Question

我的程序可以在本地计算机上正常工作。它在Emacs“ Spook”娱乐（M-x spook）的静脉中打印来自文本文件的随机行。文本文件位于src/spook.lines中。

C:\Users\datan>spooks
domestic Eiffel Tower Euzkadi Ta Askatasuna Euzkadi Ta Askatasuna minefield
C:\Users\datan>spooks
Uzi White House secret Sivi Vukovi divers
C:\Users\datan>spooks
Hizb-i-Islami smallpox US Airways SWAT plague
C:\Users\datan>

但是如果我publish it as a crate并安装它，则找不到文本文件（因为如果从crates.io安装程序，则该文本文件不在src/spook.lines中）：

C:\Users\datan>docker run -it rust bash
Unable to find image 'rust:latest' locally
latest: Pulling from library/rust
16ea0e8c8879: Pull complete
50024b0106d5: Pull complete
ff95660c6937: Pull complete
9c7d0e5c0bc2: Pull complete
29c4fb388fdf: Pull complete
ee0ab7fd0ac4: Pull complete
Digest: sha256:d8e2b124d6f4fcdf977bf7e6cfbda87fa5061b0c1933742699ee5131444217c9
Status: Downloaded newer image for rust:latest
root@137111b4d94c:/# cargo install spooks
    Updating crates.io index
  Downloaded spooks v0.1.0
  Downloaded 1 crate (19.0 KB) in 1.60s
  Installing spooks v0.1.0
  Downloaded getopts v0.2.21
  Downloaded rand v0.7.2
  Downloaded rand_chacha v0.2.1
  Downloaded easy_reader v0.5.0
  Downloaded getrandom v0.1.13
  Downloaded rand_core v0.5.1
  Downloaded unicode-width v0.1.7
  Downloaded libc v0.2.66
  Downloaded c2-chacha v0.2.3
  Downloaded fnv v1.0.6
  Downloaded cfg-if v0.1.10
  Downloaded ppv-lite86 v0.2.6
   Compiling libc v0.2.66
   Compiling getrandom v0.1.13
   Compiling cfg-if v0.1.10
   Compiling ppv-lite86 v0.2.6
   Compiling fnv v1.0.6
   Compiling unicode-width v0.1.7
   Compiling getopts v0.2.21
   Compiling c2-chacha v0.2.3
   Compiling rand_core v0.5.1
   Compiling rand_chacha v0.2.1
   Compiling rand v0.7.2
   Compiling easy_reader v0.5.0
   Compiling spooks v0.1.0
    Finished release [optimized] target(s) in 22.15s
  Installing /usr/local/cargo/bin/spooks
   Installed package `spooks v0.1.0` (executable `spooks`)
root@137111b4d94c:/# spooks
(no output because src/spook.lines is not there)

我包含文件的方式是：

let file = File::open("src/spook.lines")?;

为什么我不能仅告诉货物/板条箱包装包含文本文件？首选方式是什么？我的意思是，即使我将文件包含在某个目录中，它也不会位于执行的PATH中，因为该程序可能从任何地方运行。

Answer 1

您可以使用include_str!宏。

fn main() {
    let my_str = include_str!("spanish.in");
    assert_eq!(my_str, "adiós\n");
    print!("{}", my_str);
}

https://doc.rust-lang.org/std/macro.include_str.html

Answer 2

感谢这里的评论，以下作品：

fn spook() -> Result<(), Error> {

    // Create fake "file"
    let mut c = Cursor::new(Vec::new());
    let str42 = include_str!("spook.lines").as_bytes();

    // Write into the "file" and seek to the beginning
    c.write_all(str42).unwrap();
    c.seek(SeekFrom::Start(0)).unwrap();

    let mut reader = EasyReader::new(c)?;
    let _res = reader.build_index();
    print!("{}", reader.random_line()?.unwrap());
    print!("{}", reader.random_line()?.unwrap());
    print!("{}", reader.random_line()?.unwrap());
    print!("{}", reader.random_line()?.unwrap());
    print!("{}", reader.random_line()?.unwrap());
    Ok(())
}

如何在包装箱安装中包括文本文件

2 个答案: