1.
PREMATURE
OPTIMIZATION
The Root of ALL Evil
@akitaonrails
(CODE VERSION)

2.
@akitaonrails

3.
manga-downloadr
-u http://www.mangareader.net/onepunch-man
-d /tmp/manga/one-punch-man
-n one-punch-man

4.
#!/usr/bin/env ruby
$LOAD_PATH.unshift File.join(File.dirname(__FILE__), '..', 'lib')
require 'optparse'
options = { test: false }
option_parser = OptionParser.new do |opts|
opts.banner = "Usage: manga-downloadr [options]"
opts.on("-t", "--test", "Test routine") do |t|
options[:url] = "http://www.mangareader.net/onepunch-man"
options[:name] = "one-punch-man"
options[:directory] = "/tmp/manga-downloadr/one-punch-man"
options[:test] = true
end
opts.on("-u URL", "--url URL",
"Full MangaReader.net manga homepage URL - required") do |v|
options[:url] = v
end
opts.on("-n NAME", "--name NAME",
"slug to be used for the sub-folder to store all manga files - required") do |n|
options[:name] = n
end
opts.on("-d DIRECTORY", "--directory DIRECTORY",
"main folder where all mangas will be stored - required") do |d|
options[:directory] = d
end
opts.on("-h", "--help", "Show this message") do
puts opts
exit
end
end

5.
require 'manga-downloadr'
generator = MangaDownloadr::Workflow.create(options[:url], options[:name],
options[:directory])
generator.fetch_chapter_urls!
generator.fetch_page_urls!
generator.fetch_image_urls!
generator.fetch_images!
generator.compile_ebooks!

6.
require 'manga-downloadr'
generator = MangaDownloadr::Workflow.create(options[:url], options[:name],
options[:directory])
puts "Massive parallel scanning of all chapters "
generator.fetch_chapter_urls!
puts "nMassive parallel scanning of all pages "
generator.fetch_page_urls!
puts "nMassive parallel scanning of all images "
generator.fetch_image_urls!
puts "nTotal page links found: #{generator.chapter_pages_count}"
puts "nMassive parallel download of all page images "
generator.fetch_images!
puts "nCompiling all images into PDF volumes "
generator.compile_ebooks!
puts "nProcess finished."

7.
require 'manga-downloadr'
generator = MangaDownloadr::Workflow.create(options[:url], options[:name],
options[:directory])
unless generator.state?(:chapter_urls)
puts "Massive parallel scanning of all chapters "
generator.fetch_chapter_urls!
end
unless generator.state?(:page_urls)
puts "nMassive parallel scanning of all pages "
generator.fetch_page_urls!
end
unless generator.state?(:image_urls)
puts "nMassive parallel scanning of all images "
generator.fetch_image_urls!
puts "nTotal page links found: #{generator.chapter_pages_count}"
end
unless generator.state?(:images)
puts "nMassive parallel download of all page images "
generator.fetch_images!
end
unless options[:test]
puts "nCompiling all images into PDF volumes "
generator.compile_ebooks!
end
puts "nProcess finished."
MangaDownloadr::Workflow

8.
MangaDownloadr::Workflowmodule MangaDownloadr
ImageData = Struct.new(:folder, :filename, :url)
class Workflow
def initialize(root_url = nil, manga_name = nil, manga_root = nil, options = {})
end
def fetch_chapter_urls!
end
def fetch_page_urls!
end
def fetch_image_urls!
end
def fetch_images!
end
def compile_ebooks!
end
def state?(state)
end
private
def current_state(state)
end
end
end
fetch_chapter_urls!

9.
module MangaDownloadr
ImageData = Struct.new(:folder, :filename, :url)
class Workflow
def initialize(root_url = nil, manga_name = nil, manga_root = nil, options = {})
end
def fetch_chapter_urls!
end
def fetch_page_urls!
end
def fetch_image_urls!
end
def fetch_images!
end
def compile_ebooks!
end
def state?(state)
end
private
def current_state(state)
end
end
end
fetch_chapter_urls!

