poster.rb

#!/usr/bin/env ruby
#
# I write this script to post my personl blog codemacro.com posts to my cppblog.com/kevinlynx
# Kevin Lynx 8.7.2012
#
require 'nokogiri'
require 'open-uri'
require 'xmlrpc/client'
require 'yaml'

class MetaWeblogClient < XMLRPC::Client
  def initialize(username, password, host, url)
    super(host, url)
    @username = username
    @password = password
  end

  def getPost(post_id)
    call("metaWeblog.getPost", "#{post_id}", "#{@username}", "#{@password}")
  end

  def editPost(post_id, post, publish)
    call("metaWeblog.editPost", "#{post_id}", "#{@username}", "#{@password}", post, publish)
  end

  def newPost(post, publish)
    call("metaWeblog.newPost", "0", "#{@username}", "#{@password}", post, publish)
  end

  def getRecentPosts(number)
    call("metaWeblog.getRecentPosts", "0", "#{@username}", "#{@password}", number)
  end

  def newMediaObject(data)
    call("metaWeblog.newMediaObject", "0", "#{@username}", "#{@password}", data)
  end
end

# get post title and content for an octopress post
def post_info(url)
  doc = Nokogiri::HTML(open(url))
  content = doc.css('div.entry-content').to_s
  title = doc.css('header h1.entry-title').inner_html
  categories = doc.css('a.category').collect do |link| link.content end
  return title, content, categories
end

def load_config(file)
  file = File.open(file)
  YAML::load(file)
end

def check_config(config)
    ['host', 'url', 'username', 'password'].each do |key|
      if config[key].nil? 
        return false
      end
    end
    return true
end

def new_post(api, url)
  title, content, categories = post_info(url)
  if title.nil? or content.nil?
    puts "get post info failed at #{url}\n"
    return
  end
  post = { :title => title, :description => content, :categories => categories }
  api.newPost(post, true)
  puts "new post #{title} in #{categories} done\n"
end

def edit_post(api, postid, url)
  title, content, categories = post_info(url)
  if title.nil? or content.nil?
    puts "get post info failed at #{url}\n"
    return
  end
  post = { :title => title, :description => content, :categories => categories }
  api.editPost(postid, post, true)
  puts "edit post #{title} in #{categories} done\n"
end

def main
  file = "rposter.yaml"
  config = load_config(file)
  if not check_config(config)
    puts "config file <#{file}> invalid.\n"
    print_config
    return
  end
  cmd = ARGV[0]
  api = MetaWeblogClient.new(config["username"], config["password"], config["host"], config["url"])
  if cmd == "new" 
    new_post(api, ARGV[1])
  elsif cmd == "edit"
    edit_post(api, ARGV[1], ARGV[2])
  else
    puts "unknown command #{cmd}\n"
  end
end

def print_usage
  usage = %Q{
    Usage: poster cmd cmd-arg
        new post-url
        edit post-id post-url
    need a config file `rposter.yaml' at the same directory
  }
  puts usage
  print_config
end

def print_config
  config = %Q{
    Config sample:
        host: www.cppblog.com
        url: /kevinlynx/services/metaweblog.aspx
        username: kevinlynx
        password: xxxx
  }
  puts config
end

if ARGV.size == 0 
  print_usage
  exit
end
main