From 06a532c227c2f37fc190deb84970fdfeaaf37d6a Mon Sep 17 00:00:00 2001
From: Damien George <damien.p.george@gmail.com>
Date: Fri, 26 Apr 2019 15:21:09 +1000
Subject: [PATCH] lib/utils/pyexec: Add pyexec_file_if_exists() helper
 function.

It will only execute the script if it can be stat'd and is a file.
---
 lib/utils/pyexec.c | 8 ++++++++
 lib/utils/pyexec.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/lib/utils/pyexec.c b/lib/utils/pyexec.c
index f4e6856e50..946a97a00a 100644
--- a/lib/utils/pyexec.c
+++ b/lib/utils/pyexec.c
@@ -541,6 +541,14 @@ int pyexec_file(const char *filename) {
     return parse_compile_execute(filename, MP_PARSE_FILE_INPUT, EXEC_FLAG_SOURCE_IS_FILENAME);
 }
 
+int pyexec_file_if_exists(const char *filename) {
+    mp_import_stat_t stat = mp_import_stat(filename);
+    if (stat != MP_IMPORT_STAT_FILE) {
+        return 1; // success (no file is the same as an empty file executing without fail)
+    }
+    return pyexec_file(filename);
+}
+
 #if MICROPY_MODULE_FROZEN
 int pyexec_frozen_module(const char *name) {
     void *frozen_data;
diff --git a/lib/utils/pyexec.h b/lib/utils/pyexec.h
index a0d0b52b16..9eb490be54 100644
--- a/lib/utils/pyexec.h
+++ b/lib/utils/pyexec.h
@@ -46,6 +46,7 @@ extern int pyexec_system_exit;
 int pyexec_raw_repl(void);
 int pyexec_friendly_repl(void);
 int pyexec_file(const char *filename);
+int pyexec_file_if_exists(const char *filename);
 int pyexec_frozen_module(const char *name);
 void pyexec_event_repl_init(void);
 int pyexec_event_repl_process_char(int c);