网站建设产品中心,宜昌网站建设设计,门户网站建设说明书,saas小程序开发文章目录 一、CLI Utilities Rust 学完#xff0c;想找些练手的项目#xff0c;怎么办#xff1f;可参考这个文章#xff0c;列出的 15 个项目。
一、CLI Utilities
github
参考 lsd 项目地址
cargo.toml
[dependencies]
clap 2main.rs
extern crate cl… 文章目录 一、CLI Utilities Rust 学完想找些练手的项目怎么办可参考这个文章列出的 15 个项目。
一、CLI Utilities
github
参考 lsd 项目地址
cargo.toml
[dependencies]
clap 2main.rs
extern crate clap;use clap::{App, Arg};fn main() {let app App::new(l).version(1.0.0).author(y).about(this is a l).arg(Arg::with_name(all).short(a).help(show all file and dir),).arg(Arg::with_name(long).short(l).help(show file all info)).arg(Arg::with_name(FILE).multiple(true).default_value(.)).get_matches();let all app.is_present(all);let long app.is_present(long);let files: Vecstr app.values_of(FILE).expect(not get any file).collect();println!(all: {}, long: {}, File: {:?}, all, long, files);
}运行已经可以收到命令行参数了如下
# cargo run
all: false, long: false, File: [.]# cargo run -- -a -l /tmp /etc
all: true, long: true, File: [/tmp, /etc]接下来读取某路径下的文件
extern crate clap;use std::{fs::read_dir, path::Path};fn main() {let files vec![/Users];for file in files {let path Path::new(file);if path.is_dir() {println!({} is a directory, file);let somes read_dir(path).expect(not get this path);for some in somes {if let Ok(ref entry) some {let name entry.file_name().to_str().expect(file name convert str fail).to_string();let data entry.metadata().expect(no metadata);println!({} {:?}, name, data)}}}}
}接下来把两个程序结合
extern crate clap;use clap::{App, Arg};
use std::fs::read_dir;
use std::os::unix::fs::PermissionsExt;
use std::path::Path;#[derive(Debug)]
pub struct Option {display_all: bool,display_long: bool,
}fn main() {let app App::new(l).version(1.0.0).author(lome).about(this is a l).arg(Arg::with_name(all).short(a).help(Show all file and dir),).arg(Arg::with_name(long).short(l).help(show file all info)).arg(Arg::with_name(FILE).multiple(true).default_value(.)).get_matches();let option Option {display_all: app.is_present(all),display_long: app.is_present(long),};let files: Vecstr app.values_of(FILE).expect(not get any file).collect();for file in files {let path Path::new(file);if path.is_dir() {println!({}: , file);let somes read_dir(path).expect(not get this path);for some in somes {if let Ok(ref entry) some {let name entry.file_name().to_str().expect(file name convert str fail).to_string();let data entry.metadata().expect(no metadata);if option.display_long {if option.display_all || !name.starts_with(.) {let permission data.permissions().mode();let systime data.modified().expect(get system time error);println!( {} Permission: {:o} Systime: {:?},name, permission, systime);}} else {if option.display_all || !name.starts_with(.) {println!( {}, name);}}}}}}
}// code result:
Output
$ ./l ./test/ ./test/test/
./test/: test.txttest
./test/test/: test.txt$ ./l -a ./test/ ./test/test/
./test/: test.txttest.test.txt
./test/test/: test.txt$ ./l -al ./test/ ./test/test/
./test/: test.txt Permission: 100644 Systime: SystemTime { tv_sec: 1573805933, tv_nsec: 470337261 }test Permission: 40755 Systime: SystemTime { tv_sec: 1573805940, tv_nsec: 228706396 }.test.txt Permission: 100644 Systime: SystemTime { tv_sec: 1573806564, tv_nsec: 333715123 }
./test/test/: test.txt Permission: 100644 Systime: SystemTime { tv_sec: 1573805940, tv_nsec: 228706396 }
