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package com.rockymadden.stringmetric.cli.tokenization
import com.rockymadden.stringmetric.cli._
import com.rockymadden.stringmetric.tokenization.NGramTokenizer
/**
* The ngramtokenizer [[com.rockymadden.stringmetric.cli.Command]]. Returns the N-Gram representation of the passed
* string.
*/
object ngramtokenizer extends Command {
override def main(args: Array[String]): Unit = {
val opts: OptionMap = args
try
if (opts.contains('h) || opts.contains('help)) {
help()
exit(opts)
} else if (opts.contains('dashless) && (opts('dashless): Array[String]).length == 1
&& opts.contains('n) && (opts('n): Int) >= 1) {
execute(opts)
exit(opts)
} else throw new IllegalArgumentException("Expected valid syntax. See --help.")
catch { case e: Throwable => error(e, opts) }
}
override def help(): Unit = {
val ls = sys.props("line.separator")
val tab = " "
println(
"Returns the N-Gram representation of the passed string." + ls + ls +
"Syntax:" + ls +
tab + "ngramtokenizer [Options] string..." + ls + ls +
"Options:" + ls +
tab + "-h, --help" + ls +
tab + tab + "Outputs description, syntax, and opts." +
tab + "--n" + ls +
tab + tab + "The n."
)
}
override def execute(opts: OptionMap): Unit =
NGramTokenizer.tokenize(opts('dashless))(opts('n)) match {
// Implicits are a pain here.
case Some(c) => {
val sb = new StringBuilder
Range(0, c.length).foreach { i =>
sb.append(c(i))
if (i < c.length - 1) sb.append("|")
}
println(sb.result())
}
case None => println("not computable")
}
}
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