Improve contributors.rb plugin

Validate returned data from GitHub API
htmlescape data on the HTML page
Drop unnecessary yaml dependency
Add more comments in the code
Add more aliases in _config.yml
Fix vertical-align style

_config.yml

@@ -112,6 +112,13 @@ aliases:
   --author=Satoshi Nakamoto: Satoshi Nakamoto
   gavinandresen: Gavin Andresen
   tcatm: Nils Schneider
+  gmaxwell: Gregory Maxwell
+  sipa: Pieter Wuille
+  jgarzik: Jeff Garzik
+  petertodd: Peter Todd
+  luke-jr: Luke-Jr
+  laanwj: Wladimir J. van der Laan
+  mikehearn: Mike Hearn
 
 safe:        false
 server_port: 4000

_less/screen.less

@@ -961,10 +961,11 @@ table td,table th{
 	font-size:80%;
 }
 .contributors span{
-	padding:6px 0;
+	padding:8px 0;
 	width:170px;
 	overflow:hidden;
 	display:inline-block;
+	vertical-align:top;
 }
 
 .resources{

_plugins/contributors.rb

@@ -4,56 +4,83 @@
 
 require 'open-uri'
 require 'json'
-require 'yaml'
 
 module Jekyll
 
   class CategoryGenerator < Generator
-    def fetch_contributors
-      page = 1
+
+    def contributors(aliases)
       contributors = []
+      # Call GitHub API with 100 results per page
+      page = 1
+      data = []
       while page < 10 do
         begin
           ar = JSON.parse(open("https://api.github.com/repos/bitcoin/bitcoin/contributors?page=#{page}&per_page=100","User-Agent"=>"Ruby/#{RUBY_VERSION}").read)
+        # Prevent any error to stop the build process, return an empty array instead
         rescue
           print 'GitHub API Call Failed!'
           break
         end
+        if !ar.is_a?(Array)
+          print 'GitHub API Call Failed!'
+          return contributors
+        end
+        if ar.length > 100
+          print 'GitHub API exceeding the 100 results limit!'
+          return contributors
+        end
+        # Stop calling GitHub API when no new results are returned
         break if (ar.length == 0)
-        contributors.push(*ar)
+        # Merge contributors into a single array
+        data.push(*ar)
         page += 1
       end
-
-      contributors.map do |x|
-        x['name'] = x['login'] unless x.has_key?('name')
-        x['name'] = x['login'] if x['name'] == ""
-
-        x
+      # Loop in returned results array
+      result = {}
+      for c in data
+        # Skip incomplete / invalid data and set contributor's name
+        next if !c.is_a?(Hash)
+        next if !c.has_key?('contributions') or !c['contributions'].is_a?(Integer) or c['contributions'] > 1000000
+        if c.has_key?('name') and c['name'].is_a?(String) and /^[A-Za-z0-9\-]{1,150}$/.match(c['name'])
+          name = c['name']
+        elsif c.has_key?('login') and c['login'].is_a?(String) and /^[A-Za-z0-9\-]{1,150}$/.match(c['login'])
+          name = c['login']
+        else
+          next
+        end
+        # Replace name by its corresponding alias if defined in _config.yml
+        name = aliases[name] if aliases.has_key?(name)
+        # Assign variables
+        x = {}
+        x['name'] = name
+        x['contributions'] = c['contributions']
+        # Set gravatar_id when available
+        if c.has_key?('gravatar_id') and c['gravatar_id'].is_a?(String) and /^[A-Za-z0-9\-]{1,150}$/.match(c['gravatar_id'])
+          x['gravatar_id'] = c['gravatar_id']
+        end
+        # Set login when available
+        if c.has_key?('login') and c['login'].is_a?(String) and /^[A-Za-z0-9\-]{1,150}$/.match(c['login'])
+          x['login'] = c['login']
+        end
+        # Add new contributor to the array, or increase contributions if it already exists
+        if result.has_key?(name)
+          result[name]['contributions'] += x['contributions']
+        else
+          result[name] = x
         end
       end
-
-    def merge_contributors(contributors, aliases)
-      contributors = contributors.map do |c|
-        c['name'] = aliases[c['name']] if aliases.has_key?(c['name'])
-
-        c
+      # Generate final ordered contributors array
+      result.each do |key, value|
+        contributors.push(value)
       end
-
-      hoaoh = contributors.reduce({}) do |result, item|
-        result.merge({ item['name'] => [item] }) { |key, old, new| old[0]['contributions'] += new[0]['contributions']; old }
-      end
-
-      hoaoh.values.map { |sublist|
-        sublist.reduce({}) do |merged,h|
-          merged.merge(h) do |key,old,new| (key=='name' ? old : old+new) end
-        end
-      }.flatten
+      contributors.sort_by{|c| - c['contributions']}
     end
 
     def generate(site)
+      # Set site.contributors global variables for liquid/jekyll
       class << site
         attr_accessor :contributors
-
         alias contrib_site_payload site_payload
         def site_payload
           h = contrib_site_payload
@@ -63,8 +90,8 @@ module Jekyll
           h
         end
       end
-
-      site.contributors = merge_contributors(fetch_contributors(), site.config['aliases']).sort_by{|c| - c['contributions']}
+      # Populate site.contributors array
+      site.contributors = contributors(site.config['aliases'])
     end
 
   end

_templates/development.html

@@ -77,7 +77,7 @@ id: development
   <div class="contributors">{% for c in site.contributors %}
     <span>
       {% if c.gravatar_id %}<img class="icon" height="16" width="16" src="https://secure.gravatar.com/avatar/{{c.gravatar_id}}?s=140&amp;d=mm" alt="icon" />{% else %}<img class="icon" height="16" width="16" alt="icon" />{% endif %}
-      {% if c.login %}<a href="https://github.com/{{c.login}}">{{ c.name }} ({{ c.contributions }})</a>{% else %}{{ c.name }} ({{ c.contributions }}){% endif %}
+      {% if c.login %}<a href="https://github.com/{{c.login}}">{{ c.name | htmlescape }} ({{ c.contributions }})</a>{% else %}<a>{{ c.name | htmlescape }} ({{ c.contributions }})</a>{% endif %}
     </span>{% endfor %}
   </div>
 </section>