10.
fetch_chapter_urls!def fetch_chapter_urls!
doc = Nokogiri::HTML(open(manga_root_url))
self.chapter_list = doc.css("#listing a").map { |l| l['href']}
self.manga_title = doc.css("#mangaproperties h1").first.text
current_state :chapter_urls
end

11.
fetch_chapter_urls!def fetch_chapter_urls!
doc = Nokogiri::HTML(open(manga_root_url))
self.chapter_list = doc.css("#listing a").map { |l| l['href']}
self.manga_title = doc.css("#mangaproperties h1").first.text
current_state :chapter_urls
end

12.
def fetch_page_urls!
chapter_list.each do |chapter_link|
response = Typhoeus.get "http://www.mangareader.net#{chapter_link}"
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

13.
def fetch_page_urls!
chapter_list.each do |chapter_link|
begin
response = Typhoeus.get "http://www.mangareader.net#{chapter_link}"
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
rescue => e
puts e
end
end
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

14.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

15.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

16.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

17.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

18.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

19.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

20.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

21.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{chapter_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
pages = chapter_doc.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
chapter_pages.merge!(chapter_link => pages.map { |p| p['value'] })
print '.'
rescue => e
self.fetch_page_urls_errors << { url: chapter_link, error: e, body: response.body }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty?
puts "n Errors fetching page urls:"
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_pages.values.inject(0) { |total, list| total += list.size }
current_state :page_urls
end

22.
def fetch_page_urls!
hydra = Typhoeus::Hydra.new(max_con
chapter_list.each do |chapter_link|
begin
request = Typhoeus::Request.new
request.on_complete do |respons
begin
chapter_doc = Nokogiri::HTM
pages = chapter_doc.xpath("
chapter_pages.merge!(chapte
print '.'
rescue => e
self.fetch_page_urls_errors
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
hydra.run
unless fetch_page_urls_errors.empty
puts "n Errors fetching page url
puts fetch_page_urls_errors
end
self.chapter_pages_count = chapter_
current_state :page_urls
end

23.
def fetch_image_urls!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each do |chapter_key|
chapter_pages[chapter_key].each do |page_link|
begin
request = Typhoeus::Request.new "http://www.mangareader.net#{page_link}"
request.on_complete do |response|
begin
chapter_doc = Nokogiri::HTML(response.body)
image = chapter_doc.css('#img').first
tokens = image['alt'].match("^(.*?)s-s(.*?)$")
extension = File.extname(URI.parse(image['src']).path)
chapter_images.merge!(chapter_key => []) if chapter_images[chapter_key].nil?
chapter_images[chapter_key] << ImageData.new( tokens[1], "#{tokens[2]}#{extension}", image['src'] )
print '.'
rescue => e
self.fetch_image_urls_errors << { url: page_link, error: e }
print 'x'
end
end
hydra.queue request
rescue => e
puts e
end
end
end
hydra.run
unless fetch_image_urls_errors.empty?
puts "nErrors fetching image urls:"
puts fetch_image_urls_errors
end
current_state :image_urls
end

24.
def fetch_images!
hydra = Typhoeus::Hydra.new(max_concurrency: hydra_concurrency)
chapter_list.each_with_index do |chapter_key, chapter_index|
chapter_images[chapter_key].each do |file|
downloaded_filename = File.join(manga_root_folder, file.folder, file.filename)
next if File.exists?(downloaded_filename) # effectively resumes the download list without re-downloading eve
request = Typhoeus::Request.new file.url
request.on_complete do |response|
begin
# download
FileUtils.mkdir_p(File.join(manga_root_folder, file.folder))
File.open(downloaded_filename, "wb+") { |f| f.write response.body }
unless is_test
# resize
image = Magick::Image.read( downloaded_filename ).first
resized = image.resize_to_fit(600, 800)
resized.write( downloaded_filename ) { self.quality = 50 }
GC.start # to avoid a leak too big (ImageMagick is notorious for that, specially on resizes)
end
print '.'
rescue => e
self.fetch_images_errors << { url: file.url, error: e }
print '#'
end
end
hydra.queue request
end
end
hydra.run
unless fetch_images_errors.empty?
puts "nErrors downloading images:"
puts fetch_images_errors
end
current_state :images
end

25.
def compile_ebooks!
folders = Dir[manga_root_folder + "/*/"].sort_by { |element| ary = element.split(" ").last.to_i }
self.download_links = folders.inject([]) do |list, folder|
list += Dir[folder + "*.*"].sort_by { |element| ary = element.split(" ").last.to_i }
end
# concatenating PDF files (250 pages per volume)
chapter_number = 0
while !download_links.empty?
chapter_number += 1
pdf_file = File.join(manga_root_folder, "#{manga_title} #{chapter_number}.pdf")
list = download_links.slice!(0..pages_per_volume)
Prawn::Document.generate(pdf_file, page_size: page_size) do |pdf|
list.each do |image_file|
begin
pdf.image image_file, position: :center, vposition: :center
rescue => e
puts "Error in #{image_file} - #{e}"
end
end
end
print '.'
end
current_state :ebooks
end

