com.sumologic.shellbase.table.PrintableTable.scala Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of shellbase-core_2.13 Show documentation

Sumo Logic's Scala-based interactive shell framework

The newest version!

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.sumologic.shellbase.table

abstract class PrintableTable[T] {

  protected case class Column(
                               heading: String,
                               maxWidth: Int,
                               value: T => String,
                               rightAligned: Boolean)

  var trimValues = true

  var bare = true

  var emptyCell: String = "---"

  final def addColumn(
                       heading: String,
                       maxWidth: Int,
                       value: T => String,
                       rightAligned: Boolean = false): Unit = {
    require(maxWidth > 0, "Max width must be positive!")
    columns = columns :+ Column(heading, maxWidth, value, rightAligned)
  }

  def renderLines(rows: Seq[T]): Seq[String]

  protected var columns = List[Column]()
}