From 6e0a2c1221ee9207179ca98f2073e44ee8301f0d Mon Sep 17 00:00:00 2001
From: Bryan Housel <bryan@mapbox.com>
Date: Wed, 15 Nov 2017 11:56:32 -0500
Subject: [PATCH] Don't use real filenames in the imagery_used field (for
 privacy) (closes #4530)

---
 modules/renderer/background.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/renderer/background.js b/modules/renderer/background.js
index a6d72909b..d1d59042e 100644
--- a/modules/renderer/background.js
+++ b/modules/renderer/background.js
@@ -91,7 +91,10 @@ export function rendererBackground(context) {
 
         var gpx = context.layers().layer('gpx');
         if (gpx && gpx.enabled() && gpx.hasGpx()) {
-            imageryUsed.push(gpx.getSrc());
+            // Include a string like '.gpx data file' or '.geojson data file'
+            var match = gpx.getSrc().match(/(kml|gpx|(?:geo)?json)$/i);
+            var extension = match ? ('.' + match[0].toLowerCase() + ' ') : '';
+            imageryUsed.push(extension + 'data file');
         }
 
         var mapillary_images = context.layers().layer('mapillary-images');