26.
manga-downloadr -t
199.69s user 10.30s system 124% cpu 2:48.14 total

27.
manga-downloadr -t
199.69s user 10.30s system 124% cpu 2:48.14 total

28.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
mix.exs

29.
mix.exsdefmodule ExMangaDownloadr.Mixfile do
use Mix.Project
def project do
[app: :ex_manga_downloadr,
version: "1.0.1",
elixir: "~> 1.1",
build_embedded: Mix.env == :prod,
start_permanent: Mix.env == :prod,
escript: [main_module: ExMangaDownloadr.CLI],
deps: deps]
end
# Configuration for the OTP application
#
# Type "mix help compile.app" for more information
def application do
[applications: [:logger, :httpotion, :porcelain],
mod: {PoolManagement, []}]
end
defp deps do
[
{:ibrowse, "~> 4.2.2"},
{:httpotion, "~> 3.0.0"},
{:floki, "~> 0.9.0"},
{:porcelain, "~> 2.0.1"},
{:poolboy, "~> 1.5.1"},
{:mock, "~> 0.1.3", only: :test}
]
end
end
PoolManagement

30.
PoolManagement
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
pool_management.ex

31.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
pool_management.ex

32.
pool_management.exdefmodule PoolManagement do
use Application
def start(_type, _args) do
PoolManagement.Supervisor.start_link
end
end
Supervisor

33.
Supervisor
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
supervisor.ex

34.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
supervisor.ex

35.
supervisor.exdefmodule PoolManagement.Supervisor do
use Supervisor
def start_link do
Supervisor.start_link(__MODULE__, [])
end
def init([]) do
pool_size = System.get_env("POOL_SIZE") || "50"
pool_options = [
name: {:local, :worker_pool},
worker_module: PoolManagement.Worker,
size: String.to_integer(pool_size),
max_overflow: 0
]
children = [
supervisor(Task.Supervisor, [[name: Fetcher.TaskSupervisor,
strategy: :transient, max_restarts: 10]]),
:poolboy.child_spec(:worker_pool, pool_options, [])
]
supervise(children, strategy: :one_for_one)
end
end
Worker

36.
supervisor.exdefmodule PoolManagement.Supervisor do
use Supervisor
def start_link do
Supervisor.start_link(__MODULE__, [])
end
def init([]) do
pool_size = System.get_env("POOL_SIZE") || "50"
pool_options = [
name: {:local, :worker_pool},
worker_module: PoolManagement.Worker,
size: String.to_integer(pool_size),
max_overflow: 0
]
children = [
supervisor(Task.Supervisor, [[name: Fetcher.TaskSupervisor,
strategy: :transient, max_restarts: 10]]),
:poolboy.child_spec(:worker_pool, pool_options, [])
]
supervise(children, strategy: :one_for_one)
end
end
Worker

37.
supervisor.exdefmodule PoolManagement.Supervisor do
use Supervisor
def start_link do
Supervisor.start_link(__MODULE__, [])
end
def init([]) do
pool_size = System.get_env("POOL_SIZE") || "50"
pool_options = [
name: {:local, :worker_pool},
worker_module: PoolManagement.Worker,
size: String.to_integer(pool_size),
max_overflow: 0
]
children = [
supervisor(Task.Supervisor, [[name: Fetcher.TaskSupervisor,
strategy: :transient, max_restarts: 10]]),
:poolboy.child_spec(:worker_pool, pool_options, [])
]
supervise(children, strategy: :one_for_one)
end
end
Worker

38.
supervisor.exdefmodule PoolManagement.Supervisor do
use Supervisor
def start_link do
Supervisor.start_link(__MODULE__, [])
end
def init([]) do
pool_size = System.get_env("POOL_SIZE") || "50"
pool_options = [
name: {:local, :worker_pool},
worker_module: PoolManagement.Worker,
size: String.to_integer(pool_size),
max_overflow: 0
]
children = [
supervisor(Task.Supervisor, [[name: Fetcher.TaskSupervisor,
strategy: :transient, max_restarts: 10]]),
:poolboy.child_spec(:worker_pool, pool_options, [])
]
supervise(children, strategy: :one_for_one)
end
end
Worker

