如何使用cargo crate列出项目的源文件? [英] How to list a project's source files using the cargo crate?

问题描述

我正在尝试使用 cargo crate<列出 Rust 项目的源文件/a>.我不能简单地列出目录中存在的所有 .rs 文件，因为我想准确地检索编译器在编译过程中看到的文件，这可能不是全部.rs 文件.

I'm trying to list the source files of a Rust project using the cargo crate. I can not just simply list all the .rs files present in a directory as I want to retrieve exactly the files that the compiler sees during the compilation, which may not be all the .rs files.

我正在Alacritty 存储库上进行我的实验，它有一个货物工作区，共 3 个项目.到目前为止，这是我的代码:

I'm conducting my experiments on the the Alacritty repository, which has a cargo workspace of 3 projects. Here is my code so far:

extern crate cargo;

use std::path::Path;
use cargo::core::Source;

fn main() {
  let path = Path::new("/tmp/alacritty/Cargo.toml");
  let config = cargo::util::config::Config::default().unwrap();

  let ws = cargo::core::Workspace::new(&path, &config).unwrap();

  for pkg in ws.members() {
    println!("found package {}", pkg);

    let config = ws.config();

    let mut src = cargo::sources::PathSource::new(pkg.root(), pkg.package_id().source_id(), config);
    src.update().unwrap();

    let src_files = src.list_files(pkg).unwrap();
    println!("found {} source files", src_files.len());
  }
}

输出如下:

found package alacritty v0.5.0-dev (/tmp/alacritty/alacritty)
found 0 source files
found package alacritty_terminal v0.5.0-dev (/tmp/alacritty/alacritty_terminal)
found 0 source files
found package font v0.1.0 (/tmp/alacritty/font)
found 0 source files

工作区的成员已正确找到，但我无法检索每个成员的源文件.我错过了什么?

The members of the workspace are correctly found but I fail to retrieve the source files for each of these members. What am I missing?

推荐答案

您的代码有效！

如果您在 alacritty 树中运行cargo vendor"，这应该可以解决您的问题.研究 'cargo vendor' 命令 另外，研究 -- 货物构建命令的离线开关.我不需要使用它，但它对阅读很有帮助.

If you run 'cargo vendor' in the alacritty tree, this should solve your issue. Study the 'cargo vendor' command Also, study the --offline switch for the cargo build command. I did not need to use this, but it is very helpful reading.

基本上，货物供应商会提供所有来源.

Basically, cargo vendor pulls in all the source.

我不确定为什么您的代码不起作用.我很难使用/tmp 目录重新创建它.然后我使用了一个普通目录，并结合了对货物供应商"的调用，它起作用了.在剪切和粘贴下面的代码之前，请务必将/Users/[username]"更改为您自己的主目录路径.

I am not sure exactly why your code is not working. I had difficulty recreating this using the /tmp directory. I then used a normal directory combined with a call to 'cargo vendor', and it worked. Before cutting and pasting my code below, be sure to change '/Users/[username]' with your own path to your home directory.

这是我的程序:

cd ~
git clone https://github.com/jwilm/alacritty
cargo vendor

下一部分可能没有必要:

This next part is probably not necessary:

mkdir /Users/[username]/alacritty/.cargo

在/Users/[username]/alacritty/.cargo/config 创建一个文件并插入以下内容:

Create a file at /Users/[username]/alacritty/.cargo/config and, insert the following:

[source.crates-io]
replace-with = "vendored-sources"

[source.vendored-sources]
directory = "vendor"

继续必要的部分:

修改path语句指向新创建的alacritty路径:

Modify the path statement to point to the newly created alacritty path:

    let path = Path::new("/Users/[username]/alacritty/Cargo.toml");

现在，运行你的代码

    cargo run

这是我的输出:

cargo run
    Finished dev [unoptimized + debuginfo] target(s) in 0.27s
     Running `target/debug/test3`
found package alacritty v0.5.0-dev (/Users/jmurray/alacritty/alacritty)
found 18 source files
found package alacritty_terminal v0.5.0-dev 
(/Users/[username]/alacritty/alacritty_terminal)
found 172 source files
found package font v0.1.0 (/Users/jmurray/alacritty/font)
found 12 source files

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