Jekyll post creation script - provide a Title & directory of images.

jekyll_create_post.rb

#!/usr/bin/env ruby
require 'optparse'

# check for post title and image directory options
options = {}

OptionParser.new do |parser|
  parser.banner = "Usage: jekyll_create_post.rb [options] [arguments...]"
  parser.separator "This program creates a new Jekyll Post."

  parser.on("-t", "--title POST TITLE", "The title of the jekyll post.") do |v|
    options[:title] = v
  end

  parser.on("-d", "--img_dir IMAGE DIRECTORY", "The directory containing the images.") do |v|
    options[:img_dir] = v
  end

  parser.on("-h", "--help", "Show this help message") do ||
    puts parser
  end

  begin
    # Parse and remove options from ARGV.
    parser.parse!

  rescue OptionParser::ParseError => error
    # Without this rescue, Ruby would print the stack trace
    # of the error. Instead, we want to show the error message,
    # suggest -h or --help, and exit 1.
    $stderr.puts error
    $stderr.puts "(-h or --help will show valid options)"
    exit 1
  end
end

def createJekyllPost(title, photo_dir)
  # create Jekyll friendly markdown filename
  filename = Time.now.strftime("%Y-%m-%d") + "-" + title.downcase.strip.gsub(' ', '-').gsub(/[^\w-]/, '')

  # create the file in _posts
  output = File.open( "./_posts/#{filename}.markdown","w" )

  # file output
  output << "---\n"
  output << "date-range:\n"
  output << "layout: post\n"
  output << "title: #{title}\n"
  output << "images:\n"

  # move to this posts photo dir and include each img
  Dir.glob("assets/photos/#{photo_dir}/*.jpg") do |img|
    output << "   - url: /#{img}\n"
    output << "     alt: \n"
  end
  output << "---\n"
  output << "\n"

  # save file
  output.close
end

# check for options
if [:img_dir, :title].all? {|s| options.key? s}
  createJekyllPost(options[:title], options[:img_dir])
else
  p 'Please include a title and image directory.'
  p '> ruby jekyll_create_post.rb -h'
end