Update: Merge branch 'jgrpp_master_cmake' into jgrpp_cmake

cmake/scripts/FindVersion.cmake

@@ -0,0 +1,140 @@
+cmake_minimum_required(VERSION 3.5)
+
+#
+# Finds the current version of the current folder.
+#
+
+find_package(Git QUIET)
+# ${CMAKE_SOURCE_DIR}/.git may be a directory or a regular file
+if (GIT_FOUND AND EXISTS "${CMAKE_SOURCE_DIR}/.git")
+    # Make sure LC_ALL is set to something desirable
+    set(SAVED_LC_ALL "$ENV{LC_ALL}")
+    set(ENV{LC_ALL} C)
+
+    # Assume the dir is not modified
+    set(REV_MODIFIED 0)
+
+    # Refresh the index to make sure file stat info is in sync, then look for modifications
+    execute_process(COMMAND ${GIT_EXECUTABLE} update-index --refresh
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+                    OUTPUT_QUIET
+    )
+
+    # See if git tree is modified
+    execute_process(COMMAND ${GIT_EXECUTABLE} diff-index HEAD
+                    OUTPUT_VARIABLE IS_MODIFIED
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    )
+    if (NOT IS_MODIFIED STREQUAL "")
+        set(REV_MODIFIED 2)
+    endif()
+
+    # Get last commit hash
+    execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse --verify HEAD
+                    OUTPUT_VARIABLE FULLHASH
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+                    ERROR_QUIET
+    )
+    set(REV_HASH "${FULLHASH}")
+
+    string(SUBSTRING "${FULLHASH}" 0 10 SHORTHASH)
+
+    # Get the last commit date
+    execute_process(COMMAND ${GIT_EXECUTABLE} show -s --pretty=format:%ci HEAD
+                    OUTPUT_VARIABLE COMMITDATE
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+    )
+    string(REGEX REPLACE "([0-9]+)-([0-9]+)-([0-9]+).*" "\\1\\2\\3" COMMITDATE "${COMMITDATE}")
+    set(REV_ISODATE "${COMMITDATE}")
+    string(SUBSTRING "${REV_ISODATE}" 0 4 REV_YEAR)
+
+    # Get the branch
+    execute_process(COMMAND ${GIT_EXECUTABLE} symbolic-ref -q HEAD
+                    OUTPUT_VARIABLE BRANCH
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+                    ERROR_QUIET
+    )
+    string(REGEX REPLACE ".*/" "" BRANCH "${BRANCH}")
+
+    # Get the tag
+    execute_process(COMMAND ${GIT_EXECUTABLE} describe --tags
+                    OUTPUT_VARIABLE TAG
+                    OUTPUT_STRIP_TRAILING_WHITESPACE
+                    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+                    ERROR_QUIET
+    )
+    string(REGEX REPLACE "\^0$" "" TAG "${TAG}")
+
+    if (REV_MODIFIED EQUAL 0)
+        set(HASHPREFIX "-g")
+    elseif (REV_MODIFIED EQUAL 2)
+        set(HASHPREFIX "-m")
+    else ()
+        set(HASHPREFIX "-u")
+    endif()
+
+    # Set the version string
+    if (NOT TAG STREQUAL "")
+        set(REV_VERSION "${TAG}")
+        set(REV_ISTAG 1)
+
+        string(REGEX REPLACE "^[0-9.]*$" "" STABLETAG "${TAG}")
+        if (NOT STABLETAG STREQUAL "")
+            set(REV_ISSTABLETAG 1)
+        else ()
+            set(REV_ISSTABLETAG 0)
+        endif ()
+    else ()
+        set(REV_VERSION "${REV_ISODATE}-${BRANCH}${HASHPREFIX}${SHORTHASH}")
+        set(REV_ISTAG 0)
+        set(REV_ISSTABLETAG 0)
+    endif ()
+
+    # Restore LC_ALL
+    set(ENV{LC_ALL} "${SAVED_LC_ALL}")
+elseif (EXISTS "${CMAKE_SOURCE_DIR}/.ottdrev")
+    file(READ "${CMAKE_SOURCE_DIR}/.ottdrev" OTTDREV)
+    string(REPLACE "\n" "" OTTDREV "${OTTDREV}")
+    string(REPLACE "\t" ";" OTTDREV "${OTTDREV}")
+    list(GET OTTDREV 0 REV_VERSION)
+    list(GET OTTDREV 1 REV_ISODATE)
+    list(GET OTTDREV 2 REV_MODIFIED)
+    list(GET OTTDREV 3 REV_HASH)
+    list(GET OTTDREV 4 REV_ISTAG)
+    list(GET OTTDREV 5 REV_ISSTABLETAG)
+    list(GET OTTDREV 6 REV_YEAR)
+else ()
+    message(WARNING "No version detected; this build will NOT be network compatible")
+    set(REV_VERSION "norev0000")
+    set(REV_ISODATE "19700101")
+    set(REV_MODIFIED 1)
+    set(REV_HASH "unknown")
+    set(REV_ISTAG 0)
+    set(REV_ISSTABLETAG 0)
+    set(REV_YEAR "1970")
+endif ()
+
+message(STATUS "Version string: ${REV_VERSION}")
+
+if (GENERATE_OTTDREV)
+    message(STATUS "Generating .ottdrev")
+    file(WRITE ${CMAKE_SOURCE_DIR}/.ottdrev "${REV_VERSION}\t${REV_ISODATE}\t${REV_MODIFIED}\t${REV_HASH}\t${REV_ISTAG}\t${REV_ISSTABLETAG}\t${REV_YEAR}\n")
+else (GENERATE_OTTDREV)
+    message(STATUS "Generating rev.cpp")
+    configure_file("${CMAKE_SOURCE_DIR}/src/rev.cpp.in"
+            "${FIND_VERSION_BINARY_DIR}/rev.cpp")
+
+    if (WIN32)
+        message(STATUS "Generating ottdres.rc")
+        configure_file("${CMAKE_SOURCE_DIR}/src/os/windows/ottdres.rc.in"
+                "${FIND_VERSION_BINARY_DIR}/ottdres.rc")
+    endif (WIN32)
+
+    message(STATUS "Generating CPackProperties.cmake")
+    configure_file("${CMAKE_SOURCE_DIR}/CPackProperties.cmake.in"
+            "${CPACK_BINARY_DIR}/CPackProperties.cmake" @ONLY)
+endif (GENERATE_OTTDREV)