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include_guard(GLOBAL)
find_package(Gettext)
find_package(Xgettext)
if(NOT GETTEXT_FOUND)
message(NOTICE "Translations will not be built.")
endif()
define_property(TARGET PROPERTY TRANSLATABLE_SOURCES
BRIEF_DOCS "Translatable sources"
FULL_DOCS "List of sources that are used to extract translation templates by xgettext")
add_custom_target(_updatepot)
function(add_translations)
set(options)
set(one_value_args POT_FILE)
set(multi_value_args LANGUAGES XGETTEXT_ARGS MSGMERGE_ARGS)
cmake_parse_arguments(PARSE_ARGV 0 ARG
"${options}" "${one_value_args}" "${multi_value_args}")
set(pot_file "${ARG_POT_FILE}")
get_filename_component(pot_file_path "${pot_file}" ABSOLUTE)
if(XGETTEXT_FOUND)
add_custom_target(updatepot
COMMAND "${XGETTEXT_EXECUTABLE}" ${ARG_XGETTEXT_ARGS}
$<TARGET_PROPERTY:_updatepot,TRANSLATABLE_SOURCES>
-o "${pot_file_path}"
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
COMMENT "Extracting translation templates into ${pot_file}"
COMMAND_EXPAND_LISTS
VERBATIM
)
else()
message(NOTICE "Updating translation templates will not be possible.")
endif()
if(NOT GETTEXT_FOUND)
return()
endif()
if(TARGET updatepot)
add_custom_target(updatepo)
endif()
add_custom_target(updatepo-only)
set(gmo_files)
foreach(lang IN LISTS ARG_LANGUAGES)
set(po_file "${lang}.po")
set(gmo_file "${lang}.gmo")
set(po_file_path "${CMAKE_CURRENT_SOURCE_DIR}/${po_file}")
set(gmo_file_path "${CMAKE_CURRENT_BINARY_DIR}/${gmo_file}")
add_custom_command(OUTPUT ${gmo_file}
COMMAND ${GETTEXT_MSGFMT_EXECUTABLE} "${po_file_path}" -o "${gmo_file}"
MAIN_DEPENDENCY "${po_file}"
COMMENT "Generating binary catalog ${gmo_file} from ${po_file}"
VERBATIM)
install(FILES "${gmo_file_path}"
DESTINATION "${CMAKE_INSTALL_LOCALEDIR}/${lang}/LC_MESSAGES/"
RENAME "${CMAKE_PROJECT_NAME}.mo")
list(APPEND gmo_files "${gmo_file_path}")
macro(add_po_update_target target main_target)
add_custom_target(${target}
COMMAND "${GETTEXT_MSGMERGE_EXECUTABLE}" ${ARG_MSGMERGE_ARGS}
--update "${po_file}" "${pot_file}"
WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
DEPENDS ${ARGN}
COMMENT "Merging ${pot_file} into ${po_file}"
VERBATIM
)
add_dependencies(${main_target} ${target})
endmacro()
if(TARGET updatepot)
add_po_update_target(updatepo-${lang} updatepo updatepot)
endif()
add_po_update_target(updatepo-only-${lang} updatepo-only)
endforeach()
add_custom_target(pofiles ALL DEPENDS ${gmo_files})
endfunction()
function(add_translatable_sources)
# Use paths relative to the project directory for source files. This way
# the template file will contain the same file names independen of how
# the build was configured.
foreach(src IN LISTS ARGV)
get_filename_component(src_abs_path "${src}" ABSOLUTE)
file(RELATIVE_PATH src_path "${PROJECT_SOURCE_DIR}" "${src_abs_path}")
set_property(TARGET _updatepot APPEND PROPERTY TRANSLATABLE_SOURCES "${src_path}")
endforeach()
endfunction()
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