Adding functionality for fetching code from github

hack for 1.8.7

Don't miss test_markup's relative require

need some food now

lib/gollum/gitcode.rb

@@ -0,0 +1,46 @@
+require 'net/http'
+require 'uri'
+require 'open-uri'
+
+module Gollum
+  class Gitcode
+    def initialize path
+      raise(ArgumentError, 'path is nil or empty') if path.nil? or path.empty?
+      @uri = URI::HTTP.build({ 
+        :path   => self.unchomp(path), 
+        :host   => 'raw.github.com', 
+        :scheme => 'https',
+        :port   => 443 })
+    end
+
+    def contents
+      @contents ||= self.req @uri
+      #req @uri
+    end
+
+    def unchomp p
+      p[0] == '/' ? p : ('/' + p)
+    end
+
+    def req uri, cut = 1
+      #puts uri.to_s
+      return "Too many redirects or retries" if cut >= 10
+      http = Net::HTTP.new uri.host, uri.port
+      http.use_ssl = true
+      resp = http.get uri.path, {
+        'Accept'        => 'text/plain',
+        'Cache-Control' => 'no-cache',
+        'Connection'    => 'keep-alive',
+        'Host'          => uri.host,
+        'User-Agent'    => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:15.0) Gecko/20100101 Firefox/15.0'
+      }
+      code = resp.code.to_i
+      return resp.body if code == 200
+      return "Not Found" if code == 404
+      return "Unhandled Response Code #{code}" unless code == 304 or not resp.header['location'].nil?
+      loc = URI.parse resp.header['location']
+      uri2 = loc.relative?() ? (uri + loc) : loc # overloads (+)
+      return req uri2, (cut + 1)
+    end
+  end
+end

lib/gollum/markup.rb

@@ -2,6 +2,7 @@ require 'digest/sha1'
 require 'cgi'
 require 'pygments'
 require 'base64'
+require File.expand_path( '../gitcode', __FILE__ )
 
 # initialize Pygments
 Pygments.start
@@ -50,6 +51,7 @@ module Gollum
 
       data = @data.dup
       data = extract_metadata(data)
+      data = extract_gitcode(data)
       data = extract_code(data)
       data = extract_tex(data)
       data = extract_wsd(data)
@@ -449,6 +451,20 @@ module Gollum
       end
     end
 
+    #########################################################################
+    #
+    # Gitcode - fetch code from github search path and replace the contents
+    #           to a code-block that gets run the next parse.
+    #
+    #########################################################################
+
+    def extract_gitcode data
+      data.gsub /^[ \t]*``` ?(\w+):(.+)```$/ do
+        gc = Gollum::Gitcode.new $2
+        "```#{$1}\n#{gc.contents}\n```"
+      end
+    end
+
     #########################################################################
     #
     # Code