#[derive(Builder)]pubstructCommand{executable:String,args:Vec<String>,current_dir:String,} 首先实现Command类中的builder函数: implCommand{pubfnbuilder()->CommandBuilder{CommandBuilder}}pubstructCommandBuilder; 为此派生宏创建一个crate,注意需要在Cargo.toml中加上 [lib] proc-macro = true 以表示该crate...
executable: Option<String>, args: Option<Vec<String>, current_dir: Option<String>, 只需要将上述生成的字段嵌入CommandBuilder结构体中,一个带字段的CommandBuilder 结构体便生成好了: quote! { pub struct CommandBuilder { #builder_fields } } 在为CommandBuilder类添加字段后,Command::builder函数中生成...
开发过程宏时经常需要处理结构体或枚举体上的属性参数,如下 Command 结构体的args字段有属性each = "arg", 代码语言:rust 复制 #[derive(Builder)]pubstructCommand{executable:String,#[builder(each ="arg")]args:Vec<String>,#[builder(each ="env")]env:Vec<String>,current_dir:Option<String>,} AST ...
通过调用 env::current_dir 获取当前工作目录,然后通过 fs::read_dir 读取目录中的每个条目,通过 DirEntry::path 提取条目路径,以及通过通过 fs::Metadata 获取条目元数据。Metadata::modified 返回条目自上次更改以来的运行时间 SystemTime::elapsed。Duration::as_secs 将时间转换为秒,并与 24 小时(24 * 60 * ...
pub fn server_start_byfork() -> Command { clap::Command::new("byfork") .about("start daemon by fork crate") .arg( Arg::new("daemon") .short('d') .long("daemon") .action(ArgAction::SetTrue) .help("start as daemon")
letchild=Command::new("/bin/cat").arg("rusty-ideas.txt").current_dir("/Users/aturon").stdout(Stdio::piped()).spawn(); 用特型表达接口 接口(interface)指定了一段代码使用另外一段代码的方式,使得替换其中一段并不需要修改另外一段代码。对于特型,这一特性围绕着成员方法来展开。
pub fn new_server_cmd() -> Command { clap::Command::new("server") .about("server") .subcommand(server_start_byfork()) .subcommand(server_start_bydaemonize()) } pub fn server_start_byfork() -> Command { clap::Command::new("byfork") ...
I tried this code: Directory structure: . +-- main.rs +-- main +-- sub_directory | +-- hello_world main.rs: use std::process::Command; use std::path::Path; fn main(){ Command::new("./hello_world") .current_dir(Path::new("sub_directory"))...
It turns out you can't pass a UNC path as the current directory when starting a process (i.e.,Command::new(...).current_dir(unc_path)). In fact, a lot of other apps will blow up if you pass them a UNC path: for example, Microsoft's owncl.execompiler doesn't support it:rus...
cargo [+toolchain] [OPTIONS] [COMMAND] 3.2.2 cargo 命令参数与选项解析 1. 选项(Options): cargo 命令具有以下选项: -V,--version打印版本信息并退出 --list列出已安装的命令 --explain <CODE>运行rustc --explain CODE -v,--verbose… 使用详细输出(-vv very verbose/build.rs输出) ...