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package com.rockymadden.stringmetric.cli.similarity
import com.rockymadden.stringmetric.cli._
import com.rockymadden.stringmetric.similarity.LevenshteinMetric
/**
* The levenshteinmetric [[com.rockymadden.stringmetric.cli.Command]]. Compares the number of characters that two
* strings are different from one another via insertion, deletion, and substitution.
*/
object levenshteinmetric extends Command {
override def main(args: Array[String]): Unit = {
val options: OptionMap = args
try
if (options.contains('h) || options.contains('help)) {
help()
exit(options)
} else if (options.contains('dashless) && (options('dashless): Array[String]).length == 2) {
execute(options)
exit(options)
} else throw new IllegalArgumentException("Expected valid syntax. See --help.")
catch { case e: Throwable => error(e, options) }
}
override def help(): Unit = {
val ls = sys.props("line.separator")
val tab = " "
println(
"Compares the number of characters that two strings are different from one another via insertion, deletion, " +
"and substitution." + ls + ls +
"Syntax:" + ls +
tab + "levenshteinmetric [Options] string1 string2..." + ls + ls +
"Options:" + ls +
tab + "-h, --help" + ls +
tab + tab + "Outputs description, syntax, and options."
)
}
override def execute(options: OptionMap): Unit = {
val strings: Array[String] = options('dashless)
println(LevenshteinMetric.compare(strings(0), strings(1)).getOrElse("not comparable"))
}
}
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