utils.bin2obj/bin2c 生成前提供额外的转换函数

[Stehsaer]

你在什么场景下需要该功能？

在工程中，有时需要使用lz4压缩素材后再让util.bin2obj/bin2c生成对象文件。然而当前如果需要实现的话，需要自己手写一套单独的rule。在utils.bin2obj/bin2c内置这个辅助选项的话可以大幅减少工作量。

描述可能的解决方案

在生成文件前，提供一个transform选项：

add_files(
    "asset/*.bin", 
    {
        rules = "utils.bin2obj",
        transform = function (input, output)
            -- 执行压缩并输出到output，或者任何其他自定义的变换
        end
    }
)

具体执行时，检测到transform时，先transform(input_file, temp_file)得到转换后的文件，然后再调用生成。

描述你认为的候选方案

No response

其他信息

No response

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

Title: utils.bin2obj/bin2c provides additional conversion functions before generation

In what scenario do you need this feature?

In projects, sometimes you need to use lz4 to compress the material and then let util.bin2obj/bin2c generate the object file. However, if you need to implement it currently, you need to write a separate set of rules by yourself. If this auxiliary option is built into utils.bin2obj/bin2c, the workload can be greatly reduced.

Describe possible solutions

Before generating the file, provide a transform option:

add_files(
    "asset/*.bin",
    {
        rules = "utils.bin2obj",
        transform = function (input, output)
            -- Perform compression and output to output, or any other custom transformation
        end
    }
)

During specific execution, when transform is detected, transform(input_file, temp_file) first obtains the converted file, and then calls generation.

Describe your alternatives

No response

Other information

No response

[Stehsaer]

这个特性有一个额外的难点：当前utils.bin2c和utils.bin2obj均使用preparecmd和buildcmd，支持CMakeLists等第三方构建脚本的导出，但是一旦引入transform后，这部分可能就出问题了

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

This feature has an additional difficulty: currently both utils.bin2c and utils.bin2obj use preparecmd and buildcmd to support the export of third-party build scripts such as CMakeLists. However, once transform is introduced, this part may cause problems.

[waruqi]

这个特性有一个额外的难点：当前utils.bin2c和utils.bin2obj均使用preparecmd和buildcmd，支持CMakeLists等第三方构建脚本的导出，但是一旦引入transform后，这部分可能就出问题了

暂时不考虑 transform， 自己处理下也没几行代码，xmake 里面也是这么搞的。没必要什么特性都内置，bin2obj 里提供额外的处理函数，跟用现成的 on_config 等处理函数，没本质不同，只是换个地方写而已。尽可能复用现有已知的接口和rule ，否则只会越来越复杂。

xmake/core/src/xmake/xmake.lua

Lines 64 to 72 in a0add31

	add_rules("utils.bin2obj", {extensions = ".xmz"})
	on_config(function (target)
	import("utils.archive.archive")
	if has_config("embed") then
	local archivefile = path.join(target:autogendir(), "bin2obj", "xmake.xmz")
	print("archiving %s ..", archivefile)
	os.tryrm(archivefile)
	local rootdir = path.normalize(path.join(os.projectdir(), "..", "xmake"))
	archive(archivefile, rootdir, {recurse = true, curdir = rootdir})

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

---

This feature has an additional difficulty: currently both utils.bin2c and utils.bin2obj use preparecmd and buildcmd to support the export of third-party build scripts such as CMakeLists, but once transform is introduced, this part may go wrong.

I won't consider transform for the moment. I don't have a few lines of code to handle it myself. This is also done in xmake.

xmake/core/src/xmake/xmake.lua

Lines 64 to 72 in a0add31

	add_rules("utils.bin2obj", {extensions = ".xmz"})
	on_config(function (target)
	import("utils.archive.archive")
	if has_config("embed") then
	local archivefile = path.join(target:autogendir(), "bin2obj", "xmake.xmz")
	print("archiving %s ..", archivefile)
	os.tryrm(archivefile)
	local rootdir = path.normalize(path.join(os.projectdir(), "..", "xmake"))
	archive(archivefile, rootdir, {recurse = true, curdir = rootdir})