开启force-utf8选项后，tb_file_init在mingw平台下的路径编码与Windows下不一致

[jingkaimori]

描述问题

开启force-utf8选项后，tb_file_init仍然假定传入的路径以当前平台的OEM编码，而windows平台下则假定为utf8，因此同样的路径在mingw下生成乱码。

期待的结果

mingw平台的行为和windows平台一致，不输出乱码。

错误信息

tb_file_ref_t file = tb_file_init("\xe6\xb5\x8b\xe8\xaf\x95", TB_FILE_MODE_DIRECT | TB_FILE_MODE_RW | TB_FILE_MODE_CREAT | TB_FILE_MODE_TRUNC);

在mingw平台下生成文件名娴嬭瘯，在Windows下生成文件名测试。

相关环境

• xmake-repo 包 mingw@mingw-w64 8.1.0
• Visual studio 17.7.4

其他信息

无

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Title: After turning on the force-utf8 option, the path encoding of tb_file_init under the mingw platform is inconsistent with that under Windows.

[waruqi]

你调下这里，另外确认下 有没有开 xmake f --charset=y ，开了走 charset 转码，不开走的 libc 的 mbstowcs 接口，实现也不同

https://github.com/tboox/tbox/blob/master/src/tbox/libc/stdlib/mbstowcs.c

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Adjust it here and check whether you have enabled xmake f --charset=y. If enabled, charset transcoding will be enabled. If libc's mbstowcs interface is not enabled, the implementation is also different.

[jingkaimori]

加上--charset=y以后，mingw没问题，但是Windows无法编译：

error: tbox.lib(charset.c.obj) : error LNK2001: 无法解析的外部符号 __imp_CharNextExA
build\windows\x64\release\demo.exe : fatal error LNK1120: 1 个无法解析的外部命令

应该缺user32库

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After adding --charset=y, mingw has no problem, but Windows cannot compile:

error: tbox.lib(charset.c.obj) : error LNK2001: Unresolved external symbol __imp_CharNextExA
build\windows\x64\release\demo.exe: fatal error LNK1120: 1 unresolved external command

The user32 library should be missing

[jingkaimori]

这个是demo包的问题，用xrepo里的包应该没问题

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This is a problem with the demo package. It should be fine if you use the package in xrepo.

[waruqi]

user32 我加上了

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user32 I added