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print common follower screen names of specified twitter accounts
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| #!/usr/bin/env ruby | |
| require "net/https" | |
| require "uri" | |
| API_BASE_URL = "https://api.twitter.com/1" | |
| def get(url) | |
| uri = URI.parse(url) | |
| https = Net::HTTP.new(uri.host, uri.port) | |
| https.use_ssl = uri.scheme == "https" | |
| https.start { |conn| conn.get(url).body } | |
| end | |
| def follower_ids(screen_name) | |
| # fetches up to 5000 followers' ids | |
| response = get(API_BASE_URL + "/followers/ids.json?screen_name=" + screen_name) | |
| /\[(.*)\]/.match(response)[1].split(",") | |
| end | |
| def intersect_followers(screen_names, common_followers) | |
| screen_name = screen_names.shift | |
| if screen_name.nil? | |
| common_followers | |
| else | |
| intersect_followers( | |
| screen_names, | |
| common_followers & follower_ids(screen_name) | |
| ) | |
| end | |
| end | |
| # main | |
| screen_names = ARGV | |
| common_followers = intersect_followers( | |
| screen_names, | |
| follower_ids(screen_names.shift) | |
| ) | |
| # assuming the specified two have only up to 100 common followers | |
| users = get(API_BASE_URL + "/users/lookup.json?user_id=" + common_followers.join(",")) | |
| users.scan(/(?:"screen_name":")([a-zA-Z0-9_]*)(?:")/).each do |screen_name| | |
| puts "@#{screen_name.first}" | |
| end |
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