flightgear/CMakeModules/Translations.cmake

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2022-10-20 20:29:11 +08:00
set(xlf_file "en_US/FlightGear-Qt.xlf")
if(EXISTS "${TRANSLATIONS_SRC_DIR}/${xlf_file}")
message(STATUS "Using explicitly defined translations from: ${TRANSLATIONS_SRC_DIR}")
set(do_translate TRUE)
elseif(EXISTS "${FG_DATA_DIR}/Translations/${xlf_file}")
set(TRANSLATIONS_SRC_DIR "${FG_DATA_DIR}/Translations")
set(do_translate TRUE)
message(STATUS "Found translations dir implicitly: ${TRANSLATIONS_SRC_DIR}")
else()
message(STATUS "Couldn't find translations data, will not include translated string in the executable")
set(do_translate FALSE)
endif()
find_package(Qt5 5.4 COMPONENTS LinguistTools)
if (${do_translate} AND NOT TARGET Qt5::lrelease)
set(do_translate FALSE)
message(STATUS "Built-in translations disabled becuase Qt5 lrelease tool was not found."
"\n(on Linux You may need to install an additional package containing the Qt5 translation tools)")
endif()
function(translation_dir_list result curdir)
file(GLOB children RELATIVE ${curdir} ${curdir}/*)
set(dirlist "")
foreach(child ${children})
if (${child} STREQUAL "default")
continue()
endif()
if (IS_DIRECTORY ${curdir}/${child})
list(APPEND dirlist ${child})
endif()
endforeach()
set(${result} ${dirlist} PARENT_SCOPE)
endfunction()
if (${do_translate})
translation_dir_list(LANGUAGES ${TRANSLATIONS_SRC_DIR})
message(STATUS "Detected language files: ${LANGUAGES}")
set(translation_res "${PROJECT_BINARY_DIR}/translations.qrc")
add_custom_target(fgfs_qm_files ALL)
file(WRITE ${translation_res} "<RCC>\n<qresource prefix=\"/\">\n")
# qm generation and installation
foreach(LANG ${LANGUAGES})
# avoid issue if the FGData we found is a different version, and a translation is
# missing: just skip it
if (NOT EXISTS ${TRANSLATIONS_SRC_DIR}/${LANG}/FlightGear-Qt.xlf)
continue()
endif()
set(out_file "${PROJECT_BINARY_DIR}/FlightGear_${LANG}.qm")
add_custom_command(
OUTPUT ${out_file}
COMMAND Qt5::lrelease ${TRANSLATIONS_SRC_DIR}/${LANG}/FlightGear-Qt.xlf
-qm ${out_file}
DEPENDS ${TRANSLATIONS_SRC_DIR}/${LANG}/FlightGear-Qt.xlf
)
add_custom_target(fgfs_${LANG}_qm ALL DEPENDS ${out_file})
add_dependencies(fgfs_qm_files fgfs_${LANG}_qm)
# fix for bug https://sourceforge.net/p/flightgear/codetickets/2406/
# ensure we expose the English translations in a 'short' form, so that
# the QTranslator search order finds it
if (${LANG} STREQUAL "en_US")
message(STATUS "Wibble")
file(APPEND ${translation_res} "<file alias=\"FlightGear_en.qm\">FlightGear_${LANG}.qm</file>\n")
else()
# local path needed here, not absolute
file(APPEND ${translation_res} "<file>FlightGear_${LANG}.qm</file>\n")
endif()
endforeach()
file(APPEND ${translation_res} "</qresource>\n</RCC>")
# set this so config.h can detect it
set(HAVE_QRC_TRANSLATIONS TRUE)
add_custom_target(ts)
foreach(lang ${LANGUAGES})
add_custom_target(
ts_${lang}
COMMAND Qt5::lupdate ${CMAKE_SOURCE_DIR}/src/GUI
-locations relative -no-ui-lines -ts ${TRANSLATIONS_SRC_DIR}/${lang}/FlightGear-Qt.xlf
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)
add_dependencies(ts ts_${lang})
endforeach()
endif() # of do translate