# Translations.cmake, CMake macros written for Marlin, feel free to re-use them

macro (add_translations_directory NLS_PACKAGE)
    add_custom_target (i18n ALL COMMENT “Building i18n messages.”)
    find_program (MSGFMT_EXECUTABLE msgfmt)
    # be sure that all languages are present
    # Using all usual languages code from https://www.gnu.org/software/gettext/manual/html_node/Language-Codes.html#Language-Codes
    # Rare language codes should be added on-demand.
    file(STRINGS LINGUAS LANGUAGES_NEEDED)
    foreach (LANGUAGE_NEEDED ${LANGUAGES_NEEDED})
        create_po_file (${LANGUAGE_NEEDED})
    endforeach (LANGUAGE_NEEDED ${LANGUAGES_NEEDED})
    # generate .mo from .po
    file (GLOB PO_FILES ${CMAKE_CURRENT_SOURCE_DIR}/*.po)
    foreach (PO_INPUT ${PO_FILES})
        get_filename_component (PO_INPUT_BASE ${PO_INPUT} NAME_WE)
        set (MO_OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${PO_INPUT_BASE}.mo)
        set (PO_COPY ${CMAKE_CURRENT_BINARY_DIR}/${PO_INPUT_BASE}.po)
        file (COPY ${PO_INPUT} DESTINATION ${CMAKE_CURRENT_BINARY_DIR})
        add_custom_command (TARGET i18n COMMAND ${MSGFMT_EXECUTABLE} -o ${MO_OUTPUT} ${PO_INPUT})

        install (FILES ${MO_OUTPUT} DESTINATION
            ${CMAKE_INSTALL_DATAROOTDIR}/locale/${PO_INPUT_BASE}/LC_MESSAGES
            RENAME ${NLS_PACKAGE}.mo
            COMPONENT ${ARGV1})
    endforeach (PO_INPUT ${PO_FILES})
endmacro (add_translations_directory)

# Apply the right default template.
macro (create_po_file LANGUAGE_NEEDED)
    set (FILE ${CMAKE_CURRENT_SOURCE_DIR}/${LANGUAGE_NEEDED}.po)
    if (NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${LANGUAGE_NEEDED}.po)
        file (APPEND ${FILE} "msgid \"\"\n")
        file (APPEND ${FILE} "msgstr \"\"\n")
        file (APPEND ${FILE} "\"MIME-Version: 1.0\\n\"\n")
        file (APPEND ${FILE} "\"Content-Type: text/plain; charset=UTF-8\\n\"\n")

        if ("${LANGUAGE_NEEDED}" STREQUAL "ja"
            OR "${LANGUAGE_NEEDED}" STREQUAL "vi"
            OR "${LANGUAGE_NEEDED}" STREQUAL "ko")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=2; plural=n == 1 ? 0 : 1;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "en"
            OR "${LANGUAGE_NEEDED}" STREQUAL "de"
            OR "${LANGUAGE_NEEDED}" STREQUAL "nl"
            OR "${LANGUAGE_NEEDED}" STREQUAL "sv"
            OR "${LANGUAGE_NEEDED}" STREQUAL "nb"
            OR "${LANGUAGE_NEEDED}" STREQUAL "nn"
            OR "${LANGUAGE_NEEDED}" STREQUAL "nb"
            OR "${LANGUAGE_NEEDED}" STREQUAL "no"
            OR "${LANGUAGE_NEEDED}" STREQUAL "fo"
            OR "${LANGUAGE_NEEDED}" STREQUAL "es"
            OR "${LANGUAGE_NEEDED}" STREQUAL "pt"
            OR "${LANGUAGE_NEEDED}" STREQUAL "it"
            OR "${LANGUAGE_NEEDED}" STREQUAL "bg"
            OR "${LANGUAGE_NEEDED}" STREQUAL "he"
            OR "${LANGUAGE_NEEDED}" STREQUAL "fi"
            OR "${LANGUAGE_NEEDED}" STREQUAL "et"
            OR "${LANGUAGE_NEEDED}" STREQUAL "eo"
            OR "${LANGUAGE_NEEDED}" STREQUAL "hu"
            OR "${LANGUAGE_NEEDED}" STREQUAL "tr"
            OR "${LANGUAGE_NEEDED}" STREQUAL "es")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=2; plural=n != 1;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "fr"
            OR "${LANGUAGE_NEEDED}" STREQUAL "fr_CA"
            OR "${LANGUAGE_NEEDED}" STREQUAL "pt_BR")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=2; plural=n>1;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "lv")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n != 0 ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "ro")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=n==1 ? 0 : (n==0 || (n%100 > 0 && n%100 < 20)) ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "lt")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "ru"
            OR "${LANGUAGE_NEEDED}" STREQUAL "uk"
            OR "${LANGUAGE_NEEDED}" STREQUAL "be"
            OR "${LANGUAGE_NEEDED}" STREQUAL "sr"
            OR "${LANGUAGE_NEEDED}" STREQUAL "hr")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "cs"
            OR "${LANGUAGE_NEEDED}" STREQUAL "sk")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "pl")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=3; plural=n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\\n\"\n")
        elseif ("${LANGUAGE_NEEDED}" STREQUAL "sl")
                file (APPEND ${FILE} "\"Plural-Forms: nplurals=4; plural=n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3;\\n\"\n")
        endif ()

    endif ()
endmacro (create_po_file)

macro (add_translations_catalog NLS_PACKAGE)
    add_custom_target (pot COMMENT “Building translation catalog.”)
    find_program (XGETTEXT_EXECUTABLE xgettext)

    set(C_SOURCE "")

    foreach(FILES_INPUT ${ARGN})
        set(BASE_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/${FILES_INPUT})

        file (GLOB_RECURSE SOURCE_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/ ${BASE_DIRECTORY}/*.c)
        foreach(C_FILE ${SOURCE_FILES})
            set(C_SOURCE ${C_SOURCE} ${C_FILE})
        endforeach()
    endforeach()

    set(BASE_XGETTEXT_COMMAND
        ${XGETTEXT_EXECUTABLE} -d ${NLS_PACKAGE}
        -o ${CMAKE_CURRENT_SOURCE_DIR}/${NLS_PACKAGE}.pot
        --add-comments="/" --keyword="_" --keyword="N_" --keyword="C_:1c,2" --keyword="NC_:1c,2" --keyword="ngettext:1,2" --keyword="Q_:1g" --from-code=UTF-8)

   set(CONTINUE_FLAG "")

    IF(NOT "${C_SOURCE}" STREQUAL "")
        add_custom_command(TARGET pot WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} COMMAND ${BASE_XGETTEXT_COMMAND} ${C_SOURCE})
        set(CONTINUE_FLAG "-j")
    ENDIF()
endmacro ()