cmake: Drop dependency on sed for translate target

share/qt/translate.cmake

@@ -8,7 +8,6 @@ set(input_variables
   LCONVERT_EXECUTABLE
   LUPDATE_EXECUTABLE
   PYTHON_EXECUTABLE
-  SED_EXECUTABLE
   XGETTEXT_EXECUTABLE
 )
 
@@ -73,13 +72,11 @@ execute_process(
   COMMAND_ERROR_IS_FATAL ANY
 )
 
-execute_process(
-  COMMAND ${SED_EXECUTABLE}
-    -i.old
-    -e "s|source-language=\"en\" target-language=\"en\"|source-language=\"en\"|"
-    -e "/<target xml:space=\"preserve\"><\\/target>/d"
-    ${PROJECT_SOURCE_DIR}/src/qt/locale/bitcoin_en.xlf
-  COMMAND_ERROR_IS_FATAL ANY
+file(READ "${PROJECT_SOURCE_DIR}/src/qt/locale/bitcoin_en.xlf" bitcoin_en)
+string(REPLACE "source-language=\"en\" target-language=\"en\""
+  "source-language=\"en\"" bitcoin_en "${bitcoin_en}"
 )
-
-file(REMOVE "${PROJECT_SOURCE_DIR}/src/qt/locale/bitcoin_en.xlf.old")
+string(REGEX REPLACE " *<target xml:space=\"preserve\"></target>\n"
+  "" bitcoin_en "${bitcoin_en}"
+)
+file(WRITE "${PROJECT_SOURCE_DIR}/src/qt/locale/bitcoin_en.xlf" "${bitcoin_en}")

src/qt/CMakeLists.txt

@@ -290,15 +290,10 @@ if(BUILD_GUI_TESTS)
 endif()
 
 find_program(XGETTEXT_EXECUTABLE xgettext)
-find_program(SED_EXECUTABLE sed)
 if(NOT XGETTEXT_EXECUTABLE)
   add_custom_target(translate
     COMMAND ${CMAKE_COMMAND} -E echo "Error: GNU gettext-tools not found"
   )
-elseif(NOT SED_EXECUTABLE)
-  add_custom_target(translate
-    COMMAND ${CMAKE_COMMAND} -E echo "Error: GNU sed not found"
-  )
 else()
   add_custom_target(translate COMMAND ${CMAKE_COMMAND}
     -D "PROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}"
@@ -306,7 +301,6 @@ else()
     -D "LCONVERT_EXECUTABLE=$<TARGET_FILE:Qt6::lconvert>"
     -D "LUPDATE_EXECUTABLE=$<TARGET_FILE:Qt6::lupdate>"
     -D "PYTHON_EXECUTABLE=$<TARGET_FILE:Python3::Interpreter>"
-    -D "SED_EXECUTABLE=${SED_EXECUTABLE}"
     -D "XGETTEXT_EXECUTABLE=${XGETTEXT_EXECUTABLE}"
     -P ${PROJECT_SOURCE_DIR}/share/qt/translate.cmake
   )