Yet another script for grab pictures....

getpics.rb

#!/usr/bin/env ruby
require "rubygems"
require "open-uri"
require "fileutils"
require "hpricot"

(puts "Usage: #{File.basename $0} http://link.to.webpage" ; exit 1) if ARGV.size != 1

begin
  imagedir = "images"
  if File.exists?(imagedir)
    File.directory?(imagedir) ? (puts "Warning: image directory is already exists, continue anyway.") : (puts "A file named 'images' is already exists.";exit 1)
  else
    FileUtils.mkdir imagedir
  end
  print "Fetching page..."
  html = Hpricot(open(ARGV[0]).read)
  imagelinks = []
  html.search("//div[@class='entry-body']/").each do |e|
    e.search("//a").each do |a|
      imagelinks << a.attributes['href'] if a.search("img").any?
    end
  end
  puts "Done!\nParseing page...#{imagelinks.size} images."
  FileUtils.cd(imagedir) do
    index = 1
    imagelinks.each do |link|
      print "Fetching image page #{index}..."
      html = Hpricot(open(link).read)
      puts "Done!"
      html.search("//body/p/img").each do |img|
        print "Fetching image #{index}..."
        name = img.attributes['alt'].split(" ")[0] + "_" + index.to_s + ".jpg"
        ilink = img.attributes['src']
        open(ilink) { |infile| open(name, "wb") { |f| f.write infile.read } }
        puts "Done!"
      end  
      index += 1
    end
  end
  puts "\nAll Done!"
rescue Exception => e
  puts "Unknown error: #{e.message}"
end