从多看阅读的 **wifi 传书** 中下载上传的文件

download_duokan_files.rb

# encoding: utf-8

# ----------------------------------------
# 最终的解决方案是利用这个脚本生成的URL，
# 通过迅雷下载所有的文件
# ----------------------------------------

Encoding.default_internal = Encoding::UTF_8
Encoding.default_external = Encoding::UTF_8

require 'open-uri'
require 'json'

DOMAIN = '192.168.1.104'
PORT = '12121'
REMOTE_ROOT = "http://#{DOMAIN}:#{PORT}/files"
FAILURES = []

def download(url, count)
	if url.empty?
		return
	end

	fileName = /([^\/]+)$/.match(url)[0]

	if !File.exists?(fileName)
		puts "[INFO] Downloading No.#{count} '#{fileName}'"

		uri = URI::encode(url.strip)
		puts "[INFO] --> #{uri}"

		failed = false

		begin
			data = open(uri, 'User-Agent' => 'ruby'){|f| f.read} 
		rescue Exception => e
			puts "[WARNING] Unable to download '#{fileName}'"
			puts "[WARNING] #{e}"
			failed = true
		end
		
		if !failed
			file = File.new fileName, 'w+'
			file.binmode 
			file << data 
			file.flush 
			file.close
		else
			FAILURES.push(fileName)
		end
	else
		puts "[INFO] File exists '#{fileName}'"
	end
end

def parse(url)
	if url.empty?
		return
	end

	uri = URI::encode(url.strip)
	data = open(uri, 'User-Agent' => 'ruby'){|f| f.read} 
	files = JSON.parse(data)

	return files.map{ |file|
			file["name"]
		};
end

def main
	file_names = parse(REMOTE_ROOT).sort.reverse
	
	puts "#{file_names.count} files to download"

	count = 0
	while (file_name = file_names.pop) != nil do
		count += 1
		download("#{REMOTE_ROOT}/#{file_name}", count)
	end
end

main

puts FAILURES