Merge pull request #219 from ibash/master

Adding the gist -r <id> command to read a gist

Author: ConradIrwin

bin/gist

@@ -49,6 +49,7 @@ original gist with the same GitHub account.
 
 Usage: #{executable_name} [-o|-c|-e] [-p] [-s] [-R] [-d DESC] [-a] [-u URL] [-P] [-f NAME|-t EXT]* FILE*
        #{executable_name} --login
+       #{executable_name} [-l|-r]
 
   EOS
 
@@ -118,6 +119,10 @@ Usage: #{executable_name} [-o|-c|-e] [-p] [-s] [-R] [-d DESC] [-a] [-u URL] [-P]
     options[:list] = user
   end
 
+  opts.on("-r", "--read ID [FILENAME]", "Read a gist and print out the contents") do |id|
+    options[:read] = id
+  end
+
   opts.on_tail("-h","--help", "Show this message.") do
     puts opts
     exit
@@ -156,6 +161,12 @@ begin
     exit
   end
 
+  if options.key? :read
+    file_name = ARGV.first
+    Gist.read_gist(options[:read], file_name)
+    exit
+  end
+
   if options[:paste]
     puts Gist.gist(Gist.paste, options)
   else

lib/gist.rb

@@ -201,6 +201,28 @@ def list_all_gists(user = "")
 
   end
 
+  def read_gist(id, file_name=nil)
+    url = "#{base_path}/gists/#{id}"
+    request = Net::HTTP::Get.new(url)
+    response = http(api_url, request)
+
+    if response.code == '200'
+      body = JSON.parse(response.body)
+      files = body["files"]
+
+      if file_name
+        file = files[file_name]
+        raise Error, "Gist with id of #{id} and file #{file_name} does not exist." unless file
+      else
+        file = files.values.first
+      end
+
+      puts file["content"]
+    else
+      raise Error, "Gist with id of #{id} does not exist."
+    end
+  end
+
   def get_gist_pages(url)
 
     request = Net::HTTP::Get.new(url)