core: add basic libmagic abstraction skeleton

6 files changed, 219 insertions, 1 deletions

diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..d11db7d
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,121 @@
+---
+AccessModifierOffset: "-2"
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments:
+  Enabled: false
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+IncludeBlocks: Regroup
+IncludeCategories:
+    # Library Headers
+  - Regex: 'cabinet/[[:alnum:]._\/]+\.hpp'
+    Priority: 200
+    # Catch2 Headers
+  - Regex: 'catch2/[[:alnum:]._\/]+\.hpp'
+    Priority: 600
+    # Standard Headers
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+    Priority: 900
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+    Priority: 800
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diff --git a/.clangd b/.clangd
new file mode 100644
index 0000000..7a48077
--- /dev/null
+++ b/.clangd
@@ -0,0 +1,11 @@
+Diagnostics:
+  UnusedIncludes: Strict
+  MissingIncludes: Strict
+CompileFlags:
+  Remove:
+    - -fcondition-coverage
+    - -fmodules-ts
+    - -fmodule-mapper=*
+    - -fdeps-format=*
+Documentation:
+  CommentFormat: Doxygen
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9647816..f2970ac 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,9 +10,36 @@ set(CMAKE_CXX_STANDARD_REQUIRED YES)
 set(CMAKE_CXX_EXTENSIONS NO)
 set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)
 
+find_package("PkgConfig")
+
+pkg_check_modules("magic" REQUIRED
+  IMPORTED_TARGET
+  GLOBAL
+  "libmagic"
+)
+
+add_library("core" STATIC)
+add_library("cabinet::core" ALIAS "core")
+
+target_sources("core" PRIVATE
+  "cabinet/magic.cpp"
+)
+
+target_include_directories("core" PUBLIC
+  "${CMAKE_CURRENT_SOURCE_DIR}"
+)
+
+target_link_libraries("core" PUBLIC
+  "PkgConfig::magic"
+)
+
 add_executable("cabinet")
 add_executable("cabinet::app" ALIAS "cabinet")
 
 target_sources("cabinet" PRIVATE
   "cabinet/main.cpp"
 )
+
+target_link_libraries("cabinet" PRIVATE
+  "cabinet::core"
+)
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};
 }