OpenTTD-patches/cmake/scripts/GenerateWidget.cmake

128 lines
4.8 KiB
CMake

cmake_minimum_required(VERSION 3.5)
#
# CMake script to automatically generate the enums in script_window.hpp
#
# The file is scanned for @enum tokens, and the placeholder is filled with an enum from a different file.
#
# Example:
# // @enum enumname filename@placeholder@
# ... content here is replaced ...
# // @endenum
#
# The parameter "enumname" specifies the enumeration to extract. This can also be a regular expression.
# The parameter "filename" specifies the relative path to the file, where the enumeration is extracted from. This can also be a glob expression.
#
# All files where enumerations are extracted from are automatically added via #include
#
if(NOT GENERATE_SOURCE_FILE)
message(FATAL_ERROR "Script needs GENERATE_SOURCE_FILE defined")
endif()
if(NOT GENERATE_BINARY_FILE)
message(FATAL_ERROR "Script needs GENERATE_BINARY_FILE defined")
endif()
file(STRINGS ${GENERATE_SOURCE_FILE} ENUM_LINES REGEX "@enum")
foreach(ENUM IN LISTS ENUM_LINES)
string(REGEX REPLACE "^( )// @enum ([^ ]+) ([^ ]+)@([^ ]+)@" "\\4" PLACE_HOLDER "${ENUM}")
set(ADD_INDENT "${CMAKE_MATCH_1}")
set(ENUM_PATTERN "${CMAKE_MATCH_2}")
file(GLOB FILENAMES "${CMAKE_MATCH_3}")
list(SORT FILENAMES)
foreach(FILE IN LISTS FILENAMES)
unset(ACTIVE)
unset(ACTIVE_COMMENT)
unset(COMMENT)
file(STRINGS ${FILE} SOURCE_LINES)
string(REPLACE "${CMAKE_CURRENT_SOURCE_DIR}/" "" FILE ${FILE})
string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}/* automatically generated from ${FILE} */")
list(APPEND INCLUDES "#include \"${FILE}\"")
foreach(LINE IN LISTS SOURCE_LINES)
string(REPLACE "${RM_INDENT}" "" LINE "${LINE}")
# Remember possible doxygen comment before enum declaration
if((NOT ACTIVE) AND "${LINE}" MATCHES "/\\*\\*")
set(COMMENT "${ADD_INDENT}${LINE}")
set(ACTIVE_COMMENT 1)
elseif(ACTIVE_COMMENT EQUAL 1)
string(APPEND COMMENT "\n${ADD_INDENT}${LINE}")
endif()
# Check for enum match
if("${LINE}" MATCHES "^ *enum *${ENUM_PATTERN}( *: *[^ ]*)? *\{")
# REGEX REPLACE does a REGEX MATCHALL and fails if an empty string is matched
string(REGEX MATCH "[^ ]*" RESULT "${LINE}")
string(REPLACE "${RESULT}" "" RM_INDENT "${LINE}")
string(REGEX MATCH " *: *[^ ]*" RESULT "${LINE}")
string(REPLACE "${RESULT}" "" LINE "${LINE}")
set(ACTIVE 1)
if(ACTIVE_COMMENT GREATER 0)
string(APPEND ${PLACE_HOLDER} "\n${COMMENT}")
endif()
unset(ACTIVE_COMMENT)
unset(COMMENT)
endif()
# Forget doxygen comment, if no enum follows
if(ACTIVE_COMMENT EQUAL 2 AND NOT "${LINE}" STREQUAL "")
unset(ACTIVE_COMMENT)
unset(COMMENT)
endif()
if(ACTIVE_COMMENT EQUAL 1 AND "${LINE}" MATCHES "\\*/")
set(ACTIVE_COMMENT 2)
endif()
if(ACTIVE)
if("${LINE}" MATCHES "^ *[A-Za-z0-9_]* *[,=]")
# Transform enum values
# REGEX REPLACE does a REGEX MATCHALL and replaces too much
string(REGEX MATCH " *=[^,]*" RESULT "${LINE}")
string(REPLACE "${RESULT}" "" LINE "${LINE}")
string(REGEX REPLACE " *//" " //" LINE "${LINE}")
string(REGEX MATCH "^( *)([A-Za-z0-9_]+),(.*)" RESULT "${LINE}")
string(LENGTH "${CMAKE_MATCH_2}" LEN)
math(EXPR LEN "43 - ${LEN}")
unset(SPACES)
foreach(i RANGE ${LEN})
string(APPEND SPACES " ")
endforeach()
if(CMAKE_MATCH_3)
string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}${CMAKE_MATCH_1}${CMAKE_MATCH_2}${SPACES} = ::${CMAKE_MATCH_2},${SPACES}${CMAKE_MATCH_3}")
else()
string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}${CMAKE_MATCH_1}${CMAKE_MATCH_2}${SPACES} = ::${CMAKE_MATCH_2},")
endif()
elseif("${LINE}" STREQUAL "")
string(APPEND ${PLACE_HOLDER} "\n")
else()
string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}${LINE}")
endif()
endif()
if("${LINE}" MATCHES "^ *\};")
if(ACTIVE)
string(APPEND ${PLACE_HOLDER} "\n")
endif()
unset(ACTIVE)
endif()
endforeach()
endforeach()
endforeach()
list(REMOVE_DUPLICATES INCLUDES)
string(REPLACE ";" "\n" INCLUDES "${INCLUDES}")
configure_file(${GENERATE_SOURCE_FILE} ${GENERATE_BINARY_FILE})