module AiWhereIsTrigger

AiWhereIsTrigger — detect unprefixed “where is …” channel questions for !ai. Public: channel_trigger?, parse_question, extract_subject Depends: (none) Tests: test/lib/ai_where_is_trigger_test.rb

Constants

COMMAND_PREFIX_PATTERN
WHERE_IS_PATTERN

Public Instance Methods

channel_trigger? (text)

Source

# File lib/ai/where_is_trigger.rb, line 14
def channel_trigger?(text)
  sanitized = sanitize_trigger_text(text)
  return false if sanitized.empty?
  return false if command_prefix?(sanitized)

  !parse_question(sanitized).nil?
end

command_prefix? (text)

Source

# File lib/ai/where_is_trigger.rb, line 44
def command_prefix?(text)
  text.to_s.lstrip.match?(COMMAND_PREFIX_PATTERN)
end

extract_subject (text)

Source

# File lib/ai/where_is_trigger.rb, line 32
def extract_subject(text)
  match = sanitize_trigger_text(text).match(WHERE_IS_PATTERN)
  return nil unless match

  subject = match[1].to_s.strip.sub(/\?+\z/, "").strip
  subject.empty? ? nil : subject
end

parse_question (text)

Source

# File lib/ai/where_is_trigger.rb, line 22
def parse_question(text)
  match = sanitize_trigger_text(text).match(WHERE_IS_PATTERN)
  return nil unless match

  remainder = match[1].to_s.strip.sub(/\?+\z/, "").strip
  return nil if remainder.empty?

  "where is #{remainder}"
end

sanitize_trigger_text (text)

Source

# File lib/ai/where_is_trigger.rb, line 40
def sanitize_trigger_text(text)
  text.to_s.gsub(/[\x00-\x1f]/, " ").squeeze(" ").strip
end