wanda: restructure source directory

1 files changed, 39 insertions, 0 deletions

diff --git a/source/include/wanda/filesystem.hpp b/source/include/wanda/filesystem.hpp
new file mode 100644
index 0000000..1975bc5
--- /dev/null
+++ b/source/include/wanda/filesystem.hpp
@@ -0,0 +1,39 @@
+/**
+ * @file   filesystem.hpp
+ * @author Felix Morgner (felix.morgner@gmail.com)
+ * @since  1.0.0
+ */
+
+#ifndef WANDA_FILESYSTEM_HPP
+#define WANDA_FILESYSTEM_HPP
+
+#include <filesystem>
+#include <optional>
+#include <vector>
+
+namespace wanda
+{
+  /**
+   * @brief Covenience alias for path lists
+   */
+  using path_list = std::vector<std::filesystem::path>;
+
+  /**
+   * @brief The default scan filter, allowing only regular files to pass
+   */
+  constexpr inline auto default_filter = [](std::filesystem::path const & path) {
+    return is_regular_file(path);
+  };
+
+  /**
+   * @brief Scan the given folder for files
+   */
+  std::optional<path_list> scan(std::filesystem::path folder, bool(filter)(std::filesystem::path const &) = default_filter);
+
+  /**
+   * @brief Pick a random path from the given list
+   */
+  std::filesystem::path random_pick(path_list const & paths);
+}  // namespace wanda
+
+#endif
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