From 0229e7ed8b6617c941dd5aeb94e2ed1dac2f0772 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=A4rkl?= <info@florianmaerkl.de>
Date: Sun, 24 Jan 2021 14:12:01 +0100
Subject: [PATCH] Don't print Warnings for whitespace-only JSON Failures
 (#2579)

---
 src/core/Cutter.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/Cutter.cpp b/src/core/Cutter.cpp
index dd485909..d9a98585 100644
--- a/src/core/Cutter.cpp
+++ b/src/core/Cutter.cpp
@@ -521,6 +521,10 @@ QJsonDocument CutterCore::parseJson(const char *res, const char *cmd)
     QJsonDocument doc = QJsonDocument::fromJson(json, &jsonError);
 
     if (jsonError.error != QJsonParseError::NoError) {
+        // don't call trimmed() before knowing that parsing failed to avoid copying huge jsons all the time
+        if (json.trimmed().isEmpty()) {
+            return doc;
+        }
         if (cmd) {
             eprintf("Failed to parse JSON for command \"%s\": %s\n", cmd,
                     jsonError.errorString().toLocal8Bit().constData());