add xmake lib

[CppCXY]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @CppCXY, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a comprehensive Lua path utility library, designed to provide robust cross-platform path manipulation capabilities. It aims to centralize and standardize path operations, offering functions for normalization, joining, splitting, and converting paths, as well as specialized handling for environment variables, thereby enhancing code consistency and maintainability across different operating systems. The addition of an object-oriented pathobj further streamlines complex path management workflows.

Highlights

• New Path Utility Library: A new Lua library (path.lua) has been added, providing comprehensive cross-platform path manipulation functionalities.
• Extensive Path Operations: The library includes a wide range of functions for path normalization, joining, splitting, converting to absolute/relative paths, and handling platform-specific formats (e.g., Unix, Cygwin).
• Environment Variable Handling: Dedicated functions are provided for splitting and joining environment PATH variables, accommodating special cases like quotes and flags.
• Object-Oriented Path Management: The library introduces a pathobj class with instance methods, allowing for object-oriented manipulation of path strings, including cloning and transformation capabilities.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request adds EmmyLua annotations for the path standard library, which will improve static analysis and code completion for xmake scripts. The definitions for the path module and pathobj class are comprehensive. I've found a couple of minor issues with the annotation of variadic functions and suggested corrections to align with the EmmyLua standard.

[gemini-code-assist]

The annotation ---@param ... is not the standard way to specify typed variadic arguments in EmmyLua. To correctly document the variadic arguments for this function, you should use ---@vararg instead. This will ensure that static analysis tools correctly interpret the function signature.

---@vararg string|pathobj

[gemini-code-assist]

Similar to the path.join function, the ---@param ... annotation for variadic arguments is non-standard. Please use ---@vararg for correct type annotation.

---@vararg string|pathobj