feat: add metadata header

.gitignore

@@ -4,4 +4,6 @@
 /cmake-build/
 /cmake-build-debug/
 /cmake-build-release/
+
+/src/core/utils/metadata.h
 /src/klotski_core/utils/metadata.h

src/core/CMakeLists.txt

@@ -3,6 +3,70 @@ project(klotski_core VERSION 0.0.2 LANGUAGES CXX)
 
 set(CMAKE_CXX_STANDARD 23)
 
+macro(git_tag _tag)
+  find_package(Git QUIET)
+  if (GIT_FOUND)
+    execute_process(COMMAND ${GIT_EXECUTABLE} describe --tags
+                    OUTPUT_VARIABLE ${_tag}
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    ERROR_QUIET)
+  endif()
+endmacro()
+
+macro(git_branch _branch)
+  find_package(Git QUIET)
+  if (GIT_FOUND)
+    execute_process(COMMAND ${GIT_EXECUTABLE} symbolic-ref --short -q HEAD
+                    OUTPUT_VARIABLE ${_branch}
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    ERROR_QUIET)
+  endif()
+endmacro()
+
+macro(git_commit_id _hash)
+  find_package(Git QUIET)
+  if (GIT_FOUND)
+    execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --pretty=format:%H
+                    OUTPUT_VARIABLE ${_hash}
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    ERROR_QUIET)
+  endif()
+endmacro()
+
+set(GIT_TAG_LONG "")
+git_tag(GIT_TAG_LONG)
+if(GIT_TAG_LONG STREQUAL "")  # without git tag
+    set(GIT_TAG_LONG "unknown")
+endif()
+
+set(GIT_BRANCH "")
+git_branch(GIT_BRANCH)
+if(GIT_BRANCH STREQUAL "")  # without git branch
+    set(GIT_BRANCH "unknown")
+endif()
+
+set(GIT_COMMIT_LONG "")
+git_commit_id(GIT_COMMIT_LONG)
+if(GIT_COMMIT_LONG STREQUAL "")  # without git commit
+    set(GIT_COMMIT_LONG "unknown")
+endif()
+
+set(PLAT "${CMAKE_SYSTEM_NAME}")  # TODO: add `KLSK_` prefix
+set(ARCH "${CMAKE_SYSTEM_PROCESSOR}")
+
+set(VERSION_MAJOR ${klotski_core_VERSION_MAJOR})
+set(VERSION_MINOR ${klotski_core_VERSION_MINOR})
+set(VERSION_ALTER ${klotski_core_VERSION_PATCH})
+
+string(TIMESTAMP VERSION_BUILD "%Y-%m-%d %H:%M:%S")
+
+set(COMPILER "${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
+
+configure_file(
+    ${PROJECT_SOURCE_DIR}/utils/metadata.h.in
+    ${PROJECT_SOURCE_DIR}/utils/metadata.h
+)
+
 set(KLSK_CORE_SRC
     ranges/internal/spawn.cc
     ranges/internal/ranges.cc

src/core/utils/metadata.h.in

@@ -0,0 +1,16 @@
+#pragma once
+
+#define VERSION_MAJOR uint32_t(@VERSION_MAJOR@)
+#define VERSION_MINOR uint32_t(@VERSION_MINOR@)
+#define VERSION_PATCH uint32_t(@VERSION_ALTER@)
+#define VERSION_STR   "v@VERSION_MAJOR@.@VERSION_MINOR@.@VERSION_ALTER@"
+
+#define AUTHOR          "dnomd343"
+#define SYSTEM          "@PLAT@ @ARCH@"
+#define COMPILER        "@COMPILER@"
+#define BUILD_TIME      "@VERSION_BUILD@"
+
+#define GIT_BRANCH      "@GIT_BRANCH@"
+#define GIT_TAG_ID      "@GIT_TAG_LONG@"
+#define GIT_PROJECT     "https://github.com/dnomd343/klotski.git"
+#define GIT_COMMIT_ID   "@GIT_COMMIT_LONG@"