core: add basic libmagic abstraction skeleton

3 files changed, 60 insertions, 1 deletions

diff --git a/cabinet/magic.cpp b/cabinet/magic.cpp
new file mode 100644
index 0000000..f8d7337
--- /dev/null
+++ b/cabinet/magic.cpp
@@ -0,0 +1,19 @@
+#include <cabinet/magic.hpp>
+
+#include <magic.h>
+
+#include <utility>
+
+namespace cab
+{
+
+  magic::magic(magic::flags flags)
+      : m_cookie{magic_open(std::to_underlying(flags))}
+  {}
+
+  magic::~magic()
+  {
+    magic_close(m_cookie);
+  }
+
+}  // namespace cab
diff --git a/cabinet/magic.hpp b/cabinet/magic.hpp
new file mode 100644
index 0000000..3ad6dfa
--- /dev/null
+++ b/cabinet/magic.hpp
@@ -0,0 +1,36 @@
+#ifndef CABINET_MAGIC_HPP
+#define CABINET_MAGIC_HPP
+
+#include <magic.h>
+
+#include <utility>
+
+namespace cab
+{
+
+  struct magic
+  {
+    enum struct flags : decltype(MAGIC_NONE)
+    {
+      none = MAGIC_NONE,
+      print_debug = MAGIC_DEBUG,
+      follow_symlinks = MAGIC_SYMLINK,
+      inspect_compressed = MAGIC_COMPRESS,
+      inspect_devices = MAGIC_DEVICES,
+    };
+
+    magic(flags flags);
+    ~magic();
+
+  private:
+    magic_t m_cookie{};
+  };
+
+  constexpr auto operator|(magic::flags lhs, magic::flags rhs) noexcept -> magic::flags
+  {
+    return static_cast<magic::flags>(std::to_underlying(lhs) | std::to_underlying(rhs));
+  }
+
+}  // namespace cab
+
+#endif
diff --git a/cabinet/main.cpp b/cabinet/main.cpp
index 09509dd..26dd690 100644
--- a/cabinet/main.cpp
+++ b/cabinet/main.cpp
@@ -1,2 +1,6 @@
-auto main() -> int {
+#include <cabinet/magic.hpp>
+
+auto main() -> int
+{
+  [[maybe_unused]] auto magic = cab::magic{cab::magic::flags::print_debug | cab::magic::flags::follow_symlinks};
 }