39.
Worker
Supervisor
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
worker.ex

40.
Supervisor
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
worker.ex

41.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

42.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

43.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

44.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

45.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

46.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end

47.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files

48.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files

49.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files

50.
worker.exdefmodule PoolManagement.Worker do
use GenServer
# Public APIs
def index_page(url, source) do
end
def chapter_page([chapter_link, source]) do
end
def page_image([page_link, source]) do
end
def page_download_image(image_data, directory) do
end
# internal GenServer implementation
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
end
def handle_call({:page_image, page_link, source}, _from, state) do
end
def handle_call({:page_download_image, image_data, directory}, _from, state)
end
## Helper functions
defp manga_source(source, module) do
case source do
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
end
end
defp download_image({image_src, image_filename}, directory) do
end
end
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files

51.
POOL

52.
defmodule PoolManagement.Worker do
use GenServer
...
def chapter_page([chapter_link, source]) do
Task.Supervisor.async(Fetcher.TaskSupervisor, fn ->
:poolboy.transaction :worker_pool, fn(server) ->
GenServer.call(server, {:chapter_page, chapter_link, source},
@genserver_call_timeout)
end, @task_async_timeout
end)
end
...
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
links = source
|> manga_source("ChapterPage")
|> apply(:pages, [chapter_link])
{:reply, links, state}
end
...
defp manga_source(source, module) do
case source do
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
end
end
end
ChapterPage

53.
defmodule PoolManagement.Worker do
use GenServer
...
def chapter_page([chapter_link, source]) do
Task.Supervisor.async(Fetcher.TaskSupervisor, fn ->
:poolboy.transaction :worker_pool, fn(server) ->
GenServer.call(server, {:chapter_page, chapter_link, source},
@genserver_call_timeout)
end, @task_async_timeout
end)
end
...
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
links = source
|> manga_source("ChapterPage")
|> apply(:pages, [chapter_link])
{:reply, links, state}
end
...
defp manga_source(source, module) do
case source do
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
end
end
end
ChapterPage

54.
defmodule PoolManagement.Worker do
use GenServer
...
def chapter_page([chapter_link, source]) do
Task.Supervisor.async(Fetcher.TaskSupervisor, fn ->
:poolboy.transaction :worker_pool, fn(server) ->
GenServer.call(server, {:chapter_page, chapter_link, source},
@genserver_call_timeout)
end, @task_async_timeout
end)
end
...
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
links = source
|> manga_source("ChapterPage")
|> apply(:pages, [chapter_link])
{:reply, links, state}
end
...
defp manga_source(source, module) do
case source do
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
end
end
end
ChapterPage

55.
defmodule PoolManagement.Worker do
use GenServer
...
def chapter_page([chapter_link, source]) do
Task.Supervisor.async(Fetcher.TaskSupervisor, fn ->
:poolboy.transaction :worker_pool, fn(server) ->
GenServer.call(server, {:chapter_page, chapter_link, source},
@genserver_call_timeout)
end, @task_async_timeout
end)
end
...
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
links = source
|> manga_source("ChapterPage")
|> apply(:pages, [chapter_link])
{:reply, links, state}
end
...
defp manga_source(source, module) do
case source do
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
end
end
end
ChapterPage

56.
defmodule PoolManagement.Worker do
use GenServer
...
def chapter_page([chapter_link, source]) do
Task.Supervisor.async(Fetcher.TaskSupervisor, fn ->
:poolboy.transaction :worker_pool, fn(server) ->
GenServer.call(server, {:chapter_page, chapter_link, source},
@genserver_call_timeout)
end, @task_async_timeout
end)
end
...
def handle_call({:chapter_page, chapter_link, source}, _from, state) do
links = source
|> manga_source("ChapterPage")
|> apply(:pages, [chapter_link])
{:reply, links, state}
end
...
defp manga_source(source, module) do
case source do
"mangareader" -> :"Elixir.ExMangaDownloadr.MangaReader.#{module}"
"mangafox" -> :"Elixir.ExMangaDownloadr.Mangafox.#{module}"
end
end
end
ChapterPage

57.
defmodule ExMangaDownloadr.Mangafox.ChapterPage do
require Logger
require ExMangaDownloadr
def pages(chapter_link) do
ExMangaDownloadr.fetch chapter_link, do: fetch_pages(chapter_link)
end
defp fetch_pages(html, chapter_link) do
[_page|link_template] = chapter_link |> String.split("/") |>
Enum.reverse
html
|> Floki.find("div[id='top_center_bar'] option")
|> Floki.attribute("value")
|> Enum.reject(fn page_number -> page_number == "0" end)
|> Enum.map(fn page_number ->
["#{page_number}.html"|link_template]
|> Enum.reverse
|> Enum.join("/")
end)
end
end
ChapterPage

