92 lines
2.4 KiB
Ruby
92 lines
2.4 KiB
Ruby
# frozen_string_literal: true
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module Extractor
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extend Twitter::Extractor
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module_function
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# :yields: username, list_slug, start, end
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def extract_mentions_or_lists_with_indices(text)
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return [] unless text =~ Twitter::Regex[:at_signs]
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possible_entries = []
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text.to_s.scan(Account::MENTION_RE) do |screen_name, _|
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match_data = $LAST_MATCH_INFO
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after = $'
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unless after =~ Twitter::Regex[:end_mention_match]
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start_position = match_data.char_begin(1) - 1
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end_position = match_data.char_end(1)
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possible_entries << {
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screen_name: screen_name,
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indices: [start_position, end_position],
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}
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end
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end
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possible_entries.each { |mention| yield mention[:screen_name], mention[:indices].first, mention[:indices].last } if block_given?
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possible_entries
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end
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# :yields: hashtag, start, end
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def extract_hashtags_with_indices(text, **)
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return [] unless text =~ /#/
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tags = []
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text.scan(Tag::HASHTAG_RE) do |hash_text, _|
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match_data = $LAST_MATCH_INFO
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start_position = match_data.char_begin(1) - 1
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end_position = match_data.char_end(1)
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after = $'
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if after =~ %r{\A://}
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hash_text.match(/(.+)(https?\Z)/) do |matched|
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hash_text = matched[1]
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end_position -= matched[2].char_length
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end
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end
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tags << {
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hashtag: hash_text,
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indices: [start_position, end_position],
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}
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end
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tags.each { |tag| yield tag[:hashtag], tag[:indices].first, tag[:indices].last } if block_given?
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tags
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end
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# :yields: cashtag, start, end
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def extract_cashtags_with_indices(text)
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return [] unless text =~ /\$/
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tags = []
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text.scan(Tag::CASHTAG_RE) do |cash_text, _|
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match_data = $LAST_MATCH_INFO
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start_position = match_data.char_begin(1) - 1
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end_position = match_data.char_end(1)
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after = $'
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next if cash_text.size > 5
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if after =~ %r{\A://}
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cash_text.match(/(.+)(https?\Z)/) do |matched|
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cash_text = matched[1]
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end_position -= matched[2].char_length
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end
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end
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tags << {
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cashtag: cash_text,
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indices: [start_position, end_position],
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}
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end
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tags.each { |tag| yield tag[:cashtag], tag[:indices].first, tag[:indices].last } if block_given?
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tags
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end
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end |