Index talk:US Copyright Office - Renewal Registrations - 1950.djvu/Reformat

// This is the code I'm using to reformat these pages.

import java.io._

object Process {

 val o = new PrintWriter (new File ("bob"))
 def outputFormattedData (data : Seq[Seq[(String, Int)]]) : Unit = {
   //println (data)
   val chunk = (data.head +: data.tail.takeWhile (_.head._1.isEmpty)).toVector
   println (chunk)
   for (ch <- chunk) {
     for (c <- ch) {
       if (c._1.isEmpty) {o.println(""); o.print (":")}
       else o.print (c._1 + " ")
     }
   }
   o.println ("")
   o.println ("")
   println (data.tail)
   if (!data.tail.isEmpty)
     outputFormattedData (data.tail.dropWhile (_.head._1.isEmpty))
   else
     o.close()
 }

 def allTails[T] (s : Seq[T], bp : T => Boolean) : Seq[Seq[T]] = {
   if (s.isEmpty) Seq()
   else if (bp(s.head)) s +: allTails(s.tail, bp)
   else allTails(s.tail, bp)
 }

 def main(args: Array[String]): Unit = {
   val file = { if (args.isEmpty) "sample" else args(0)}
   val lines = io.Source.fromFile(file).getLines.toVector
   val processedData = allTails (
     lines.map (l => (l.dropWhile(_ == ' '), l.takeWhile(_ == ' ').length)),
     {x : (String, Int) => (x._2 == 0)}
   ).map {x =>
       (x.head +: x.tail.takeWhile (_._2 != 0))
     }.filter (l => l.length != 1 || (l.head._1 != ""))
   outputFormattedData (processedData.toVector)
 }

}

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