58.
ChapterPage
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
cli.ex

59.
cli.exdefmodule ExMangaDownloadr.CLI do
alias ExMangaDownloadr.Workflow
require ExMangaDownloadr
def main(args) do
args
|> parse_args
|> process
end
...
defp parse_args(args) do
end
defp process(:help) do
end
defp process(directory, url) do
File.mkdir_p!(directory)
File.mkdir_p!("/tmp/ex_manga_downloadr_cache")
manga_name = directory |> String.split("/") |> Enum.reverse |> Enum.at(0)
url
|> Workflow.determine_source
|> Workflow.chapters
|> Workflow.pages
|> Workflow.images_sources
|> Workflow.process_downloads(directory)
|> Workflow.optimize_images
|> Workflow.compile_pdfs(manga_name)
|> finish_process
end
defp process_test(directory, url) do
end
defp finish_process(directory) do
end
end
Workflow

60.
Workflow
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
workflow.ex

61.
workflow.exdefmodule ExMangaDownloadr.Workflow do
alias PoolManagement.Worker
require Logger
def chapters({url, source}) do
end
def pages({chapter_list, source}) do
pages_list = chapter_list
|> Enum.map(&Worker.chapter_page([&1, source]))
|> Enum.map(&Task.await(&1, @await_timeout_ms))
|> Enum.reduce([], fn {:ok, list}, acc -> acc ++ list end)
{pages_list, source}
end
def images_sources({pages_list, source}) do
end
def process_downloads(images_list, directory) do
end
def optimize_images(directory) do
Porcelain.shell("mogrify -resize #{@image_dimensions} #{directory}/*.jpg")
directory
end
def compile_pdfs(directory, manga_name) do
end
end

62.
workflow.exdefmodule ExMangaDownloadr.Workflow do
alias PoolManagement.Worker
require Logger
def chapters({url, source}) do
end
def pages({chapter_list, source}) do
pages_list = chapter_list
|> Enum.map(&Worker.chapter_page([&1, source]))
|> Enum.map(&Task.await(&1, @await_timeout_ms))
|> Enum.reduce([], fn {:ok, list}, acc -> acc ++ list end)
{pages_list, source}
end
def images_sources({pages_list, source}) do
end
def process_downloads(images_list, directory) do
end
def optimize_images(directory) do
Porcelain.shell("mogrify -resize #{@image_dimensions} #{directory}/*.jpg")
directory
end
def compile_pdfs(directory, manga_name) do
end
end

63.
ex_manga_downloadr —test
28.36s user 15.57s system 33% cpu 2:10.28 total

64.
ex_manga_downloadr —test
28.36s user 15.57s system 33% cpu 2:10.28 total

65.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr

66.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr

67.
File.mkdir_p!(directory)
File.mkdir_p!("/tmp/ex_manga_downloadr_cache")
manga_name = directory |> String.split("/") |> Enum.reverse |> Enum.at(0)
url
|> Workflow.determine_source
|> Workflow.chapters
|> Workflow.pages
|> Workflow.images_sources
|> Workflow.process_downloads(directory)
|> Workflow.optimize_images
|> Workflow.compile_pdfs(manga_name)
|> finish_process
end

68.
def run
Dir.mkdir_p @config.download_directory
pipe Steps.fetch_chapters(@config)
.>> Steps.fetch_pages(@config)
.>> Steps.fetch_images(@config)
.>> Steps.download_images(@config)
.>> Steps.optimize_images(@config)
.>> Steps.prepare_volumes(@config)
.>> unwrap
puts "Done!"
end
File.mkdir_p!(directory)
File.mkdir_p!("/tmp/ex_manga_downloadr_cache")
manga_name = directory |> String.split("/") |> Enum.reverse |> Enum.at(0)
url
|> Workflow.determine_source
|> Workflow.chapters
|> Workflow.pages
|> Workflow.images_sources
|> Workflow.process_downloads(directory)
|> Workflow.optimize_images
|> Workflow.compile_pdfs(manga_name)
|> finish_process
end

69.
defmodule ExMangaDownloadr.MangaReader.IndexPage do
require Logger
require ExMangaDownloadr
def chapters(manga_root_url) do
ExMangaDownloadr.fetch manga_root_url, do: collect
end
defp collect(html) do
{fetch_manga_title(html), fetch_chapters(html)}
end
defp fetch_manga_title(html) do
html
|> Floki.find("#mangaproperties h1")
|> Floki.text
end
defp fetch_chapters(html) do
html
|> Floki.find("#listing a")
|> Floki.attribute("href")
end
end

