From fa8c876031e4bc96c21f7f4d2f9161b1e5f64da7 Mon Sep 17 00:00:00 2001
From: Klaus Aehlig <klaus.aehlig@huawei.com>
Date: Mon, 24 Feb 2025 13:37:54 +0100
Subject: Promote IsValidFileName to a public function of the path utils

... instead of being private to parse_archive.
---
 src/utils/cpp/path.hpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/utils/cpp/path.hpp')

diff --git a/src/utils/cpp/path.hpp b/src/utils/cpp/path.hpp
index 26d25e50..ba3d125b 100644
--- a/src/utils/cpp/path.hpp
+++ b/src/utils/cpp/path.hpp
@@ -16,6 +16,7 @@
 #define INCLUDED_SRC_UTILS_CPP_PATH_HPP
 
 #include <filesystem>
+#include <string>
 
 [[nodiscard]] static inline auto ToNormalPath(
     std::filesystem::path const& p) noexcept -> std::filesystem::path {
@@ -58,4 +59,15 @@
     return PathIsNonUpwards(applied_to.parent_path() / path);
 }
 
+/// \brief Predicate if a given string is a valid filename.
+[[nodiscard]] static inline auto IsValidFileName(const std::string& s) -> bool {
+    if (s.find_first_of("/\0") != std::string::npos) {
+        return false;
+    }
+    if (s.empty() or s == "." or s == "..") {
+        return false;
+    }
+    return true;
+}
+
 #endif  // INCLUDED_SRC_UTILS_CPP_PATH_HPP
-- 
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