Force to use UTF-8 encoding (issue#10)

Author: evilpan

extract_jni.py

@@ -312,7 +312,7 @@ def parse_apk(apkfile, workers, fn_match=None, outfile=None):
     if not outfile:
         console.print_json(data=output)
     else:
-        with open(outfile, 'w') as f:
+        with open(outfile, "w", encoding="utf-8") as f:
             json.dump(output, f, indent=2, ensure_ascii=False)
 
 
@@ -323,4 +323,4 @@ def parse_apk(apkfile, workers, fn_match=None, outfile=None):
     parser.add_argument('-j', dest='workers', type=int, default=multiprocessing.cpu_count(), help='parse apk with multiple workers(processes)')
     parser.add_argument('-o', dest='outfile', help='save JNI methods as formatted json file')
     args = parser.parse_args()
-    parse_apk(args.apk, args.workers, outfile=args.outfile)
+    parse_apk(args.apk, args.workers, outfile=args.outfile)