How to parse this file
in [Ruby]
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From: Simone D'Amico on 26 Dec 2009 09:07 Hello guys, I have to parse a file of questions/answers for a quizbot in ruby. The file is structured in this way: "Question" "Answer"\r\n "Question2" "Answer2"\r\n "Questionn" "Answern"\r\n How to parse it efficacely? Thank you in advance. Simone D'Amico *nix powered sim(a)me.com
From: Rajinder Yadav on 26 Dec 2009 12:03 Simone D'Amico wrote: > Hello guys, > I have to parse a file of questions/answers for a quizbot in ruby. > The file is structured in this way: > "Question" "Answer"\r\n > "Question2" "Answer2"\r\n > "Questionn" "Answern"\r\n > > How to parse it efficacely? > Thank you in advance. > > Simone D'Amico > *nix powered > sim(a)me.com > here is the basic code, output followed by a basic explanation IO.foreach("testfile.txt") do |line| data=line.match /\"(\w+)\"\s+\"(\w+)\"/ puts data[1] # question puts data[2] # answer end [output] Question Answer Question2 Answer2 Questionn Answern basic explanation: match returns a MatchData object, which can be accessed like an array. you will want to access the 2nd and 3rd position of the MatchData object, the first (zero position) holds an array of the entire parsed data set. irb(main):337:0> str='"Question" "Answer"' irb(main):338:0> data=str.match /\"(\w+)\"\s+\"(\w+)\"/ irb(main):339:0> data[0] => "\"Question\" \"Answer\"" irb(main):340:0> data[1] => "Question" irb(main):341:0> data[2] => "Answer" -- Kind Regards, Rajinder Yadav http://DevMentor.org Do Good! - Share Freely
From: Hassan Schroeder on 26 Dec 2009 12:20 On Sat, Dec 26, 2009 at 9:03 AM, Rajinder Yadav <devguy.ca(a)gmail.com> wrote: > here is the basic code, output followed by a basic explanation > data=line.match /\"(\w+)\"\s+\"(\w+)\"/ ?? That won't remotely work, unless the "Question" and "Answer" are both single words, which seems unlikely :-) Try something like line.chomp.match /\"([^"]+)\"\s+\"([^"]+)\"/ >> '"What is the temperature?" "Pretty cold"'.match /\"(\w+)\"\s+\"(\w+)\"/ => nil >> '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What is the temperature?" 2:"Pretty cold"> >> result = '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What is the temperature?" 2:"Pretty cold"> >> result[1] => "What is the temperature?" >> result[2] => "Pretty cold" >> -- Hassan Schroeder ------------------------ hassan.schroeder(a)gmail.com twitter: @hassan
From: Rajinder Yadav on 26 Dec 2009 12:42 Hassan Schroeder wrote: > On Sat, Dec 26, 2009 at 9:03 AM, Rajinder Yadav <devguy.ca(a)gmail.com> wrote: > >> here is the basic code, output followed by a basic explanation > >> data=line.match /\"(\w+)\"\s+\"(\w+)\"/ > > ?? That won't remotely work, unless the "Question" and "Answer" > are both single words, which seems unlikely :-) > > Try something like line.chomp.match /\"([^"]+)\"\s+\"([^"]+)\"/ > >>> '"What is the temperature?" "Pretty cold"'.match /\"(\w+)\"\s+\"(\w+)\"/ > => nil >>> '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ > => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What > is the temperature?" 2:"Pretty cold"> >>> result = '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ > => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What > is the temperature?" 2:"Pretty cold"> >>> result[1] > => "What is the temperature?" >>> result[2] > => "Pretty cold" > I shouldn't reply when I am half awake =) -- Kind Regards, Rajinder Yadav http://DevMentor.org Do Good! - Share Freely
From: Simone D'Amico on 30 Dec 2009 14:46 Thank you very much. Il giorno 26/dic/2009, alle ore 18.20, Hassan Schroeder ha scritto: > On Sat, Dec 26, 2009 at 9:03 AM, Rajinder Yadav <devguy.ca(a)gmail.com> wrote: > >> here is the basic code, output followed by a basic explanation > >> data=line.match /\"(\w+)\"\s+\"(\w+)\"/ > > ?? That won't remotely work, unless the "Question" and "Answer" > are both single words, which seems unlikely :-) > > Try something like line.chomp.match /\"([^"]+)\"\s+\"([^"]+)\"/ > >>> '"What is the temperature?" "Pretty cold"'.match /\"(\w+)\"\s+\"(\w+)\"/ > => nil >>> '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ > => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What > is the temperature?" 2:"Pretty cold"> >>> result = '"What is the temperature?" "Pretty cold"'.match /\"([^"]+)\"\s+\"([^"]+)\"/ > => #<MatchData "\"What is the temperature?\" \"Pretty cold\"" 1:"What > is the temperature?" 2:"Pretty cold"> >>> result[1] > => "What is the temperature?" >>> result[2] > => "Pretty cold" >>> > > -- > Hassan Schroeder ------------------------ hassan.schroeder(a)gmail.com > twitter: @hassan > Simone D'Amico *nix powered sim(a)me.com
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