Merge pull request #45 from rspec/fix-disqus-for-imported-posts

Add proper disqus variables to the snippet.

Author: JonRowe

config.rb

@@ -131,4 +131,95 @@ def documentation_links_for(gem_name)
       end
     end
   end
+
+  POSTS_IMPORTED_FROM_MYRONS_BLOG  = %w[
+    /blog/2014/09/rspec-3-1-has-been-released/
+    /blog/2014/06/rspec-team-changes/
+    /blog/2014/06/rspec-2-99-0-and-3-0-0-have-been-released/
+    /blog/2014/05/notable-changes-in-rspec-3/
+    /blog/2014/05/rspec-2-99-and-3-0-rc-1-have-been-released/
+    /blog/2014/02/rspec-2-99-and-3-0-beta-2-have-been-released/
+    /blog/2014/01/new-in-rspec-3-composable-matchers/
+    /blog/2013/11/rspec-2-99-and-3-0-betas-have-been-released/
+    /blog/2013/07/the-plan-for-rspec-3/
+    /blog/2013/07/rspec-2-14-is-released/
+    /blog/2013/04/rspec-team-changes/
+    /blog/2013/02/rspec-2-13-is-released/
+    /blog/2012/07/mixing-and-matching-parts-of-rspec/
+    /blog/2012/06/constant-stubbing-in-rspec-2-11/
+    /blog/2012/06/rspecs-new-expectation-syntax/
+    /blog/2011/11/recent-rspec-configuration-warnings-and-errors/
+  ].to_set
+
+  def imported_from_myrons_blog?(page)
+    POSTS_IMPORTED_FROM_MYRONS_BLOG.include?(page.url)
+  end
+
+  def disqus_shortname_for(page)
+    if imported_from_myrons_blog?(page)
+      'myronmarston-personal-site'
+    else
+      "rspec"
+    end
+  end
+
+  def disqus_identifier_for(page)
+    path = page.url
+    if imported_from_myrons_blog?(page)
+      path.sub(%r{^/blog/}, "/n/dev-blog/").sub(%r{/$}, '')
+    else
+      path
+    end
+  end
+  alias disqus_path_for disqus_identifier_for
+
+  def disqus_url_for(page)
+    path = disqus_path_for(page)
+    if imported_from_myrons_blog?(page)
+      "http://myronmars.to#{path}"
+    else
+      "http://rspec.info#{path}"
+    end
+  end
+
+=begin
+  Borrowed from the EJS gem:
+    https://github.com/sstephenson/ruby-ejs/blob/v1.1.1/lib/ejs.rb#L6-L17
+    https://github.com/sstephenson/ruby-ejs/blob/v1.1.1/lib/ejs.rb#L60-L63
+
+  Copyright (c) 2011 Sam Stephenson
+
+  Permission is hereby granted, free of charge, to any person obtaining
+  a copy of this software and associated documentation files (the
+  "Software"), to deal in the Software without restriction, including
+  without limitation the rights to use, copy, modify, merge, publish,
+  distribute, sublicense, and/or sell copies of the Software, and to
+  permit persons to whom the Software is furnished to do so, subject to
+  the following conditions:
+
+  The above copyright notice and this permission notice shall be
+  included in all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+=end
+  JS_UNESCAPES = {
+    '\\' => '\\',
+    "'" => "'",
+    'r' => "\r",
+    'n' => "\n",
+    't' => "\t",
+    'u2028' => "\u2028",
+    'u2029' => "\u2029"
+  }
+  JS_ESCAPES = JS_UNESCAPES.invert
+  JS_ESCAPE_PATTERN = Regexp.union(JS_ESCAPES.keys)
+  def js_escape(string)
+    string.gsub(JS_ESCAPE_PATTERN) { |match| '\\' + JS_ESCAPES[match] }
+  end
 end

source/_disqus.html.erb

@@ -1,7 +1,10 @@
 <div id="disqus_thread"></div>
 <script type="text/javascript">
   /* * * CONFIGURATION VARIABLES: EDIT BEFORE PASTING INTO YOUR WEBPAGE * * */
-  var disqus_shortname = 'rspec'; // required: replace example with your forum shortname
+  var disqus_shortname  = '<%= disqus_shortname_for current_page %>';
+  var disqus_identifier = '<%= disqus_identifier_for current_page %>';
+  var disqus_title      = '<%= js_escape current_page.data.title %>';
+  var disqus_url        = '<%= disqus_url_for current_page %>';
 
   /* * * DON'T EDIT BELOW THIS LINE * * */
   (function() {