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cs-252/lab18/eliza.rb
2026-04-28 06:24:23 -07:00

67 lines
1.9 KiB
Ruby

#! /usr/bin/ruby -w
#Represents a Rogerian psychiatrist
class Shrink
#initializes 'memory' of Eliza.
def initialize()
@he="he"
@she="she"
end
#read a statement and convert it to a psychiatric response.
def generateResponse(blather)
#downcase for ease of substitution
blather = blather.downcase
#change 'you', 'your', etc. to uppercase 'I', 'MY'
blather.gsub!(/\byour\b/,"MY")
blather.gsub!(/\byou\b/,'I')
#Replace 'my' with 'your', 'me' with 'you', 'I' with 'you', etc.
blather.gsub!(/\bmy\b/,"your")
blather.gsub!(/\bme\b/,"you")
blather.gsub!(/\bi\b/,'you')
#Sub in past references, but only for the 1st occurrence or it looks weird
blather.sub!(/\b(he|him)\b/, @he)
blather.sub!(/\b(she|her)\b/, @she)
#Get future references -- note that these do NOT change the immediate output
hePat=/.*\b(your (father|brother|(ex-?)?(husband|boyfriend)))\b.*/
shePat = /.*\b(your (mother|sister|(ex-?)?(wife|girlfriend)))\b.*/
@he=blather.sub(hePat, '\1').chomp if blather =~ hePat
@she=blather.sub(shePat, '\1').chomp if blather =~ shePat
#Deal with name
namePat=/.*\byour name is (\w+).*/
@name=blather.sub(namePat,'\1')
blather.sub!(namePat,'nice to meet you, \1. How can I help you')
#results are uppercased, for aesthetics.
return blather.upcase + "?"
end
end
#main -- reads from standard input unless -test is the first parameter.
eliza = Shrink.new()
if ARGV[0] == "-test"
['My girlfriend never listens to me',
"I think she might be deaf",
"yes",
"I am afraid of clowns",
"Well, they just seem creepy",
"Also, when I was a kid, a clown killed my dad",
"Are you a clown in disguise?",
].each do |stmt|
puts stmt
puts eliza.generateResponse(stmt)
end
else
while line = gets
response = eliza.generateResponse line
puts response
end
end