From 6cd1d68baf219b5d3c742ba5fb3a9ee04e830999 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 5 Oct 2023 20:56:07 +0800
Subject: ...

---
 src/common/io/OpenFileFlag.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 src/common/io/OpenFileFlag.cpp

(limited to 'src/common/io/OpenFileFlag.cpp')

diff --git a/src/common/io/OpenFileFlag.cpp b/src/common/io/OpenFileFlag.cpp
new file mode 100644
index 00000000..6b9957fe
--- /dev/null
+++ b/src/common/io/OpenFileFlag.cpp
@@ -0,0 +1,19 @@
+#include "cru/common/io/OpenFileFlag.h"
+
+namespace cru::io {
+bool CheckOpenFileFlag(OpenFileFlag flags) {
+  auto has = [flags](OpenFileFlag flag) { return flags & flag; };
+
+  if ((has(OpenFileFlags::Append) || has(OpenFileFlags::Truncate) ||
+       has(OpenFileFlags::Create)) &&
+      !has(OpenFileFlags::Write)) {
+    return false;
+  }
+
+  if (has(OpenFileFlags::Truncate) && has(OpenFileFlags::Append)) {
+    return false;
+  }
+
+  return true;
+}
+}  // namespace cru::io
-- 
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