Adding Markdown format for To Table operation

src/core/operations/ToTable.mjs

@@ -20,7 +20,7 @@ class ToTable extends Operation {
 
         this.name = "To Table";
         this.module = "Default";
-        this.description = "Data can be split on different characters and rendered as an HTML or ASCII table with an optional header row.<br><br>Supports the CSV (Comma Separated Values) file format by default. Change the cell delimiter argument to <code>\\t</code> to support TSV (Tab Separated Values) or <code>|</code> for PSV (Pipe Separated Values).<br><br>You can enter as many delimiters as you like. Each character will be treat as a separate possible delimiter.";
+        this.description = "Data can be split on different characters and rendered as an HTML, ASCII or Markdown table with an optional header row.<br><br>Supports the CSV (Comma Separated Values) file format by default. Change the cell delimiter argument to <code>\\t</code> to support TSV (Tab Separated Values) or <code>|</code> for PSV (Pipe Separated Values).<br><br>You can enter as many delimiters as you like. Each character will be treat as a separate possible delimiter.";
         this.infoURL = "https://wikipedia.org/wiki/Comma-separated_values";
         this.inputType = "string";
         this.outputType = "html";
@@ -43,7 +43,7 @@ class ToTable extends Operation {
             {
                 "name": "Format",
                 "type": "option",
-                "value": ["ASCII", "HTML"]
+                "value": ["ASCII", "HTML", "Markdown"]
             }
         ];
     }
@@ -66,6 +66,10 @@ class ToTable extends Operation {
             case "ASCII":
                 return asciiOutput(tableData);
             case "HTML":
+                return htmlOutput(tableData);
+            case "Markdown":
+                    return markdownOutput(tableData);
+    
             default:
                 return htmlOutput(tableData);
         }
@@ -183,6 +187,53 @@ class ToTable extends Operation {
                 return output;
             }
         }
+
+        function markdownOutput(tableData) {
+            const headerDivider = "-";
+            const verticalBorder = "|";
+
+            let output = "";
+            const longestCells = [];
+
+            // Find longestCells value per column to pad cells equally.
+            tableData.forEach(function(row, index) {
+                row.forEach(function(cell, cellIndex) {
+                    if (longestCells[cellIndex] === undefined || cell.length > longestCells[cellIndex]) {
+                        longestCells[cellIndex] = cell.length;
+                    }
+                });
+            });
+
+            // Ignoring the checkbox, as current Mardown renderer in CF doesn't handle table without headers
+            const row = tableData.shift();
+            output += outputRow(row, longestCells);
+            let rowOutput = verticalBorder;
+            row.forEach(function(cell, index) {
+                rowOutput += " " +  headerDivider + " " + verticalBorder;
+            });
+            output += rowOutput += "\n";
+
+            // Add the rest of the table rows.
+            tableData.forEach(function(row, index) {
+                output += outputRow(row, longestCells);
+            });
+
+            return output;
+
+            /**
+             * Outputs a row of correctly padded cells.
+             */
+            function outputRow(row, longestCells) {
+                let rowOutput = verticalBorder;
+                row.forEach(function(cell, index) {
+                    rowOutput += " " + cell + " ".repeat(longestCells[index] - cell.length) + " " + verticalBorder;
+                });
+                rowOutput += "\n";
+                return rowOutput;
+            }
+
+        }
+
     }
 
 }