 item_link = '' |
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185 else: |
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186 author = ' ' |
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187 item_link = ("%(base)s/%(item_id)s" % {'base': base_url, 'item_id': entry['id']}).encode('utf-8') |
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188 |
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189 def getText(key): |
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190 if ('%s_xhtml' % key) in entry: |
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191 return entry['%s_xhtml' % key].encode('utf-8') |
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192 elif key in entry: |
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193 processor = addURLToText if key.startswith('content') else sanitizeHtml |
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194 return processor(entry[key]).encode('utf-8') |
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195 return '' |
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196 |
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197 def addMainItemLink(elem): |
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198 if not item_link or not elem: |
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199 return elem |
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200 return """<a href="%(link)s" class="item_link">%(elem)s</a>""" % {'link': item_link, 'elem': elem} |
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201 |
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202 header = addMainItemLink("""<div class="mblog_header"> |
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203 <div class="mblog_metadata"> |
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204 <div class="mblog_author">%(author)s</div> |
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205 <div class="mblog_timestamp">%(date)s</div> |
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206 </div> |
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207 </div>""" % {'author': author, 'date': datetime_}) |
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208 |
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209 title = addMainItemLink(getText('title')) |
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210 body = getText('content') |
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211 if title: # insert the title within the body |
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212 body = """<h1>%(title)s</h1>\n%(body)s""" % {'title': title, 'body': body} |
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213 |
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214 request.write("""<div class="mblog_entry %(extra_style)s"> |
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215 %(header)s |
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216 <span class="mblog_content">%(content)s</span> |
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217 </div>""" % |
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218 {'extra_style': 'mblog_comment' if entry['type'] == 'comment' else '', |
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219 'item_link': item_link, |
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220 'header': header, |
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221 'content': body}) |
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222 |
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223 def render_atom_feed(self, feed, request): |
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224 request.write(feed.encode('utf-8')) |
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225 request.finish() |
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226 |
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227 def render_error_blog(self, error, request, profile): |
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228 request.write(MicroBlog.ERROR_TEMPLATE % {'root': '../' * len(request.postpath), |
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229 'message': "Can't access requested data"}) |
| 10 | 230 request.finish() |