diff options
| -rw-r--r-- | modules/ECMCreateQmFromPoFiles.cmake | 133 | ||||
| -rw-r--r-- | modules/ECMQmLoader.cpp.in | 34 |
2 files changed, 167 insertions, 0 deletions
diff --git a/modules/ECMCreateQmFromPoFiles.cmake b/modules/ECMCreateQmFromPoFiles.cmake new file mode 100644 index 00000000..b383311a --- /dev/null +++ b/modules/ECMCreateQmFromPoFiles.cmake @@ -0,0 +1,133 @@ +# ecm_create_qm_from_po_files(PO_DIR <po_dir> +# POT_NAME <pot_name> +# [DATA_INSTALL_DIR <data_install_dir>] +# [DATA_INSTALL_SUB_DIR <data_install_sub_dir>] +# [CREATE_LOADER <source_file_var>]) +# +# ecm_create_qm_from_po_files() creates the necessary rules to compile .po +# files into .qm files, usable by QTranslator. It can also generate a C++ file +# which takes care of automatically loading those translations. +# +# PO_DIR is the path to a directory containing .po files. +# +# POT_NAME is the name of the .pot file for the project. This file must be in +# PO_DIR. +# +# .qm files are installed in "DATA_INSTALL_DIR/DATA_INSTALL_SUB_DIR". +# +# DATA_INSTALL_DIR defaults to ${DATA_INSTALL_DIR} if defined, otherwise it uses +# "share". It must point to a directory which is in the list returned by: +# +# QStandardPath::standardLocations(QStandardPath::GenericDataLocation) +# +# otherwise the C++ loader will fail to load the translations. +# +# DATA_INSTALL_SUB_DIR defaults to the value of POT_NAME, without the ".pot" +# extension. +# +# ecm_create_qm_from_po_files() creates a "translation" target. This target +# builds all .po files into .qm files. +# +# If ecm_create_qm_from_po_files() is called with the CREATE_LOADER argument, +# it generates a C++ file which ensures translations are automatically loaded +# at startup. The path of the .cpp file is stored in <source_file_var>. This +# variable must be added to the list of sources to build, like this: +# +# ecm_create_qm_from_po_files(PO_DIR po POT_NAME mylib CREATE_LOADER myloader) +# set(mylib_SRCS foo.cpp bar.cpp ${myloader}) +# add_library(mylib ${mylib_SRCS}) +# +# Copyright (c) 2014, Aurélien Gâteau, <agateau@kde.org> +# +# Redistribution and use is allowed according to the terms of the BSD license. +# For details see the accompanying COPYING-CMAKE-SCRIPTS file. + +# This gives us Qt5::lrelease and Qt5::lupdate but unfortunately no Qt5::lconvert +# See https://bugreports.qt-project.org/browse/QTBUG-37937 +find_package(Qt5LinguistTools CONFIG REQUIRED) + +function(_ecm_qm_create_target po_dir pot_name data_install_dir data_install_sub_dir) + # Find lconvert + get_target_property(lrelease_location Qt5::lrelease LOCATION) + get_filename_component(lrelease_path ${lrelease_location} PATH) + find_program(lconvert_executable + NAMES lconvert-qt5 lconvert + PATHS ${lrelease_path} + ) + + file(GLOB po_files "${po_dir}/*.po") + foreach (it ${po_files}) + # PO files are foo-en_GB.po not foo_en_GB.po like Qt expects. Get a + # proper filename. + get_filename_component(it ${it} ABSOLUTE) + get_filename_component(file_with_dash ${it} NAME_WE) + string(REPLACE "-" "_" filename_base "${file_with_dash}") + + file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) + set(tsfile ${CMAKE_CURRENT_BINARY_DIR}/${filename_base}.ts) + set(qmfile ${CMAKE_CURRENT_BINARY_DIR}/${filename_base}.qm) + + # lconvert from .po to .ts and then run lupdate to generate the correct + # strings. Finally run lrelease to create the .qm files. + add_custom_command(OUTPUT ${qmfile} + COMMAND ${lconvert_executable} + ARGS -i ${it} -o ${tsfile} + COMMAND Qt5::lupdate + ARGS ${CMAKE_SOURCE_DIR}/src -silent -noobsolete -ts ${tsfile} + COMMAND Qt5::lrelease + ARGS -compress -removeidentical -silent ${tsfile} -qm ${qmfile} + DEPENDS ${it} + ) + set(qmfiles ${qmfiles} ${qmfile}) + endforeach() + + if(NOT TARGET translations) + add_custom_target(translations ALL) + endif() + add_custom_target(translations-${pot_name} DEPENDS ${qmfiles}) + add_dependencies(translations translations-${pot_name}) + + install(FILES ${qmfiles} DESTINATION ${data_install_dir}/${data_install_sub_dir}) +endfunction() + +function(_ecm_qm_create_loader pot_name data_install_sub_dir) + # data_install_sub_dir is used in ECMQmLoader.cpp.in + get_filename_component(qm_name ${pot_name} NAME_WE) + configure_file(${ECM_MODULE_DIR}/ECMQmLoader.cpp.in ECMQmLoader.cpp @ONLY) +endfunction() + +function(ECM_CREATE_QM_FROM_PO_FILES) + set(options) + set(oneValueArgs PO_DIR POT_NAME DATA_INSTALL_DIR DATA_INSTALL_SUB_DIR CREATE_LOADER) + set(multiValueArgs) + cmake_parse_arguments(ARGS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN}) + + if(ARGS_UNPARSED_ARGUMENTS) + message(FATAL_ERROR "Unknown keywords given to ECM_CREATE_QM_FROM_PO_FILES(): \"${ARGS_UNPARSED_ARGUMENTS}\"") + endif() + + if(NOT ARGS_PO_DIR) + message(FATAL_ERROR "Required argument PO_DIR missing in ECM_CREATE_QM_FROM_PO_FILES() call") + endif() + + if(NOT ARGS_POT_NAME) + message(FATAL_ERROR "Required argument POT_NAME missing in ECM_CREATE_QM_FROM_PO_FILES() call") + endif() + + if(NOT ARGS_DATA_INSTALL_DIR) + if (DATA_INSTALL_DIR) + set(ARGS_DATA_INSTALL_DIR ${DATA_INSTALL_DIR}) + else() + set(ARGS_DATA_INSTALL_DIR share) + endif() + endif() + if(NOT ARGS_DATA_INSTALL_SUB_DIR) + get_filename_component(ARGS_DATA_INSTALL_SUB_DIR "${ARGS_POT_NAME}" NAME_WE) + endif() + + _ecm_qm_create_target(${ARGS_PO_DIR} ${ARGS_POT_NAME} ${ARGS_DATA_INSTALL_DIR} ${ARGS_DATA_INSTALL_SUB_DIR}) + if (ARGS_CREATE_LOADER) + _ecm_qm_create_loader(${ARGS_POT_NAME} ${ARGS_DATA_INSTALL_SUB_DIR}) + set(${ARGS_CREATE_LOADER} ${CMAKE_CURRENT_BINARY_DIR}/ECMQmLoader.cpp PARENT_SCOPE) + endif() +endfunction() diff --git a/modules/ECMQmLoader.cpp.in b/modules/ECMQmLoader.cpp.in new file mode 100644 index 00000000..92c0d07a --- /dev/null +++ b/modules/ECMQmLoader.cpp.in @@ -0,0 +1,34 @@ +/* This file is generated by ECM_CREATE_QM_FROM_PO_FILES. Do not modify! + * + * Building this file in a library ensures translations are automatically loaded + * when an application makes use of the library. + */ +#include <QCoreApplication> +#include <QLocale> +#include <QStandardPaths> +#include <QTranslator> + +static QTranslator *createTranslator() +{ + QString installSubDir = QStringLiteral("@data_install_sub_dir@"); + QString qmName = QStringLiteral("@qm_name@"); + + QString lang = QLocale::system().name(); + QString dir = QStandardPaths::locate(QStandardPaths::GenericDataLocation, installSubDir, QStandardPaths::LocateDirectory); + QTranslator *translator = new QTranslator(QCoreApplication::instance()); + translator->load(qmName + QStringLiteral("_") + lang, dir); + return translator; +} + +static void load() +{ + QTranslator *translator = createTranslator(); + if (translator->isEmpty()) { + delete translator; + return; + } + translator->setParent(QCoreApplication::instance()); + QCoreApplication::instance()->installTranslator(translator); +} + +Q_COREAPP_STARTUP_FUNCTION(load) |