70.
defmodule ExMangaDownloadr.MangaReader.IndexPage do
require Logger
require ExMangaDownloadr
def chapters(manga_root_url) do
ExMangaDownloadr.fetch manga_root_url, do: collect
end
defp collect(html) do
{fetch_manga_title(html), fetch_chapters(html)}
end
defp fetch_manga_title(html) do
html
|> Floki.find("#mangaproperties h1")
|> Floki.text
end
defp fetch_chapters(html) do
html
|> Floki.find("#listing a")
|> Floki.attribute("href")
end
end

71.
defmodule ExMangaDownloadr.MangaReader.IndexPage do
require Logger
require ExMangaDownloadr
def chapters(manga_root_url) do
ExMangaDownloadr.fetch manga_root_url, do: collect
end
defp collect(html) do
{fetch_manga_title(html), fetch_chapters(html)}
end
defp fetch_manga_title(html) do
html
|> Floki.find("#mangaproperties h1")
|> Floki.text
end
defp fetch_chapters(html) do
html
|> Floki.find("#listing a")
|> Floki.attribute("href")
end
end

72.
require "./downloadr_client"
require "xml"
module CrMangaDownloadr
class Chapters < DownloadrClient
def initialize(@domain, @root_uri : String, @cache_http = false)
super(@domain, @cache_http)
end
def fetch
html = get(@root_uri)
nodes = html.xpath_nodes(
"//table[contains(@id, 'listing')]//td//a/@href")
nodes.map { |node| node.text.as(String) }
end
end
end
DownloadrClient

73.
require "./downloadr_client"
require "xml"
module CrMangaDownloadr
class Chapters < DownloadrClient
def initialize(@domain, @root_uri : String, @cache_http = false)
super(@domain, @cache_http)
end
def fetch
html = get(@root_uri)
nodes = html.xpath_nodes(
"//table[contains(@id, 'listing')]//td//a/@href")
nodes.map { |node| node.text.as(String) }
end
end
end
DownloadrClient

74.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

75.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

76.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

77.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

78.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

79.
DownloadrClient
module CrMangaDownloadr
class DownloadrClient
@http_client : HTTP::Client
def initialize(@domain : String, @cache_http = false)
end
def get(uri : String)
cache_path = "/tmp/cr_manga_downloadr_cache/#{cache_filename(uri)}"
while true
begin
response = if @cache_http && File.exists?(cache_path)
body = File.read(cache_path)
HTTP::Client::Response.new(200, body)
else
@http_client.get(uri, headers: HTTP::Headers{
"User-Agent" => CrMangaDownloadr::USER_AGENT })
end
case response.status_code
when 301
uri = response.headers["Location"]
when 200
if @cache_http && !File.exists?(cache_path)
File.open(cache_path, "w") do |f|
f.print response.body
end
end
return XML.parse_html(response.body)
end
rescue IO::Timeout
puts "Sleeping over #{uri}"
sleep 1
end
end
end
end
end

80.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

81.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

82.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

83.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

84.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

85.
require "fiberpool"
module CrMangaDownloadr
struct Concurrency
def initialize(@config : Config, @turn_on_engine = true); end
def fetch(collection : Array(A)?, engine_class : E.class,
&block : A, E? -> Array(B)?) : Array(B)
results = [] of B
if collection
pool = Fiberpool.new(collection,
@config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain,
@config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
end
results
end
end
end
fetch
Concurrency

86.
fetch
Concurrency
module CrMangaDownloadr
class Workflow
end
module Steps
def self.fetch_chapters(config : Config)
end
def self.fetch_pages(chapters : Array(String)?, config : Config)
puts "Fetching pages from all chapters ..."
reactor = Concurrency.new(config)
reactor.fetch(chapters, Pages) do |link, engine|
engine.try(&.fetch(link))
end
end
def self.fetch_images(pages : Array(String)?, config : Config)
end
def self.download_images(images : Array(Image)?, config : Config)
end
def self.optimize_images(downloads : Array(String), config : Config)
end
def self.prepare_volumes(downloads : Array(String), config : Config)
end
end
end

87.
fetch
Concurrency
module CrMangaDownloadr
class Workflow
end
module Steps
def self.fetch_chapters(config : Config)
end
def self.fetch_pages(chapters : Array(String)?, config : Config)
puts "Fetching pages from all chapters ..."
reactor = Concurrency.new(config)
reactor.fetch(chapters, Pages) do |link, engine|
engine.try(&.fetch(link))
end
end
def self.fetch_images(pages : Array(String)?, config : Config)
end
def self.download_images(images : Array(Image)?, config : Config)
end
def self.optimize_images(downloads : Array(String), config : Config)
end
def self.prepare_volumes(downloads : Array(String), config : Config)
end
end
end

