vcpkg/scripts/cmake/vcpkg_extract_source_archive.cmake

function(z_vcpkg_extract_source_archive_deprecated_mode archive working_directory)
    cmake_path(GET archive FILENAME archive_filename)
    if(NOT EXISTS "${working_directory}/${archive_filename}.extracted")
        message(STATUS "Extracting source ${archive}")
        file(MAKE_DIRECTORY "${working_directory}")
        vcpkg_execute_required_process(
            ALLOW_IN_DOWNLOAD_MODE
            COMMAND "${CMAKE_COMMAND}" -E tar xjf "${archive}"
            WORKING_DIRECTORY "${working_directory}"
            LOGNAME extract
        )
        file(TOUCH "${working_directory}/${archive_filename}.extracted")
    endif()
endfunction()

function(vcpkg_extract_source_archive)
    if(ARGC LESS_EQUAL "2")
        z_vcpkg_deprecation_message( "Deprecated form of vcpkg_extract_source_archive used:
    Please use the `vcpkg_extract_source_archive(<out-var> ARCHIVE <archive>)` form.")
        if(ARGC EQUAL "0")
            message(FATAL_ERROR "vcpkg_extract_source_archive requires at least one argument.")
        endif()

        set(archive "${ARGV0}")
        if(ARGC EQUAL "1")
            set(working_directory "${CURRENT_BUILDTREES_DIR}/src")
        else()
            set(working_directory "${ARGV1}")
        endif()

        z_vcpkg_extract_source_archive_deprecated_mode("${archive}" "${working_directory}")
        return()
    endif()

    set(out_source_path "${ARGV0}")
    cmake_parse_arguments(PARSE_ARGV 1 "arg"
        "NO_REMOVE_ONE_LEVEL;SKIP_PATCH_CHECK;Z_ALLOW_OLD_PARAMETER_NAMES"
        "ARCHIVE;SOURCE_BASE;BASE_DIRECTORY;WORKING_DIRECTORY;REF"
        "PATCHES"
    )

    if(DEFINED arg_REF)
        if(NOT arg_Z_ALLOW_OLD_PARAMETER_NAMES)
            message(FATAL_ERROR "Unexpected argument REF")
        elseif(DEFINED arg_SOURCE_BASE)
            message(FATAL_ERROR "Cannot specify both REF and SOURCE_BASE")
        else()
            string(REPLACE "/" "-" arg_SOURCE_BASE "${arg_REF}")
        endif()
    endif()

    if(DEFINED arg_UNPARSED_ARGUMENTS)
        message(FATAL_ERROR "${CMAKE_CURRENT_FUNCTION} was passed extra arguments: ${arg_UNPARSED_ARGUMENTS}")
    endif()
    if(NOT DEFINED arg_ARCHIVE)
        message(FATAL_ERROR "ARCHIVE must be specified")
    endif()

    if(DEFINED arg_WORKING_DIRECTORY)
        if(DEFINED arg_BASE_DIRECTORY)
            message(FATAL_ERROR "Cannot specify both BASE_DIRECTORY and WORKING_DIRECTORY")
        elseif(NOT IS_ABSOLUTE "${arg_WORKING_DIRECTORY}")
            message(FATAL_ERROR "WORKING_DIRECTORY (${arg_WORKING_DIRECTORY}) must be an absolute path")
        endif()
        set(working_directory "${arg_WORKING_DIRECTORY}")
    else()
        if(NOT DEFINED arg_BASE_DIRECTORY)
            set(arg_BASE_DIRECTORY "src")
        elseif(IS_ABSOLUTE "${arg_BASE_DIRECTORY}")
            message(FATAL_ERROR "BASE_DIRECTORY (${arg_BASE_DIRECTORY}) must be a relative path")
        endif()
        cmake_path(APPEND CURRENT_BUILDTREES_DIR "${arg_BASE_DIRECTORY}"
            OUTPUT_VARIABLE working_directory)
    endif()

    if(NOT DEFINED arg_SOURCE_BASE)
        cmake_path(GET arg_ARCHIVE STEM arg_SOURCE_BASE)
    elseif(arg_SOURCE_BASE MATCHES [[\\|/]])
        message(FATAL_ERROR "SOURCE_BASE (${arg_SOURCE_BASE}) must not contain slashes")
    endif()

