libxpkg/xmake.lua at main · openxlings/libxpkg · GitHub

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add_rules("mode.debug", "mode.release")
set_languages("c++23")

add_repositories("mcpplibs-index https://github.com/mcpplibs/mcpplibs-index.git")
add_requires("mcpplibs-capi-lua 0.0.2")

-- Data model (zero external deps)
target("mcpplibs-xpkg")
    set_kind("static")
    add_files("src/xpkg.cppm", {public = true, install = true})
    set_policy("build.c++.modules", true)

-- Loader (parses .lua package files)
target("mcpplibs-xpkg-loader")
    set_kind("static")
    add_deps("mcpplibs-xpkg")
    add_packages("mcpplibs-capi-lua", {public = true})
    add_files("src/xpkg-loader.cppm", {public = true, install = true})
    set_policy("build.c++.modules", true)

-- Index (pure C++ operations)
target("mcpplibs-xpkg-index")
    set_kind("static")
    add_deps("mcpplibs-xpkg")
    add_files("src/xpkg-index.cppm", {public = true, install = true})
    set_policy("build.c++.modules", true)

-- Lua stdlib module (generated from src/lua-stdlib/ at build time)
target("mcpplibs-xpkg-lua-stdlib")
    set_kind("static")
    add_files("src/xpkg-lua-stdlib.cppm", {public = true, install = true})
    set_policy("build.c++.modules", true)
    before_build(function(target)
        local proj = target:scriptdir()
        local outfile = path.join(proj, "src/xpkg-lua-stdlib.cppm")
        local f = io.open(outfile, "w")
        f:write("// Auto-generated by xmake before_build — do not edit manually\n")
        f:write("module;\n")
        f:write("export module mcpplibs.xpkg.lua_stdlib;\n")
        f:write("import std;\n\n")
        f:write("export namespace mcpplibs::xpkg::detail {\n\n")

        -- MSVC C2026: string literal max 16380 bytes; split large files
        local MSVC_LIMIT = 15000
        local function embed(varname, rel_path)
            local content = io.readfile(path.join(proj, rel_path))
            if #content <= MSVC_LIMIT then
                f:write("inline constexpr std::string_view " .. varname)
                f:write(" = R\"__LUA__(\n")
                f:write(content)
                f:write("\n)__LUA__\";\n\n")
            else
                -- Split into chunks joined via operator+
                local chunks = {}
                local pos = 1
                local idx = 0
                while pos <= #content do
                    local chunk = content:sub(pos, pos + MSVC_LIMIT - 1)
                    -- Avoid splitting in the middle of a line
                    if pos + MSVC_LIMIT - 1 < #content then
                        local nl = chunk:reverse():find("\n")
                        if nl and nl < MSVC_LIMIT then
                            chunk = content:sub(pos, pos + MSVC_LIMIT - nl - 1)
                        end
                    end
                    local cname = varname .. "_" .. idx
                    f:write("inline constexpr std::string_view " .. cname)
                    f:write(" = R\"__LUA__(\n")
                    f:write(chunk)
                    f:write("\n)__LUA__\";\n\n")
                    chunks[#chunks + 1] = cname
                    pos = pos + #chunk
                    idx = idx + 1
                end
                -- Concatenate via a function
                f:write("inline const std::string " .. varname .. "_storage = []{ std::string s;\n")
                for _, c in ipairs(chunks) do
                    f:write("    s += " .. c .. ";\n")
                end
                f:write("    return s; }();\n")
                f:write("inline const std::string_view " .. varname)
                f:write(" = " .. varname .. "_storage;\n\n")
            end
        end

        embed("prelude_lua",    "src/lua-stdlib/prelude.lua")
        embed("log_lua",        "src/lua-stdlib/xim/libxpkg/log.lua")
        embed("pkginfo_lua",    "src/lua-stdlib/xim/libxpkg/pkginfo.lua")
        embed("system_lua",     "src/lua-stdlib/xim/libxpkg/system.lua")
        embed("xvm_lua",        "src/lua-stdlib/xim/libxpkg/xvm.lua")
        embed("utils_lua",      "src/lua-stdlib/xim/libxpkg/utils.lua")
        embed("pkgmanager_lua", "src/lua-stdlib/xim/libxpkg/pkgmanager.lua")
        embed("elfpatch_lua",   "src/lua-stdlib/xim/libxpkg/elfpatch.lua")
        embed("json_lua",       "src/lua-stdlib/xim/libxpkg/json.lua")
        embed("base64_lua",     "src/lua-stdlib/xim/libxpkg/base64.lua")

        f:write("} // namespace mcpplibs::xpkg::detail\n")
        f:close()
        cprint("${green}[xpkg]${clear} generated src/xpkg-lua-stdlib.cppm")
    end)

-- Executor (runs package hooks via Lua)
target("mcpplibs-xpkg-executor")
    set_kind("static")
    add_deps("mcpplibs-xpkg", "mcpplibs-xpkg-lua-stdlib")
    add_packages("mcpplibs-capi-lua", {public = true})
    add_files("src/xpkg-executor.cppm", {public = true, install = true})
    set_policy("build.c++.modules", true)

-- Aggregate target: add_deps("xpkg") to get all modules
target("xpkg")
    set_kind("phony")
    add_deps("mcpplibs-xpkg", "mcpplibs-xpkg-loader",
             "mcpplibs-xpkg-index", "mcpplibs-xpkg-lua-stdlib",
             "mcpplibs-xpkg-executor")
    add_packages("mcpplibs-capi-lua", {public = true})

if not is_host("macosx") then
    includes("examples", "tests")
end