10 Word Count Puzzle Solution

lib-index.coffee

through2 = require 'through2'


module.exports = ->
  words = 0
  lines = 1
  transform = (chunk, encoding, cb) ->

    # Count lines
    if chunk.match(/\n/mg)
      lines = chunk.match(/\n/mg).length

    parsedInput = filterQuotedWords (chunk)
    chunk = parsedInput.remainingStirng

    tokens = []
    if chunk.length > 0
      # Split camel case word into two and rempve trainling space or new line
      chunk = chunk.replace(/([a-z])([A-Z])/g, '$1 $2').replace(/(\n|\s)$/, '')

      # Replace multiple space and new lines with white space and split string into words
      tokens = chunk.replace(/((\s)+|(\n)+)/g,' ').replace( /\n/g, " ").split(' ')

      words = tokens.length

    if(parsedInput.quotedWords)
      totalWords  = parsedInput.quotedWords.concat tokens
      words = totalWords.length

    return cb()

  flush = (cb) ->
    this.push {words, lines}
    this.push null
    return cb()

  ###*
   * Function to separate quoted string as single word
   * @param {string} Sting
   * @return {array} Array of double quoted words and remaining string (withpout doubled quoted words)
   ###
  filterQuotedWords = (input) ->
    output = false
    quotedStings = input.match(/".*?"/g)
    if(quotedStings && quotedStings.length > 0)
      output = quotedStings.map((v, i) ->
        input = input.replace(v,'')
        v.replace (/\"/mg), ''
      )
    quotedWords : output, remainingStirng : input
  return through2.obj transform, flush

test-fixtures-18,44.txt

The
"Quick Brown Fox"
jumps over the lazy dog
fdcf "cdsa" vwds "casz"
cdsdf
fdcf "cdsa" vwds "casz"
fdcf "cdsa" vwds "casz"
"csaxz" "cwdsa" "adcsxz"
csaxz asdx sasz "casxz"
"ascxz" "fedsacxz"
"ascxz" "fedsacxz"
"ascxz" "fedsacxz"
"ascxz" "fedsacxz"
"csaxz/casxz" "dsacxz"
"Hello" Sp "How are you" Manne
"HelloSP"

ManneCheema

test-index.coffee

assert = require 'assert'
WordCount = require '../lib'
fs = require('fs')


helper = (input, expected, done) ->
  pass = false
  counter = new WordCount()

  counter.on 'readable', ->
    return unless result = this.read()
    assert.deepEqual result, expected
    assert !pass, 'Are you sure everything works as expected?'
    pass = true

  counter.on 'end', ->
    if pass then return done()
    done new Error 'Looks like transform fn does not work'

  counter.write input
  counter.end()


describe '10-word-count', ->

  it 'should count a single word', (done) ->
    input = 'test'
    expected = words: 1, lines: 1
    helper input, expected, done

  it 'should count words in a phrase', (done) ->
    input = 'this is a basic test'
    expected = words: 5, lines: 1
    helper input, expected, done

  it 'should count quoted characters as a single word', (done) ->
    input = '"this is one word!"'
    expected = words: 1, lines: 1
    helper input, expected, done

  it 'should count camel cased word as two word', (done) ->
    input = 'TheQuick
    BrownFox
    jumps
    OverTheLazy
    dog'
    expected = words: 9, lines: 1
    helper input, expected, done

  it 'should count 1 line and 9 words ', (done) ->
  	fs.readFile "#{__dirname}/fixtures/1,9,44.txt", 'utf8', (err, data) ->
	     if err then return throw err
      expected = words: 9, lines: 1
      helper data, expected, done

  it 'shoud count lines in an input string', (done) ->
  	fs.readFile "#{__dirname}/fixtures/5,9,40.txt", 'utf8', (err, data) ->
	     if err then return throw err
      expected = words: 9, lines: 5
      helper data, expected, done

  it 'shoud count quotes string as one word ', (done) ->
  	fs.readFile "#{__dirname}/fixtures/18,44.txt", 'utf8', (err, data) ->
	     if err then return throw err
      expected = words: 44, lines: 18
      helper data, expected, done

  # !!!!!
  # Make the above tests pass and add more tests!
  # !!!!!

#10 Word count puzzle solution

Replace lib/index.coffee with lib-index.coffee file and rename file to index.coffee
Replace test/index.coffee with test-index.coffee file and rename file to index.coffee
Add test-fixtures-18,44.txtfile in fixtures folder and rename file to18,44.txt`