Class: TweetWords

Inherits:
Object
  • Object
show all
Includes:
HTTParty
Defined in:
lib/tweet-words.rb

Class Method Summary collapse

Class Method Details

.findTopWords(strArray) ⇒ Object

This method splits the tweet strings into words, counts each word’s frequency and returns the word set.



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# File 'lib/tweet-words.rb', line 90

def self.findTopWords(strArray)

	countOfWords = Hash.new

	strArray.each do |str|
		if str.nil?
			next
		end

		# strips the string
		strippedString = str.gsub(/[^0-9A-Za-z]/, ' ')

		# splits the string into words
		splitString = strippedString.split(" ")

		# count frequency of words.
		splitString.each do |word|
			if countOfWords.has_key?(word)
				countOfWords[word] += 1
				else
				countOfWords[word] = 1
			end
		end
	end
	return countOfWords
end

.getTweets(screen_name, max = 0) ⇒ Object

This method gets top tweets from Twitter by making an API call via HTTParty. The parameters passed are the ‘screen_name’ which is screen name of the user for whom to return results for and ‘max_id’ which returns results with an ID less than (that is, older than) or equal to the specified ID. The method returns the top 20 tweets as ‘responseTweets’.



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# File 'lib/tweet-words.rb', line 74

def self.getTweets(screen_name, max=0)

	parameters = {:screen_name => screen_name }

	if max > 0
		parameters[:max_id] = max
	end

	responseTweets = get('http://api.twitter.com/1/statuses/user_timeline.json', :query => parameters )
	return responseTweets

end

.topTweets(screen_name, maxNumber) ⇒ Object

This method gets top ‘n’ tweets from Twitter as requested by the user. Twitter API only returns 20 most recent statuses posted by the user. Thus, this method invokes the request multiple times until the requested number is reached.



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# File 'lib/tweet-words.rb', line 40

def self.topTweets(screen_name, maxNumber)

	count = 0
	id = 0
	response = Array.new(1000)

	begin

		responseFromTwitter = getTweets(screen_name, id)

		#responseFromTwitter.parsed_response.each_with_index do |elem, index|
		responseFromTwitter.parsed_response.each do |elem|

			response[count] = elem['text']
			count = count + 1

			id = Integer(elem['id']) - 1   # storing max_id to be used in subsequent calls

			if count >=maxNumber
				break
			end
		end
	end while count < maxNumber

	return response
end

.topWords(userName, maximumNumberOfTweets) ⇒ Object

and calls the methods to get the tweets and extract words from them. It then sorts the words in decreasing order of frequencies and prints the word list.



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# File 'lib/tweet-words.rb', line 21

def self.topWords(userName, maximumNumberOfTweets)
   
	tweets = topTweets(userName, maximumNumberOfTweets)
	wordSet = findTopWords(tweets)

	puts "Top words in descending order of frequency: "

	wordSet.sort_by { |word, count| count }.reverse.each do |wrd|
	puts "#{wrd[0]}"

	end
	return ' '
end