lux_cli/
run_lua.rs

1use std::process::Command;
2
3use clap::Args;
4use eyre::{eyre, Result};
5use itertools::Itertools;
6use lux_lib::{
7    config::{Config, LuaVersion},
8    operations::{self, LuaBinary},
9    project::Project,
10    rockspec::LuaVersionCompatibility,
11};
12
13use crate::build::{self, Build};
14
15#[derive(Args, Default)]
16#[clap(disable_help_flag = true)]
17pub struct RunLua {
18    /// Arguments to pass to Lua. See `lua -h`.
19    args: Option<Vec<String>>,
20
21    /// Path to the Lua interpreter to use
22    #[arg(long)]
23    lua: Option<String>,
24
25    /// Print help
26    #[arg(long)]
27    help: bool,
28
29    #[clap(flatten)]
30    build: Build,
31}
32
33pub async fn run_lua(run_lua: RunLua, config: Config) -> Result<()> {
34    let lua_cmd = run_lua.lua.map(LuaBinary::Custom).unwrap_or(LuaBinary::Lua);
35
36    if run_lua.help {
37        return print_lua_help(&lua_cmd);
38    }
39
40    let project = Project::current()?;
41    let (lua_version, root, tree) = match &project {
42        Some(project) => (
43            project.toml().lua_version_matches(&config)?,
44            project.root().to_path_buf(),
45            project.tree(&config)?,
46        ),
47        None => {
48            let version = LuaVersion::from(&config)?.clone();
49            (
50                version.clone(),
51                std::env::current_dir()?,
52                config.user_tree(version)?,
53            )
54        }
55    };
56
57    if project.is_some() {
58        build::build(run_lua.build, config.clone()).await?;
59    }
60
61    operations::run_lua(
62        &root,
63        &tree,
64        lua_version,
65        lua_cmd,
66        &run_lua.args.unwrap_or_default(),
67    )
68    .await?;
69
70    Ok(())
71}
72
73fn print_lua_help(lua_cmd: &LuaBinary) -> Result<()> {
74    let output = match Command::new(lua_cmd.to_string())
75        // HACK: This fails with exit 1, because lua doesn't actually have a help flag (╯°□°)╯︵ ┻━┻
76        .arg("-h")
77        .output()
78    {
79        Ok(output) => Ok(output),
80        Err(err) => Err(eyre!("Failed to run {}: {}", lua_cmd, err)),
81    }?;
82    let lua_help = String::from_utf8_lossy(&output.stderr)
83        .lines()
84        .skip(2)
85        .map(|line| format!("  {}", line))
86        .collect_vec()
87        .join("\n");
88    print!(
89        "
90Usage: lx lua -- [LUA_OPTIONS] [SCRIPT [ARGS]]...
91
92Arguments:
93  [LUA_OPTIONS]...
94{}
95
96Options:
97  --lua       Path to the Lua interpreter to use
98  --no-lock   When building a project, ignore the project's lockfile and don't create one
99  -h, --help  Print help
100",
101        lua_help,
102    );
103    Ok(())
104}
105
106#[cfg(test)]
107mod test {
108    use std::path::PathBuf;
109
110    use lux_lib::config::ConfigBuilder;
111    use serial_test::serial;
112
113    use super::*;
114
115    #[serial]
116    #[tokio::test]
117    async fn test_run_lua() {
118        let args = RunLua {
119            args: Some(vec!["-v".into()]),
120            ..RunLua::default()
121        };
122        let temp: PathBuf = assert_fs::TempDir::new().unwrap().path().into();
123        let cwd = &std::env::current_dir().unwrap();
124        tokio::fs::create_dir_all(&temp).await.unwrap();
125        std::env::set_current_dir(&temp).unwrap();
126        let config = ConfigBuilder::new()
127            .unwrap()
128            .user_tree(Some(temp.clone()))
129            .build()
130            .unwrap();
131        run_lua(args, config).await.unwrap();
132        std::env::set_current_dir(cwd).unwrap();
133    }
134}
lux_cli/run_lua.rs

lux_cli/
run_lua.rs
