From 3d41ebaee957feeabec137c56f83e038ae5fc8e0 Mon Sep 17 00:00:00 2001
From: Ben Brian <bbrian@enterscape.com>
Date: Mon, 12 Dec 2016 19:07:24 -0500
Subject: [PATCH] Adds new option exporting.csv.dataFormatter, which allows
 overriding the default number format for HTML data table and exported CSV

---
 export-csv.js | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/export-csv.js b/export-csv.js
index 99bfe20..3aa119b 100644
--- a/export-csv.js
+++ b/export-csv.js
@@ -151,23 +151,23 @@
         var csv = '',
             rows = this.getDataRows(),
             options = (this.options.exporting || {}).csv || {},
+            dataFormatter = options.dataFormatter || function (val) {
+                return Highcharts.numberFormat(val, -1, useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.', '');
+            },
             itemDelimiter = options.itemDelimiter || ',', // use ';' for direct import to Excel
             lineDelimiter = options.lineDelimiter || '\n'; // '\n' isn't working with the js csv data extraction
 
         // Transform the rows to CSV
         each(rows, function (row, i) {
             var val = '',
-                j = row.length,
-                n = useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.';
+                j = row.length;
             while (j--) {
                 val = row[j];
                 if (typeof val === "string") {
                     val = '"' + val + '"';
                 }
                 if (typeof val === 'number') {
-                    if (n === ',') {
-                        val = val.toString().replace(".", ",");
-                    }
+                    val = dataFormatter(val);
                 }
                 row[j] = val;
             }
@@ -187,24 +187,24 @@
      */
     Highcharts.Chart.prototype.getTable = function (useLocalDecimalPoint) {
         var html = '<table>',
-            rows = this.getDataRows();
+            rows = this.getDataRows(),
+            options = (this.options.exporting || {}).csv || {},
+            dataFormatter = options.dataFormatter || function (val) {
+                return Highcharts.numberFormat(val, -1, useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.', '');
+            };
 
         // Transform the rows to HTML
         each(rows, function (row, i) {
             var tag = i ? 'td' : 'th',
                 val,
-                j,
-                n = useLocalDecimalPoint ? (1.1).toLocaleString()[1] : '.';
+                j;
 
             html += '<tr>';
             for (j = 0; j < row.length; j = j + 1) {
                 val = row[j];
                 // Add the cell
                 if (typeof val === 'number') {
-                    val = val.toString();
-                    if (n === ',') {
-                        val = val.replace('.', n);
-                    }
+                    val = dataFormatter(val);
                     html += '<' + tag + ' class="number">' + val + '</' + tag + '>';
 
                 } else {