Script to create & edit new jekyll post

added thumbnail generation with RMagick

#!/usr/bin/env ruby

# Script to quickly generate a new post for Jekyll
# 2012 Andrew Evans - http://atevans.com

require "net/http"
require "uri"
require 'RMagick'

def titleize(str)
  str.strip.split(' ').collect(&:capitalize).join(' ')
end

def linkify(str)
  str.strip.downcase.gsub(/\s/, '-').gsub(/[^\w-]/, '')
end

def smart_truncate(str, len = 100)
  str =~ /^([\w\s]*)[\W]/
  mini = $1
  if mini.length > len
    index = mini.rindex(' ', len)
    index = len if index.nil?
    mini = mini[0..index]
  end
  mini.strip
end

def generate_thumbnail(path, filename = nil)
  filename ||= path.split('/').last
  mimage = Magick::Image.read(path).first
  if mimage
    mimage.change_geometry("600x600>") {|cols, rows, img| img }
    thumbnail_path = File.dirname(__FILE__) << "/images/thumbnails/"
    `mkdir -p #{thumbnail_path}`
    thumbnail_path << filename
    mimage.write(thumbnail_path)
    $stderr.puts "Created thumbnail at #{thumbnail_path}"
    return thumbnail_path
  end
  nil
end

unless $stdin.tty?
  content = $stdin.read
else
  content = ""
end

if ARGV.count > 0
  content = ARGV.first.dup
end

unless content.empty?
  page_link = nil
  # if we passed in a url
  if content =~ /(http:|https:)\/\//
    # if it's an image url
    if content =~ /^(http:|https:)\/\/.*(\.png|\.gif|\.jpg|\.jpeg)$/
      filename = content.split('/').last.strip
      path = File.dirname(__FILE__) << "/images/" << filename
      `wget -O #{path} #{content}`
      thumbnail = generate_thumbnail(path)
      thumbnail_path = "/images/thumbnails/" << filename
      link = "/images/" << filename
      page_link = content.strip
      
      imgtitle = filename.split('.').first
      page_link = content.strip
      content = thumbnail.nil? ? "![#{imgtitle}](#{link})" : "![#{imgtitle}](#{thumbnail_path})"
      title = "Image: #{imgtitle}"
      permalink = "image-#{imgtitle}"
    # if it's a regular url
    else
      uri = URI.parse(content)
      title = ""
      http = Net::HTTP.new(uri.host, uri.port)
      http.use_ssl = true if uri.scheme == 'https'
      http.start do |h|
        res = h.request Net::HTTP::Get.new(uri.request_uri)
        if Net::HTTPSuccess
          res.body =~ /<title>([\w\W]*)<\/title>/ 
          title = $1 
          title ||= content
        end
      end
      title.strip!
      content.strip!
      page_link = content
      permalink = linkify(title)
      content = "[#{title}](#{content})"
    end
  # if it's an image on the filesystem
  elsif content =~ /(\.png|\.gif|\.jpg|\.jpeg)$/
    filename = content.split('/').last.strip
    path = File.dirname(__FILE__) << "/images/" << filename
    puts "cp #{content.strip} #{path}"
    `cp #{content.strip} #{path}`
    thumbnail = generate_thumbnail(path)
    thumbnail_path = "/images/thumbnails/" << filename
    link = "/images/" << filename
    page_link = link
    
    imgtitle = filename.split('.').first
    content = thumbnail.nil? ? "![#{imgtitle}](#{link})" : "![#{imgtitle}](#{thumbnail_path})"
    title = "Image: #{imgtitle}"
    permalink = "image-#{imgtitle}"
  # if it's regular text - probably a quote or snippet
  else
    title = smart_truncate(content)
    permalink = linkify(title)
    quote = ""
    content = content.each_line{|s| quote << "> #{s}\n"}
    content = quote
  end
else
  puts "Usage: ./new title " 
  exit
end

d = Time.now.strftime("%Y-%m-%d")
postname = File.dirname(__FILE__) << "/_posts/" << "#{d}-#{permalink}.md"
File.open("#{postname}", "w") do |f|
  f.puts "---", "layout: default", "title: \"#{title}\"", "permalink: \"/#{permalink}.html\"", "date: \"#{d}\""
  f.puts "link: \"#{page_link}\"" unless page_link.nil?
  f.puts "---", content
end
`mate #{postname}`