Attempt by Patrik Bóna

.rspec

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+--format documentation
+--no-profile
+--color

Gemfile

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+source 'https://rubygems.org'
+ruby '2.0.0'
+
+gem 'rspec'
+gem 'webmock'
+gem 'nokogiri'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.3.5)
+    crack (0.4.1)
+      safe_yaml (~> 0.9.0)
+    diff-lcs (1.2.4)
+    mini_portile (0.5.1)
+    nokogiri (1.6.0)
+      mini_portile (~> 0.5.0)
+    rspec (2.14.1)
+      rspec-core (~> 2.14.0)
+      rspec-expectations (~> 2.14.0)
+      rspec-mocks (~> 2.14.0)
+    rspec-core (2.14.5)
+    rspec-expectations (2.14.2)
+      diff-lcs (>= 1.1.3, < 2.0)
+    rspec-mocks (2.14.3)
+    safe_yaml (0.9.5)
+    webmock (1.13.0)
+      addressable (>= 2.2.7)
+      crack (>= 0.3.2)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  nokogiri
+  rspec
+  webmock

bin/shakespeare_analyzer.rb

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+#!/usr/bin/env ruby
+
+require_relative '../lib/shakespeare_analyzer.rb'
+
+DEFAULT_XML_URL = 'http://www.ibiblio.org/xml/examples/shakespeare/macbeth.xml'
+
+analyzer = ShakespeareAnalyzer.new(DEFAULT_XML_URL)
+analyzer.run

lib/shakespeare_analyzer.rb

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+require 'open-uri'
+require_relative 'xml_parser'
+
+class ShakespeareAnalyzer
+  def initialize(uri)
+    @file_content = get_content_from_uri(uri)
+  end
+
+  def run
+    print_speakers_sorted_by_line_count
+  end
+
+  private
+
+  def get_content_from_uri(uri)
+    open(uri, proxy: ENV['http_proxy']).read
+  end
+
+  def print_speakers_sorted_by_line_count
+    xml_parser.speakers_sorted_by_line_count.each do |speaker, lines|
+      puts "#{lines} #{speaker}"
+    end
+  end
+
+  def xml_parser
+    @_xml_parser ||= XmlParser.new(@file_content)
+  end
+end

lib/xml_parser.rb

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+require 'nokogiri'
+
+class XmlParser
+  def initialize(xml)
+    @doc = Nokogiri.XML(xml)
+  end
+
+  def speakers_sorted_by_line_count
+    speakers_with_line_count.sort_by { |_key, value| value }.reverse
+  end
+
+  private
+
+  def speakers_with_line_count
+    Hash[*speakers.map { |speaker| [speaker, count_lines_by_speaker(speaker)] }.flatten]
+  end
+
+  def speakers
+    @doc.css('PLAY SPEAKER').map { |speaker| speaker.text }.uniq
+  end
+
+  def count_lines_by_speaker(speaker)
+    @doc.css("PLAY SPEECH:has(SPEAKER[text()='#{speaker}']) LINE").count
+  end
+end

output.txt

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+719 MACBETH
+265 LADY MACBETH
+212 MALCOLM
+180 MACDUFF
+135 ROSS
+113 BANQUO
+74 LENNOX
+70 DUNCAN
+62 First Witch
+46 Porter
+45 Doctor
+41 LADY MACDUFF
+39 HECATE
+35 Sergeant
+30 First Murderer
+30 SIWARD
+27 Third Witch
+27 Second Witch
+24 ALL
+23 Gentlewoman
+23 Messenger
+21 Lord
+21 ANGUS
+20 Son
+15 Second Murderer
+12 MENTEITH
+11 Old Man
+11 CAITHNESS
+10 DONALBAIN
+8 Third Murderer
+7 YOUNG SIWARD
+5 Third Apparition
+5 SEYTON
+5 Servant
+4 Second Apparition
+3 Lords
+2 First Apparition
+2 FLEANCE
+2 Both Murderers
+1 ATTENDANT
+1 Soldiers

