1 files changed, 15 insertions, 37 deletions
diff --git a/cli/source/main/scala/com/rockymadden/stringmetric/cli/similarity/hammingmetric.scala b/cli/source/main/scala/com/rockymadden/stringmetric/cli/similarity/hammingmetric.scala
index c03293f..e3db059 100755
--- a/cli/source/main/scala/com/rockymadden/stringmetric/cli/similarity/hammingmetric.scala
+++ b/cli/source/main/scala/com/rockymadden/stringmetric/cli/similarity/hammingmetric.scala
@@ -3,42 +3,20 @@ package com.rockymadden.stringmetric.cli.similarity
 import com.rockymadden.stringmetric.cli._
 import com.rockymadden.stringmetric.similarity.HammingMetric
 
-/**
- * The hammingmetric [[com.rockymadden.stringmetric.cli.Command]]. Compares the number of characters that two equal
- * length strings are different from one another.
- */
-object hammingmetric extends Command {
-	override def main(args: Array[String]): Unit = {
-		val options: OptionMap = args
+case object hammingmetric extends Command(
+	(opts) =>
+		"Compares the number of characters that two equal length strings are different from one another." + Ls + Ls +
+		"Syntax:" + Ls +
+		Tab + "hammingmetric [Options] string1 string2..." + Ls + Ls +
+		"Options:" + Ls +
+		Tab + "-h, --help" + Ls +
+		Tab + Tab + "Outputs description, syntax, and options.",
+	(opts) => opts.contains('dashless) && (opts('dashless): Array[String]).length == 2,
+	(opts) => {
+		val strings: Array[String] = opts('dashless)
 
-		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) }
+		HammingMetric.compare(strings(0), strings(1))
+			.map(_.toString)
+			.getOrElse("not comparable")
 	}
-
-	override def help(): Unit = {
-		val ls = sys.props("line.separator")
-		val tab = "  "
-
-		println(
-			"Compares the number of characters that two equal length strings are different from one another." + ls + ls +
-			"Syntax:" + ls +
-			tab + "hammingmetric [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(HammingMetric.compare(strings(0), strings(1)).getOrElse("not comparable"))
-	}
-}
+)