88.
cr_manga_downloadr -t
0.28s user 0.53s system 0% cpu 1:52.45 total

89.
cr_manga_downloadr -t
0.28s user 0.53s system 0% cpu 1:52.45 total

90.
.
!"" _build
# $"" ...
!"" config
# $"" config.exs
!"" deps
# !"" ...
!"" ex_manga_downloadr
!"" lib
# !"" ex_manga_downloadr
# # !"" cli.ex
# # !"" mangafox
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" mangareader
# # # !"" chapter_page.ex
# # # !"" index_page.ex
# # # $"" page.ex
# # !"" pool_management
# # # !"" supervisor.ex
# # # $"" worker.ex
# # $"" workflow.ex
# !"" ex_manga_downloadr.ex
# $"" pool_management.ex
!"" mix.exs
!"" mix.lock
!"" README.md
$"" test
!"" ex_manga_downloadr
# !"" mangafox_test.exs
# $"" mangareader_test.exs
!"" ex_manga_downloadr_test.exs
$"" test_helper.exs
61 directories, 281 files
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr

91.
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr
.
!"" bin
# $"" manga-downloadr
!"" Gemfile
!"" Gemfile.lock
!"" lib
# !"" manga-downloadr
# # !"" chapters.rb
# # !"" concurrency.rb
# # !"" downloadr_client.rb
# # !"" image_downloader.rb
# # !"" page_image.rb
# # !"" pages.rb
# # !"" records.rb
# # !"" version.rb
# # $"" workflow.rb
# $"" manga-downloadr.rb
!"" LICENSE.txt
!"" manga-downloadr.gemspec
!"" Rakefile
!"" README.md
$"" spec
!"" fixtures
# !"" ...
!"" manga-downloadr
# !"" chapters_spec.rb
# !"" concurrency_spec.rb
# !"" image_downloader_spec.rb
# !"" page_image_spec.rb
# $"" pages_spec.rb
$"" spec_helper.rb

92.
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr
.
!"" bin
# $"" manga-downloadr
!"" Gemfile
!"" Gemfile.lock
!"" lib
# !"" manga-downloadr
# # !"" chapters.rb
# # !"" concurrency.rb
# # !"" downloadr_client.rb
# # !"" image_downloader.rb
# # !"" page_image.rb
# # !"" pages.rb
# # !"" records.rb
# # !"" version.rb
# # $"" workflow.rb
# $"" manga-downloadr.rb
!"" LICENSE.txt
!"" manga-downloadr.gemspec
!"" Rakefile
!"" README.md
$"" spec
!"" fixtures
# !"" ...
!"" manga-downloadr
# !"" chapters_spec.rb
# !"" concurrency_spec.rb
# !"" image_downloader_spec.rb
# !"" page_image_spec.rb
# $"" pages_spec.rb
$"" spec_helper.rb

93.
.
!"" cr_manga_downloadr
!"" libs
# !"" ...
!"" LICENSE
!"" README.md
!"" shard.lock
!"" shard.yml
!"" spec
# !"" cr_manga_downloadr
# # !"" chapters_spec.cr
# # !"" concurrency_spec.cr
# # !"" image_downloader_spec.cr
# # !"" page_image_spec.cr
# # $"" pages_spec.cr
# !"" fixtures
# # !"" ...
# $"" spec_helper.cr
$"" src
!"" cr_manga_downloadr
# !"" chapters.cr
# !"" concurrency.cr
# !"" downloadr_client.cr
# !"" image_downloader.cr
# !"" page_image.cr
# !"" pages.cr
# !"" records.cr
# !"" version.cr
# $"" workflow.cr
$"" cr_manga_downloadr.cr
.
!"" bin
# $"" manga-downloadr
!"" Gemfile
!"" Gemfile.lock
!"" lib
# !"" manga-downloadr
# # !"" chapters.rb
# # !"" concurrency.rb
# # !"" downloadr_client.rb
# # !"" image_downloader.rb
# # !"" page_image.rb
# # !"" pages.rb
# # !"" records.rb
# # !"" version.rb
# # $"" workflow.rb
# $"" manga-downloadr.rb
!"" LICENSE.txt
!"" manga-downloadr.gemspec
!"" Rakefile
!"" README.md
$"" spec
!"" fixtures
# !"" ...
!"" manga-downloadr
# !"" chapters_spec.rb
# !"" concurrency_spec.rb
# !"" image_downloader_spec.rb
# !"" page_image_spec.rb
# $"" pages_spec.rb
$"" spec_helper.rb

