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# SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
# SPDX-License-Identifier: GPL-3.0-or-later
# SPDX-FileCopyrightText: 2023 yuzu Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
set(ZONE_PATH ${CMAKE_ARGV3})
set(HEADER_NAME ${CMAKE_ARGV4})
set(NX_TZDB_INCLUDE_DIR ${CMAKE_ARGV5})
set(NX_TZDB_SOURCE_DIR ${CMAKE_ARGV6})
execute_process(
COMMAND ${CMAKE_COMMAND} -P ${NX_TZDB_SOURCE_DIR}/ListFilesInDirectory.cmake
WORKING_DIRECTORY ${ZONE_PATH}
OUTPUT_VARIABLE FILE_LIST)
if (NOT FILE_LIST)
message(FATAL_ERROR "No timezone files found in directory ${ZONE_PATH}, did the download fail?")
endif()
set(DIRECTORY_NAME ${HEADER_NAME})
set(FILE_DATA "")
string(APPEND FILE_DATA "[[nodiscard]] static inline std::vector<FileSys::VirtualFile> CollectFiles_${DIRECTORY_NAME}() {\n")
string(APPEND FILE_DATA [[
std::vector<FileSys::VirtualFile> vfs_files;
auto const fn = [&](std::string_view name, std::span<const u8> data) {
vfs_files.push_back(std::make_shared<FileSys::VectorVfsFile>(
std::vector<u8>(data.begin(), data.end()),
std::string{name}
));
};
]])
foreach(ZONE_FILE ${FILE_LIST})
if (ZONE_FILE STREQUAL "\n")
continue()
endif()
string(APPEND FILE_DATA " {\n")
string(APPEND FILE_DATA " constexpr uint8_t tzdb_data[] = {\n")
file(READ ${ZONE_PATH}/${ZONE_FILE} ZONE_DATA HEX)
string(LENGTH "${ZONE_DATA}" ZONE_DATA_LEN)
foreach(I RANGE 0 ${ZONE_DATA_LEN} 2)
math(EXPR BREAK_LINE "(${I} + 2) % 38")
string(SUBSTRING "${ZONE_DATA}" "${I}" 2 HEX_DATA)
if (NOT HEX_DATA)
break()
endif()
string(APPEND FILE_DATA "0x${HEX_DATA},")
if (BREAK_LINE EQUAL 0)
string(APPEND FILE_DATA "\n")
else()
string(APPEND FILE_DATA " ")
endif()
endforeach()
string(APPEND FILE_DATA " };\n")
string(APPEND FILE_DATA " fn(\"${ZONE_FILE}\", tzdb_data);\n")
string(APPEND FILE_DATA " }\n")
endforeach()
string(APPEND FILE_DATA " return vfs_files;\n")
string(APPEND FILE_DATA "}\n")
file(READ ${NX_TZDB_SOURCE_DIR}/tzdb_template.h.in NX_TZDB_TEMPLATE_H_IN)
file(CONFIGURE OUTPUT ${NX_TZDB_INCLUDE_DIR}/nx_tzdb/${HEADER_NAME}.h CONTENT "${NX_TZDB_TEMPLATE_H_IN}")
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