    # Take the last 10 chars of the base
    set(base_max_length 10)
    string(LENGTH "${arg_SOURCE_BASE}" source_base_length)
    if(source_base_length GREATER base_max_length)
        math(EXPR start "${source_base_length} - ${base_max_length}")
        string(SUBSTRING "${arg_SOURCE_BASE}" "${start}" -1 arg_SOURCE_BASE)
    endif()

    # Hash the archive hash along with the patches. Take the first 10 chars of the hash
    file(SHA512 "${arg_ARCHIVE}" patchset_hash)
    foreach(patch IN LISTS arg_PATCHES)
        cmake_path(ABSOLUTE_PATH patch
            BASE_DIRECTORY "${CURRENT_PORT_DIR}"
            OUTPUT_VARIABLE absolute_patch
        )
        if(NOT EXISTS "${absolute_patch}")
            message(FATAL_ERROR "Could not find patch: '${patch}'")
        endif()
        file(SHA512 "${absolute_patch}" current_hash)
        string(APPEND patchset_hash "${current_hash}")
    endforeach()

    string(SHA512 patchset_hash "${patchset_hash}")
    string(SUBSTRING "${patchset_hash}" 0 10 patchset_hash)
    cmake_path(APPEND working_directory "${arg_SOURCE_BASE}-${patchset_hash}"
        OUTPUT_VARIABLE source_path
    )

    if(_VCPKG_EDITABLE AND EXISTS "${source_path}")
        set("${out_source_path}" "${source_path}" PARENT_SCOPE)
        message(STATUS "Using source at ${source_path}")
        return()
    elseif(NOT _VCPKG_EDITABLE)
        cmake_path(APPEND_STRING source_path ".clean")
        if(EXISTS "${source_path}")
            message(STATUS "Cleaning sources at ${source_path}. Use --editable to skip cleaning for the packages you specify.")
            file(REMOVE_RECURSE "${source_path}")
        endif()
    endif()

    message(STATUS "Extracting source ${arg_ARCHIVE}")
    cmake_path(APPEND_STRING source_path ".tmp" OUTPUT_VARIABLE temp_dir)
    file(REMOVE_RECURSE "${temp_dir}")
    file(MAKE_DIRECTORY "${temp_dir}")
    vcpkg_execute_required_process(
        ALLOW_IN_DOWNLOAD_MODE
        COMMAND "${CMAKE_COMMAND}" -E tar xjf "${arg_ARCHIVE}"
        WORKING_DIRECTORY "${temp_dir}"
        LOGNAME extract
    )

    if(arg_NO_REMOVE_ONE_LEVEL)
        cmake_path(SET temp_source_path "${temp_dir}")
    else()
        file(GLOB archive_directory "${temp_dir}/*")
        # Exclude .DS_Store entries created by the finder on macOS
        list(FILTER archive_directory EXCLUDE REGEX ".*/.DS_Store$")
        # make sure `archive_directory` is only a single file
        if(NOT archive_directory MATCHES ";" AND IS_DIRECTORY "${archive_directory}")
            cmake_path(SET temp_source_path "${archive_directory}")
        else()
            message(FATAL_ERROR "Could not unwrap top level directory from archive. Pass NO_REMOVE_ONE_LEVEL to disable this.")
        endif()
    endif()

    if (arg_SKIP_PATCH_CHECK)
        set(quiet_param QUIET)
    else()
        set(quiet_param "")
    endif()

    z_vcpkg_apply_patches(
        SOURCE_PATH "${temp_source_path}"
        PATCHES ${arg_PATCHES}
        ${quiet_param}
    )

    file(RENAME "${temp_source_path}" "${source_path}")
    file(REMOVE_RECURSE "${temp_dir}")

    set("${out_source_path}" "${source_path}" PARENT_SCOPE)
    message(STATUS "Using source at ${source_path}")
endfunction()