Change: rewrote generate_widget in CMake

1 files changed, 119 insertions, 0 deletions

diff --git a/cmake/scripts/GenerateWidget.cmake b/cmake/scripts/GenerateWidget.cmake
new file mode 100644
index 000000000..0bb349095
--- /dev/null
+++ b/cmake/scripts/GenerateWidget.cmake
@@ -0,0 +1,119 @@
+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.
+#
+#
+
+if (NOT GENERATE_SOURCE_FILE)
+    message(FATAL_ERROR "Script needs GENERATE_SOURCE_FILE defined")
+endif (NOT GENERATE_SOURCE_FILE)
+if (NOT GENERATE_BINARY_FILE)
+    message(FATAL_ERROR "Script needs GENERATE_BINARY_FILE defined")
+endif (NOT GENERATE_BINARY_FILE)
+
+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 ${FILE} */")
+
+        foreach(LINE IN LISTS SOURCE_LINES)
+            string(REPLACE "${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}")
+
+                set(ACTIVE 1)
+                if (ACTIVE_COMMENT GREATER 0)
+                     string(APPEND ${PLACE_HOLDER} "\n${COMMENT}")
+                endif (ACTIVE_COMMENT GREATER 0)
+                unset(ACTIVE_COMMENT)
+                unset(COMMENT)
+            endif ("${LINE}" MATCHES "^	*enum *${ENUM_PATTERN} *\{")
+
+            # Forget doxygen comment, if no enum follows
+            if (ACTIVE_COMMENT EQUAL 2 AND NOT "${LINE}" STREQUAL "")
+                unset(ACTIVE_COMMENT)
+                unset(COMMENT)
+            endif (ACTIVE_COMMENT EQUAL 2 AND NOT "${LINE}" STREQUAL "")
+            if (ACTIVE_COMMENT EQUAL 1 AND "${LINE}" MATCHES "\\*/")
+                set(ACTIVE_COMMENT 2)
+            endif (ACTIVE_COMMENT EQUAL 1 AND "${LINE}" MATCHES "\\*/")
+
+            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(i)
+
+                    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 (CMAKE_MATCH_3)
+                        string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}${CMAKE_MATCH_1}${CMAKE_MATCH_2}${SPACES} = ::${CMAKE_MATCH_2},")
+                    endif (CMAKE_MATCH_3)
+                elseif ("${LINE}" STREQUAL "")
+                    string(APPEND ${PLACE_HOLDER} "\n")
+                else ()
+                    string(APPEND ${PLACE_HOLDER} "\n${ADD_INDENT}${LINE}")
+                endif ()
+            endif (ACTIVE)
+
+            if ("${LINE}" MATCHES "^	*\};")
+                if (ACTIVE)
+                    string(APPEND ${PLACE_HOLDER} "\n")
+                endif (ACTIVE)
+                unset(ACTIVE)
+            endif ("${LINE}" MATCHES "^	*\};")
+         endforeach(LINE)
+    endforeach(FILE)
+ endforeach(ENUM)
+
+configure_file(${GENERATE_SOURCE_FILE} ${GENERATE_BINARY_FILE})