spec/shakespeare_analyzer_spec.rb

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+require 'spec_helper'
+require 'shakespeare_analyzer'
+require 'stringio'
+
+describe ShakespeareAnalyzer do
+  describe '#initialize' do
+    it 'reads provided URI and stores its content to @file_content' do
+      stub_request(:get, 'http://www.example.com/test_file.txt').to_return(body: 'This is just a test file!')
+      analyzer = ShakespeareAnalyzer.new('http://www.example.com/test_file.txt')
+      expect(analyzer.instance_variable_get(:@file_content)).to eq 'This is just a test file!'
+    end
+  end
+
+  describe '#run' do
+    it 'prints list of speakers sorted by line count' do
+      test_file = File.dirname(__FILE__) + '/test_files/test.xml'
+      stub_request(:get, 'http://www.example.com/test.xml').to_return(body: File.read(test_file))
+      analyzer = ShakespeareAnalyzer.new('http://www.example.com/test.xml')
+      output = capture_stdout { analyzer.run }
+      expect(output).to eq "4 FourLiner\n3 ThreeLiner\n2 TwoLiner\n1 Liner\n"
+    end
+  end
+end
+
+def capture_stdout &block
+  old_stdout = $stdout
+  fake_stdout = StringIO.new
+  $stdout = fake_stdout
+  block.call
+  fake_stdout.string
+ensure
+  $stdout = old_stdout
+end

spec/spec_helper.rb

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+require 'webmock/rspec'

spec/test_files/test.xml

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+<?xml version="1.0"?>
+<!DOCTYPE PLAY SYSTEM "play.dtd">
+
+<PLAY>
+  <ACT>
+    <SCENE>
+      <SPEECH>
+        <SPEAKER>Liner</SPEAKER>
+        <LINE>Nothing more to say.</LINE>
+      </SPEECH>
+      <SPEECH>
+        <SPEAKER>TwoLiner</SPEAKER>
+        <SPEAKER>FourLiner</SPEAKER>
+        <LINE>Hello!</LINE>
+        <LINE>World!</LINE>
+      </SPEECH>
+      <SPEECH>
+        <SPEAKER>ThreeLiner</SPEAKER>
+        <LINE>One</LINE>
+      </SPEECH>
+    </SCENE>
+  </ACT>
+  <ACT>
+    <SCENE>
+      <SPEECH>
+        <SPEAKER>ThreeLiner</SPEAKER>
+        <LINE>Two</LINE>
+      </SPEECH>
+    </SCENE>
+    <SCENE>
+      <SPEECH>
+      <SPEECH>
+        <SPEAKER>ThreeLiner</SPEAKER>
+        <SPEAKER>FourLiner</SPEAKER>
+        <LINE>Three!</LINE>
+      </SPEECH>
+        <SPEAKER>FourLiner</SPEAKER>
+        <LINE>Three!</LINE>
+      </SPEECH>
+    </SCENE>
+  </ACT>
+</PLAY>

spec/xml_parser_spec.rb

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+require 'spec_helper'
+require 'xml_parser'
+
+describe XmlParser do
+  describe '#initialize' do
+    it 'instantiates @doc with Nokogiri XML parser' do
+      doc = XmlParser.new(nil).instance_variable_get(:@doc)
+      expect(doc.instance_of?(Nokogiri::XML::Document)).to be true
+    end
+  end
+
+  describe '#speakers_sorted_by_line_count' do
+    it 'returns hash of speakers with line count sorted by line count' do
+      filename = File.dirname(__FILE__) + '/test_files/test.xml'
+      xml_parser = XmlParser.new(File.read(filename))
+      expect(xml_parser.speakers_sorted_by_line_count.to_a).to eq({'FourLiner' => 4, 'ThreeLiner' => 3, 'TwoLiner' => 2, 'Liner' => 1}.to_a)
+    end
+  end
+end