94.
def run
Dir.mkdir_p @config.download_directory
pipe Steps.fetch_chapters(@config)
.>> Steps.fetch_pages(@config)
.>> Steps.fetch_images(@config)
.>> Steps.download_images(@config)
.>> Steps.optimize_images(@config)
.>> Steps.prepare_volumes(@config)
.>> unwrap
puts "Done!"
end

95.
def self.run(config = Config.new)
FileUtils.mkdir_p config.download_directory
CM(config, Workflow)
.fetch_chapters
.fetch_pages(config)
.fetch_images(config)
.download_images(config)
.optimize_images(config)
.prepare_volumes(config)
.unwrap
puts "Done!"
end
def run
Dir.mkdir_p @config.download_directory
pipe Steps.fetch_chapters(@config)
.>> Steps.fetch_pages(@config)
.>> Steps.fetch_images(@config)
.>> Steps.download_images(@config)
.>> Steps.optimize_images(@config)
.>> Steps.prepare_volumes(@config)
.>> unwrap
puts "Done!"
end

96.
# concurrency.cr
pool = Fiberpool.new(collection, @config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain, @config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end

97.
# concurrency.cr
pool = Fiberpool.new(collection, @config.download_batch_size)
pool.run do |item|
engine = if @turn_on_engine
engine_class.new(@config.domain, @config.cache_http)
end
if reply = block.call(item, engine)
results.concat(reply)
end
end
pool = Thread.pool(@config.download_batch_size)
mutex = Mutex.new
results = []
collection.each do |item|
pool.process {
engine = @turn_on_engine ? @engine_klass.new(@config.domain, @config.cache_http) : nil
reply = block.call(item, engine)&.flatten
mutex.synchronize do
results += ( reply || [] )
end
}
end
pool.shutdown

98.
module CrMangaDownloadr
class Pages < DownloadrClient
def fetch(chapter_link : String)
html = get(chapter_link)
nodes = html.xpath_nodes("//div[@id='selectpage']//select[@id='pageMenu']//option")
nodes.map { |node| "#{chapter_link}/#{node.text}" }
end
end
end

99.
module CrMangaDownloadr
class Pages < DownloadrClient
def fetch(chapter_link : String)
html = get(chapter_link)
nodes = html.xpath_nodes("//div[@id='selectpage']//select[@id='pageMenu']//option")
nodes.map { |node| "#{chapter_link}/#{node.text}" }
end
end
end
module MangaDownloadr
class Pages < DownloadrClient
def fetch(chapter_link)
get chapter_link do |html|
nodes = html.xpath("//div[@id='selectpage']//select[@id='pageMenu']//option")
nodes.map { |node| [chapter_link, node.children.to_s].join("/") }
end
end
end
end

100.
manga-downloadr -t
16.55s user 6.65s system 17% cpu 2:13.86 total

101.
manga-downloadr -t
16.55s user 6.65s system 17% cpu 2:13.86 total

102.
Ruby/Typhoeus 124% CPU 2:38 min

103.
Ruby/Typhoeus 124% CPU 2:38 min
Elixir 33% CPU 2:10 min

104.
Ruby/Typhoeus 124% CPU 2:38 min
Elixir 33% CPU 2:10 min
Crystal 0% CPU 1:52 min

105.
Ruby/Typhoeus 124% CPU 2:38 min
Elixir 33% CPU 2:10 min
Crystal 0% CPU 1:52 min
Ruby 17% CPU 2:13 min

106.
Ruby Typhoeus libcurl

107.
Ruby Typhoeus libcurl
Elixir OTP Poolboy

108.
Ruby Typhoeus libcurl
Elixir OTP Poolboy
Crystal Fibers Fiberpool

109.
Ruby Typhoeus libcurl
Elixir OTP Poolboy
Crystal Fibers Fiberpool
Ruby Thread Thread/Pool

110.
manga-downloadr
ex_manga_downloadr
cr_manga_downloadr

111.
manga-downloadr
ex_manga_downloadr
cr_manga_downloadr
fiberpool
cr_chainable_methods
chainable_methods

112.
PREMATURE
OPTIMIZATION
The Root of ALL Evil

113.
THANKS
@akitaonrails
slideshare.net/akitaonrails