help util: replace jtextutils with asciitable (#415)

* main motivation: jtextutils became vulnerable because the domain
`com.massisframework` is available for sale...
* also: asciitable is better IMO

traversal-tests/src/test/scala/overflowdb/traversal/TraversalTests.scala

@@ -10,6 +10,7 @@ import overflowdb.{Node, toPropertyKeyOps}
 
 import scala.collection.mutable
 import overflowdb.traversal._
+import overflowdb.traversal.help.Table
 
 import scala.jdk.CollectionConverters.IteratorHasAsScala
 
@@ -199,7 +200,7 @@ class TraversalTests extends AnyWordSpec with ExampleGraphSetup {
         thingTraversalHelpVerbose should include(".label") // step from ElementTraversal
         thingTraversalHelpVerbose should include(".out") // step from NodeTraversal
         thingTraversalHelpVerbose should include(
-          "just like name, but in a different package"
+          "name2 (just like name"
         ) // step from helptest.SimpleDomainTraversal
       }
 
@@ -236,3 +237,17 @@ class TraversalTests extends AnyWordSpec with ExampleGraphSetup {
   }
 
 }
+
+object TableStyleTester {
+  def main(args: Array[String]): Unit = {
+    println(
+      Table(
+        Seq("column a", "column b"),
+        Seq(
+          Seq("abc 1", "bde 1"),
+          Seq("abc 2", "bde 2")
+        )
+      ).render()
+    )
+  }
+}

traversal/build.sbt

@@ -1,6 +1,6 @@
 name := "overflowdb-traversal"
 
 libraryDependencies ++= Seq(
-  "net.oneandone.reflections8" % "reflections8" % "0.11.7", // go back to reflections once 0.9.13 is released
-  "com.massisframework" % "j-text-utils" % "0.3.4"
+  "net.oneandone.reflections8" % "reflections8" % "0.11.7",
+  "de.vandermeer" % "asciitable" % "0.3.2",
 )

traversal/src/main/scala/overflowdb/traversal/help/Table.scala

@@ -1,21 +1,29 @@
 package overflowdb.traversal.help
 
-import dnl.utils.text.table.TextTable
-import java.io.{ByteArrayOutputStream, PrintStream}
-import java.nio.charset.StandardCharsets
-import scala.util.Using
+import de.vandermeer.asciitable.AsciiTable
+import de.vandermeer.asciithemes.TA_GridThemes
+import de.vandermeer.skb.interfaces.transformers.textformat.TextAlignment
 
-case class Table(columnNames: Iterable[String], rows: Iterable[Iterable[String]]) {
+import scala.jdk.CollectionConverters.SeqHasAsJava
 
-  lazy val render: String = {
-    Using.Manager { use =>
-      val charset = StandardCharsets.UTF_8
-      val baos = use(new ByteArrayOutputStream)
-      val ps = use(new PrintStream(baos, true, charset.name))
-      val rowsAsArray = rows.map(_.map(_ + " ").toArray.asInstanceOf[Array[Object]]).toArray
-      new TextTable(columnNames.toArray, rowsAsArray).printTable(ps, 0)
-      new String(baos.toByteArray, charset)
-    }.get
+case class Table(columnNames: Seq[String], rows: Seq[Seq[String]]) {
+
+  def render(width: Int = 120): String = {
+    if (columnNames.isEmpty && rows.isEmpty) {
+      ""
+    } else {
+      val table = new AsciiTable()
+      table.addRule()
+      table.addRow(columnNames.asJava)
+      table.addRule()
+      if (rows.nonEmpty) {
+        rows.map(_.asJava).foreach(table.addRow)
+      }
+      table.addRule()
+      table.getContext.setGridTheme(TA_GridThemes.FULL)
+      table.setTextAlignment(TextAlignment.LEFT)
+      table.render(width)
+    }
   }
 
 }

traversal/src/main/scala/overflowdb/traversal/help/TraversalHelp.scala

@@ -54,7 +54,7 @@ class TraversalHelp(searchPackages: DocSearchPackages) {
     )
 
     s"""Available steps for ${elementClass.getSimpleName}:
-         |${table.render}
+         |${table.render()}
          |""".stripMargin
   }
 
@@ -73,7 +73,7 @@ class TraversalHelp(searchPackages: DocSearchPackages) {
     )
 
     s"""Available starter steps:
-       |${table.render}
+       |${table.render()}
        |""".stripMargin
   }