Simple Ruby Text Parser
Mar 20
2009
2009
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | filename = "sample records.txt" file = File.open(filename) data = [] record = {} class MyParse Tokens = [ ### change the regular expressions accordingly ### ### sale date, sale time, sale address, [/^Sale:\s*(\d+\/\d+\/\d+)\s+(\S+\s+\w\w)\s+(.+?)\s*$/, lambda { |m| m.to_a && {"sale date"=>m[1], "sale time"=>m[2], "sale address"=>m[3] } }], ### seller name, seller time, seller address [/^Seller:\s*(\d+\/\d+\/\d+)\s+(\S+\s+\w\w)\s+(.+?)\s*$/, lambda { |m| m.to_a && {"seller date"=>m[1], "seller time"=>m[2], "seller address"=>m[3] } }], ### Trustor: trustor [/^Trustor:\s+(.+?)\s*$/, lambda { |m| m.to_a && {"trustor"=>m[1] } }], ] def self.read(text) parse(text) end protected def self.parse(text) text.each do |line| Tokens.each do |token| if m = token.first.match(line) return token.last.call(m) end end end nil end end begin while line = file.readline if line.match(/^\s*$/) record = {} next end line.sub!("\r", "") if record = MyParse.read(line) data.push(record) end end rescue EOFError => e puts "'#{filename}': #{e}" ensure file.close end puts data.inspect exit(0) |