From bd6c26c26760b455144b861024186011a471054f Mon Sep 17 00:00:00 2001
From: Robin Hillyard <r.hillyard@northeastern.edu>
Date: Mon, 4 Dec 2023 23:03:45 +0000
Subject: [PATCH] Now allows blank lines in edits file

---
 src/main/scala/com/phasmidsoftware/kmldoc/KMLEdit.scala  | 4 +++-
 .../scala/com/phasmidsoftware/kmldoc/KMLEditor.scala     | 9 ++++-----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/src/main/scala/com/phasmidsoftware/kmldoc/KMLEdit.scala b/src/main/scala/com/phasmidsoftware/kmldoc/KMLEdit.scala
index 9655375..091a2e4 100644
--- a/src/main/scala/com/phasmidsoftware/kmldoc/KMLEdit.scala
+++ b/src/main/scala/com/phasmidsoftware/kmldoc/KMLEdit.scala
@@ -14,7 +14,9 @@ import scala.util.parsing.combinator.JavaTokenParsers
  * @param op1      the target of the edit.
  * @param maybeOp2 the result of the edit.
  */
-case class KmlEdit(command: String, operands: Int, op1: Element, maybeOp2: Option[Element])
+case class KmlEdit(command: String, operands: Int, op1: Element, maybeOp2: Option[Element]) {
+  def isValid: Boolean = command.nonEmpty && operands > 0
+}
 
 object KmlEdit {
 
diff --git a/src/main/scala/com/phasmidsoftware/kmldoc/KMLEditor.scala b/src/main/scala/com/phasmidsoftware/kmldoc/KMLEditor.scala
index b9ee31b..72ace68 100644
--- a/src/main/scala/com/phasmidsoftware/kmldoc/KMLEditor.scala
+++ b/src/main/scala/com/phasmidsoftware/kmldoc/KMLEditor.scala
@@ -20,7 +20,7 @@ import scala.util._
  */
 case class KMLEditor(edits: Seq[KmlEdit]) {
 
-  KMLEditor.logger.info(s"KMLEditor: ${edits.mkString}")
+  KMLEditor.logger.info(s"""KMLEditor: ${edits.mkString(", ")}""")
 
   /**
    * Method to process the file defined by baseFilename by parsing it, editing it, and writing it out.
@@ -51,7 +51,6 @@ case class KMLEditor(edits: Seq[KmlEdit]) {
   private def processFromTo(inputFile: Try[String], outputFile: Try[String]): IO[Unit] = {
     val qsi: IO[Seq[Writer]] = for {
       w <- IO.fromTry(outputFile)
-//      _ = println(w)
       f <- IO(new File(w))
       bW = new BufferedWriter(new FileWriter(f, false))
       ks <- KMLCompanion.loadKML(inputFile)
@@ -101,9 +100,9 @@ object KMLEditor {
   def parse(wy: Try[String]): IO[KMLEditor] = for {
     w <- IO.fromTry(wy)
     s = Source.fromFile(w)
-    z <- KmlEdit.parseLines(s.getLines())
-    q = KMLEditor(z)
-  } yield q
+    es <- KmlEdit.parseLines(s.getLines())
+    kE = KMLEditor(es filter (_.isValid))
+  } yield kE
 
   /**
    * Method to edit a KML file.