wally 0.1.0

Package manager for Roblox
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

use std::env::current_dir;
use std::path::PathBuf;

use anyhow::{bail, Context};
use structopt::StructOpt;
use toml_edit::{value, Document};

use crate::manifest::MANIFEST_FILE_NAME;

const DEFAULT_MANIFEST: &str = r#"[package]
name = "placeholder/placeholder"
version = "0.1.0"
registry = "https://github.com/UpliftGames/wally-index"
realm = "shared"

[dependencies]
"#;

/// Initialize a new Wally project.
#[derive(Debug, StructOpt)]
pub struct InitSubcommand {
    /// The path to the project to initialize. Defaults to the current
    /// directory.
    path: Option<PathBuf>,
}

impl InitSubcommand {
    pub fn run(self) -> anyhow::Result<()> {
        let path = match self.path {
            Some(path) => path,
            None => current_dir()?,
        };

        let manifest_path = path.join(MANIFEST_FILE_NAME);

        match fs_err::metadata(&manifest_path) {
            Ok(_) => bail!(
                "There is already a Wally project in this directory. Manifest file ({}) already exists.",
                MANIFEST_FILE_NAME
            ),

            Err(err) => {
                if err.kind() == std::io::ErrorKind::NotFound {
                    // Perfect! This is the state that we want
                } else {
                    bail!("Error accessing manifest file ({}): {}", MANIFEST_FILE_NAME, err);
                }
            }
        }

        let canonical = fs_err::canonicalize(&path);
        let package_name = match &canonical {
            Ok(canonical) => canonical
                .file_name()
                .and_then(|name| name.to_str())
                .context("Folder name contained invalid Unicode")?,
            Err(_) => "unknown",
        };

        let mut doc = DEFAULT_MANIFEST
            .parse::<Document>()
            .expect("Built-in default manifest was invalid TOML");

        let full_name = format!("{}/{}", whoami::username(), package_name);
        doc["package"]["name"] = value(full_name.clone());

        fs_err::write(manifest_path, doc.to_string())?;
        println!("Initialized project {} in {}", full_name, path.display());

        Ok(())
    }
}