Github user xuanyuanking commented on a diff in the pull request:
https://github.com/apache/spark/pull/21370#discussion_r190154231
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -358,6 +357,43 @@ class Dataset[T] private[sql](
sb.toString()
}
+ /**
+ * Transform current row string and append to builder
+ *
+ * @param row Current row of string
+ * @param truncate If set to more than 0, truncates strings to
`truncate` characters and
+ * all cells will be aligned right.
+ * @param colWidths The width of each column
+ * @param html If set to true, return output as html table.
+ * @param head Set to true while current row is table head.
+ * @param sb StringBuilder for current row.
+ */
+ private[sql] def appendRowString(
+ row: Seq[String],
+ truncate: Int,
+ colWidths: Array[Int],
+ html: Boolean,
+ head: Boolean,
+ sb: StringBuilder): Unit = {
+ val data = row.zipWithIndex.map { case (cell, i) =>
+ if (truncate > 0) {
+ StringUtils.leftPad(cell, colWidths(i))
+ } else {
+ StringUtils.rightPad(cell, colWidths(i))
+ }
+ }
+ (html, head) match {
+ case (true, true) =>
+ data.map(StringEscapeUtils.escapeHtml).addString(
+ sb, "<tr><th>", "</th><th>", "</th></tr>")
--- End diff --
Thanks, done. feb5f4a.
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