Skip JSON files which do not appear to be lcov performance data - e.g., LLVM profiles.

(#420)

Signed-off-by: Henry Cox <[email protected]>

Author: henry2cox

scripts/spreadsheet.py

@@ -175,10 +175,16 @@ def insertStats(keys, sawData, sumRow, avgRow, devRow, beginRow, endRow, col):
                 continue
 
             try:
-                tool = data['config']['tool']
+                cfg = data['config']
+
+                try:
+                    tool = data['config']['tool']
+                except:
+                    tool = 'unknown'
+                    print("%s: unknown tool" %(name))
             except:
-                tool = 'unknown'
-                print("%s: unknown tool" %(name))
+                print("%s: no 'config' data key - I think this is not lcov performance data - skipping" % (name))
+                continue
 
             p, f = os.path.split(name)
             if os.path.splitext(f)[0] == tool: