split nihil into separate modules

1 files changed, 31 insertions, 0 deletions

diff --git a/nihil.posix/open.cc b/nihil.posix/open.cc
new file mode 100644
index 0000000..9ef6538
--- /dev/null
+++ b/nihil.posix/open.cc
@@ -0,0 +1,31 @@
+/*
+ * This source code is released into the public domain.
+ */
+
+module;
+
+#include <expected>
+#include <filesystem>
+#include <system_error>
+
+#include <fcntl.h>
+#include <unistd.h>
+
+module nihil.posix;
+
+import nihil.error;
+import :fd;
+
+namespace nihil {
+
+auto open(std::filesystem::path const &filename, int flags, int mode)
+	-> std::expected<fd, error>
+{
+	auto fdno = ::open(filename.c_str(), flags, mode);
+	if (fdno != -1)
+		return fd(fdno);
+
+	return std::unexpected(error(std::errc(errno)));
+}
+
+} // namespace nihil